摘要
应用B超仪对 3个猪种共 2 0头猪的背膘厚、眼肌面积进行了活体测定 ,分析其测定结果与A超活体、屠宰后胴体及胴体瘦肉率的关系 ,探讨B超在猪育种中的应用价值。结果表明 :同一性状B超活体测定值与A超活体、胴体之间的相关性极显著 (p <0 .0 1) ;B超活体测定猪背膘厚与胴体瘦肉率为负相关 ,B超活体测定眼肌面积与胴体瘦肉率为正相关 ,皆达极显著水平 (p <0 .0 1) ,并建立了胴体瘦肉率对B超活体测定背膘厚和眼肌面积的二元线性回归方程。
living pigs from 4 breeds were scanned to measure their backfat thickness and loin eye muscle area by B-mode ultrasound machine. These measurements were compared with living measurements by A-mode ultrasound machine and measurements of carcasses after slaughtered.20 carcasses had a full cutout to determine the real lean percentage.Results showed that the correlations between with the living measurement and measurements in the other two methods at the same trait were significant (p<0.01). There were a negative correlation between backfat thickness with B-mode ultrasound machine and carcass lean percentage and a positive correlation between loin eye muscle area with B-mode ultrasound machine and carcass lean percentage, and the correlations were significant (p<0.01).A duality linear regression equation was developed to predict carcass lean percentage from live measurements with B-mode ultrasound.
出处
《安徽农业科学》
CAS
北大核心
2005年第3期451-452,495,共3页
Journal of Anhui Agricultural Sciences
基金
国家"8 63"计划项目"太湖猪 /淮猪等优质瘦肉型猪新品系和配套系选育技术研究"(NO :2 0 0 2AA2 4 2 0 31 )资助。
关键词
B超活体测定
猪
背膘厚
眼肌面积
瘦肉率
Living measurement with B-mode ultrasound
Pig
Backfat thickness
Loin eye muscle area
Lean percentage
