动物营养学报Issue(8)：2607-2613,7.DOI:10.3969/j.issn.1006-267x.2015.08.035
饲粮 L-精氨酸添加水平对育成期水貂生长性能、营养物质消化率及氮代谢的影响
Effects of Dietary L-Arginine Supplemental Level on Growth Performance, Nutrient Digestibility and Nitrogen Metabolism of Mink during Growing Period
摘要
Abstract
This study was conducted to study the effects of dietary L-arginine ( L-Arg) supplemental level on growth performance, nutrient digestibility and nitrogen metabolism of growing mink. Seventy healthy female mink at the age of 60-day were randomly divided into 7 groups with 10 replicates each and 1 mink per repli-cate. The mink in 7 groups were fed the basal diet ( L-Arg content was 1.45%) supplemented with 0 ( groupⅠ), 0.2% (group Ⅱ), 0.4% (group Ⅲ), 0.6% (group Ⅳ), 0.8% (group Ⅴ), 1.0% (group Ⅵ) and 1.2% ( group Ⅶ) L-Arg, respectively. The pre-test period lasted for 7 days and the trial lasted for 60 days. The results showed as follows:the final weight, average daily gain and feed/gain of the groupⅢ were higher than those of the other groups, but the differences were not significant ( P>0.05) . The dry matter ( DM) in-take of the group Ⅲ was extremely significantly higher than that of the group Ⅰ( P<0.01) and it was signifi-cantly higher than that of groupsⅡandⅥ( P<0.05) . The DM output of the groupⅢwas significantly higher than that of groupsⅠandⅣ( P<0.05) . The DM digestibility of the groupⅣwas higher than that of the oth-er groups, but the difference was not significant ( P>0.05) . The protein digestibility of the group Ⅳ was sig-nificantly higher than that of groups Ⅰ, Ⅱ, Ⅲ, Ⅴ and Ⅶ (P<0.05). The fat digestibility of the group Ⅳwas significantly higher than that of groupsⅤ,ⅥandⅦ( P<0.05) . Nitrogen intake of the groupⅢwas ex-tremely significantly higher than that of groupsⅠandⅡ( P<0.01) and it was significantly higher than that of groups Ⅴ and Ⅵ( P<0.05) . The fecal nitrogen of the groupⅢwas extremely significantly higher than that of groups Ⅰ and Ⅳ ( P<0.01) . The nitrogen deposition of the group Ⅲ was extremely significantly higher than that of groups Ⅰ and Ⅵ (P<0.01) and it was significantly higher than that of groups Ⅱ and Ⅴ (P<0.05). Net protein utilization of groups Ⅲ and Ⅳ was significantly higher than that of the group Ⅰ ( P<0.05) . Bio-logical value of protein of groups Ⅲ and Ⅳ was significantly higher than that of the group Ⅰ (P<0.05). In conclusion, when the dietary L-Arg supplemental level is 0. 4% to 0. 6% ( L-Arg total content is 1. 85% to 2.05%) , the growth performance, nutrient digestibility, nitrogen metabolism, net protein utilization and bio-logical value of protein of growing mink are optimal.关键词
育成期/水貂/生长性能/营养物质消化率/氮代谢Key words
growing period/mink/growth performance/nutrient digestibility/nitrogen metabolism分类
农业科技引用本文复制引用
万春孟,张铁涛,吴学壮,刘志,郭俊刚,高秀华,杨福合,邢秀梅,岳志刚..饲粮 L-精氨酸添加水平对育成期水貂生长性能、营养物质消化率及氮代谢的影响[J].动物营养学报,2015,(8):2607-2613,7.基金项目
国家自然资源平台专项“特种经济动物种质资源共享平台”(2005DKA21102) （2005DKA21102）
