CAJ | 학술논문

本试验采用单因子完全随机试验设计，选择60只3月龄左右杜寒 F1代公羔进行试验，测定不同水平葡萄渣对羔羊生产性能、屠宰性能和养分消化代谢的影响。本试验设4个饲粮处理组，每个处理15个重复，每个重复一只羊，Ⅰ为基础饲粮，Ⅱ、Ⅲ和Ⅳ处理组为饲粮中分别含有8％，16％和24％的葡萄渣，缩合单宁（condensed tan-nins，CT）含量分别为0，1．5，3．0和4．5 g／kg。结果表明，Ⅱ、Ⅲ、Ⅳ组羔羊日采食量、日增重、胴体重、屠宰率和胴体脂肪含量都显著高于Ⅰ组（P ＜0．05），N 表观存留率极显著高于Ⅰ组（P ＜0．01），但Ⅰ组羔羊的酸性洗涤纤维和N 表观消化率显著高于Ⅳ组（P ＜0．05）；Ⅱ组羔羊的饲料转化率显著高于Ⅰ组（P ＜0．05），净肉率极显著高于Ⅰ组（P ＜0．01）。随着 CT 含量的增加，羔羊的 N、中性洗涤纤维和酸性洗涤纤维表观消化率逐渐降低，N 的表观存留率逐渐升高，综合考虑羔羊日增重、饲料转化率、屠宰性能和养分利用率等指标，饲粮中葡萄渣以8％～16％为宜。
본시험채용단인자완전수궤시험설계，선택60지3월령좌우두한 F1대공고진행시험，측정불동수평포도사대고양생산성능、도재성능화양분소화대사적영향。본시험설4개사량처리조，매개처리15개중복，매개중복일지양，Ⅰ위기출사량，Ⅱ、Ⅲ화Ⅳ처리조위사량중분별함유8％，16％화24％적포도사，축합단저（condensed tan-nins，CT）함량분별위0，1．5，3．0화4．5 g／kg。결과표명，Ⅱ、Ⅲ、Ⅳ조고양일채식량、일증중、동체중、도재솔화동체지방함량도현저고우Ⅰ조（P ＜0．05），N 표관존류솔겁현저고우Ⅰ조（P ＜0．01），단Ⅰ조고양적산성세조섬유화N 표관소화솔현저고우Ⅳ조（P ＜0．05）；Ⅱ조고양적사료전화솔현저고우Ⅰ조（P ＜0．05），정육솔겁현저고우Ⅰ조（P ＜0．01）。수착 CT 함량적증가，고양적 N、중성세조섬유화산성세조섬유표관소화솔축점강저，N 적표관존류솔축점승고，종합고필고양일증중、사료전화솔、도재성능화양분이용솔등지표，사량중포도사이8％～16％위의。
A total of 60 hybrid 3-month-old Dorper (♂)× Small Tail Han sheep (♀)F1 male lambs were ran-domly allocated to 4 groups with 15 animals per group to determine the effect of different levels of grape pom-ace on nutrient digestibility,body weight gain,and carcass quality.The control group (group Ⅰ)was fed a base diet without grape pomace,while the trial groups were fed diets with grape pomace added to the base diet at 8%,16% or 24% on a dry weight basis (groups Ⅱ,Ⅲ and Ⅳ),respectively.The condensed tannin (CT) levels in the diets for each group were 0,1.5,3.0 and 4.5 g/kg,respectively.The apparent digestibility of acid detergent fiber (ADF)and N of the control group were significantly higher than group Ⅳ(P <0.05).In contrast,the lambs in trial groups had significantly higher average daily feed intake,average daily gain,carcass weight,dressing out rate and GR values (carcass fat cotent)(P <0.05),as well as a higher N retention rate (P <0.01),than the control group.The feed conversion rate (P <0.01)and carcass net meat content of groupⅡ were significantly higher (P <0.05)than for the control group.With increase of CT content in the diet,ap-parent digestibility of N,ADF and neutral detergent fiber (NDF)gradually decreased.However,apparent N retention increased.In conclusion,dietary supplementation with 8% - 16% of grape pomace had a positive effect on feed conversion efficiency,average daily body weight gain,carcass characteristics and nutrient utilization.