胍基乙酸和酿酒酵母菌与纤维素酶复合物对肉羊生长性能、消化代谢、屠宰性能及肉品质的影响  

Effects of Guanidine Acetic Acid,Saccharomyces cerevisiae and Cellulase Complex on Growth Performance,Digestion and Metabolism,Slaughter Performance and Meat Quality of Mutton Sheep

作　　者：李秀丽 石英 庞纪彩 杨菊凤 李燕舞 张春昊 曹江涛 丁应龙 杨庆利 李强 解红梅 LI Xiuli;SHI Ying;PANG Jicai;YANG Jufeng;LI Yanwu;ZHANG Chunhao;CAO Jiangtao;DING Yinglong;YANG Qingli;LI Qiang;XIE Hongmei(Shandong Vocational Animal Science and Veterinary College,Weifang 261061,China;Fangzi District Huangqi Fort Veterinary Station,Weifang 262118,China;Shandong Dongminglige Trading Co.,Ltd.,Heze 274000,China;Caoxian Yuanhong Agriculture and Animal Husbandry Co.,Ltd.,Heze 274000,China)

机构地区：[1]山东畜牧兽医职业学院,潍坊261061 [2]坊子区黄旗堡畜牧兽医站,潍坊262118 [3]山东省东明利格贸易有限公司,菏泽274000 [4]曹县元弘农牧有限公司,菏泽274000

出　　处：《动物营养学报》2024年第7期4428-4446,共19页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：山东省羊产业技术体系(SDAIT-10-05);山东省高等学校畜禽良种繁育新技术研发中心项目(2022);潍坊市科技发展计划(2022GX027)。

摘　　要：本试验旨在研究饲粮中添加胍基乙酸(GAA)和酿酒酵母菌与纤维素酶复合物(SCC)对肉羊生长性能、消化代谢、屠宰性能、肉品质及经济效益的影响。采用3×2完全随机试验设计,设3个GAA添加水平(0、0.03%、0.06%,基于饲粮干物质重量)和2个SCC添加水平(0、0.01%,基于饲粮干物质重量)。选取断奶、去势的体重在(25.62±2.01)kg的特克塞尔羊与杜泊羊杂交公羊72只,随机分成6组,每组3个重复,每个重复4只羊。预试期7 d,正试期60 d。结果显示:1)与未添加GAA和SCC相比,饲粮添加0.06%GAA或者0.01%SCC显著提高平均日增重(P<0.05),显著降低料重比(P<0.05);GAA和SCC的互作对平均日增重和料重比有显著影响(P<0.05)。2)与未添加GAA和SCC相比,饲粮添加0.06%GAA显著提高氮表观消化率和氮沉积率(P<0.05),显著降低粪氮(P<0.05);饲粮添加0.01%SCC显著提高氮、中性洗涤纤维、酸性洗涤纤维表观消化率和氮沉积率(P<0.05),显著降低粪氮(P<0.05);GAA和SCC的互作对氮表观消化率、氮沉积率及粪氮有显著影响(P<0.05)。3)与未添加GAA和SCC相比,饲粮添加0.06%GAA显著提高胴体重和眼肌面积(P<0.05);饲粮添加0.01%SCC显著提高胴体重(P<0.05);GAA和SCC的互作对胴体重和眼肌面积均有显著影响(P<0.05)。4)与未添加GAA和SCC相比,饲粮添加0.06%GAA或者0.01%SCC显著提高脾脏指数(P<0.05);GAA和SCC的互作对各器官指数均无显著影响(P>0.05)。5)与未添加GAA和SCC相比,饲粮添加0.06%GAA显著提高背最长肌pH_(2)4 h、45 min亮度(L 45 min)值、24 h亮度(L 24 h)值(P<0.05),显著降低滴水损失(P<0.05);饲粮添加0.01%SCC显著提高背最长肌L 45 min值和L 24 h值(P<0.05);GAA和SCC的互作对背最长肌pH_(2)4 h、L 45 min值、L 24 h值和滴水损失有显著影响(P<0.05)。6)与未添加GAA和SCC相比,饲粮添加0.06%GAA或者0.01%SCC显著提高肌肉粗蛋白质含量(P<0.05);GAA和SCC的互作对肌肉粗蛋白质含量有显著影响(P<0.05)。7)饲�This experiment was conducted to investigate the effects of dietary supplemented with guanidine acetic acid(GAA),Saccharomyces cerevisiae and cellulase complex(SCC)on growth performance,digestion and metabolism,slaughter performance,meat quality and economic benefit of mutton sheep.A 3×2(GAA×SCC)completely randomized trial design was adopted with GAA supplemental levels of 0,0.03%and 0.06%and SCC supplemental levels of 0 and 0.01%based on dietary dry matter weight.Seventy-two weaned and castrated Texel×Dolper hybrid rams were randomly divided into 6 groups with 3 replicates per group and 4 sheep per replicate.After the pretest period of 7 days,it entered the trial period of 60 days.The results showed as follows:1)compared with non-added GAA and SCC,dietary supplemented with 0.06%GAA or 0.01%SCC significantly increased the average daily gain(P<0.05),and significantly decreased the feed to gain ratio(P<0.05).GAA and SCC had significant interaction effects on the average daily gain and feed to gain ratio(P<0.05).2)Compared with non-added GAA and SCC,dietary supplemented with 0.06%GAA significantly increased the nitrogen apparent digestibility and nitrogen deposition rate(P<0.05),and significantly decreased the fecal nitrogen(P<0.05);dietary supplemented with 0.01%SCC significantly increased the apparent digestibility of nitrogen,neutral detergent fiber and acid detergent fiber and nitrogen deposition rate(P<0.05),and significantly decreased the fecal nitrogen(P<0.05).The interaction of GAA and SCC had significant effects on the nitrogen apparent digestibility,nitrogen deposition rate and fecal nitrogen(P<0.05).3)Compared with non-added GAA and SCC,dietary supplemented with 0.06%GAA significantly increased the carcass weight and eye muscle area(P<0.05),while dietary supplemented with 0.01%SCC only significantly increased the carcass weight(P<0.05).GAA and SCC had significant interaction effects on the carcass weight and eye muscle area(P<0.05).4)Compared with non-added GAA and SCC,dietary supplemented with 0.06%GA

关 键 词：胍基乙酸 酿酒酵母菌与纤维素酶复合物 生长性能 消化代谢 屠宰性能 肉品质 经济效益 

分 类 号：S816[农业科学—饲料科学]