Czech Journal of Animal Science, 2025 (vol. 70), issue 1
Mid-infrared milk screening as a phenotyping tool for feed efficiency in dairy cattleReview
Ludmila Zavadilová, Eva Kašná, Zuzana Krupová, Alena Pechová, Petr Fleischer, Soňa Šlosárková
Czech J. Anim. Sci., 2025, 70(1):1-16 | DOI: 10.17221/165/2024-CJAS 
Feed efficiency (FE) is one of the most essential traits in dairy cattle, primarily due to the high cost of feed, which constitutes a significant portion of dairy herd expenses. Unfortunately, assessing FE in individual cows requires precise measurement of feed consumption, a labour-intensive and expensive process that is impractical for group-fed cows on production farms. Efforts have been made to predict FE or, more precisely, dry matter intake (DMI), using predictors such as a body weight (BW), milk yield (MY), and milk composition. Recently, Fourier transform mid-infrared (FT-MIR) spectroscopy has been proposed as a tool to enhance the accuracy...
Validation of the evaluation of longevity by weighted analysisOriginal Paper
Daniela Fulínová, Jiří Bauer, Luboš Vostrý
Czech J. Anim. Sci., 2025, 70(1):17-25 | DOI: 10.17221/157/2024-CJAS
We applied the Interbull validation methodology, a widely accepted method in animal breeding, to assess novel weighted and nonweighted repeatability models for the prediction of breeding values for longevity in Czech Holstein cattle. The population included in the estimation also contained 58 704 animals with genotypes. Performance records from 1 055 814 cows in the full dataset and from 831 995 cows in the trimmed dataset were used for evaluation. Both linear models included effects of herd-year-period, animal, permanent environment, and correction for milk production of individual cows in relation to herd average lactation curve, differing...
Somatic cells and bacteriological examination of milk samples of goatsOriginal Paper
Barbora Gancárová, Kristína Tvarožková, Michal Uhrinčať, Lucia Mačuhová, Juliana Mačuhová, Vladimír Tančin
Czech J. Anim. Sci., 2025, 70(1):26-32 | DOI: 10.17221/163/2024-CJAS
Mastitis, mainly caused by contagious bacteria, is an important disease in dairy goat production, especially subclinical mastitis. The aim of the research was to study the relationship between somatic cell count (SCC) and presence of mastitis pathogens in goat milk during the period 2022–2024. A total of 987 udder-half milk samples were obtained from 5 goat farms in Slovakia. The presence of pathogens was determined by bacterial cultivation and grown colonies were identified by MALDI-TOF MS at the species level. Fossomatic 7 was used to determine SCC. To evaluate the frequency distribution of the samples, the following groups of SCC were...
Association between polymorphism within rabbit IGF1 gene and slaughter weight in Termond White rabbitsOriginal Paper
Anna Migdał, Sylwia Ewa Pałka, Michał Kmiecik, Olga Jarnecka, Ewelina Semik-Gurgul, Łukasz Migdał
Czech J. Anim. Sci., 2025, 70(1):33-41 | DOI: 10.17221/59/2024-CJAS
Growth traits belong to the most important economic traits in livestock. One of the genes involved in vertebrate growth and development is insulin-like growth factor 1 (IGF1). Therefore, in our study we hypothesised that within the sequence of rabbit IGF1 gene it is possible to identify a polymorphism that may influence growth, carcass or meat traits in rabbits. We identified 6 polymorphisms (g.89259430T>C; g.89259338C>G; g.89259328T>C; 89210029A>G; 89210349C>G and g.89194199C>T) within introns of the IGF1 gene. One polymorphism, g.89194199C>T, was analysed using polymerase chain reaction high-resolution melting...