GENETIC-ANALYSIS OF OSTEOCHONDROSIS AND LEG WEAKNESS IN THE SWEDISH PIG PROGENY TESTING SCHEME
GENETIC-ANALYSIS OF OSTEOCHONDROSIS AND LEG WEAKNESS IN THE SWEDISH PIG PROGENY TESTING SCHEME
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DOI：
10.1080/00015128709436552
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发表时间：
1987-01-01
期刊：
影响因子：
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通讯作者：
LUNDEHEIM, N
中科院分区：
文献类型：
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作者：
LUNDEHEIM, N
分析了瑞典猪后代检测方案中屠宰前腿部无力评分（1=最差，3=最好）和屠宰后肘关节和膝关节骨软骨病评分（0=最好，5=最差）的相关信息。数据包括从1981年11月至1984年9月开始试验的9886头猪（5568头长白猪和4318头约克郡猪）的信息。长白猪在两项骨软骨病评分和下肢无力方面均为劣势品种，去势为劣势性别。与手肘关节相比，膝关节骨软骨病的发病率和严重程度最高。只有严重的关节病变与下肢无力临床体征的发生率增加相关。与体质较好的猪相比，体质较差的猪在试验期的前半段生长较快，但在试验结束时生长较慢。下肢无力评分的遗传力为0.14 ± 0.01。0.03对于长白猪和0.11 ±。0.03为约克郡。骨软骨病肘关节评分的遗传力为0.21 ± 0.01。0.03和0.25 ±。0.04分别为长白猪和约克郡。膝关节评分的相应遗传力为0.33 ± 0.001。0.04和0.35 ±。0.05.体质和生长速度之间和体质和瘦肉率之间存在不利的遗传相关。
Information about leg weakness scored before slaugher (1=worst, 3=best) and osteochondrosis in elbow and knee joints scored after slaughter (0=best, 5=worst) in the Swedish pig progeny testing scheme were analysed. The data comprised information on 9886 pigs (5568 Landrace and 4318 Yorkshire) beginning test from November 1981 to September 1984. For the two osteochondrosis scores and leg weakness, Landrace was the inferior breed and castrates the inferior sex. The incidence and severity of osteochondrosis was highest in the knee joint, compared with the elbow joint. Only severe joint lesions were correlated with increased incidence of clinical signs of leg weakness. Pigs with inferior constitution grew faster during the first part of the test period, but slower at the end of test compared with constitutionally better pigs. Heritabilities of leg weakness score were 0.14 .+-. 0.03 for Landrace and 0.11 .+-. 0.03 for Yorkshire. Heritabilities for elbow joint scores for osteochondrosis were 0.21 .+-. 0.03 and 0.25 .+-. 0.04 for Landrace and Yorkshire, respectively. Corresponding heritabilities for knee joint scores were 0.33 .+-. 0.04 and 0.35 .+-. 0.05. Indications of unfavourable genetic correlations between constitution and growth rate and between constitution and lean percentage were found.