Indian Journal of Animal Research

  • Chief EditorK.M.L. Pathak

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Indian Journal of Animal Research, volume 54 issue 5 (may 2020) : 558-562

Impact of Rumen-Protected Niacin on Milk Production Performance and Blood Biochemical Indexes of Dairy Cows Under Mild Heat Stress

Yong Chen, Guang Wang, Xingbo Yu, Li Zhen, Yongli Qu
1College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China.
Cite article:- Chen Yong, Wang Guang, Yu Xingbo, Zhen Li, Qu Yongli (2019). Impact of Rumen-Protected Niacin on Milk Production Performance and Blood Biochemical Indexes of Dairy Cows Under Mild Heat Stress. Indian Journal of Animal Research. 54(5): 558-562. doi: 10.18805/ijar.B-1109.
To study the influence of rumen-protected niacin on mild heat-stressed dairy cow, 30 healthy high-yielding dairy cows with similar parity were selected and randomly divided into three groups and were fed the rations with 0g/d, 6g/d and 12g/d rumen-protected niacin respectively. The results showed that the dairy cows were in mild heat stress during the experiment and the time of test day significantly affected the milk yield, FCM and respiration rate of cows. Rumen-protected niacin supplement neither altered the dairy cow’s body temperature, skin temperature and respiration rate, nor affected their milk yield and milk quality; however, it reduced the level of triglyceride and urea in serum.
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