福建农业学报2017，Vol.32Issue(10)：1057-1061,5.DOI:10.19303/j.issn.1008-0384.2017.10.002
不同饲粮赖氨酸水平对二元母猪生长性能和血清指标的影响
Effects of Lysine Content in Low Protein Fodder on Growth and Serum Biochemistry of Two-line Crossbred Gilts
摘要
Abstract
Effect of lysine content in a low-crude-protein fodder on the growth performance and serum biochemical indices of 70-to-100-kg-class gilts was studied.Ninety-six gilts crossbred between Landrace and Large White with an average body weight of (69.01 ±4.43) kg and similar physical conditions were randomly divided into 4 groups with 4 replicates each for the study.With an equal energy and balanced amino acid design,the digestible lysine (DLys)at 0.61％ (Group Ⅰ),0.66％ (Group Ⅱ),0.71％ (Group Ⅲ) or 0.76％ (Group Ⅳ) in the low protein diets were applied for the feeding.The results showed the gilts in Group Ⅱ had the highest average daily gain at 908.33 g · d-1 and the lowest feed/gain ratio at 2.77 (P＜0.05) among all.The Group Ⅱ gilts also showed a significantly lower serum urea nitrogen than the gilts in Group Ⅰ or Group Ⅳ (P＜0.05),but no significant difference in comparison with Group Ⅲ (P＞0.05).The serum insulin and insulin growth factor-Ⅰ in all test animals increased initially,and then,decreased as DLys increased (P＞ 0.05).The serum lysine and threonine of the Group Ⅰ gilts were significantly lower than those of Group Ⅳ (P＜0.05),while the other amino acids decreased initially and followed by an increase with increasing DLys (P＞0.05),which was lower in Group Ⅱ.Taking all factors into account,a daily DLys intake of 16.57 g · d-1 (or,as in Group Ⅱ,0.66％ DLys in the low-protein diet) would be optimal for the growth of gilts in the weight class.关键词
可消化赖氨酸/二元母猪/生长性能/血清指标/低蛋白质饲粮Key words
digestible lysine/two-line crossbred gilts/growth performance/serum parameters/low protein diet分类
农业科技引用本文复制引用
方桂友,刘景,缪伏荣,叶鼎承,董志岩..不同饲粮赖氨酸水平对二元母猪生长性能和血清指标的影响[J].福建农业学报,2017,32(10):1057-1061,5.基金项目
福建省科技计划项目——省属公益类科研院所基本科研专项(2015R1023-4) （2015R1023-4）
