Journal article

Insulin-like growth factor-I and analogues increase growth in artificially-reared neonatal pigs

FR Dunshea, CS Chung, PC Owens, JF Ballard, PE Walton

British Journal Of Nutrition | C A B I PUBLISHING | Published : 2002

Abstract

Exogenous insulin-like growth factor (IGF)-I has been shown to increase growth rate in neonatal pigs while an analogue of IGF-I, long arginine (LR3) IGF-I, has been shown to be more potent than IGF-I in the rat. Therefore, two studies were conducted to determine whether IGF-I and LR3IGF-I increase growth in the artificially-reared neonatal pig. Expt 1 involved forty-two (2 kg initial weight) pigs infused with either control, IGF-I (2, 4 or 8 microg/h) or LR3IGF-I (2, 4 or 8 microg/h) infusions for 8 d. Pigs were weighed and then offered 1.7 MJ (gross energy) milk replacer/kg0.75 per d. Expt 2 involved eighteen pigs (2 kg initial weight) treated with control saline, IGF-I (8 microg/h) or LR3I..

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University of Melbourne Researchers