CN117481268A

CN117481268A - Nutritional functional bag for improving farrowing performance of sow and preparation method and application thereof

Info

Publication number: CN117481268A
Application number: CN202311712145.XA
Authority: CN
Inventors: 从光雷; 夏双双; 刘春雪; 李俊波
Original assignee: Anyou Biotechnology Group Co ltd
Current assignee: Anyou Biotechnology Group Co ltd
Priority date: 2023-12-13
Filing date: 2023-12-13
Publication date: 2024-02-02

Abstract

The application relates to the field of livestock nutrition bags, and particularly discloses a nutrition function bag for improving farrowing performance of sows, a preparation method and application thereof. The nutritional functional bag for improving the farrowing performance of the sow comprises the following components in percentage by mass: 12-20% of monobutyrin, 12-20% of betaine, 12-25% of N-carbamylglutamic acid, 8-17% of natural antioxidant, 3 2-8% of 1, 25-hydroxy vitamin D, 0.2-2% of organic iron, 0.05-0.4% of folic acid, 0.01-0.1% of organic chromium and the balance of carrier; the preparation method comprises the following steps: the components are evenly mixed according to the proportion to obtain the nutrition functional bag for improving the farrowing performance of pregnant sows. The nutritional functional package for improving the farrowing performance of the sow can be used as a feed additive for the sow from the 85 th day of gestation to the 2 nd day of delivery, and has the advantages of increasing the umbilical cord blood vessel diameter of the piglet, shortening the birth process, increasing the number of live piglets and healthy piglets of the sow and improving the farrowing performance of the sow.

Description

Nutritional functional bag for improving farrowing performance of sow and preparation method and application thereof

Technical Field

The application relates to the field of livestock nutrition bags, in particular to a nutrition functional bag for improving sow farrowing performance, a preparation method and application thereof.

Background

Along with the rapid development of pig industry, sow breeding is developed at a high speed towards a high yield, the total number of sows is increased continuously, but the problems of low weight of primary piglets, uniform and poor weight of litter piglets, long sow yield, slow feed intake recovery after delivery and the like are also generated. When the uniformity of the fetal pigs is poor, the excessive fetal pigs can cause dystocia of the sow, and the time of the labor process and the probability of the stillbirth are increased. When the sow delivery process exceeds 6 hours, the sow can be damaged, so that postpartum weakness, inappetence and even the reproductive performance of the next birth are affected, the activity of piglets delivered by sows with long delivery process is poorer, the primary milk sucking is insufficient, and the growth performance in the later conservation and fattening stages is poorer.

At present, the common feeding mode often adopts limited feeding to control the energy intake of sows in gestation period, so that the excessive fat deposition of the sows is prevented from being unfavorable for reproductive performance; or by adding nutritional regulator into pregnant feed of sow. However, limited feeding can cause that the nutrition supplied in the umbilical cord blood cannot meet the requirement of high yield, and further the individual difference of the born piglets is larger, and even the stillbirth rate is greatly improved; most nutrition regulators are single in variety, and the number of live piglets for increasing sow production is only about 0.3-1.1 head/litter, so that the situation of unstable effect and large difference is presented.

Aiming at the related technology, the inventor prepares a nutrition functional package by compounding from multiple angles of oxidation balance, energy, amino acid, mineral elements and the like, can provide nutrition required by the growth of the fetal pigs, does not cause nutrition burden to the sow, comprehensively improves the farrowing performance of the sow,

disclosure of Invention

In order to improve farrowing performance of pregnant sows, the application provides a nutritional functional bag for improving farrowing performance of sows, a preparation method and application thereof.

In a first aspect, the present application provides a nutritional functional pack for improving farrowing performance of a sow, which adopts the following technical scheme:

a nutritional functional bag for improving farrowing performance of sows comprises the following components in percentage by mass:

12% -20% of monobutyrin,

12% -20% of betaine,

12% -25% of N-carbamylglutamic acid,

8-17% of natural antioxidant,

3 2% -8% of 1, 25-hydroxy vitamin D,

0.2 to 2 percent of organic iron,

Folic acid 0.05-0.4%,

0.01 to 0.1 percent of organic chromium,

the balance being carrier.

