Maternal body composition in seedstock herds. 2. Relationships between cow body composition and BREEDPLAN EBVs for Angus and Hereford cows

作者: S. J. Lee , K. A. Donoghue , W. S. Pitchford

DOI: 10.1071/AN13533

关键词:

摘要: Relationships between BREEDPLAN estimated breeding values (EBVs) for 600-day weight, maternal effect on calf weaning weight (Milk), fat depth at P8 site (Rump), 12/13th rib (Rib), eye muscle area (EMA), and intramuscular (IMF) with body composition measures in first- second-parity Angus Hereford cows were investigated. More than 4000 1000 measured height, ultrasound (P8), (RIB), loin EMA IMF (%) pre-calving weaning. The measurements then regressed against mid-parent EBVs. Increased EBV was associated increased height but decreased depths when considered a weight-constant basis. EBVs Rump, Rib, closely related to the equivalent measure first two parities. These results indicate that current carcass are cow composition, so if producers want change of their cows, they can do using existing EBVs, there appears no requirement additional describe body-composition traits subcutaneous fat, IMF.

参考文章(35)
R D Bergen, J J McKinnon, D A Christensen, N Kohle, A Belanger, Use of real-time ultrasound to evaluate live animal carcass traits in young performance-tested beef bulls Journal of Animal Science. ,vol. 75, pp. 2300- 2307 ,(1997) , 10.2527/1997.7592300X
W. S. Pitchford, J. M. Accioly, R. G. Banks, A. L. Barnes, S. A. Barwick, K. J. Copping, M. P. B. Deland, K. A. Donoghue, N. Edwards, M. L. Hebart, R. M. Herd, F. M. Jones, M. Laurence, S. J. Lee, W. A. McKiernan, P. F. Parnell, E. J. Speijers, G. D. Tudor, J. F. Graham, Genesis, design and methods of the Beef CRC Maternal Productivity Project Animal Production Science. ,vol. 58, pp. 20- 32 ,(2018) , 10.1071/AN13054
D. H. Crews, E. J. Pollak, R. L. Quaas, Evaluation of Simmental carcass EPD estimated using live and carcass data. Journal of Animal Science. ,vol. 82, pp. 661- 667 ,(2004) , 10.2527/2004.823661X
A Reverter, D J Johnston, H U Graser, M L Wolcott, W H Upton, Genetic analyses of live-animal ultrasound and abattoir carcass traits in Australian Angus and Hereford cattle. Journal of Animal Science. ,vol. 78, pp. 1786- 1795 ,(2000) , 10.2527/2000.7871786X
D. J. Johnston, A. Reverter, H. M. Burrow, V. H. Oddy, D. L. Robinson, Genetic and phenotypic characterisation of animal, carcass, and meat quality traits from temperate and tropically adapted beef breeds. 1. Animal measures Crop & Pasture Science. ,vol. 54, pp. 107- 118 ,(2003) , 10.1071/AR02085
N. Broring, J. W. Wilton, P. E. Colucci, Body condition score and its relationship to ultrasound backfat measurements in beef cows Canadian Journal of Animal Science. ,vol. 83, pp. 593- 596 ,(2003) , 10.4141/A01-002
A. Hassen, D. E. Wilson, R. L. Willham, G. H. Rouse, A. H. Trenkle, Evaluation of ultrasound measurements of fat thickness and longissimus muscle area in feedlot cattle: Assessment of accuracy and repeatability Canadian Journal of Animal Science. ,vol. 78, pp. 277- 285 ,(1998) , 10.4141/A97-102