2岁龄滩湖杂G0代与滩羊产肉性能、肉品质及风味物质的比较研究OACSTPCD

This experiment was to determine the differences in meat production performance,meat quality and flavor profile between 2-year-old G0 generation Tan-Hu hybrid sheep and 2-year-old Tan sheep.Three G0 generation Tan-Hu hybrid sheep and Tan sheep,of 2 years of age,healthy and of similar weight,were selected and slaughtered;and then their meat production performance,meat quality,and meat pro-files were determined by electronic nose.The results were as follows:There was no significant difference in the characteristics of slaughtered performance between the two groups of sheep(P＞0.05);but the indexes of carcass weight,slaughtering rate,net meat percentage,GR val-ue and back fat thickness of the G0 generation Tab-Hu hybrid sheep were higher than those of the Tan sheep,with lower tail weight(4.88%)and significantly lower head weight(P＜0.05),larger skin area of the former than those of the latter(P＜0.05).In terms of the edible quality of meat,there was no significant difference in the meat amino acid and fatty acid contents between the two groups(P＞0.05),but the cut force value of the G0 generation Tan-Hu hybrid sheep was 7.95% lower and the water loss rate was 10.55% lower.Meat flavor substances,using electronic nose cannot completely distinguish G0 generation from Tan sheep meat quality.The substances that play a volatile role in meat quality are nitroxide compounds,alkanes and aromatic components,which can't be completely distinguished between the G0 gen-eration Tan-Hu hybrid sheep and the tan sheep.In general,the slaughtering performance of 2-year-old G0 generation Tan-Hu hybrid sheep was superior to that of 2-year-old Tan sheep,with better quality of meat for consumption,but no significant difference in meat flavor.