By adopting the technical scheme, the components are compounded from the aspects of oxidation balance, energy, amino acid, mineral elements and the like, so that the placenta blood flow of the sow is favorably improved, the umbilical cord blood vessel diameter is enlarged, the blood flow supply of the parent is increased, piglets with better vitality and uniform primary weight are obtained, the birth process of the sow can be shortened, the dystocia and the stillbirth number of the sow are reduced, and the farrowing performance of the sow is improved; specific:

the monobutyrin can promote the development of intestinal vascular endothelial, can be decomposed into butyric acid and glyceride after entering the small intestine, the butyric acid can stimulate the proliferation of intestinal vascular and umbilical vascular endothelial cells of the sow, and the glyceride can continuously supply energy for the delivery of the sow;

betaine is a methyl donor, can promote the secretion of growth hormone of organisms, promote the development of fetal pigs, and provide methyl in the process of transferring methylation to increase the generation of creatine, and the creatine can protect the fetal pigs from being damaged due to hypoxia during delivery;

n-carbamylglutamic acid (NCG) is a stable structural analogue of N-acetylglutamic acid, can activate dihydropyrrole-5-carboxylic acid synthetase and carbamylphosphoric acid synthetase I in a sow body, promote the synthesis of endogenous arginine, continuously provide required arginine for the sow, and can not cause direct absorption restriction of amino acid so as to regulate the nutrition metabolism of the body, and the arginine has very important promotion effect on the growth and development of embryos, placenta and fetuses;

the natural antioxidant can slow down oxidative damage of sow during gestation and delivery due to oxidative stress, ensure normal growth and development of organism and fetal pig, and has higher organism absorptivity than synthetic antioxidant, and better antioxidant and anti-inflammatory effects;

folic acid consists of an endopteridine ring, para-aminobenzoic acid and glutamic acid, has an antioxidant effect, and can promote the growth and development of fetal pigs by supplementing folic acid in the late gestation period of sows and reduce the possibility of metabolic disturbance of one-carbon compounds including methyl, serine, purine and pyrimidine synthesis caused by folic acid deficiency;

the 1, 25-hydroxy vitamin D3 can improve the absorption of calcium by the body of the sow, is safer and more efficient compared with vitamin D, is beneficial to ensuring the intake capacity of the body of the sow to the calcium, relieves the phenomenon of calcium deficiency caused by the weakening of the overall function and the reduction of the intake capacity of the calcium of the sow with high gestational age, and is beneficial to reducing the labor of the sow;

the organic iron has the characteristic of high biological potency, and the organic iron is added into the diet of pregnant and lactating sows, so that the mother body can transfer the organic iron to piglets through placenta and breast milk, thereby improving the survival rate of the piglets and promoting healthy growth of the piglets; the organic chromium has high biological potency, higher absorptivity compared with inorganic chromium, good safety, and the addition of the organic chromium can supplement chromium loss of sows during pregnancy, thereby being beneficial to improving the number of live piglets of the sows.

In a specific embodiment, the nutritional functional package specifically comprises the following components in percentage by mass: 16% -18% of monobutylamine glyceride,

16% -18% of betaine,

18-20% of N-carbamylglutamic acid,

8-12% of natural antioxidant,

3 2% -4% of 1, 25-hydroxy vitamin D,

0.2 to 0.5 percent of organic iron,

Folic acid 0.05-0.15%,

0.01 to 0.1 percent of organic chromium,

the balance being carrier.

By adopting the technical scheme, the improvement effect of the nutrition supplementing bag on the farrowing performance of the sow is further improved by optimizing the mass percentages of the components, and the fetal pig is promoted to develop more uniformly and more actively by increasing the diameter of umbilical vessels, so that the labor is shortened, and the number of live and healthy sows is increased.

Preferably, the natural antioxidant is selected from one or more of tea polyphenols, vitamin E, glycyrrhrizae radix antioxidant, and herba Rosmarini officinalis.

By adopting the technical scheme, the natural antioxidant has better organism absorptivity than the synthetic antioxidant, has good safety, and can effectively slow down oxidative damage of sows in gestation period and childbirth period.

Preferably, the organic iron is selected from one or more of iron glycinate, yeast iron, polymaltose iron, ferrous fumarate and iron lactate.

By adopting the technical scheme, compared with inorganic iron, the organic iron has good safety and high biological potency, can effectively improve the reproductive performance of sows, and can improve the survival rate of piglets and promote healthy growth of piglets.

