ANTIOXIDANT STATUS, HORMONE LEVELS AND IMMUNITY IN CROSSBRED COWS OF DIFFERENT LEVELS OF PRODUCTION

Article Id: ARCC183 | Page : 492-497
Citation :- ANTIOXIDANT STATUS, HORMONE LEVELS AND IMMUNITY IN CROSSBRED COWS OF DIFFERENT LEVELS OF PRODUCTION.Indian Journal Of Animal Research.2013.(47):492-497
Anjali Aggarwal and Gulab Chandra
Address : Dairy Cattle Physiology Division, National Dairy Research Institiute, Karnal- 132 001, India

Abstract

Twelve crossbred (KF) cows were selected 60 days before expected date of calving for experiment.  The animals were grouped on the basis of their milk production as high (> 15 kg/day) and low (. Hormones, leptin, insulin and growth hormone have been estimated in plasma samples. Plasma leptin and insulin levels were lower and growth hormone was found to be higher in high yielding cows as compared to low yielding cows. There was significant variation in leptin, insulin and growth hormone levels between groups (Pxidant activity was 1377.39±23.00 and 1313.09±14.99 FRAP value (µM/L) in high and low yielding cows, respectively. The study shows that changes in leptin, insulin, growth hormone, glucose and NEFA play important roles in metabolic adaptation of cows to changes around calving and the levels of these hormones and metabolites vary with level of milk production.

Keywords

Leptin Insulin Growth hormone Lactating cows Antioxidant activity Immunity.

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