Zobrazeno 1 - 10
of 17
pro vyhledávání: '"W. A. McKiernan"'
Publikováno v:
Animal, Vol 14, Iss, Pp s396-s405 (2020)
Until recently, beef carcass payment grids were predominantly based on weight and fatness categories with some adjustment for age, defined as number of adult teeth, to determine the price received by Australian beef producers for slaughter cattle. Wi
Autor:
W. A. Mckiernan, David G. Mayer, J. F. Wilkins, R. C. Dobos, Brad Walmsley, V. H. Oddy, Brian Kinghorn, M. J. McPhee
Publikováno v:
Computers and Electronics in Agriculture. 91:30-34
The real world contains many sources of natural variation. Useful simulation models of real-world problems, such as the optimal allocation of beef cattle into feedlot pens, need to take this into account. Monte Carlo simulation is the usual method of
Autor:
Stephen Barwick, F. M. Jones, K. J. Copping, J.M. Accioly, P. F. Parnell, Michael Laurence, Michelle L. Hebart, R. M. Herd, E. J. Speijers, M. P. B. Deland, Robert Banks, Wayne S. Pitchford, Kath Donoghue, G.D. Tudor, N. J. Edwards, Anne L. Barnes, S. J. Lee, W. A. McKiernan, J. F. Graham
Publikováno v:
Animal Production Science. 58:20
Australian seedstock cattle breeders have expressed concerns that while there has been genetic improvement in feedlot and abattoir performance of cows, it could have led to a decline in maternal productivity, especially under variable nutritional con
Publikováno v:
Animal, Vol 1, Iss 1, Pp 13-20 (2007)
Conformation scores can account for more than 20% of cattle price variation at Australian livestock sales. However, there are limited available references which define genetic factors relating objective live developmental traits to carcass compositio
Publikováno v:
Animal Production Science. 54:1412
This project studied the effect of selection for divergence in live muscle score (MS) in a herd of Angus cattle on feedlot performance, feed efficiency, carcass characteristics and carcass yield of two cohorts of steer progeny. Steers from lines sele
Publikováno v:
Animal Production Science. 49:525
The steer progeny of sires genetically diverse for fatness and meat yield were grown at different rates from weaning to feedlot entry and effects on growth, carcass and meat-quality traits were examined. The present paper, the second of a series, rep
Autor:
P. F. Parnell, B. A. O' Rourke, W. A. McKiernan, J. A. Dennis, P. F. Arthur, L. M. Cafe, D. Perry, P. J. Healy, Paul L. Greenwood, I. Marsh, K. H. Walker
Publikováno v:
Animal Production Science. 49:297
Two Australian beef cattle herds, in which selection for muscularity was a primary objective, were used in this study to identify bovine myostatin (MSTN) mutations associated with increased muscling, and to assess associations between genotype and pe
Publikováno v:
Animal Production Science. 49:515
The present experiment, ‘Regional Combinations’, examined growth, and carcass- and meat-quality traits in the progeny of sires genetically diverse for fatness and meat yield when grown at different rates from weaning to feedlot entry. The present
Publikováno v:
Animal Production Science. 49:1052
The steer progeny of sires genetically diverse for fatness and meat yield were grown at different rates from weaning to feedlot entry and effects on growth, carcass and meat-quality traits were examined. The present paper, the second of a series, rep
Autor:
W. A. McKiernan, G. D. Tudor, M P B Deland, B. L. McIntyre, Stephen Barwick, JF Graham, L Davies, J. F. Wilkins
Publikováno v:
Australian Journal of Experimental Agriculture. 45:959
As a component of the second term of the Cooperative Research Centre (CRC) for Cattle and Beef Quality, a project to further test and validate the effects of varying nutritional growth paths pre-finishing and slaughter on cattle of varying genetic po