Preferably, the organic chromium is selected from one or more of chromium nicotinate, chromium picolinate, chromium yeast, chromium methionine and chromium propionate.

By adopting the technical scheme, the organic chromium has higher absorptivity than inorganic chromium, has large safety range to sows and no obvious toxicity, and can promote the improvement of the number of live piglets of the sows.

Preferably, the carrier is bamboo powder.

In a second aspect, the present application provides a method for preparing a nutritional functional pack for improving farrowing performance of a sow, which adopts the following technical scheme:

a preparation method of a nutritional functional bag for improving farrowing performance of sows comprises the following steps:

according to the proportion, organic iron, folic acid and organic chromium are uniformly mixed, then monobutyralte, betaine, N-carbamylglutamic acid, natural antioxidants and 1, 25-hydroxy vitamin D3 are added, uniformly mixed, then a carrier is added, and after uniform mixing, the nutrition functional bag for improving the farrowing performance of pregnant sows is obtained.

By adopting the technical scheme, the nutrition functional bag which is beneficial to increasing the diameter of umbilical vessels and the reproductive performance of sows and shortening the labor of the sows can be prepared.

In a third aspect, the application provides an application of a nutritional functional bag for improving farrowing performance of sows, which adopts the following technical scheme:

the application of the nutritional functional bag for improving the farrowing performance of the sow is applied to a feed additive for the sow from the 85 th day of gestation to the 2 nd day of delivery.

Preferably, the method for applying the nutritional functional package comprises the following steps:

the daily intake of the nutritional functional package of each sow is 6-12g from 85 days of gestation to the day of delivery;

the daily intake of the nutritional functional package of each sow is 14-16g 1-2 days after delivery.

Preferably, the method of intake of the nutritional functional package for each sow comprises: the nutritional functional packages are mixed into the feed for feeding every day according to daily intake of sows.

By adopting the technical scheme, the nutritional functional package is added as the feed additive in the feeding of the sows in the late gestation period and the postpartum period, thereby being beneficial to increasing the diameter of umbilical vessels of piglets, promoting the development of the pregnant pigs, shortening the birth process of the sows, increasing the number of live piglets and healthy piglets of the sows and promoting the remarkable improvement of the farrowing performance of the sows.

In summary, the present application has the following beneficial effects:

1. in the method, various raw materials are compounded from the angles of oxidation balance, energy, amino acid, mineral elements and the like, and all the components are in synergistic interaction to jointly promote the placenta blood flow of the sow, enlarge the umbilical cord blood vessel diameter, increase the blood flow supply of the parent, obtain piglets with better activity and uniform primary weight, shorten the sow labor, reduce the dystocia and stillbirth number of the sow and remarkably improve the farrowing performance of the sow;

2. through the optimization to each component mass percent ratio in this application, further improve the functional effect of nutrition function package, promote child pig development more even, more active for the sow produces live and healthy young more, sow farrowing vigor is higher, and the piglet birth weight is more even.

Drawings

FIG. 1 shows the effect of the nutritional kit prepared in example 1 of the present application on the stool pattern of pregnant sows, wherein group A is the control group in example 7 and group B is the kit group in example 7;

fig. 2 shows the effect of the nutritional kit prepared in example 1 of the present application on the appearance of the breast of a lactating sow, group a being the control group in example 7 and group B being the kit group in example 7.

Detailed Description

To further assist understanding of the technical solution of the present invention, the technical solution of the present invention will be described in more detail below by providing several specific implementation examples, all of which are only some of the embodiments of the present invention, but not all of them;

the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments; the reaction apparatus, monomer compounds, and the like according to the following examples are commercially available.

The following specific embodiments may be combined with each other and may not be described in detail in some embodiments for the same or similar concepts or processes therein.

The following examples are further illustrative of the invention, which is not limited thereto. The embodiment is not specifically described, and the percentage content is mass percentage.

Examples

Example 1

The embodiment discloses a nutritional functional bag for improving farrowing performance of sows, which is prepared by the following steps:

500g of monobutyralte, 500g of betaine, 586g of N-carbamylglutamic acid, 300g of vitamin E, 100g of 1, 25-hydroxyvitamin D, 10.8g of iron glycinate, 3g of folic acid, 0.2g of chromium picolinate and 1000g of bamboo powder are weighed by using an analytical balance;

adding the iron glycinate, folic acid and chromium picolinate with the above quality into a mixer, mixing uniformly, adding monobutyralte, betaine, N-carbamylglutamic acid, vitamin E and 1, 25-hydroxy vitamin D3, mixing uniformly, adding bamboo powder, mixing for 30min, and obtaining the nutritional functional bag for improving the farrowing performance of the sow.

