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Abstract
Thirteen body measurements per cow were collected from 1980 to 1981 on 3,193 Canadian Holstein-Friesian cows by 576 sires in 100 herds. These data were analyzed to test effects of herd, age of cow, stage of lactation, and generation group; to predict sire proofs; to estimate heritabilities and genetic and phenotypic correlations among body measures; and to estimate correlations between sire proofs for body measures and sire (maternal grandsire of calf) proofs for calving ease. Herd and age of cow were important sources of variation for all external body measures. Stage of lactation was an important source of variation for heart girth, and for slopes from hip to pin and from thurl to pin. Effects of generation group were not significant for any body measures. Heritabilities were moderate to high (.21 to .45). Genetic correlations among all height characteristics were large and positive (.68 to .99). Daughters that were large with wide pins, long sloping rumps, and little slope from thurl to pin bone seemed to be favored for easy calving.
References
- Some causes of neonatal and postnatal calf losses.J. Anim. Sci. 1967; 26 (Abstr.): 941
- Genetic relations between body measurements at three ages of Holsteins.J. Dairy Sci. 1958; 41: 1045
- Precalving body size and pelvic area relationships in Hereford heifers.J. Anim. Sci. 1971; 33: 455
- Cause and effect relationships associated with calving difficulty and calf birth weight.J. Anim. Sci. 1971; 33: 407
- Estimates of genetic and phenotypic parameters associated with pelvic area in Simmental cattle.J. Anim. Sci. 1982; 54: 258
- Dystocia and related calving traits in dairy cattle.Master's thesis, Cornell Univ., Ithaca, NY1977
- Evaluating Holstein bulls for maternal and direct genetic effect of dystocia.in: Abstr. Annu. Mtg. Am. Can. Soc. Anim. Sci., Guelph, Ont1982
- Genetic aspects of beef production among Holstein-Friesians pedigree selected for milk production.J. Anim. Sci. 1976; 37: 676
- Factors affecting pelvic size and dystocia in beef cattle.J. Anim. Sci. 1974; 38: 496
- Factors affecting dystocia and the effect of dystocia on subsequent reproduction in beef cattle.J. Anim. Sci. 1973; 36: 695
- Sire comparisons for Holsteins in Mexico versus the United States and Canada.J. Dairy Sci. 1976; 59: 298
- Relationships between pelvic dimensions, between pelvic dimensions and hip height and estimates of heritabilities.J. Anim. Sci. 1978; 47: 1089
- Recovery of interblock information when block sizes are unequal.Biometrika. 1971; 58: 545
- Studies in calving difficulty, stillbirth and associated factors in Swedish cattle breeds. I. General introduction and breed averages.Acta Agric. Scand. 1976; 26: 151
- Studies in calving difficulty, stillbirth and associated factors in Swedish cattle breeds. IV. Relationship between calving performance, precalving body measurements and size of pelvic opening in Friesian heifers.Acta Agric. Scand. 1976; 26: 221
- Dystocia in cattle: a review and implications.Theriogenology. 1978; 9: 195
- Evaluation of Holstein-Friesian dairy sires for conformation of their daughters.Can. J. Anim. Sci. 1978; 58: 409
- The anatomy of domestic animals.4th ed. W. B. Saunders, Philadelphia, PA1953
- Body measurements and calving difficulty.J. Anim. Sci. 1971; 33 (Abstr.): 1164
- Fertility in beef cows bred to produce straightbred or crossbred calves.J. Anim. Sci. 1967; 26: 1005
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Publication history
Received:
October 31,
1983
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© 1984 American Dairy Science Association. Published by Elsevier Inc.
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