摘要
试验旨在研究不同营养调控剂对冷季放牧绵羊肉品质的影响。采用单因素完全随机区组试验设计,将48只健康、体重相近(28.01±1.70)kg的7月龄放牧母羊随机分为4组,分别为Ⅰ组:不补饲;Ⅱ组:补饲常规精料;Ⅲ组:补饲常规精料+复合配方1组(0.30%苹果酸、0.06%半胱胺、0.08%糖萜素);Ⅳ组:补饲常规精料+复合配方2组(0.60%苹果酸、0.12%半胱胺、0.16%糖萜素)。其中每组3个重复,每个重复4只,试验期45d,试验期末测定采集各组母羊背最长肌肌肉样品,测定肉质养分、氨基酸的含量。结果显示:1试验Ⅲ组的粗脂肪含量比Ⅰ、Ⅱ和Ⅳ组分别提高27.92%(P<0.05)、16.67%(P>0.05)和7.85%(P>0.05);试验Ⅲ组的粗蛋白质含量比Ⅰ、Ⅱ和Ⅳ组分别提高7.35%(P<0.05)、3.94%(P>0.05)和2.49%(P>0.05);补饲组的剪切力均极显著低于未补饲组(P<0.01),试验Ⅲ组较Ⅱ组降低3.98%(P<0.05)。2试验Ⅳ组的脯氨酸含量较Ⅰ和Ⅱ组分别提高38.34%(P<0.01)和22.75%(P<0.05),试验Ⅲ组的脯氨酸含量较Ⅰ和Ⅱ组分别提高19.63%(P>0.05)和6.15%(P>0.05);其余氨基酸含量在各组之间均差异不显著(P>0.05)。综上,补饲复合营养调控剂可改善绵羊肉质剪切力,提高绵羊肌内粗脂肪、粗蛋白质和氨基酸含量,改善嫩度风味和营养价值。考虑综合因素,试验Ⅲ组补饲效果最为显著,补饲复合配方1组对改善冷季放牧绵羊肉品质有实际指导意义。
The experiment was conducted to investigate the effects of complex nutritional regulation additives on meat quality of grazing sheep in cold season.A single factor random block design was used,48 grazing ewes with 7months old and the average body weight（28.01±1.70）kg were randomly divided into 4groups：Group Ⅰ without supplement;Group Ⅱ with routine concentrate;Group Ⅲ with routine concentrate＋complex formulation group 1（0.30% malic acid,0.06% cysteamine,0.08% saccharicterpenin）;Group Ⅳ with routine concentrate＋complex formulation group 2（0.60% malic acid,0.12% cysteamine,0.16% saccharicterpenin）.And there were 3repeats for each group with 4grazing ewes in each repeat.At the end of experiment,the longissimus dorsi of ewes were collected to determine the content of meat nutrient and amino acids.The results showed that：1 The crude fat content of groupⅢ was higher than groupⅠ,ⅡandⅣ by 27.92%（P〈0.05）,16.67%（P〉0.05）and 7.85%（P〉0.05）,respectively.The crude protein content of group Ⅲ was higher than groupⅠ,Ⅱ and Ⅳ by 7.35%（P〈0.05）,3.94%（P〉0.05）and 2.49%（P〉0.05）,respectively.The shear force in three supplementary feeding groups were extremely significantly lower than that in the control group（P〈0.01）andcompared with group Ⅱ,group Ⅲ was decreased by 3.98%（P〈0.05）.2 Compared with groupⅠ and Ⅱ,the proline content of group Ⅳ was increased by 38.34%（P〈0.01）and 22.75%（P〈0.05）,respectively.While the proline content of groupⅢ was higher than groupⅠandⅡ by19.63%（P〉0.05）and 6.15%（P〉0.05）,respectively.Except for proline,other amino acids were not significant different among the four experimental groups（P〉0.05）.In conclusion,in this trial,supplementing complex nutritional regulation additives had good effects on crude fat,crude protein and shear force and amino acids contents,also improved the flavor and nutritional value of grazing sheep in cold season.Taking into consideration various factors,the effect of groupⅢ（supplementing routine concentrate＋complex formulation group 1）was the most obvious,which had the practical guiding importance in improving the meat quality of grazing sheep in cold season.
出处
《中国畜牧兽医》
CAS
北大核心
2016年第6期1494-1499,共6页
China Animal Husbandry & Veterinary Medicine
基金
农业部公益性行业(农业)科研专项经费项目(201303062)
关键词
放牧绵羊
复合营养调控剂
肉品质
grazing sheep
complex nutritional regulation additives
meat quality
