Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-23T16:36:51.898Z Has data issue: false hasContentIssue false
  • English
  • Français

Studies on unidentified growth factors

2. Progressin, a growth factor for chicks*

Published online by Cambridge University Press:  07 January 2011

J. Bunyan ,
Elspeth A. Murrell ,
M. A. Cawthorne  and
B. T. Redman
J. Bunyan
Affiliation:
Beecham Research Laboratories, Nutritional Research Centre, Walton Oaks, Tadworth, Surrey
Elspeth A. Murrell
Affiliation:
Beecham Research Laboratories, Nutritional Research Centre, Walton Oaks, Tadworth, Surrey
M. A. Cawthorne
Affiliation:
Beecham Research Laboratories, Nutritional Research Centre, Walton Oaks, Tadworth, Surrey
B. T. Redman
Affiliation:
Beecham Research Laboratories, Nutritional Research Centre, Walton Oaks, Tadworth, Surrey
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

1. Chicks at 10 d of age were given diets containing all the nutrients known to be required, with L-amino acids in place of protein. Dietary supplements were added isonitrogenously.

2. Ox liver (100 g/kg) greatly improved the chicks' growth rate, whereas torula yeast (50 g/kg) was inactive. The activity of fresh moist liver was considered to be due largely to an organic factor, because of the inactivity of water and the low activity of liver ash.

3. The growth rates of chicks receiving diets based upon casein and isolated soya-bean protein were significantly improved by the inclusion of 100 g fresh ox liver/kg, but not of 50 g torula yeast/kg.

4. These results show that chicks receiving an amino acid diet require an organic growth factor (Progressin) that differs from the yeast factor required by rats receiving an amino acid diet.

Type
General Nutrition
Information
British Journal of Nutrition , Volume 31 , Issue 2 , March 1974 , pp. 179 - 184
Copyright
Copyright © The Nutrition Society 1974

References

REFERENCES

Bhargava, K. K. & Sunde, M. L. (1969). Poult. Sci. 48, 694.CrossRefGoogle Scholar
Block, R. J. & Weiss, K. W. (1956). Amino Acid Handbook p. 296. Springfield, Illinois: Charles C. Thomas.Google Scholar
Bunyan, J., Murrell, E. A., Cawthorne, M. A. & Redman, B. T. (1974). Br J. Nutr. 31, 167.CrossRefGoogle Scholar
Couch, J. R. & Stelzner, H. D. (1961). Fedn Proc. Fedn Am. Socs exp. Biol 20, 370.Google Scholar
Dam, R., Morrison, A. B. & Norris, J. C. (1959). J. Nutr. 69, 277.CrossRefGoogle Scholar
Dean, W. F. & Scott, H. M. (1965). Poult. Sci. 44, 803.CrossRefGoogle Scholar
Dixon, T. & Couch, J. R. (1970). Poult Sci. 49, 393.CrossRefGoogle Scholar
Menge, H., Denton, C. A., Sizemore, J. R., Lillie, R. J. & Bird, H. R. (1953). Poult. Sci. 32, 863.CrossRefGoogle Scholar
Miller, D. & Soares, J. H. Jr (1972). Poult. Sci. 51, 1288.CrossRefGoogle Scholar
National Research Council (1960). Publs natn. Res. Coun., Wash. no. 827.Google Scholar
Schwarz, K. (1970). J. Nutr. 100, 1487.CrossRefGoogle Scholar
Schwarz, K., Smith, J. C. & Oda, T. A. (1966). Fedn Proc. Fedn Am. Socs exp. Biol. 25, 542 ABs.Google Scholar
Schwarz, K., Smith, J. C. & Oda, T. A. (1967). Lancet i, 731.CrossRefGoogle Scholar
Young, R. J., Blair, R. & Scott, M. L. (1971). Fedn Proc. Fedn Am. Socs exp. Biol. 30, 641 Abs.Google Scholar