Authors : Mayela Patricia Gallegos de la Hoya, Jose A. Toca Ramirez, Pedro Rodriguez Contreras, Carmen Elisa Pinzon Diaz, Fanny Olivia Reveles Saucedo and Jose Salome Quintero Saucedo
Abstract: Leptin is produced in the adipose tissue and other organs. Its main function is to maintain glucose homeostasis indicating the status of the reserve of energy to ventromedial nucleus of the hypothalamus; target of leptin which regulates eating behavior, so this is considered a sensor of energy balance. This hormone is involved in the onset of puberty and acts as a critical hormonal signal of nutritional status in the neuroendocrine regulation of pulsatile secretion of Growth Hormone (GH) and release of Gonadotropin-Releasing factor (GHRH) mediated by Neuropeptide Y (NPY). This hormone is involved in the onset of puberty and acts as a critical hormonal signal of nutritional status in the neuroendocrine regulation of pulsatile secretion of GH and release of GHRH mediated by NPY. Leptin also controls the hypothalamic-hypophysis-gonadal axis through synthesis and release of hypothalamic and hypophyseal gonadotrophins (GnRH, FSH and LH) and potentiates the effects of insulin through which regulates the synthesis of blood glucose. The regulation of secretion of this hormone is at long term and depends on the variation in body mass and stimulating effects of insulin because of this, it has great importance in the transition period in dairy cattle in which during the time of drying the body condition and fat reserves are recovered for postpartum performance. The cattle breed tically determines the amount of body fat and leptin secretion which in turn determines the quality of the carcass.
Mayela Patricia Gallegos de la Hoya, Jose A. Toca Ramirez, Pedro Rodriguez Contreras, Carmen Elisa Pinzon Diaz, Fanny Olivia Reveles Saucedo and Jose Salome Quintero Saucedo, 2015. Role of Leptin in Cattle Production: Review. Journal of Animal and Veterinary Advances, 14: 81-90.