Heritability and Repeatability of Gestation Length in Beef Cattle
- 31 January 1958
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Animal Science
- Vol. 17 (1) , 249-253
- https://doi.org/10.2527/jas1958.171249x
Abstract
Heritability and repeatability of gestation length in beef cattle were studied. The data consisted of 608 gestation records of which 202 were for Aberdeen-Angus calves, 69 for Shorthorns, 275 for Herefords, 43 for Brahman-Hereford crossbreds, and 19 for calves sired by Brahman-Hereford bulls and out of Hereford cows. The respective breed averages were 279.5, 281.3, 284.9, 286.6, and 286.9 days. There were 27 sires and 283 dams represented. The overall average was 282.9 and the standard deviation was 6.7 days. Heritability estimates based on the maternal half-sib, full-sib, and paternal half-sib correlations were .22, .36, and .50, respectively. Repeatability of gestation length was .21 and .19 for maternal sibs and full sibs, respectively. Copyright © . .This publication has 1 reference indexed in Scilit:
- LENGTH OF THE GESTATION PERIOD IN BEEF CATTLEJournal of Heredity, 1952