浓缩脱酚棉籽蛋白生长猪消化能评定及其对仔猪生长性能、血清生化指标和养分表观消化率的影响  

Digestible Energy Evaluation of Concentrated Degossypolized Cottonseed Protein for Growing Pigs and Its Effects on Growth Performance,Serum Biochemical Indexes and Nutrient Apparent Digestibilities of Piglets

作　　者：赵建飞 李瑞 宋泽和 范志勇 贺喜 ZHAO Jianfei;LI Rui;SONG Zehe;FAN Zhiyong;HE Xi(Hunan Co-Innovation Centre of Animal Production Safety,Engineering Research Centre of Feed Safety and Efficient Use of Ministry of Education,College of Animal Science and Technology,Hunan Agricultural University,Changsha 410128,China;College of Animal Science and Technology,Northwest A&F University,Yangling 712100,China)

机构地区：[1]湖南农业大学动物科学技术学院,饲料安全与高效利用教育部工程研究中心,湖南畜禽安全生产协同创新中心,长沙410128 [2]西北农林科技大学动物科技学院,杨陵712100

出　　处：《动物营养学报》2021年第1期190-198,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家重点研发计划(2016YFD0501200);湖南农业大学“双一流”建设项目(SYL201802015,SYL201802009);湖南省科技人才托举工程(2020TJ-Q02)。

摘　　要：本研究旨在通过猪消化代谢试验测定浓缩脱酚棉籽蛋白(CDCP)生长猪消化能,同时研究其对仔猪生长性能、血清生化指标和养分表观消化率的影响。试验选取65日龄、体重(38.80±2.60)kg的“杜×(长×大)”健康阉公猪8头,随机分成2组(每组4个重复,每个重复1头猪),分别饲喂基础饲粮和试验饲粮(80%基础饲粮+20%CDCP),单笼饲养,采用交叉法进行消化代谢试验测定消化能。然后选取(31±2)日龄、体重(10.00±0.60)kg的“杜×(长×大)”健康仔猪132头,按随机区组设计分成2组(对照组和CDCP组),每组6个重复,每个重复11头猪。对照组饲喂基础饲粮(鱼粉用量为4%),CDCP组饲喂试验饲粮(利用CDCP完全替代基础饲粮中的鱼粉),2种饲粮消化能和回肠标准可消化赖氨酸、蛋氨酸、苏氨酸、色氨酸水平均满足或超过NRC(2012)仔猪营养需要。试验期28 d。结果显示:生长猪对CDCP的能量表观消化率为86.64%,消化能为15.61 MJ/kg。2组仔猪的平均日增重、平均日采食量、料重比、腹泻率和血清生化指标差异均不显著(P>0.05);CDCP组的能量和粗脂肪表观消化率显著低于对照组(P<0.05),而2组干物质、粗蛋白质和粗灰分表观消化率差异不显著(P>0.05)。综上所述,CDCP生长猪消化能为15.61 MJ/kg。在消化能和回肠标准可消化赖氨酸、蛋氨酸、苏氨酸、色氨酸水平满足或超过NRC(2012)条件下,CDCP替代饲粮中鱼粉不影响仔猪的生长性能。The purpose of this study was to determine the concentrated degossypolized cottonseed protein(CDCP)digestive energy for growing pigs through pig digestive metabolism experiment,and to study effects of CDCP on growth performance,serum biochemical indexes and nutrient apparent digestibilities of piglets.Eight healthy 65-day-old“Duroc×Landrace×Large White”barrows with body weight of(38.80±2.60)kg were selected and randomly divided into 2 groups with 4 replicates per group and 1 pig per replicate.Pigs in 2 groups were fed with basal diet and experimental diet(80%basal diet+20%CDCP),respectively.Pigs were single-cage feeding,a cross-over method was used for the digestion and metabolism test to determine the digestion energy.Then a total of 132 healthy(31±2)-day-old“Duroc×Landrace×Large White”piglets with body weight of(10.00±0.60)kg were selected and randomly divided into 2 groups(control group and a CDCP group)with 6 replicates per group and 11 pigs per replicate according to a random block design.Piglets in the control group were fed a basal diet(contained 5%fish meal),piglets in the CDCP group were fed an experimental diet(used CDCP to completely replace the fish meal in the basal diet),the digestible energy and standardized ileal digestibility lysine,methionine,threonine and tryptophan levels of two diets were meet or exceed the nutritional requirements of NRC(2012)for piglets.The experiment lasted for 28 days.The results showed that the apparent digestibility of energy of CDCP for growing pigs was 86.64%,and the digestive energy was 15.61 MJ/kg.There were no significant differences in average daily gain,average daily feed intake,feed to gain ratio,diarrhea rate and serum biochemical indexes between the two groups(P>0.05);the apparent digestibilities of energy and ether extract of CDCP group were significantly lower than those of the control group(P<0.05),but the apparent digestibilities of dry matter,crude protein and ash were no significant differences between the two groups(P>0.05).In summary,CDC

关 键 词：浓缩脱酚棉籽蛋白 仔猪 消化能 生长性能 

分 类 号：S828[农业科学—畜牧学]