Czech Journal of Animal Science, 2023 (vol. 68), issue 11
The most common reproductive disorders of cows in Holstein cattle breedingOriginal Paper
Eva Kašná, Ludmila Zavadilová, Zuzana Krupová, Soňa Šlosárková, Petr Fleischer
Czech J. Anim. Sci., 2023, 68(11):433-442 | DOI: 10.17221/86/2023-CJAS 
The paper deals with the genomic evaluation of retained placenta (RP), metritis/endometritis (MET), and cystic ovarian disease (CYS) and their involvement in the selection programme of Holstein cattle. A procedure for the estimation of genetic parameters and genomic breeding values was proposed. The dataset included farmers’ records of 127 000 lactations from 109 farms for RP, 185 000 lactations from 131 farms for MET and 115 000 lactations from 87 farms for CYS. The lactational incidence was 6.9% (RP), 12.8% (MET) and 9.2% (CYS). The single-trait animal model equation included fixed effects of herd-year-season of calving and parity of the cow,...
Lipid-rich bovine serum albumin is beneficial for the early development of bovine embryos, but induces lipid droplet formation in the blastocystOriginal Paper
Dae-Jin Kwon, Kyung-Do Park, HakKyo Lee, Jae-Don Oh
Czech J. Anim. Sci., 2023, 68(11):443-450 | DOI: 10.17221/107/2023-CJAS
Lipid-rich bovine serum albumin (LR-BSA) has been reported to increase the survival rate of blastocysts after freezing and thawing. However studies on the early development of in vitro fertilised (IVF) embryos are still insufficient in cattle. This study investigated the blastocyst productivity of in vitro culture (IVC) medium (synthetic oviductal fluid medium with amino acids, mSOFaa) supplemented with 5% fetal bovine serum (FBS, Control) or LR-BSA (1, 2.5, 5 mg/ml dosages, respectively) and the qualitative characteristics of produced blastocysts. Cleavage rates on day 2 were similar between all groups. Significant differences were obtained...
The occurrence and risk assessment of bisphenol A and its analogues – bisphenol B, F, S, Z and AF in the urine of lactating sowsOriginal Paper
Ivan Bahelka, Roman Stupka, Jaroslav Čítek, Michal Šprysl
Czech J. Anim. Sci., 2023, 68(11):451-459 | DOI: 10.17221/90/2023-CJAS
Bisphenols (BP) are pollutants that are globally and widely distributed and adversely affect the health of humans. However, knowledge of their presence in animals, especially farm animals such as pigs, remains limited. In this study, the incidence of bisphenol A (BPA) and its five analogues – bisphenol B (BPB), bisphenol F (BPF), bisphenol S (BPS), bisphenol Z (BPZ) and bisphenol AF (BPAF) – was monitored in lactating sows on an actual pig farm. The urine samples of 27 sows were collected twice on the 3rd day after parturition, and stored at –20 °C until analysis using MDGC/MS. None of the lactating sows produced bisphenol-free...
Monitoring of milk performance of Wallachian sheep grazed under traditional Carpathian management in Western Beskids locationOriginal Paper
Martin Ptáček, Michal Milerski, Tereza Michlová, Jaromír Ducháček, Vladimír Tančin, Michal Uhrinčať, Jitka Schmidová, Filipp Georgijevič Savvulidi, Luděk Stádník
Czech J. Anim. Sci., 2023, 68(11):460-468 | DOI: 10.17221/85/2023-CJAS
This study aimed to determine the potential of Wallachian sheep in quantitative and qualitative indicators of milk production under extensive conditions of the Western Beskids mountains. Milk samples were collected from the group of 38 non-dairying sheep selected from the basic 120-head flock. Ewes were monitored during four control days (from 27th April, the average 42nd day of lactation to 4th August, the average 142nd day of lactation) to cover the whole lactation period. Ewes were investigated for their milk production and for milk quantity parameter. Milk quality indicators included percentage estimation...