安徽农业科学2011，Vol.39Issue(2)：1036-1039,4.
育肥期新美系长白猪适宜营养水平的研究
Optimal Nutritional Level for New American Strain of Landrace Pigs during Fattening Period
摘要
Abstract
[ Objective] To investigate the effects of different nutrient levels on production performance, nutrients apparent digestibility and carcass quality, and determine the optimal levels of energy, crude protein, calcium and phosphorus in diet for the Landrace pigs during fattening stage. [ Method ] A total of 36 Landrace pigs, healthy, at the same parity and with close weaning age and similar body weight (70±1 )kg were selected. They were divided into nine experimental groups randomly. The orthogonal 4 * 3 factorial trial was used and 9 kinds of diets were designed. Then the indexes of production performance, nutrients apparent digestibility and carcass quality were determined, respectively.The preliminary trial lasted for 7 d, and the trial lasted for 42 d. [ Result ] The levels of crude protein and calcium had significant effects on the average daily gain( P ＜0.05 ), and the energy level had extremely significant effects on the average daily gain (P ＜0.01 ). The levels of energy, crude protein, calcium and phosphorus had different effects on the apparent digestibility of nutrients in varying degrees. The crude protein level had significant effects on the backfat P2 ( P ＜ 0.05 ); the energy level had significant effects on the backfat P2 and backfat PI ( P ＜ 0.05 ); and the calcium level had significant effects on backfat P2 and lean meat percentage( P ＜ 0.05 ). [ Conclusion ] During the fattening period, the requirement of digestible energy, ctude protein, calcium and phosphorus for the new strain of Landrace pigs was 13.39 MJ/kg,16.00％, 1.45％ and 0.90％, respectively.关键词
长白猪/营养水平/生产性能/表观消化率/胴体品质Key words
Landrace pigs/ Nutritional levels/ Production performance/ Apparent digestibility/ Carcass quality分类
农业科技引用本文复制引用
何若钢,张家富,覃小荣,罗丽萍,刘桂武,李秀宝,陈中华..育肥期新美系长白猪适宜营养水平的研究[J].安徽农业科学,2011,39(2):1036-1039,4.基金项目
广西壮族自治区水产畜牧局基金"新美系原种猪联合选育研究"(桂渔牧科072410). （桂渔牧科072410）
