Search Results - "MacNeil, M. D"

Relationship between size of the ovulatory follicle and pregnancy success in beef heifers by Perry, G.A, Smith, M.F, Roberts, A.J, MacNeil, M.D, Geary, T.W

“…Previous research indicated that the size of the ovulatory follicle at the time of insemination significantly influenced pregnancy rates and embryonic/fetal…”
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Pregnancy establishment and maintenance in cattle by Atkins, J. A, Smith, M. F, MacNeil, M. D, Jinks, E. M, Abreu, F. M, Alexander, L. J, Geary, T. W

“…A single ovulation, reciprocal embryo transfer study was used to investigate effects of oocyte competence and maternal environment on pregnancy establishment…”
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Reproductive performance of heifers offered ad libitum or restricted access to feed for a one hundred forty-day period after weaning by Roberts, A.J, Geary, T.W, Grings, E.E, Waterman, R.C, MacNeil, M.D

“…Reproductive performance was evaluated in composite heifers born over a 3-yr period that were randomly assigned to control (fed to appetite; n = 205) or…”
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prototype national cattle evaluation for feed intake and efficiency of Angus cattle by MacNeil, M.D, Lopez-Villalobos, N, Northcutt, S.L

“…Recent improvement in technologies for measuring individual feed intake has made possible the collection of data suitable for breed-wide genetic evaluation…”
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Genetic evaluation of Angus cattle for carcass marbling using ultrasound and genomic indicators by MacNeil, M.D, Nkrumah, J.D, Woodward, B.W, Northcutt, S.L

“…The objectives were to estimate genetic parameters needed to elucidate the relationships of a molecular breeding value (MBV) for marbling, intramuscular fat…”
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prototype national cattle evaluation for sustained reproductive success in Hereford cattle by MacNeil, M.D, Vukasinovic, N

“…The objective of this research was to develop a prototype system for national cattle evaluation that would facilitate selection for improved fertility of…”
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Invited Review: Research contributions from seventy-five years of breeding Line 1 Hereford cattle at Miles City, Montana by MacNeil, M.D

“…For 75 yr, Line 1 Hereford cattle have been at the forefront of beef cattle breeding research. The goal of this review is to provide an overview of scientific…”
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National cattle evaluation system for combined analysis of carcass characteristics and indicator traits recorded by using ultrasound in Angus cattle by MacNeil, M.D, Northcutt, S.L

“…The objectives were to 1) evaluate genetic relationships of sex-specific indicators of carcass merit obtained by using ultrasound with carcass traits of…”
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Genome-wide scans for QTL affecting carcass traits in Hereford x composite double backcross populations by MacNeil, M. D, Grosz, M. D

“…A genome-wide scan for chromosomal regions influencing carcass traits was conducted spanning 2.413 morgans on 29 bovine autosomes using 229 microsatellite…”
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Genetic parameter estimates for scrotal circumference and semen characteristics of Line 1 Hereford bulls by Kealey, C. G, MacNeil, M. D, Tess, M. W, Geary, T. W, Bellows, R. A

“…The objectives of this study were to estimate heritability for scrotal circumference (SC) and semen traits and their genetic correlations (r[subscript g]) with…”
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Effects of flunixin meglumine on pregnancy establishment in beef cattle by Geary, T.W, Ansotegui, R.P, MacNeil, M.D, Roberts, A.J, Waterman, R.C

“…The objective of this research was to determine effects of a single injection of the PG synthesis inhibitor flunixin meglumine (FM; 1.1 mg/kg of BW,…”
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Leptin as a predictor of carcass composition in beef cattle by Geary, T. W, McFadin, E. L, MacNeil, M. D, Grings, E. E, Short, R. E, Funston, R. N, Keisler, D. H

“…Our objective was to determine if serum concentrations of leptin could be used to predict carcass composition and merit in feedlot finished cattle. Two…”
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Genetic analysis of gain from birth to weaning, milk production, and udder conformation in Line 1 Hereford cattle by MacNeil, M.D, Mott, T.B

“…The objective of this research was to partition phenotypic variation in calf gain from birth to weaning, and milk production measured, by the…”
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Effects of restricted feeding of beef heifers during the postweaning period on growth, efficiency, and ultrasound carcass characteristics by Roberts, A.J, Paisley, S.I, Geary, T.W, Grings, E.E, Waterman, R.C, MacNeil, M.D

“…Traits used for identification of replacement beef heifers and feeding levels provided during postweaning development may have major financial implications due…”
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Genetic evaluation of the ratio of calf weaning weight to cow weight by MacNeil, M. D

“…The phenotypic ratio of a calf's weaning weight to its dam's weight is thought to be an indicator of efficiency of the cow. Thus, the objectives of this…”
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Potential emigration of Siberian cattle germplasm on Chirikof Island, Alaska by MACNEIL, M. D., ALEXANDER, L. J., KANTANEN, J., AMMOSOV, I. A., IVANOVA, Z. I., POPOV, R. G., OZEROV, M., MILLBROOKE, A., CRONIN, M. A.

“…Feral cattle residing in Chirikof Island, Alaska, are relatively distinct from breeds used in commercial production in North America. However, preliminary…”
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Genetic evaluation of an index of birth weight and yearling weight to improve efficiency of beef production by MacNeil, M.D

“…The CGC population is a stabilized composite of 1/2 Red Angus, 1/4 Charolais, and 1/4 Tarentaise germplasm. The objectives of this research were to estimate…”
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Influence of seasonal forage quality on glucose kinetics of young beef cows by Waterman, R.C, Grings, E.E, Geary, T.W, Roberts, A.J, Alexander, L.J, MacNeil, M.D

“…Extensive range livestock production systems in the western United States rely heavily on rangeland forages to meet the nutritional needs of grazing livestock…”
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Effects of reduced in utero and post-weaning nutrition on milk yield and composition in primiparous beef cows by Waterman, R. C., Geary, T. W., Petersen, M. K., MacNeil, M. D.

“…Development and long-term retention of replacement beef females in a semi-arid environment are of a major concern for extensive livestock producers…”
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Effects of flunixin meglumine and transportation on establishment of pregnancy in beef cows by Merrill, M.L, Ansotegui, R.P, Burns, P.D, MacNeil, M.D, Geary, T.W

“…Objectives of these studies were to determine the effects of flunixin meglumine (FM) administration on early embryonic mortality and circulating PG and…”
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