Example 2

480g of monobutyralte, 480g of betaine, 540g of N-carbamylglutamic acid, 240g of vitamin E, 60g of 1, 25-hydroxyvitamin D, 6g of iron glycinate, 1.5g of folic acid, 0.3g of chromium picolinate and 1192.2g of bamboo powder are weighed by using an analytical balance;

Example 3

360g of monobutyralte, 360g of betaine, 360g of N-carbamylglutamic acid, 240g of vitamin E, 60g of 1, 25-hydroxyvitamin D, 6g of iron glycinate, 1.5g of folic acid, 0.3g of chromium picolinate and 1612.2g of bamboo powder are weighed by an analytical balance;

Example 4

540g of monobutyralte, 540g of betaine 540g, 600g of N-carbamylglutamic acid, 360g of vitamin E, 120g of 1, 25-hydroxyvitamin D, 15g of iron glycinate, 4.5g of folic acid, 5g of chromium picolinate and 817.5g of bamboo powder are weighed by an analytical balance;

Example 5

The embodiment discloses a nutritional functional bag for improving farrowing performance of sows, which is prepared by the following steps: 600g of monobutyralte, 600g of betaine, 750g of N-carbamylglutamic acid, 510g of vitamin E, 240g of 1, 25-hydroxyvitamin D, 60g of iron glycinate, 12g of folic acid, 3g of chromium picolinate and 225g of bamboo powder are weighed by using an analytical balance;

Example 6

500g of monobutyralte, 500g of betaine, 586g of N-carbamylglutamic acid, 300g of tea polyphenol, 3g of 1, 25-hydroxy vitamin D, 10.8g of ferrous fumarate, 3g of folic acid, 0.2g of chromium methionine and 1000g of bamboo powder are weighed by using an analytical balance;

adding ferrous fumarate, folic acid and chromium picolinate with the above quality into a mixer, mixing uniformly, adding monobutyralte, betaine, N-carbamylglutamic acid, tea polyphenol and 1, 25-hydroxy vitamin D3, mixing uniformly, adding bamboo powder, and mixing for 30min to obtain the nutritional functional bag for improving the farrowing performance of the sow.

Example 7

The embodiment discloses an application of a nutritional functional bag for improving farrowing performance of sows, and an application method and a functional evaluation method are as follows: (1) The test animal grouping and feeding method selects 40 healthy long and large binary pregnant sows, randomly divides the pregnant sows into a control group and a functional package group according to the principle that the number of the fetuses is consistent with the body condition, each group is 20, each group is repeated by 1 pregnant sow, and the test starts from the 85 th day of the hybridization to the weaning end of the piglets.

The control group was fed sow gestation material from day 85 of gestation to day 2 after delivery; the functional package group feeds the sow gestation material and the nutritional functional package from the 85 th day of gestation to the 2 nd day after delivery, and specifically comprises the following steps: on the 85 th day of gestation to the delivery day, 10g of the nutrition function pack is taken every day by each sow, and the nutrition function pack is mixed into sow gestation materials twice for feeding; on the 1 st to 2 nd days of delivery, 15g of the nutrition function package is taken every day by each sow, and the nutrition function package is mixed into sow pregnancy materials twice for feeding. The control group and the functional group were fed the same sow feeding during feeding.

In this example, the sow gestation material and the sow lactation material are both from the company of the safety and biotechnology group, inc.; a nutritional functional package was prepared from example 1.

(2) Effect of the nutritional supplement of example 1 on backfat, feed intake and stool scoring of sow

The test method and the index are as follows:

sow feed intake: recording the feed intake of each sow during gestation and lactation; analyzing the postpartum feed intake recovery time of each sow according to the feed intake of each sow on the 7 th day after delivery;

backfat measurement: backfat P2 point thickness of sow on 85 days of gestation, delivery and weaning day using backfat determinator;

fecal scoring: daily stool scores were recorded for each sow and the scoring criteria are shown in table 1.

