低蛋白质氨基酸平衡饲粮对肥育猪生长性能、肌肉氨基酸和脂肪酸组成及含量的影响  

Effect of Reduced-protein-lysine-added Diet on Growth and Intramuscular Amino Acids and Fatty Acids of Finisher Pigs

作　　者：方桂友[1] 张玉宏 刘景[1] 董志岩[1] FANG Guiyou;ZHANG Yuhong;LIU Jing;DONG Zhiyan(Institute of Animal Husbandry and Veterinary Medicine Research,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350003,China;Longyan Agricultural School,Longyan,Fujian 364000,China)

机构地区：[1]福建省农业科学院畜牧兽医研究所,福建福州350003 [2]龙岩市农业学校,福建龙岩364000

出　　处：《福建农业学报》2021年第8期917-922,共6页Fujian Journal of Agricultural Sciences

基　　金：福建省科技计划公益类专项(2020R10260011)。

摘　　要：【目的】探讨低蛋白质氨基酸平衡饲粮对肥育猪生长性能、肌肉氨基酸和脂肪酸含量及组成的影响。【方法】选用90头平均体重为(59.5±3.6)kg的杜长大三元杂交猪,均衡分成3个处理组,每个处理组设置3个重复,每个重复含10头猪。1组设为对照组,饲喂饲粮含16.58%粗蛋白质(CP)、0.71%可消化赖氨酸(DLy),2、3组分别饲喂CP水平为14.58%和12.53%、DLy水平为0.71%的低蛋白质氨基酸平衡饲粮,试验期40 d。【结果】肥育猪平均日增重和料重比组间差异不显著(P>0.05);背最长肌氨基酸、脂肪酸含量和组成各组间均无显著差异(P>0.05)。【结论】在理想氨基酸模式下,饲粮粗蛋白质水平降低至12.53%,保持赖氨酸水平不变,不影响肥育猪的生长性能、肌肉氨基酸和脂肪酸的含量及组成。【Objective】Effects of reduced-protein diet with a lysine addition on the growth and the content and composition of intramuscular amino acids and fatty acids of pigs at finishing stage were determined to optimize the feeding at hog farms.【Method】Ninety Landrace x Large White x Duroc pigs with an initial body weight of 59.5±3.6 kg were randomly divided into 3 groups with 10 pigs in each of 3 replicates.As control,Group 1 was fed on forage containing 16.58%crude protein(CP)and 0.71%digestible lysine(DLy).Group 2 and Group 3 were treatments on diets of 14.58%and 12.53%CP,respectively,with a 0.71%DLy addition.The feeding lasted for 40 d prior to slaughtering for chemical analysis on longissimus muscles.【Result】Compare to control,the pigs in the treatment groups showed no significant differences on the average daily gain(ADG)or feed/gain ratio(F/G)(P>0.05).Neither the content or the composition of intramuscular amino acids and fatty acids in the longissimus muscles differed significantly among the 3 groups(P>0.05).【Conclusion】The results suggested that,so long as the DLy supply in the forage was kept constant at the adequate level,a reduction of CP up to 12.53%in the pig diet would not significantly alter the growth or the nutritional and eating quality of the pork meat.

关 键 词：生长性能 氨基酸组成 脂肪酸组成 低蛋白质饲粮 肥育猪 

分 类 号：S828[农业科学—畜牧学]