Abstract
The present study was conducted on (n = 15) Murrah lactating buffaloes; the objective was to study the hormonal profile and its correlation with the temperature-humidity index (THI) during the complete lactation of the Murrah buffaloes. The blood samples were collected on 7th and 15th day of parturition and thereafter at fortnightly intervals on days 30th, 45th, 60th, 75th, 90th, 105th, 120th, 135th, 150th, 165th, 180th, 195th, and 210th of lactation and on same days THI was recorded. The results showed significant variations in the concentrations of growth hormone (GH), insulin like growth factor-1 (IGF-1), insulin, and glucose during lactation period in Murrah buffaloes. However, Insulin was significantly and positively correlated with THI. Whereas, IGF-1 observed significant but negative correlation with THI.
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