Zobrazeno 1 - 10
of 102
pro vyhledávání: '"G. C. Emmans"'
Autor:
G C, Emmans
Publikováno v:
British Poultry Science. 63:701-719
1. It has been hypothesised that, for post-hatching domestic birds reared under good conditions, the relative growth rate R = (dW/dt)/W = dlnW/dt is a linear function of lnW; W is body weight. It followed that dW/dt = B.W. ln(A/W), where A is mature
Autor:
L. Bunger, R. M. Lewis, Geoff Simm, Rainer Roehe, G. C. Emmans, G. C. Márquez, W. Haresign, M. H. Davies
Publikováno v:
Journal of Animal Science. 90:142-151
The use of terminal sires (TS) for crossbreeding is integral to the UK sheep industry where approximately 71% of market lambs are sired by TS rams. Early growth of these crossbred lambs affects profitability. The objectives of this study were i) to e
Autor:
G. C. Emmans, Ronald M. Lewis
Publikováno v:
Journal of Animal Science. 88:467-480
The hypotheses tested were that genetic size-scaling for mature BW (A, kg) would reduce variation in intake between kinds of sheep and that quadratic polynomials on u = BW/A with zero intercept would provide good descriptions of the relationship betw
Publikováno v:
Journal of Animal Science. 87:107-118
The utility of x-ray computed tomography (CT) scanning in predicting carcass tissue distribution and fat partitioning in vivo in terminal sire sheep was examined using data from 160 lambs representing combinations of 3 breeds (Charollais, Suffolk, an
Publikováno v:
Animal, Vol 1, Iss 1, Pp 67-86 (2007)
Predictive frameworks for performance under both physical and social stressors are available, but no general framework yet exists for predicting the performance of animals exposed to pathogens. The aim of this paper was to identify the key problems t
Publikováno v:
Journal of Animal Science. 84:1778-1789
In a 1-yr experiment, nutritional treatments were used to produce different combinations of BW and BCS in lambs. The experiment served to quantify the effects of BW and BCS on ADFI by sheep. Ewe lambs (n = 78) were assigned to treatment groups that h
Publikováno v:
Animal Science. 82:289-300
The best means to utilize X-ray computed tomography (CT) and ultrasound to predict carcass lean, fat and bone weights in vivo in terminal sire sheep were tested. Data on 160 lambs from three breeds were considered: 50 Suffolk males, 50 Suffolk female
Publikováno v:
Journal of Animal Science. 84:1552-1566
A general model is proposed for predicting the effects of subclinical pathogen challenges of different doses and virulence on the relative feed intake (RFI) of animals. The RFI is defined as the feed intake (FI, kg/d) of the animal challenged by a pa
Publikováno v:
British Journal of Nutrition. 93:213-224
Literature solutions to the problem of protein and energy partitioning in the growing pig are quantitatively examined. Possible effects of live weight, genotype and food composition on the marginal response in protein retention to protein and energy
Publikováno v:
British Journal of Nutrition. 93:205-212
A core part of any animal growth model is how it predicts the partitioning of dietary protein and energy to protein and lipid retention for different genotypes at different degrees of maturity. Rules of partitioning need to be combined with protein a