TABLE 1 sow faeces scoring criteria

Constipation degree	Fecal appearance description	Score value
			Very severe constipation	Not defecation	0
Severe constipation	Granular material	1
			Moderate constipation	Solid feces	2
Mild constipation	Lightly firm	3
			Normal defecation	Soft and firm feces	4
Mild diarrhea	Is of a type but not firm, between normal and wet manure	5
			Severe diarrhea	Dilute manure, no fixed shape and liquid	6

Each sow was used as a test unit for statistical analysis. After preliminary sorting of the test data with Excel software, independent sample T-test statistical analysis was performed on the 2 sets of data with SPSS27.0 statistical software. All data were checked for normalization and were not in conformity with the normal distribution and were analyzed using Kruskal-wallis. Results are expressed as mean ± standard error, P <0.05 indicates significant differences, 0.05< P <0.10 indicates a trend.

The test results are summarized in table 2.

TABLE 2 Effect of the nutritional supplement of example 1 on backfat, feed intake and fecal scoring of sows

As can be seen in conjunction with table 2, the average feed intake in lactation of sows in the functional pack group was significantly higher than that in the control group (P < 0.05), but the post-natal feed recovery time of the different treatments was not significantly affected (P > 0.05), and the nutritional functional packs had no significant effect on sow fetuses, backfat 85 days gestation, backfat time of delivery, backfat at time of weaning, backfat loss and stool scoring (P > 0.05).

Referring to fig. 1 in combination with table 2, it can be seen that the sow constipation incidence of the group of functional packs is lower.

(3) Effect of the nutritional supplement of example 1 on sow farrowing Performance

The test method and the index are as follows:

farrowing performance: recording the birth process of each sow, and calculating the birth interval time, the weaning rate and the stillbirth rate of each sow, wherein the number of alive piglets, the stillbirth number (including stillbirth and mummy), the weak number (weight <0.9 kg) and the malformation number of each sow; and calculating the variation coefficient of the weight of the newborn piglets according to the birth weight of each newborn piglet = (standard deviation of the weight of the newborn piglets/average weight of the newborn piglets) ×100.

Piglet vitality: the vitality score at birth was recorded for each piglet at delivery, and the scoring criteria are shown in table 3.

TABLE 3 vitality scoring criteria for piglets

The test results are summarized in table 4.

TABLE 4 Effect of the nutritional supplement of example 1 on sow farrowing performance

As can be seen in combination with table 4, the litter size, litter size and piglet viability of the functional pack group were significantly improved (P < 0.05) compared to the control group sows. The dead number, dead rate, standard deviation of weight of newborn piglets and variation coefficient of weight of newborn piglets of the functional pack group are obviously reduced (P < 0.05), and the nutritional functional pack has no obvious difference (P > 0.05) on the weak number, mummy number, weak number rate, average weight of newborn healthy piglets and average weight of newborn alive piglets of the sow.

(4) Effect of the nutritional supplement of example 1 on pig umbilical and placenta Properties

The test method and the index are as follows:

during delivery, respectively measuring the toughness, perimeter and blood vessel diameter of the umbilical cord of each piglet by using a digital display tension measuring device and a high-precision vernier caliper; placenta was weighed and placenta efficiency = birth average weight/placenta average weight was calculated.

The test results are summarized in table 5.

TABLE 5 Effect of the nutritional supplement of example 1 on pig umbilical and placenta Properties

It can be seen from the combination of table 5 that the functional pack group significantly increased the umbilical vessel diameter of piglets (P < 0.05) compared to the control group, while the functional pack group had no significant differences from the control group in umbilical length, umbilical circumference, umbilical toughness, placenta average weight, and placenta efficiency (P > 0.05).

(5) The method and index for testing the effect of the nutritional supplement of example 1 on sow labor, lactation and oestrus rate 7 days after weaning are as follows:

lactation amount: the formula for calculating the colostrum intake of the piglets is as follows: CI= -106+2.26WG+200BWB+0.111D-1414 WG/D+0.0182WG/BWB; CI is the colostrum intake (g) of the piglets; WG is the increase in body weight (g) from birth of the piglet to 24 hours after the first piglet in the litter; BWB is piglet birth weight (kg); d is the duration (min) of sucking of the piglet from birth to 24 hours after the first piglet in the litter. The colostrum yield of the sow was obtained by summing the colostrum intake of all piglets of the same litter. The calculation formula of the lactation amount of the sow is as follows: daily lactation (kg) of sow=average daily weight gain of piglets x 4.

