摘要
选取90头体重约62 kg的杜×长×大三元杂交育肥猪,将其分为第1组(对照组)、第2组和第3组,每组30头猪。用猪场现行饲粮(对照饲粮)饲喂对照组猪;第2组和第3组分别饲喂不同蛋白质和赖氨酸含量的日粮。饲养试验结果表明:(1)与对照组相比,第2、3组猪平均日增重分别提高37.09%(P<0.01)、39.45%(P<0.01),饲料的转化率分别提高20.21%(P<0.01)、18.91%(P<0.01),每千克增重的饲料成本(7.51、8.01元/kg)较对照组(7.36元/kg)分别提高2.04%和8.83%。(2)第2、3组猪血清葡萄糖含量较对照组分别提高14.66%(P<0.05)、17.80%(P<0.05),血清总蛋白含量分别提高7.94%(P<0.05)、9.74%(P<0.05),血清甘油三酯含量显著提高(P<0.05),血清总胆固醇含量显著降低(P<0.05);第2组猪血清GPT活性显著地低于对照组(P<0.05),第3组猪血清GPT活性极显著地低于对照组(P<0.01);第3组猪血清GOT活性显著地低于对照组和第2组(P<0.05),血清T-SOD活性极显著地高于对照组(P<0.01),显著地高于第2组(P<0.05);第2、3组猪血清MDA含量较对照组分别减少21.27%(P<0.05)、22.17%(P<0.05)。基于试验结果可推断:育肥猪饲粮中蛋白质的适宜含量为15.25%,赖氨酸适宜含量为0.90%。
90 healthy,weighting about 62 kg, three-way crossbred(Duroc × Landrace× Yorkshire)finishing pigs were selected, then according to the similar body weight and the same gender were randomly divided into three groups:the experimental group 1 (the control group), the experimental group 2 and 3, each group 30 pigs. The control group pigs were fed to the current diet of the pig farm;the experimental group 2 pigs were fed to the group diet 2;the experimental group 3 pigs were fed to the group diet 3. The feeding experimental results were as follows: ① ADG of the experimental group 2, 3 increased respectively by 37.09%(P〈0,01) and 39.45% (P〈0.01) compared with the control group pigs. FCR of the experimental group 2 and 3 increased respectively by 20.21%(P〈0.01) and 18.91% (P〈0.01). The feed cost of per kilogram weight gain of the experimental group 2 and 3(7.51 yuan/kg, 8.01 yuan/kg)increased respectively by 2.04% and 8.83% compared with the control group(7.36 yuan/kg).② Glucose in the experimental group 2 and 3 pig serum increased respectively by 14.66% (P〈 0.05) and 17.80% (P〈0.05) compared with the control group. TP in the experimental group 2 and 3 pig serum increased respectively by 7.94% (P〈0.05) and 9.74% (P〈0.05).TG in the experimental group 2 and 3 pig serum was higher than the control group (P〈0.05). TC in the experimental group 2 and 3 pig serum was lower than the control group(P〈0.05),GPT activities of the experimental group 2 and 3 pig serum were lower than the control group(P〈0.05).GOT and T-SOD activities of the experimental group 3 pig serum were lower than the control group and the experimental group 2(P〈0.05). MDA in the experimental group 2 and 3 pig serum decreased respectively by 21.27% (P〈0.05) and 22.17% (P〈0.05) compared with the control group. Based to the results, the conclusion was made: the optimum concentration of protein and lysine in finishing pig diet was res^ctively 15.25% and 0.90%.
出处
《饲料工业》
北大核心
2017年第22期33-36,共4页
Feed Industry
关键词
育肥猪
蛋白质
赖氨酸
适宜含量
finishing pigs
protein
lysine
optimum concentration