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Developing a genome-wide selection model for genetic improvement of residual feed intake and carcass merit in a beef cattle breeding program
Download2012
Lai, S., Plastow, G., Zeng, Z., Li, X., Ma, J., Tang, G., Moore, S., Wang, Z.
Residual feed intake (RFI) and carcass merit (CM) are both complex traits emerging as critical targets for beef genetic improvement. RFI and CM traits are difficult and expensive to measure and genetic improvement for these traits through traditional selection methods is not very effective....
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Development of carcass cuts, organs, body tissue and chemical body composition during growth of pigs
Download2006
Landgraf, S., Roehe, R., Plastow, G. S., Kalm, E., Looft, H., Susenbeth, A., Knap, P. W.
A serial slaughter trial was carried out to examine the developmental change of physical and chemical body composition in pigs highly selected for lean content. A total of 48 pigs (17 females and 31 castrated males) were serially slaughtered and chemically analysed. Eight pigs were slaughtered at...
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Effect of postweaning implantation of zeranol and dietary energy level on growth and reproductive performance of replacement beef heifers
Download1991
Makarechian, M., Arthur, P. F., Price, M. A.
Eighty-one heifer calves weaned at an average age of 6 mo were used to study the effect of postweaning zeranol implantation, on the growth and reproductive performance of heifers fed to grow slowly on three dietary energy levels. Forty heifers were implanted with 36 mg of zeranol at 30 d and...
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1978
Price, M. A., Berg, R. T., Jones, S. D. M.
The relative growth and distribution of bone from 256 bovine carcasses were compared among three breed-types (British, up to 30% Charolais and 30-50% Charolais) and three \"sexes\" (heifers, steers and bulls) over a wide range in carcass weight.
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1979
Price, M. A., Richmond, R. J., Berg, R. T., Jones, S. D. M.
The growth and distribution of bone from 179 pig carcasses were compared among five breeds (Duroc x Yorkshire (DxY), Hampshire x Yorkshire (HxY), Yorkshire (YxY), Yorkshire x Lacombe-Yorkshire ffxl--Y) and Lacombe x Yorkshire (LxY)) and two sex-types (barrows and gilts) over a wide range in...
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Effects of breed type and slaughter weight on feedlot performance and carcass composition in bulls
Download1978
Jones, S. D. M., Price, M. A., Berg, R. T.
A trial is reported comparing the growth and carcass characteristics ofbulls of three breed-types: Hereford crossbred (HC), beef synthetic (SY) and dairy crossbred (DC).
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Estimation of genetic and phenotypic parameters for ultrasound and carcass merit traits in crossbred beef cattle
Download2014
Bruce, H. L., Plastow, G. S., Moore, S. S., Wang, Z., Nkrumah, D., Miar, Y., Durunna, O.
Ultrasound measurements of 852 crossbred steers along with carcass merit measurements on 756 of them were used to examine their genetic and phenotypic parameters. Traits including ultrasound backfat thickness (UBF), ultrasound ribeye area (UREA), ultrasound marbling (UMAR), carcass weight (CWT),...
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1980
Jones, S. D. M., Berg, R. T., Price, M. A.
A trial is reported comparing half-carcass fat partitioning in 12 bulls and 12 heifers each of two breed-types: Hereford (HE) and Dairy Synthetic (DY). These animals were serially slaughtered from weaning (163 ± 15.1 (SE) days) to approximately 16 mo of age. After slaughter, one side of each...
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1993
Jones, S. D. M., Newman, J. A., Vincent, B. C., Price, M. A.
A total of 120 crossbred heifers (initial weight = 270 ± 3 kg) were used in a project to evaluate a once-calved-heifer system of beef production. They were reared on a cereal silage–grain diet and, beginning at an average age of 385 d, exposed during a 6-wk breeding period to bulls of breeds...
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1978
Price, M. A., Berg, R. T., Jones, S. D. M.
Carcass composition and growth patterns for muscle and bone were compared among three breed-types (Hereford crossbred, (HC), beef synthetic (SY) and dairy crossbred (DC)).