Sow labor course: the delivery time of each sow and the delivery interval of each piglet are recorded during the delivery of the sow.

Estrus within 7 days post weaning: recording the days from weaning to re-estrus of each sow, and calculating the estrus rate within 7 days after weaning of the sow.

The test results are summarized in Table 6.

TABLE 6 Effect of the nutritional supplement of example 1 on sow labor, lactation and oestrus rate 7 days after weaning

As can be seen in combination with table 6, the functional group significantly shortened the interval between farrowing of piglets per sow (P < 0.05) compared to the control group, and had a trend to shorten the overall labor duration (p=0.064). Compared with a control group, the functional group can obviously improve daily lactation yield (P < 0.05) of sows. But there were no significant differences (P > 0.05) in average weight, ADG and colostrum intake for 24h post partum piglets. The nutritional functional package has no obvious influence on the oestrus time of 7 days after weaning of the sow (P is more than 0.05), but can improve the seven-day oestrus rate of the sow after weaning of the piglet, and the oestrus rate reaches 90%.

Referring to fig. 2 in combination with table 6, it can be seen that the functional group had some improvement in the mammary gland appearance of lactating sows over the control group.

(6) Effect of the nutritional supplement of example 1 on growth performance and health of offspring suckling piglets

The test method and the index are as follows:

6 days after delivery: recording the weight of each piglet (ensuring that the number of the sow in each sow is close to that of the sow in the same group, and adjusting the number of the sow in the same group if the difference exists); 25 days after delivery: the weight and number of piglets per litter were recorded. The post-rearing and death panning records (comprising the date and the weight) are made during the test period, and the daily gain of 6-25 days is calculated according to the starting weight, the ending weight and the head number of each piglet;

diarrhea rate of piglets: recording the daily diarrhea number of each piglet in 6-25 days, and calculating the piglet diarrhea rate of the control group and the functional group, wherein the diarrhea rate (%) = the sum of the daily diarrhea number of the test piglets/the sum of the daily stock number of the test piglets is multiplied by 100;

survival rate of piglets: the number of dead piglets per litter was recorded for 6-25 days, and the survival rates of piglets in group a and group B were calculated as survival rate (%) =25 days per litter trial number of piglets per 6 days per litter trial number of piglets×100.

The test results are summarized in Table 7.

TABLE 7 influence of the nutritional functional packages of example 1 on the performance and health of offspring of sows

As can be seen from table 7, the functional group can significantly improve average daily gain of piglets (P < 0.05) and reduce diarrhea rate of suckling piglets (P < 0.05) compared with the control group, but the nutritional functional group has no significant effect on survival rate of piglets, average weight of piglets for 6 days and average weight of piglets for 25 days (P > 0.05).

In conclusion, the nutritional functional package prepared in the embodiment 1 is added as a feed additive in the late gestation period and 1-2 days after delivery of the sow, so that the average diameter of arterial blood vessels of piglets can be effectively increased by 0.27mm, and the diameter of umbilical vein blood vessels is increased by 0.38mm; effectively shortens the sow labor and shortens the production interval of the sow farrowing, and reduces the sow labor by 140min on average, so that the time of the interval of the farrowing of each piglet is reduced by 10min on average; the number of live born piglets, the number of healthy born piglets and the activity of piglets are effectively improved, the number of dead fetus, the rate of dead fetus, the standard deviation of the weight of newborn piglets and the variation coefficient of the weight of newborn piglets are reduced, the average number of live born piglets is increased from 11.78 to 14.60, the average number of healthy piglets is increased from 11.78 to 13.70, and the number of dead fetus is reduced from 2.60 to 1.40, so that the nutritional functional package can obviously improve the farrowing performance of the sows. The nutrition functional package can effectively improve the average feed intake of sows in the lactation period, promote the daily lactation of the sows, and simultaneously is beneficial to improving the average daily weight gain of piglets and reducing the diarrhea rate of the piglets.

Example 8

This example discloses the use of the nutritional packs prepared in examples 2-6 as a feed additive for sows from day 85 of gestation to day 2 of delivery.

