Animal Bioscience

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Performance of Holstein cows subjected to different cooling sessions during subtropical summer

  • Bah, Musa (Department of Livestock Management, University of Veterinary and Animal Sciences) ;
  • Javed, Khalid (Department of Livestock Management, University of Veterinary and Animal Sciences) ;
  • Pasha, Talat Naseer (Department of Animal Nutrition, University of Veterinary and Animal Sciences) ;
  • Shahid, Muhammad Qamer (Department of Livestock Management, University of Veterinary and Animal Sciences)
  • Received : 2021.06.21
  • Accepted : 2021.09.21
  • Published : 2022.11.01
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Abstract

Objective: This study aimed to determine the effect of different cooling sessions (CSs) as a water conservation strategy on physiological, and production responses and welfare in Holstein Friesian cows during subtropical summer in Pakistan. Methods: Twenty-one cows were subjected to three CS in a completely randomized design. The treatments were: i) eleven hours continuous cooling with sprinklers - control (CNT), ii) four CS, and iii) two CS. The CNT represented the practices of the commercial dairy farms in the area, while the other CSs were used as water reduction strategies. Each CS lasted for 1 h with a 12 min cycle (3 min water on and 9 min off) with a sprinkler flow rate of 1.25 L/min. Results: The average temperature humidity index of the shed and the outside open area were 81.9 and 82.5, respectively. The results showed that both physiological responses were highest in the 2CS group followed by the CNT and the 4CS (p = 0.001). The CNT and 4CS groups had similar milk yield (p = 0.040). The 4CS group had more lying and eating times than the CNT and 2CS groups (p = 0.000). The cortisol level in the 2CS group was 2.0 and 2.2 ㎍/dL more than the CNT and the 4CS groups, respectively (p = 0.000). Conclusion: In conclusion, the 4CS was more efficient in cooling the cows and had better welfare, as it yielded similar milk yield, and better physiological responses than the CNT despite using 90% less water.

Keywords

Acknowledgement

The authors are grateful for the support of the farm staff at the Dairy Animals Training and Research Centre, University of Veterinary and Animal Sciences, Lahore, Pakistan.

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