Factors affecting the longissimus dorsi muscle depth and backfatt hickness measured by ultrasound technique in lambs
|Kateg. publikace||Příspěvky ve sbornících|
The study was conducted to estimate the effect of systematic factors on characteristics of meatiness and fattiness scaned by ultrasound in live lambs. Lambs were scanned at the age of 80-120 days by 5MHz linear probe behind the last rib vertebra after wool combing. According to Akaike criterion the statistical model with regression on lamb liveweight better fits the analysed data both for muscle depth and backfat thickness. After adjustment with the same liveweight the female lambs had significantly higher muscle depth and bacfat thickness compared to male lambs. This fact is probably caused by different body proportions of males and females. Rams have their body mass concentrated rather in the chest and rack area than in the scanned part of the body.
|Oddělení||Genetika a šlechtění hospodářských zvířat|
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