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Genetic effects on maternal performance and litter pre-weaning and post-weaning traits in rabbits†

Published online by Cambridge University Press:  02 September 2010

S. Lukefahr ,
W. D. Hohenboken ,
P. R. Cheeke  and
N. M. Patton
S. Lukefahr
Affiliation:
Department of Animal Science
W. D. Hohenboken
Affiliation:
Department of Animal Science
P. R. Cheeke
Affiliation:
Department of Animal Science
N. M. Patton
Affiliation:
Laboratory Animal Resources, Oregon State University, Corvallis, Oregon 97331, USA
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Abstrtact

Flemish Giant (FG) and New Zealand White (NZW) purebreds and terminal crossbreds (TX) (Flemish Giant sires × Florida White-New Zealand White dams) were evaluated during a 10-month period for maternal and litter pre-weaning and post-weaning performance. For the doe traits studied, teat number was greatest and litter interval was shortest, while body weight at breeding age (154 days), litter weight at 21 days and day 1 to 21 food intake were lowest for crossbred does. These traits were similar for pure doe groups, with the exception of body weight, for which FG does were heavier. For the preweaning litter traits examined (no. = 101 litters), litter size born was smallest in the TX group (the purebred groups being similar) and was largest at weaning (28 days) for NZW. Proportion of kits born alive was lowest in FG litters, while the NZW and TX groups were comparable. Litter and average birth and weaning weights, litter daily gain, and doe and litter food intake (1 to 28 days) were all highest in FG litters and lowest in TX litters. Repeatability estimates (t) were low (t < 0·05) for litter size and birth weight traits, and were moderate to high (0·18 < t < 0·58) for the remaining maternally influenced characters. For the post-weaning litter traits studied (no. = 86 litters), NZW litters were larger in number and heavier at market age (56 days), and consumed more food from 28 to 56 days than FG and TX litters. Purebred FG litters, however, had heavier average market weights per rabbit, while purebred NZW and TX litters were similar. Mortality due to respiratory disease was higher in FG litters than in NZW and TX litters. Total mortality incidence was lowest in the TX group.

Type
Research Article
Information
Animal Production , Volume 38 , Issue 2 , April 1984 , pp. 293 - 300
Copyright
Copyright © British Society of Animal Science 1984

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