(1) Grouping and feeding method for test animals

50 healthy long and large binary pregnant sows are selected and randomly divided into 5 groups according to the principle that the fetus number is consistent with the body condition: test group 1, test group 2, test group 3, test group 4, test group 5; each group had 10 replicates of 1 pregnant sow, and the trial started on day 85 of mating and ended with weaning of piglets.

Each group was fed with sow gestation material and nutritional functional packages from day 85 of gestation to day 2 after delivery, in the same manner as in example 7, except that the nutritional functional packages added during feeding in test group 1 were prepared from example 2; the nutritional functional packages added during feeding of test group 2 were prepared from example 3; the nutritional functional packages added during feeding of test group 3 were prepared from example 4; the nutritional functional packages added during feeding of test group 4 were prepared from example 5; the nutritional profile to be added during feeding of trial group 5 was prepared from example 6.

(2) Functional evaluation contrast test

The total number of farrowing, number of live farrowing, number of healthy farrowing, activity of piglets, diameter of umbilical vessels of piglets, cheng Shichang of sows and delivery interval were measured, and the test method, index and statistical method of test results were the same as in example 7.

The test results are summarized in Table 8.

TABLE 8

By combining examples 2-6 and Table 8 and combining tables 2 and 4-7, it can be seen that the effects of the nutritional functional package can be further optimized and the farrowing performance of the sow can be further improved by adjusting the amounts of the components of the nutritional functional package within the preferred ranges disclosed in the present application.

The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims

1. The nutritional functional bag for improving the farrowing performance of the sow is characterized by comprising the following components in percentage by mass:

12% -20% of monobutyrin,

12% -20% of betaine,

12% -25% of N-carbamylglutamic acid,

8-17% of natural antioxidant,

3 2% -8% of 1, 25-hydroxy vitamin D,

0.2 to 2 percent of organic iron,

Folic acid 0.05-0.4%,

0.01 to 0.1 percent of organic chromium,

the balance being carrier.

2. The nutritional functional pack for improving farrowing performance of sows as claimed in claim 1, wherein: the composition specifically comprises the following components in percentage by mass:

16% -18% of monobutylamine glyceride,

16% -18% of betaine,

18-20% of N-carbamylglutamic acid,

8-12% of natural antioxidant,

3 2% -4% of 1, 25-hydroxy vitamin D,

0.2 to 0.5 percent of organic iron,

Folic acid 0.05-0.15%,

0.01 to 0.1 percent of organic chromium,

the balance being carrier.

3. The nutritional functional pack for improving farrowing performance of sows as claimed in claim 1, wherein: the natural antioxidant is one or more selected from tea polyphenols, vitamin E, glycyrrhrizae radix antioxidant, and herba Rosmarini officinalis.

4. The nutritional functional pack for improving farrowing performance of sows as claimed in claim 1, wherein: the organic iron is selected from one or more of iron glycinate, yeast iron, polymaltose iron, ferrous fumarate and iron lactate.

5. The nutritional functional pack for improving farrowing performance of sows as claimed in claim 1, wherein: the organic chromium is selected from one or more of chromium nicotinate, chromium picolinate, chromium yeast, chromium methionine and chromium propionate.

6. The nutritional functional pack for improving farrowing performance of sows as claimed in claim 1, wherein: the carrier is bamboo powder.

7. A method of preparing a nutritional kit for improving the farrowing performance of a sow as claimed in any one of claims 1 to 6, wherein: the method comprises the following steps:

according to the proportion, the monobutyryl glyceride, the betaine, the N-carbamylglutamic acid, the natural antioxidant, the 1, 25-hydroxy vitamin D3, the organic iron, the folic acid, the organic chromium and the carrier are uniformly mixed to obtain the nutrition functional bag for improving the farrowing performance of pregnant sows.

8. Use of a nutritional kit according to any one of claims 1-6 for improving the farrowing performance of a sow, wherein: a feed additive for sows from day 85 of gestation to day 2 of delivery.

9. Use of a nutritional kit for improving farrowing performance in sows according to claim 8, characterized in that: the method for applying the nutritional functional package comprises the following steps:

10. Use of a nutritional kit for improving farrowing performance of pregnant sows according to claim 9, characterized in that: the method for each sow to ingest the nutritional functional package comprises the following steps: the nutritional functional packages are mixed into the feed for feeding every day according to daily intake of sows.