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The effects of dietary protein concentration on the lactational performance of the rabbit

Published online by Cambridge University Press:  02 September 2010

G. G. Partridge  and
S. J. Allan
G. G. Partridge
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
S. J. Allan
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
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Abstract

An experiment was performed to examine the effects of feeding four concentrations of crude protein in the diet to lactating rabbits. Diets A, B, C and D contained 173, 181, 224 and 243 g crude protein per kg dry matter respectively. Each diet was offered at one of two feeding levels: H (330 g/day) or L (280 g/day) with three replicates in each of the eight treatment groups. Milk production and nitrogen balance were measured over a 28-day lactation.

Although dry-matter intakes on feeding level H were significantly higher than those on feeding level L the difference diminished as the crude protein concentration decreased. The effect of crude protein intake on doe milk production was estimated therefore by regression analysis with digestible energy intake as a covariate. Both crude protein intake and digestible energy intake alone had significant effects (P < 0·001) on daily milk production and there was also a significant effect (P < 0·05) of crude protein intake after fitting digestible energy intake. Overall the equation was:

Milk production (g/day) =

17·61 + 0·985 crude protein intake (g/day) + 30·3 digestible energy intake (MJ/day).

(±0·448) (±14·8)

The relationship between digested nitrogen and nitrogen output as milk was also examined by regression analysis with digestible energy intake as a covariate. This equation was:

Nitrogen output in milk (g/day) =

0·438 + 0·164 digested nitrogen (g/day) + 0·572 digestible energy intake (MJ/day).

(±0·068) (±0·294)

The practical implications of feeding high levels of crude protein in the diet to increase milk production and pup weaning weight are discussed.

Type
Research Article
Information
Animal Production , Volume 37 , Issue 1 , August 1983 , pp. 119 - 123
Copyright
Copyright © British Society of Animal Science 1983

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References

REFERENCES

Cheeke, P. R. 1974. Feed preferences of adult male Dutch rabbits. Lab. Anim. Sci. 24: 601–604.Google ScholarPubMed
Greenhalgh, J. F. D., Baird, Barbara, Grubb, D. A., Done, S., Lightkoot, A. L., Smith, P., Toplis, P., Walker, N., Williams, D. and Yeo, M. L. 1980. Coordinated trials on the protein requirements of sows. 2. A comparison of two levels of dietary protein in gestation and four in lactation. Anim. Prod. 30: 395–406.Google Scholar
Lang, J. 1981. The nutrition of the commercial rabbit. Nutr. Abstr. Rev. Ser. B. 51: 197–225, 287-302.Google Scholar
National Research Council. 1977. Nutrient Requirements of Rabbits. 2nd ed. National Academy of Sciences, Washington DC.Google Scholar
Partridge, G. G. and Allan, S. J. 1982. The effects of different intakes of crude protein on nitrogen utilization in the pregnant and lactating rabbit. Anim. Prod. 35: 145–155.Google Scholar
Spreadbury, D. 1978. A study of the protein and amino acid requirements of the growing New Zealand White rabbit with emphasis on lysine and the sulphur-containing amino acids. Br. J. Nutr. 39: 601–613.CrossRefGoogle ScholarPubMed