Czech Journal of Animal Science, 2023 (vol. 68), issue 2
Effects of apoptosis by 20α-hydroxysteroid dehydrogenase activity on corpus luteum formation during early pregnancy in cattleOriginal Paper
Ji-Hye Lee, Seok-Hyun Cho, Sang-Hwan Kim
Czech J. Anim. Sci., 2023, 68(2):53-63 | DOI: 10.17221/116/2022-CJAS 
20α-hydroxysteroid dehydrogenase (20α-HSD) is a member of the aldo-keto reductase family. These enzymes play a pivotal role in regulating steroid hormones, such as androgens, oestrogen, and progesterone, and are, therefore, considered vital targets for determining whether a pregnancy is maintained. In this study, we investigated the association between 20α-HSD and apoptosis-related genes in luteal tissues (at 30, 60, and 90 days of gestation) and cells from early gestation in cattle. The corpus luteum altered the number of large lutein cells from 30–90 days. The change in the junction of the connective...
Low-density lipoprotein supplementation improves the quality of Holstein bulls’ insemination dosesOriginal Paper
Jan Pytlík, Radim Codl, Jaromír Ducháèek, Filipp Georgijeviè Savvulidi, Marek Vrhel, Ludìk Stádník
Czech J. Anim. Sci., 2023, 68(2):64-71 | DOI: 10.17221/223/2022-CJAS
Despite the routine use of cryopreservation in dairy cattle, the subsequent deterioration in the quality of bull insemination doses (IDs) is an incentive to refine cryopreservation protocols, including the composition of the ID. The aim of this study was to examine, using a flow cytometry assay, whether the selected concentrations of low density lipoproteins (LDLs) extracted from hen-egg yolk may improve the post-thaw quality of the ID diluted with a plant-based extender. In total, 30 ejaculates from five sires (six trials per animal) were collected and processed at the Artificial Insemination Centre. The effect of the low density lipoprotein...
Dietary biochar as a feed additive for increasing livestock performance: A meta-analysis of in vitro and in vivo experimentOriginal Paper
Novia Qomariyah, Andi Ella, Salfina Nurdin Ahmad, Yenni Yusriani, Mohammad Miftakhus Sholikin, Tri Rachmanto Prihambodo, Yuli Retnani, Anuraga Jayanegara, Elizabeth Wina, Idat G. Permana
Czech J. Anim. Sci., 2023, 68(2):72-86 | DOI: 10.17221/124/2022-CJAS
The present study aimed to evaluate the use of biochar as a feed additive on nutrient utilization and livestock performance by employing a meta-analysis method. Various in vitro and in vivo studies regarding the effects of biochar on rumen fermentation, nutrient disappearance, total gas, methane production, microbial population, feed intake, growth performance, blood constituents, nutrient digestibility and nitrogen retention were tabulated in a database. Data were analysed using the mixed model method in which the different studies were considered as random effects while the biochar addition was treated as a fixed effect. The addition...
Effect of Broussonetia papyrifera leaf meal on growth performance, antioxidant capacity, and gut health status of growing rabbitsOriginal Paper
Kunliang Han, Bang Zhang, Yan Cui
Czech J. Anim. Sci., 2023, 68(2):87-97 | DOI: 10.17221/146/2022-CJAS
This experiment aimed to study the effect of Broussonetia papyrifera leaf meal (BP) on the growth performance, antioxidant capacity, intestinal permeability, and caecal microbiota of growing rabbits. A total of 240 weaned Ira male rabbits were randomly divided into four groups with six replicates of 10 rabbits each. The BP was added at 0% (CON), 3.0% (BP3), 6.0% (BP6), and 9.0% (BP9). All diets were isoenergetic, isonitrogenous, and isofibrous. The feeding trial lasted for 28 days. The results showed that adding BP had no significant effect on the growth performance of rabbits. Compared with the CON group, groups BP6 and BP9 showed the...