低蛋白饲粮添加缬氨酸和异亮氨酸对断奶仔猪和育肥猪生长性能、血清生化指标和养分表观消化率的影响OA
Effects of Low-Protein Diet Supplementation with Valine and Isoleucine on Growth Performance,Serum Biochemical Indexes and Nutrient Apparent Digestibility in Weaning and Finishing Pigs
试验旨在研究低粗蛋白(CP)饲粮添加缬氨酸和异亮氨酸对断奶仔猪和育肥猪生长性能、血清生化指标和养分表观消化率的影响.试验一:240头断奶仔猪随机分为4组,分别设为对照组(T1组)、低CP组(T2组)和低CP组分别添加不同水平的缬氨酸和异亮氨酸组(T3组在低CP饲粮中添加1.0 g/kg缬氨酸+0.50 g/kg异亮氨酸,T4组在低CP饲粮中添加1.7 g/kg缬氨酸+1.0 g/kg异亮氨酸),试验期21 d.试验二:105头育肥猪随机分为3组,分别设为对照组(T1组)和低CP组分别添加不同水平的缬氨酸和异亮氨酸组(T3组在低CP饲粮中添加0.55 g/kg缬氨酸+0.60 g/kg异亮氨酸,T4组在低CP饲粮中添加1.05 g/kg缬氨酸+1.25 g/kg异亮氨酸),试验期21 d.结果表明:试验一,与T1组相比,T2组断奶仔猪末重、平均日增重(ADG)、腹泻率和腹泻指数极显著降低(P<0.01);与T2组相比,T3组和T4组断奶仔猪末重、ADG、腹泻率和腹泻指数极显著升高(P<0.01);与T1组相比,T3组断奶仔猪血清总蛋白(TP)含量显著降低(P<0.05),T2组和T3组断奶仔猪血清低密度脂蛋白(LDL)含量显著降低(P<0.05),T2组和T4组断奶仔猪血清三酰甘油(TG)含量显著降低(P<0.05),T2、T3组和T4组断奶仔猪粗纤维(CF)表观消化率极显著降低(P<0.01).试验二,与T1组相比,T3组育肥猪血清TP含量极显著升高(P<0.01),T3组和T4组育肥猪干物质(DM)、粗脂肪(EE)、CF和磷(P)表观消化率极显著升高(P<0.01).综上,饲粮CP水平降低时,断奶仔猪生长性能明显降低,添加缬氨酸和异亮氨酸后可以弥补因蛋白质降低对断奶仔猪生长性能、机体免疫、血清生化指标和育肥猪营养物质消化吸收的影响.
This study aimed to investigate the effects of low crude protein(CP)diet supplementation with valine and isoleucine on the growth performance,serum biochemical indexes and nutrient apparent digest-ibility in weaning and finishing pigs.Experiment one:a total of 240 weaned piglets were randomly allocated to 4 groups:control group(T1),low CP group(T2),and low CP+valine and isoleucine group(T3 group:low CP diet supplementation with 1.0 g/kg valine and 0.50 g/kg isoleucine,T4 group:low CP diet supplementa-tion with 1.7 g/kg valine and 1.0 g/kg isoleucine),and the experiment lasted for 21 d.Experiment two:a total of 105 finishing pigs were allocated to 3 groups:control group(T1),low CP+valine and isoleucine group(T3 group:low CP diet supplementation with 0.55 g/kg valine and 0.60 g/kg isoleucine,T4 group:low CP diet supplementation with 1.05 g/kg valine and 1.25 g/kg isoleucine),and the experiment lasted for 21 d.The results showed as follows:experiment one,compared with T1,T2 showed lower(P<0.01)final body weight,average daily gain(ADG),diarrhea rate and diarrhea index;compared with T2,T3 and T4 showed higher(P<0.01).Final body weight,ADG,diarrhea rate and diarrhea index in weaned piglets.Compared with T1,T3 had lower(P<0.05)serum total protein(TP)content,T2 and T3 showed lower(P<0.05)serum low density lipoprotein(LDL)content,T2 and T4 showed lower(P<0.05)serum triglyceride(TG)con-tent in weaned piglets T2,T3 and T4 showed lowe(P<0.01)apparent digestibility of crude fiber(CF)in weaned piglets.Experiment two,Compared with T1,T3 had higher(P<0.01)serum TP content and higher,apparent digestibility of dry matter(DM),ether extract(EE),CF and phosphorus(P)in finishing pigs.In con-clusion,reducing dietary CP dramatically decreased the growth performance in weaned piglets.However,valine and isoleucine supplementation could compensate for the effects of low protein on the growth perfor-mance,immunological function,serum biochemical indexes in weaned piglets,and nutrient digestion and absorption in finishing pigs.
张祥辉;秦龙山;祝丹;漆伟;蒋俊劼;吴昊;黄明
通威农业发展有限公司,四川 成都 610014通威农业发展有限公司,四川 成都 610014通威农业发展有限公司,四川 成都 610014通威农业发展有限公司,四川 成都 610014通威农业发展有限公司,四川 成都 610014通威农业发展有限公司,四川 成都 610014通威农业发展有限公司,四川 成都 610014
农业科技
低蛋白日粮断奶仔猪育肥猪生长性能血清生化养分表观消化率
low protein dietweaned pigletsfinishing pigsgrowth performanceserum biochemical indexesnutrient apparent digestibility
《饲料工业》 2026 (5)
48-54,7
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