作 者：
张孟恩;韩睿;张敏;吴天君;彭严;华金玲;辛洪雷;王世琴;庞训胜
关键词：
妊娠母羊;泌乳母羊;羔羊;地顶孢霉培养物;酵母培养物
摘 要：
本试验旨在研究饲粮添加地顶孢霉培养物(ATC)和酵母培养物(YC)对湖羊母羊泌乳性能、营养物质表观消化率和羔羊生长性能的影响.选择体重[(46.68±5.22)kg]接近、胎次一致以及健康状况良好的妊娠后期(妊娠约80 d)湖羊母羊45只,随机分为3组,每组3个重复,每个重复5只母羊.对照组(CON组)饲喂基础饲粮,试验组分别在基础饲粮的基础上添加9 g/(d.只)ATC(ATC组)和20 g/(d.只)YC(YC组).预试期10 d,正试期105 d(包括妊娠期60 d,哺乳期45 d).结果表明:1)与CON组相比,饲粮添加ATC和YC对母羊妊娠第90~145天平均日采食量均无显著影响(P>0.05),但显著提高了妊娠第90~110天(ATC组除外)和第111~130天平均日采食量(P<0.05),同时显著提高了泌乳期第1~45天平均日采食量(P<0.05).2)与CON组相比,饲粮添加ATC和YC对母羊妊娠期和哺乳期体重均无显著影响(P>0.05).3)与CON组相比,ATC组母羊在产后第15天(P=0.076)和第45天(P=0.078)泌乳量均有升高的趋势.4)与CON组相比,饲粮添加ATC和YC对母羊妊娠期和哺乳期有机物、干物质和粗蛋白质等营养物质表观消化率均无显著影响(P>0.05),但有提高妊娠期(P=0.055)和哺乳期(P=0.071)粗脂肪表观消化率的趋势;同时,与CON组和YC组相比,ATC组母羊哺乳期酸性洗涤纤维表观消化率显著升高(P<0.05).5)与CON组相比,母羊饲粮添加ATC和YC对羔羊初生重、30日龄体重和45日龄断奶体重均无显著影响(P>0.05),有提高羔羊哺乳期(1~45日龄)平均日增重的趋势(P=0.061).综上所述,饲粮添加ATC和YC均能提高湖羊母羊妊娠后期和哺乳期干物质采食量,并减缓哺乳期第16~30天泌乳量的下降速度,其中饲粮添加ATC可一定程度上改善母羊泌乳期(第1~45天)总泌乳量和平均日泌乳量,饲粮添加YC可促进母羊产后体况恢复,但两者对羔羊生长性能均无显著作用.综合来看,湖羊母羊饲粮中添加ATC的应用效果略优于YC.
译 名：
Effects of Dietary Acremonium terricola Culture and Yeast Culture on Lactation Performance,Nutrient Apparent Digestibility of Hu Ewes and Growth Performance of Lambs
关键词：
pregnant ewes%lactating ewes%lambs%Acremonium terricola culture%yeast culture
摘 要：
This experiment was conducted to study the effects of dietary Acremonium terricola culture(ATC)and yeast culture(YC)on lactation performance,nutrient apparent digestibility of Hu ewes and growth per-formance of lambs.Forty-five healthy Hu ewes with similar body weight of(46.68±5.22)kg and consistent parity in the late pregnancy(about 80 days of pregnancy)were selected and randomly assigned into 3 groups with 3 replicates in each group and 5 ewes in each replicate.The control group(CON group)was fed a basal diet,and the experimental groups were either supplemented with 9 g/(d·head)ATC(ATC group)or 20 g/(d·head)YC(YC group)based on the basal diet.The adaptation period was 10 days,and the experi-mental period was 105 days including 60 days of pregnancy and 45 days of lactation.The results showed as fol-lows:1)compared with CON group,dietary ATC and YC had no significant effects on the average daily feed intake of ewes on days 90 to 145 in pregnancy(P>0.05),but significantly increased the average daily feed in-take on days 90 to 110(except for ATC group)and days 111 to 130 days in pregnancy(P<0.05),and sig-nificantly increased the average daily feed intake on days 1 to 45 in lactation(P<0.05).2)Compared with CON group,dietary ATC and YC had no significant effects on body weight of ewes in pregnancy and lactation(P>0.05).3)Compared with CON group,the milk yield of ewes in ATC group tended to be increased on day 15(P=0.076)and day 45(P=0.078)after delivery.4)Compared with CON group,dietary ATC and YC had no significant effects on the apparent digestibility of organic matter,dry matter and crude protein in pregnancy and lactation(P>0.05),but tended to increase the apparent digestibility of ether extract in pregnan-cy(P=0.055)and lactation(P=0.071);meanwhile,compared with CON and YC groups,the apparent di-gestibility of acid detergent fiber in ATC group in lactation was significantly increased(P<0.05).5)Com-pared with CON group,dietary ATC and YC had no significant effects on birth weight,body weight at 30 days of age and weaning weight at 45 days of age of lambs(P>0.05),and tended to increase the average dai-ly gain in lactation(1 to 45 days of age)(P=0.061).In conclusion,dietary ATC and YC can both increase dry matter intake of ewes in late pregnancy and lactation,and slow down the decrease of lactation yield on days 16 to 30 in lactation.Dietary ATC can improve the total and average daily milk yield of ewes in lactation(days 1 to 45)in a certain extent,and dietary YC can promote the postpartum body condition recovery of ewes.However,both of them had no significant effects on the growth performance of lambs.In summary,the appli-cation effects of dietary ATC on Hu ewes are slightly better than those of YC.[Chinese Journal of Animal Nu-trition,2023,35(12):7931-7941]
