Year: 2023 | Month: April | Volume 13 | Issue 2
Effect of Heat Stress on Adaptability and Physiological Responses in Cross-bred Cows
Abhishek Kumar
Pankaj Kumar Choudhary
Pankaj Kumar Maurya
Pramod Kumar
S.K. Maurya
Vikas Rai
DOI:10.30954/2277-940X.02.2023.12
Abstract:
Present study demonstrates the influence of heat stress on adaptability and physiological responses in cross-bred cattle. Eighteen
cross bred cows were selected from three districts of central plane zone of Uttar Pradesh, on the basis of their body weight,
body condition and parity and were divided into three groups, 6 cows were kept in each district. The experiments were carried
out in spring and summer season at Lucknow, Unnao and Sitapur districts of Uttar Pradesh. Physiological responses viz. Rectal
Temperature, Pulse rate and Respiration rate are recorded twice a day during both seasons. Temperature Humidity Index (THI)
of all three districts was also calculated. There was found a significant (P<0.01) deference in THI values in spring and summer
seasons in all three districts. There was no significant change in Physiological response like Rectal Temperature, Pulse Rate and
Respiration Rate in both seasons in morning hours but there was found significant (P<0.01) increase in Rectal Temperature,
Pulse Rate and Respiration Rate in summer season as compare to spring season at afternoon. Overall Mean±SEM of Iberia
heat Tolerance coefficient and Gaalaa’s heat Tolerance coefficient were significantly (P<0.01) more closure to 100 in spring
season as compared to summer season. Overall Mean±SEM of Benezera coefficient of Adaptability and Dairy Search Index
was significantly (P<0.01) more closure to 2.00 and 1.00 respectively in spring season. In conclusion Heat tolerance indices and
physiological responses show more adaptability in spring season as compared to summer season in cross-bred cows.
Highlights
- No significant change in physiological parameters during morning hours.
- Better adaptation in spring season as compared to summer season.
© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
Print This Article Email This Article to Your Friend
