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The effect of trenbolone acetate on growth rate and carcass composition of young female rabbits

Published online by Cambridge University Press:  02 September 2010

G. E. Lobley ,
A. Walker ,
Alexmary Connell  and
H. Galbraith
G. E. Lobley
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, AB2 9SB
A. Walker
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, AB2 9SB
Alexmary Connell
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, AB2 9SB
H. Galbraith
Affiliation:
North of Scotland College of Agriculture, 581 King Street, Aberdeen, AB9 1UD
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Abstract

1. Eighteen New Zealand White × Califomian young female rabbits (does) were paired by weight and age and, at 800 g live weight, placed on a restricted intake based on the mean body weight of each pair. On attaining 1 kg one of each pair was then given 10 mg trenbolone acetate by injection on days 1, 3 and 5 of each week. This continued until the animals reached 2·3 to 2·4 kg (5 to 6 weeks).

2. There were no differences in digestible or metabolizable energy intakes between treated and untreated rabbits. However, the treated animals showed small but significant increases in rates of gain for live and empty body weight compared with control does. Treated animals also had significantly more nitrogen (P < 0·001) and less energy (P < 0·05) per unit empty body weight than controls. Although the proportion of total nitrogen retention was 0·19 greater (P < 0·001) in treated does, total energy retention was only slightly less. Treated animals had approximately 40 g (200 g/kg) less fat and 50 g more protein (N × 6·25) than control does at the end of the trial.

3. Increases in liver weight and clitoral size were observed in treated animals.

Type
Research Article
Information
Animal Production , Volume 36 , Issue 1 , February 1983 , pp. 111 - 115
Copyright
Copyright © British Society of Animal Science 1983

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References

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