摘要
本试验旨在探究大麦青干草对肉羊生长性能、屠宰性能和肉品质的影响。选取45只体重[(33.93±1.11)kg]相近、体况良好的杜寒杂交断奶羔羊,随机分为5组,每组3个重复,每个重复3只羊。对照组饲喂基础饲粮,试验组分别以大麦青干草替代基础饲粮中25%(BH25组)、50%(BH50组)、75%(BH75组)和100%(BH100组)的玉米秸秆和羊草等粗饲料。预试期15 d,正试期60 d。结果表明:1)BH50、BH75和BH100组的料重比显著低于对照组(P<0.05)。2)BH75组的眼肌面积显著高于对照组(P<0.05)。3)BH50组的肌肉熟肉率显著高于对照组(P<0.05),BH100组的肌肉红度(a^(*))值显著高于对照组(P<0.05)。与对照组相比,试验组的肌肉黄度(b^(*))值呈现降低趋势(P=0.091),肌肉粗脂肪含量呈现上升趋势(P=0.069)。4)BH100组的肌肉谷氨酸(Glu)含量显著高于对照组(P<0.05)。5)BH75组的肌肉月桂酸(C12∶0)含量显著高于对照组(P<0.05),BH25组的肌肉十五碳烯酸(C15∶1)和花生四烯酸(C20∶4)含量显著高于对照组(P<0.05)。与对照组相比,试验组的肌肉总多不饱和脂肪酸(∑PUFAs)含量呈现上升趋势(P=0.094)。综上所述,大麦青干草替代基础饲粮中50%及以上的玉米秸秆和羊草,不仅提高了肉羊饲料利用效率,而且在提高屠宰性能、改善肉品质、优化肌肉氨基酸和脂肪酸组成方面具有良好的效果。
This study aimed to investigate the effects of barley hay on growth performance,slaughter performance and meat quality of mutton sheep.Forty-five weaned Dorper×thin-tailed Han crossbred lambs with similar body weight[(33.93±1.11)kg]were randomly assigned to five groups,with three replicates per group and three lambs per replicate.The control group was fed a basal diet,and the experimental groups were used 25%(BH25 group),50%(BH50 group),75%(BH75 group),and 100%(BH100 group)barley hay replacing the roughage(corn straw and wildrye)in the basal diet,respectively.The pre-experimental period lasted for 15 days,and the experimental period lasted for 60 days.The results showed as follows:1)the feed to gain ratio of BH50,BH75 and BH100 groups was significantly lower than that of the control group(P<0.05).2)The loin eye area of the BH75 group was significantly higher than that of the control group(P<0.05).3)The muscle cooked meat percentage of the BH50 group was significantly higher than that of the control group(P<0.05),and the muscle redness(a^(*))value of the BH100 group was significantly higher than that of the control group(P<0.05).Compared with the control group,the muscle yellowness(b^(*))value of experimental groups showed a decreasing trend(P=0.091),and the muscle ether extract content showed an increasing trend(P=0.069).4)The muscle glutamic acid(Glu)content of the BH100 group was significantly higher than that of the control group(P<0.05).5)The muscle lauric acid(C12∶0)content of the BH75 group was significantly higher than that of the control group(P<0.05),and the muscle pentadecenoic acid(C15∶1)and arachidonic acid(C20∶4)contents of the BH25 group were significantly higher than those of the control group(P<0.05).Compared with the control group,the muscle total polyunsaturated fatty acids(∑PUFAs)content of experimenal groups showed an increasing trend(P=0.094).In conclusion,the barley hay replacing 50%or more of corn straw and wildrye in the basal diet not only improves feed utilization efficiency in mutton sheep,but also demonstrates positive effects on improving the slaughter performance,enhancing the meat quality and optimizing the amino acid and fatty acid composition of muscle.
作者
海拉罕
哈斯额尔敦
白晨
王晓渊
韩国丽
敖长金
刘志萍
HAI Lahan;KHAS Erdene;BAI Chen;WANG Xiaoyuan;HAN Guoli;AO Changjin;LIU Zhiping(College of Animal Science,Inner Mongolia Agricultural University,Hohhot 010018,China;Institute of Crop Science,Inner Mongolia Academy of Agricultural and Animal Husbandry,Hohhot 010031,China)
出处
《动物营养学报》
北大核心
2025年第9期6098-6109,共12页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家农业农村部大麦青稞产业技术体系项目(CARS-05-02A-12)。
关键词
大麦青干草
肉羊
屠宰性能
肉品质
氨基酸
脂肪酸
barley hay
mutton sheep
slaughter performance
meat quality
amino acids
fatty acids
