The effects of heat stress on colostrum quality, passive transfer failure and disease incidence experienced by cows and calves raised in the Central Anatolian region, where temperature differences are very high, were investigated in a large population in order to prevent calf deaths and yield losses. Cow's daily temperature humidity index, 7-day average temperature humidity index, average temperature and humidity index (p<0.001) in which the cow lived during the dry period (2 months) were positive and significant among colostrum quality. It was observed that 21% of the calves had passive transfer failure and was below 8.4% brix, which is accepted as the cut-off value for passive transfer success. 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 with the serum brix value. A negative and significant correlation was observed between THI and serum brix value (p<0.05). It was observed that the success of passive transfer and the diseases 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.
Colostrum Quality Passive transfer immunity Passive transfer failure Temperature humidity index Heat stress
Birincil Dil | İngilizce |
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Konular | Veteriner Bilimleri (Diğer) |
Bölüm | Araştırma Makalesi |
Yazarlar | |
Erken Görünüm Tarihi | 19 Mart 2024 |
Yayımlanma Tarihi | |
Yayımlandığı Sayı | Yıl 2024Accepted Papers |