Evaluation of colostrum quality and passive transfer immunity in terms of heat stress and disease incidence in Holstein cattle in Central Anatolia
Küçük Resim Yok
Tarih
2024
Yazarlar
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Yayıncı
Ankara Univ
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The effects of heat stress on colostrum quality, passive transfer failure, and disease incidence were investigated in a large population in order to prevent calf morality and yield losses in Holstein cows and calves. There was a statistically significant correlation between colostrum quality and the daily temperature humidity index, 7-day average temperature stress, and average temperature humidity indexes experienced by the cows during the dry period (P<0.001). It was observed that passive transfer failure occurred in 21% of the calves. There was a significant positive correlation (P<0.05) between the relative humidity and the temperature and humidity index values of the day of birth and the calf serum brix value. A negative and significant correlation was observed between Temperature-Humidity Index (THI) and serum brix value (r =-10, P<0.01). It was observed that the passive transfer success and diarrhea and pneumonia that were overcome in the first 365-day period showed a negative correlation (P<0.01). As a result, it has been observed that the heat stress experienced by cows and calves affects colostrum quality and passive transfer success, which also affects development and protection from diseases.
Açıklama
Anahtar Kelimeler
Colostrum Quality, Heat stress, Passive transfer failure, Passive transfer immunity, Temperature humidity index
