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Animal Science Database

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Abstract

Heterosis effects were evaluated as traits of the dam in F2 progeny of F1 dams and F3 and F4 progeny of F2 and F3 dams in 3 composite breed types. Breed effects were evaluated for the 9 parental breeds (Red Poll, Hereford, American Angus, Limousin, Brown Mountain, Pinzgauer, Gelbvieh, Simmental and ...

Author(s)
Gregory, K. E.; Cundiff, L. V.; Koch, R. M.
Citation
Journal of Animal Science, 1991, 69, 9, pp 3574-3589
Abstract

Data are tabulated on calving difficulty, birth weight, 200-day weight and survival to weaning of calves born to Hereford × Aberdeen-Angus reciprocal crossbred dams inseminated with Charolais, Gelbvieh [German Yellow], Pinzgau, Shorthorn, Galloway, Texas Longhorn (TL), Nellore [Ongole], Piedmont...

Author(s)
Cundiff, L. V.; Koch, R. M.; Gregory, K. E.
Citation
Beef Research Progress Report, Roman L. Hruska US Meat Animal Research Center, 1988, No. 3, pp 3-4
Abstract

Crossbred calves, from ♀♀ (≥3-yr-old) progeny of Brown Swiss (BS), Red Poll (RP), Hereford and Aberdeen-Angus (AA) maternal grandsires and maternal granddams in a diallel crossbreeding experiment, were evaluated to estimate breed mean maternal heterosis (h¯smallcap˜Mi) for each breed, maternal...

Author(s)
Dearborn, D. D.; Gregory, K. E.; Cundiff, L. V.; Koch, R. M.
Citation
Journal of Animal Science, 1987, 65, 1, pp 33-41
Abstract

In the work reviewed, survival to weaning averaged 91% for beef cattle, 80% for dairy cattle, 84% for sheep and 75% for pigs. Diallel crossing experiments in cattle, sheep and pigs showed significant additive genetic differences among breeds for direct and maternal effects on survival. Variation...

Author(s)
Cundiff, L. V.; Gregory, K. E.; Koch, R. M.
Publisher
Editorial Garsi, Madrid, Spain
Citation
2nd World Congress on Genetics applied to Livestock Production, 4th-8th October 1982. 5. Plenary sessions, 1982, pp 310-337
Abstract

This discussion includes a review of results from a long-term research programme at the US Meat Animal Research Center designed to evaluate a wide range of biological types of cattle, represented by breeds that differ widely in characteristics such as milk production, growth rate, carcass...

Author(s)
Gregory, K. E.; Cundiff, L. V.; Koch, R. M.
Publisher
Editorial Garsi, Madrid, Spain
Citation
2nd World Congress on Genetics applied to Livestock Production, 4th-8th October 1982. 5. Plenary sessions., 1982, pp 482-503
Abstract

Effects of heterosis on milk production and maternal heterosis on preweaning growth traits and conformation score were evaluated in reciprocal crossbred and purebred Hereford, Aberdeen-Angus (AA) and Shorthorn cows. Maternal heterosis was estimated from the difference between progeny of crossbred...

Author(s)
Cundiff, L. V.; Gregory, K. E.; Schwulst, F. J.; Koch, R. M.
Citation
Journal of Animal Science, 1974, 38, 4, pp 728-745