유전공학 생산 돼지 성장흐로몬 ( rPST ) 투여에 관한 연구 2 . rPST 가 비육돈의 발육과 등지방두께에 미치는 영향 = Studies on Administration of Recombinant Porcine Somatotropin ( rPST ) 2 . The effect of recombinant porcine somatotropin on growth performance and backfat thickness of finishing pigs

다국어 초록 (Multilingual Abstract)

Eighty-four crossbred[D(♂)×YL(♀)] gilts and barrows about 50 ㎏ of body weight were used to investigate the effect of recombinant porcine somatotropin(rPST) administration on growth performance and backfat thickness of finishing pigs. Pigs were allotted in a 2×3 factorial arrangement with sex(gilts or barrows) and rPST (fl. 2 or 4㎎/head/day), fed containing 3.6 meal DE/㎏ and 1.2% lysine and measured live backfat thickness twice a week by the ultra backfat thickness. By the rPST administration, hoth of chilly gain and feed per 1㎏ gain were improved by 18%(p$lt;.05). It was found that the effect of rPST administration on daily gain and feed per 1㎏ gain was more effective in harrows than in gilts. The live backfat thickness started to decrease from about 14 days after rPST administration. As the duration of the rPST administration extended, the decreasing gap of live backfat thickness grow gradually larger and was higher in barrows than in gilts. These results suggested that sex effect difference, with respect to growth performance and backfat thickness was minimized by rPST administration.