Stimulation of pig growth performance by recombinant porcine growth hormone
1989
Chung, C.S. (Chungbuk National Univ., Cheongju (Korea R.). Coll. of Agriculture) | Kwon, K. (Yonam Junior, Songhwan (Korea R.). Coll. of Livestock and Horticulture) | Han, K.B. | Kim, I.S. (Lucky Central Research Inst., Taejon (Korea R.))
The present study was undertaken to determine the effects of recombinant porcine growth hormone (rpGH, supplied by Lucky, Ltd., Korea) on growth performance of growing pigs. Twelve barrows with an average initial live weight of 48kg were allocated to either control group (n=6) or rpGH group (n=6). Recombinant pGH (70ug/kg BW) or vehicle was injected in the extensor muscle daily for 49 days. Pigs were fed a diet containing 16.45 % of crude protein and 0.85 % of lysine. As expected, serum pGH was elevated by rpGH injection. Administration of rpGH increased average daily gain by 6 % (1.04 vs 1.11kg), improved feed/gain by 10 % (3.203 vs 2.895; p0.05), decreased backfat thickness by 19 % (3.60 vs 2.91cm; p0.01), and increased loin eye area by 5 % (36.84 vs 38.53cm** (2)). These results indicate that rpGH administration improves swine growth performance, suggesting that considerable potential exists for development of a GH-based growth promotant for the swine industry
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