为研究林间不同类型草地对小尾寒羊的放牧效果,在板栗园林间建植紫花苜蓿(Medicago sativa)和鸭茅(Dactylis glomerata)人工混播草地,以板栗园林间天然草地为对照,选用16只3.5月龄小尾寒羊,分为2组(每组公母各4只),试验周期90 d,测定屠宰性能、肉品质和营养成分.结果显示:与林间天然草地放牧组相比,在屠宰性能方面,林间人工混播草地放牧组活体质量增加,胴体质量、净肉质量和眼肌面积分别显著增加11.06％、14.04％和28.24％;在肉品质方面,黄色度b1d+显著增加31.26％;在营养成分方面,粗脂肪、灰分和必需氨基酸含量分别显著增加27.37％、27.48％和14.23％,总氨基酸和鲜味氨基酸含量提高,总脂肪酸、饱和脂肪酸和n-3多不饱和脂肪酸含量分别显著增加25.73％、32.27％和19.05％,多不饱和脂肪酸和必需脂肪酸含量分别增加了8.56％和8.51％.可见,林间人工混播草地放牧小尾寒羊可提高其屠宰性能,改善其肉品质和营养成分.%In order to study the grazing effect of different types of grassland in the chestnut garden on slaughter performance,meat quality and nutrient composition of small tail han sheep,sixteen 3.5-monthold sheep were divided into two groups with eight sheep per group,one group was grazed in artificial mixed grassland withalfalfa (Medicago sativa) and orchard grass (Dactylis glomerata),and other group was grazed in natural grassland.The experiment lasted for 90 d.The results showed as follows:Compared with group of grazing in natural grassland,for slaughter performance,live weight was increased,carcass weight,net meat weight and eye muscle area were increased significantly by 11.06 ％,14.04 ％ and 28.24 ％ in group of grazing in artificial mixed grassland,respectively;For meat quality,b1*d was increased significantly by 31.26％ in group of grazing in artificial mixed grassland;For nutrient composition,crude fat,ash and essential amino acid contents were increased significantly by 27.37％,27.48％ and 14.23 ％ in group of grazing in artificial mixed grassland,respectively,total amino acid content and flavor amino acid contents were increased,total fatty acids,saturated fatty acid and n-3 polvunsaturated fattv acids were increased significantly by 25.73％,32.27％ and 19.05％,respectively,polyunsaturated fatty acids and essential fatty acid were increased by 8.56％ and 8.51％,respectively.In conclusion,grazing in artificial mixed grassland could increase slaughter performance,improve meat quality and nutrient composition of small tail han sheep.
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