Glaze J B, Vogt D W, Lipsey R J, Ellersieck M R
Department of Animal Sciences (Vogt and Lipsey), University of Missouri, Columbia, MO 65211, USA.
Theriogenology. 1994;41(4):943-50. doi: 10.1016/0093-691x(94)90509-h.
Data on 1210 spring-born (1983 to 1988) yearling heifers were analyzed by paternal half-sib procedures to obtain genetic and phenotypic parameter estimates involving birth weight and pelvic measurements. Data included records on 629 Angus, 325 Simmental, and 256 Salers representing 93, 49, and 22 paternal half-sib sire groups, respectively. Heritabilities for birth weight (BW), pelvic height (PH), pelvic width (PW), and pelvic area (PA) for Angus were 0.30, 0.61, 0.28, and 0.43, respectively. Corresponding values for Simmental and Salers heifers were 0.14, 0.34, 0.44, 0.37, and 0.18, 0.02, 0.29, 0.15, respectively. Genetic correlations among pelvic measurements (PH-PW, PH-PA, PW-PA) were positive (0.25 to 1.03) except for the estimate of -0.07 for PH-PW in Simmentals. Genetic correlations between BW and the 3 pelvic measurements (BW-PH, BW-PW, BW-PA) were negative (-0.18 to -0.36) except for the estimates of 0.53 (BW-PW) and 0.26 (BW-PA) in Simmentals and 2.84 (BW-PH) and 0.39 (BW-PA) in Salers. Phenotypic correlations among pelvic measurements ranged from 0.16 to 0.80. Phenotypic correlations between birth weight and the 3 pelvic measurements were consistently lower (-0.02 to 0.09) than the genetic correlations.
对1210头春季出生（1983年至1988年）的一岁小母牛的数据，采用父系半同胞程序进行分析，以获得涉及出生体重和骨盆测量的遗传和表型参数估计值。数据包括629头安格斯牛、325头西门塔尔牛和256头萨勒斯牛的记录，分别代表93个、49个和22个父系半同胞父本群体。安格斯牛出生体重（BW）、骨盆高度（PH）、骨盆宽度（PW）和骨盆面积（PA）的遗传力分别为0.30、0.61、0.28和0.43。西门塔尔牛和萨勒斯牛小母牛的相应值分别为0.14、0.34、0.44、0.37和0.18、0.02、0.29、0.15。骨盆测量值（PH-PW、PH-PA、PW-PA）之间的遗传相关性为正（0.25至1.03），西门塔尔牛中PH-PW的估计值为-0.07除外。出生体重与3个骨盆测量值（BW-PH、BW-PW、BW-PA）之间的遗传相关性为负（-0.18至-0.36），西门塔尔牛中BW-PW的估计值为0.53和BW-PA的估计值为0.26除外，萨勒斯牛中BW-PH的估计值为2.84和BW-PA的估计值为0.39除外。骨盆测量值之间的表型相关性在0.16至0.80之间。出生体重与3个骨盆测量值之间的表型相关性始终低于遗传相关性（-0.02至0.09）。
