动物营养学报Issue(2)：444-454,11.DOI:10.3969/j.issn.1006-267x.2016.02.018
饲粮营养限制对早期断奶湖羊羔羊生长性能以及内脏器官发育的影响
Effects of Nutritional Restriction on Growth Performance and Visceral Organ Development of Early-Weaned Hu Lambs
摘要
Abstract
The aim of this study was to assess the effects of dietary nutritional restriction on growth perform-ance and visceral organ development of early-weaned Hu lambs.Sixty-four 17-day-old Hu lambs were random-ly divided into four groups, including control ( CON) group, 20%of protein restriction ( PR) group, 20%of energy restriction ( ER) group, 20%of energy and protein restrictions ( BR) group.Each group had four rep-licates with four lambs per replicate ( half male and half female) .The pretest lasted for 4 days, and the trial lasted for 40 days.The intakes of milk replacer and starter were recorded, and all the lambs were weighed at 20, 40 and 60 days of age, respectively, then one lamb per replicate was slaughtered at 40 and 60 days of age for weighing visceral organs.The results showed as follows:1) average daily gain ( ADG) of lambs at 21 to 40 days of age in PR and BR groups and at 41 to 60 days of age in PR, ER and BR groups was significantly lower than that in CON group ( P<0.05); feed to gain ratio of lambs at 21 to 40 days of age in experimental groups and at 41 to 60 days of age in PR and BR groups was significantly higher than that in CON group ( P<0.05) .2) Liver weight and its percentage of live weight before slaughter, rumen weight and its percentage of complex stomachs were significantly decreased in PR, ER and BR groups compared with those in CON group at 40 days of age( P<0.05) , and were significantly decreased in ER and BR groups compared with those in PR and CON groups at 60 days of age ( P<0.05) .In conclusion, protein restriction can reduce growth perform-ance ( 21 to 60 days of age) and development of visceral organs ( 21 to 40 days of age) , and energy restriction can reduce development of visceral organs, especially liver and rumen, of early-weaned lambs.关键词
羔羊/营养限制/生长性能/器官发育Key words
lamb/nutritional restriction/growth performance/organ development分类
农业科技引用本文复制引用
祁敏丽,柴建民,王波,孟春花,陶晓箐,张蓉,刁其玉,张乃锋..饲粮营养限制对早期断奶湖羊羔羊生长性能以及内脏器官发育的影响[J].动物营养学报,2016,(2):444-454,11.基金项目
公益性科研专项“南方地区幼龄草食畜禽饲养技术研究”（201303143）；国家肉羊产业技术体系建设专项资金 （）
