Year: 2015 | Month: April | Volume 5 | Issue 1
Changes in Hormones of Somatotropic Axis during Transition Period in Murrah Buffaloes (Bubalus bubalis) Supplemented with Vitamin E
Abstract:
The present study was aimed to assess the effect of vitamin E supplementation on GH-insulin–IGF-1 axis in Murrah buffaloes during transition period. The Murrah buffaloes (n = 12) were selected during their late gestation from National Dairy Research Institute (NDRI) livestock herd and divided randomly into two groups, comprising of 6 each. Buffaloes of group I were given only the control diet, while group II were supplemented with 2000 IU/day/head vitamin E along with control feed. Blood sample were collected from each buffalo at weekly interval from day -21 to day +21 relative to parturition by jugular vein- puncture. Growth hormone (GH) -IGF-1 and insulin were quantified by bovine specific ELISA test kit. The results revealed non significant difference in circulatory concentration of insulin and GH during transition period between the two groups. However, insulin and IGF-I magnitude of decline was significantly greater in Group I. It was concluded that decline in the levels of these hormones during transition period was a physiological phenomenon that was associated with negative energy balance. Dietary supplementation of Vitamin E had no direct influence on peripheral profiles of these hormones during transition period
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