Effect of passive immunization against somatostatin using a high-affinity antiserum on growth, IGF-I and thyroid hormone levels in neonatal lambs reared under warm or cold environmental conditions

agneau animal production cold cordero crecimiento croissance facteur de croissance igf factor de crecimiento igf frio froid growth hormonas de la tiroide immune serum immunisation immunization immunserum inmunidad pasiva insulin-like growth factor lambs passive immunity production animale somatostatin somatostatina somatostatine suero inmune temperatura temperature thyroid hormones