12月龄藏山羊屠宰性能、肌肉品质及肌肉营养成分研究

旨在了解分布于四川的藏山羊的种质特性，试验选择12月龄的藏山羊公、母羊各3只进行屠宰，测定其屠宰性能、肌肉品质及肌肉营养成分等。结果表明，①公、母羊的宰前体重分别为（14.33±1.53）和（12.50±2.18）kg，屠宰率分别为（42.11±5.26）%和（43.85±4.51）%，净肉率分别为（31.34±3.36）%和（32.84±3.16）%，胴体产肉率分别为（72.34±0.54）%和（72.30±0.78）%；②胴体体尺、胴体分割、肌纤维特性、肌肉品质、肌肉营养成分、肌肉矿物质含量及其重金属含量等指标在公、母羊间的差异较小；③公、母羊肌肉中共检测到18种氨基酸， EAA/TAA 分别为（39.18±0.38）%和（38.70±0.72）%，EAA/NEAA分别为（64.31±1.03）%和（63.21±1.92）%。

Slaughter Performance,Muscle Quality and Muscle Nutrients of Twelve-month-old Tibetan Goat

This study aimed to study the germplasm characteristics of Tibetan goat distributed in Sichuan. Three male and three female goats of twelve-month-old Ti-betan goat were selected, and they were slaughtered for analysis of slaughter per-formance, muscle quality and muscle nutrients. The results showed that the pre-slaughter body weights, dressing percentages, meat percentages and carcass meat production rates of male and female Tibetan goats were (14.33±1.53) and (12.50± 2.18) kg, (42.11±5.26)% and (43.85±4.51)%, (31.34±3.36)% and (32.84±3.16)%, and (72.34±0.54)% and (72.30±0.78)%, respectively. There were smal differences in car-cass size, carcass segmentation, muscle fiber properties, muscle quality, muscle nu-tritional composition, muscle minerals contents and muscle heavy metals contents between male and female Tibetan goats. A total of 18 kinds of amino acids were detected in the muscle of male and female Tibetan goats. The EAA/TAA ratios and EAA/NEAA ratios of male and female Tibetan goats were (39.18±0.38)%and (38.70± 0.72)%, and (64.31±1.03)% and (63.21±1.92)%, respectively.