Czech Journal of Animal Science, 2022 (vol. 67), issue 9
Genetic evaluation of the scrotal circumference of beef bulls in the Czech RepublicOriginal Paper
Alexandra Novotná, Michaela Brzáková, Alena Birovaš, Zdeňka Veselá
Czech J. Anim. Sci., 2022, 67(9):349-355 | DOI: 10.17221/84/2022-CJAS 
The objective of the present study was to estimate the genetic parameters for the scrotal circumference of bulls of beef breeds in the Czech Republic. The used database for the years 1996-2020 comprised information on the scrotal circumference measurements from 22 065 bulls of 19 pure breeds and crossbred animals of the Beef Simmental, Charolais, and Hereford breeds. After adjustments, the database contained 16 404 records. To test the influence of systematic fixed effects, the GLM/SAS procedure using the least-squares method was applied. The contemporary group, weight and age of the bulls were included as significant systematic...
Cooling storage of ram sperm in presence of antioxidant glutathioneOriginal Paper
Alexander Makarevich, Eliška Špaleková, Elena Kubovičová, Jiří Bezdíček, Peter Chrenek
Czech J. Anim. Sci., 2022, 67(9):356-364 | DOI: 10.17221/113/2022-CJAS
In the process of cryopreservation, the semen of farm animals can be threatened by many factors, such as oxidative damage, which affect the motility and plasma membrane function of the sperm. As an endogenous antioxidant in animals, glutathione (GSH) can significantly improve the quality of thawed sperm when added to the diluent of the semen. This study was aimed at examining the effect of GSH (given at 0.5 mM, 1.5 mM and 5 mM) on the motility and viability of ram sperm following storage under cooling conditions for several days. GSH reduced the negative effect of the cooling conditions on the total and progressive motility (CASA),...
Performance, meat quality, intramuscular fatty acid profile, rumen characteristics and serum parameters of lambs fed microencapsulated or conventional linseed oilOriginal Paper
Chang Gao, Dong Gao, Qiuxu Zhang, Yuan Wang, Aiqin Gao
Czech J. Anim. Sci., 2022, 67(9):365-373 | DOI: 10.17221/77/2022-CJAS
Microencapsulated linseed oil (MLO) has been used in diets to enhance the omega-3 fatty acid concentration of meat in beef cattle without negatively affecting ruminal microbials and digestion; however, the growth performance, meat quality, intramuscular fatty acid profile, and rumen characteristics in response to MLO have not been examined in sheep. Thus, the aim of the present study was to evaluate the effects of microencapsulated or conventional linseed oil supplement on growth performance, meat quality, intramuscular fatty acid profile, rumen characteristics and serum parameters in Small-tailed Han sheep. Eighteen 5-months-old male sheep (25.31...
Changes in the triglyceride metabolism in the thigh muscle and liver of broilers injected intravenously with angiopoietin-like protein 4Original Paper
Xu Zhao, Huashan Huang
Czech J. Anim. Sci., 2022, 67(9):374-383 | DOI: 10.17221/134/2021-CJAS
Angiopoietin-like protein 4 (ANGPTL4) is a potential circulating mediator connecting nutritional factors and fat metabolism, however, information is lacking on the exact role of ANGPTL4 on triglyceride metabolism in the thigh muscles and livers of broilers. The objective of this study was to determine the changes in the triglyceride metabolism in the thigh muscles and livers of broilers injected intravenously with ANGPTL4. In experiment 1, 36 male Arbor Acres broilers at 35 days of age were randomly allocated into six treatments with six replicates. The broilers were subjected to intravenous injection of polyhistidine-small ubiquitin-related modifier-ANGPTL4...