The effect of conditioning period on loin muscle tenderness in crossbred lambs with or without the Texel muscling QTL (TM-QTL).
The effect of conditioning period on loin muscle tenderness in crossbred lambs with or without the Texel muscling QTL (TM-QTL).
复制标题
调理期对带或不带特塞尔肌肉 QTL (TM-QTL) 的杂交羔羊腰部肌肉嫩度的影响。
DOI:
10.1016/j.meatsci.2010.03.029
复制
发表时间:
2010
期刊:
影响因子:
7.1
通讯作者:
Lambe NR
中科院分区:
文献类型:
--
作者:
Lambe NR
A Texel muscling quantitative trait locus (TM-QTL) has been identified on chromosome 18, which increases loin muscling, but may also have a negative impact on mechanically-measured loin tenderness in crossbred lambs, depending on conditioning time. This study investigated the influence of a range of conditioning times (3, 5, 7 or 9days) on the effect of TM-QTL on loin muscle tenderness. Using Texel rams heterozygous for TM-QTL, mated to non-carrier Mule ewes, heterozygous (n=45) and wild-type (n=50) crossbred lambs were produced. Weight of the valuable Longissimus lumborum muscle was higher in TM-QTL carriers than non-carriers, when compared at a fixed age (+11.5%; P=0.038), with the same trend at a fixed carcass weight (+10.2%; P=0.064). Toughness, measured by shear force, was significantly higher in samples from TM-QTL carriers than non-carriers, after conditioning for 3days (P=0.002), 5days (P=0.003) or 7days (P=0.03), but was not significantly different after 9days of conditioning (P=0.32). Compared to non-carrier lambs, the proportion of samples above consumer acceptability thresholds for toughness was greater in the TM-QTL carrier lambs after 3 and 5days of conditioning, similar at 7days, but lower at 9days. The results suggest that the negative effect of TM-QTL on loin tenderness in crossbred lambs can be overcome by conditioning for more than 7days. Marketing of TM-QTL carrier lambs through companies that use enhanced processing protocols could be beneficial, due to higher loin muscle weights, without negative effects on meat quality.
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DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
J. Vipond
通讯作者:
J. Vipond
影响因子:
3.3
作者:
S. Duckett;G. Snowder;N. Cockett
通讯作者:
N. Cockett
影响因子:
7.1
作者:
E. Dransfield;R. C. Jones;H. Macfie
通讯作者:
H. Macfie
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
H. Thoeni
通讯作者:
H. Thoeni
影响因子:
3.3
作者:
N. Cockett;S. Jackson;G. Snowder;T. Shay;S. Berghmans;J. Beever;C. Carpenter;M. Georges
通讯作者:
M. Georges