摘要
试验在商业饲养条件下,探讨不同蛋白水平对育肥猪腹垂指数及背膘厚度的影响.试验选取初重(70.5±0.15) kg社长大三元育肥猪45头,共分3个处理,每个处理5个重复,每个重复3头为一圈.对照组为低蛋白(CP 13％)组,处理1组在对照组的基础上增加豆粕用量,蛋白水平为14％,处理2组蛋白水平为15％.正式试验期为45 d.研究发现,与对照组相比较,处理2组腹垂指数增加比率较大,为5.0％(P＞0.05),更趋向理想腹垂指数(典型三元猪理想腹垂指数为3)；而处理2组背膘增加比率最低,为20％(P＞0.05).
Abstract
This experiment was conducted with commercial breeding pigs to discuss the effect of different protein levels on abdominal vertical index and backfat in growing and fattening pigs.45 three-line crossbred pigs (Duroc×Landrace×Yorkshire)with initial BW of (70.5±0.15) kg,were allocated to three treatments,each treatment had three pigs with five repeats in a performance trial.The control group was low protein(CP13％),treatment one increased soya bean meal based on the control group (CP14％).The protein of treatment two was 15％ . The trial was conducted for 45 days.The research showed that:group 2 of abdominal vertical exponentially larger ratio was 5.0％ (P＞0.05),which is more ideal (The typical ideal three-line crossbred pigs abdominal vertical index is 3); And group 2 of back fat increased the lowest rate of 20％ (P＞0.05).
国家科技期刊平台
NSTL
维普
万方数据