低蛋白日粮添加复合酶对生长猪生长性能、养分利用率及有害气体排放的影响  

Effects of adding compound enzymes to low protein diet on growth performance,nutrient utilization efficiency,and harmful gas emissions of growing pigs

作　　者：祁化成 张言召[1] QI Huacheng;ZHANG Yanzhao(Yancheng Biological Engineering Higher Vocational Technology School,Yancheng,Jiangsu Province 224051,China)

机构地区：[1]盐城生物工程高等职业技术学校,江苏盐城224051

出　　处：《中国饲料》2024年第8期72-75,共4页China Feed

摘　　要：文章旨在探究低蛋白日粮添加复合酶对生长猪生长性能、养分利用率及有害气体排放的影响。试验将120头平均体重为(48.59±1.27)kg的90日龄杂交生长猪随机分为4组,每组5个重复,每个重复6头。试验为期101 d(其中预饲期8 d,正试期93 d)。试验日粮分别向低蛋白饲粮中添加0、300、600和900 mg/kg的复合酶制剂。结果表明,较对照组,日粮添加600和900 mg/kg复合酶可显著提高生长猪4.8%和6.7%的终末体重(P <0.05);显著提高生长猪8.5%和12.4%的平均日增重;显著提高生长猪3.4%和7.7%的平均日采食量(P <0.05);显著降低生长猪4.8%和6.4%的料重比(P <0.05)。较对照组,日粮添加600和900 mg/kg复合酶显著提高生长猪粗蛋白、氮和能量的表观消化率(P <0.05)。较对照组,日粮添加600和900 mg/kg复合酶显著降低生长猪的粪氮和粪磷排放(P <0.05);日粮添加600和900 mg/kg复合酶显著降低生长猪4~24 h氨气排放;此外,本试验未检测到硫化氢的排放。总之,本试验条件下,复合酶最适添加量为900 mg/kg。The article aims to explore the effects of adding complex enzymes to low protein diets on the growth performance,nutrient utilization efficiency,and harmful gas emissions of growing pigs.12090 day old hybrid growing pigs with an average weight of(48.59±1.27)kg were randomly divided into 4 groups,each with 5 replicates and 6 pigs per replicate.The experiment lasted for 101 days(including a pre feeding period of 8 days and a trial period of 93 days).Add 0,300,600,and 900 mg/kg of complex enzyme preparations to the low protein diet in the experimental diet.The results showed that compared with the control group,adding 600 and 900 mg/kg composite enzymes to the diet significantly increased the final body weight of growing pigs by 4.8%and 6.7%(P<0.05);Significantly increased the average daily weight gain of growing pigs by 8.5%and 12.4%;Significantly increased the average daily feed intake of growing pigs by 3.4%and 7.7%(P<0.05);Significantly reduce the feed to weight ratio of growing pigs by 4.8%and 6.4%(P<0.05).Compared with the control group,adding 600 and 900 mg/kg composite enzymes to the diet significantly increased the apparent digestibility of crude protein,nitrogen,and energy in growing pigs(P<0.05).Compared with the control group,adding 600 and 900 mg/kg composite enzymes to the diet significantly reduced the fecal nitrogen and phosphorus emissions of growing pigs(P<0.05);The addition of 600 and 900 mg/kg composite enzymes to the diet significantly reduced the ammonia emissions of growing pigs from 4 to 24 hours;In addition,no emissions of hydrogen sulfide were detected in this experiment.In summary,under the conditions of this experiment,the optimal amount of composite enzyme added is 900 mg/kg.

关 键 词：复合酶 生长猪 生长性能 表观消化率 有害气体 

分 类 号：S828[农业科学—畜牧学]