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Contribution of whole-body protein synthesis to basal metabolism in layer and broiler chickens*

Published online by Cambridge University Press:  09 March 2007

T. Muramatsu ,
Y. Aoyagi ,
J. Okumura  and
I. Tasaki
T. Muramatsu
Affiliation:
Laboratory of Animal Nutrition, School of Agriculture, Nagoya University, Chikusa-ku, Nagoya 464, Japan
Y. Aoyagi
Affiliation:
Laboratory of Animal Nutrition, School of Agriculture, Nagoya University, Chikusa-ku, Nagoya 464, Japan
J. Okumura
Affiliation:
Laboratory of Animal Nutrition, School of Agriculture, Nagoya University, Chikusa-ku, Nagoya 464, Japan
I. Tasaki
Affiliation:
Laboratory of Animal Nutrition, School of Agriculture, Nagoya University, Chikusa-ku, Nagoya 464, Japan
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Abstract

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1. The effect of starvation on whole-body protein synthesis and on the contribution of protein synthesis to basal metabolic rate was investigated in young chickens (Expt 1). Strain differences between layer and broiler chickens in whole-body protein synthesis and degradation rates were examined when the birds were starved (Expt 2).

2. In Expt 1, 15-d-old White Leghorn male chickens were used, while in Expt 2 Hubbard (broiler) and White Leghorn (layer) male chickens at 14 d of age were used. They were starved for 4 d, and heat production was determined by carcass analysis after 2 and 4 d of starvation. Whole-body protein synthesis rates were measured on 0, 2 and 4 d of starvation (Expt 1), and on 0 and 4 d of starvation (Expt 2).

3. The results showed that starving reduced whole-body protein synthesis in terms of fractional synthesis rate and the amount synthesized. Whole-body protein degradation was increased by starvation both in terms of fractional synthesis rate and the amount degraded on a per kg body-weight basis.

4. Reduced fractional synthesis rate of protein in the whole body was accounted for by reductions in both protein synthesis per unit RNA and RNA:protein ratio.

5. In the fed state, whole-body protein synthesis and degradation rates, whether expressed as fractional rates or amounts per unit body-weight, tended to be higher in layer than in broiler chickens. In the starved state, the difference in the rate of protein synthesis between the two strains virtually disappeared, while the degradation rates were higher in layer than in broiler birds.

6. Based on the assumed value of 3.56 kJ/g protein synthesized (Waterlow et al. 1978), the heat associated with whole-body protein synthesis in the starved state was calculated to range from 14 to 17% of the basal metabolic rate with no strain difference between layer and broiler chickens.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 57 , Issue 2 , March 1987 , pp. 269 - 277
Copyright
Copyright © The Nutrition Society 1987

References

REFERENCES

Bates, P. C. & Millward, D. J. (1981). British Journal of Nutrition 46, 7–13.CrossRefGoogle Scholar
Buttery, P. J. & Boorman, K. N. (1976). In Protein Metabolism and Nutrition, pp. 197–215. [Cole, D. J. A., Boorman, K. N., Buttery, P. J., Lewis, D., Neal, R. J. and Swan, H., editors].London: Butterworths.Google Scholar
Garlick, P. J., McNurlan, M. A. & Preedy, V. R. (1980). Biochemical Journal 192, 719–723.CrossRefGoogle Scholar
Kang, C. W., Sunde, M. L. & Swick, R. W. (1985). Poultry Science 64, 370–379.CrossRefGoogle Scholar
Kien, C. L., Rohrbaugh, D. K., Burke, J. F. & Young, V. R. (1978). Pediatric Research 12, 211–216.CrossRefGoogle Scholar
Kuenzel, W. J. & Kuenzel, N. T. (1977). Poultry Science 56, 619–627.CrossRefGoogle Scholar
Laurent, G. J., Sparrow, M. P., Bates, P. C. & Millward, D. J. (1978). Biochemical Journal 176, 393–405.CrossRefGoogle Scholar
McNurlan, M. A., Tomkins, A. M. & Garlick, P. J. (1979). Biochemical Journal 178, 373–379.CrossRefGoogle Scholar
Millward, D. J., Garlick, P. J., Nnanyelugo, D. O. & Waterlow, J. C. (1976). Biochemical Journal 156, 185–188.CrossRefGoogle Scholar
Munro, H. N. & Fleck, A. (1969). In Mammalian Protein Metabolism, vol. 3, pp. 423–525. [Munro, H. N., editor]. New York: Academic Press.CrossRefGoogle Scholar
Muramatsu, T., Kato, M., Tasaki, I. & Okumura, J. (1986). British Journal of Nutrition 55, 635–641.Google Scholar
Muramatsu, T. & Okumura, J. (1985). Journal of Nutrition 115, 483–490.CrossRefGoogle Scholar
Okumura, J., Katsu, K., Ishimoto, Y. & Tasaki, I. (1973). Japanese Journal of Zootechnical Science 44, 623–624.Google Scholar
Snedecor, G.W. & Cochran, W. G. (1980). Statistical Methods, 7th ed., pp. 215–237. Ames, Iowa: Iowa State University Press.Google Scholar
Waterlow, J. C., Garlick, P. J. & Millward, D. J. (1978). Protein Turnover in Mammalian Tissues and in the Whole Body, pp. 443–479, Amsterdam: North-Holland Publishing Co.Google Scholar
Webster, A. J. F. (1981). Proceedings of the Nutrition Society 40, 121–128.CrossRefGoogle Scholar
Whittemore, C. T. & Fawcett, R. H. (1976). Animal Production 22, 87–96.Google Scholar