Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-08T06:33:40.815Z Has data issue: false hasContentIssue false
  • English
  • Français

The effect of the growth-promoting, appetite-stimulating or “physin” factor on the live-weight increase of swine

Published online by Cambridge University Press:  27 March 2009

George Dunlop
George Dunlop
Affiliation:
Ministry of Agriculture Research Scholar (From the Animal Nutrition Research Institute, University of Cambridge.)
Get access Rights & Permissions [Opens in a new window]

Extract

Attention has been drawn to the remarkable growth rates obtained in certain litters of pigs under farm conditions.

It has been pointed out that no explanation has been put forward to account for their occurrence.

The literature relating to the new dietary factor, physin (Mapson), essential for optimum growth and reproduction in experimental rats, trout and dogs, has been reviewed.

Experiments are reported in which rations, adequate as far as our present knowledge of essential dietary constituents goes, were fed to young growing swine. In each of three experiments, animals which received in addition 4 oz. of raw minced liver per day showed a 40 per cent. increase in growth rate compared with the controls.

When food intake was controlled according to the new method of individual feeding, the liver animals showed the same gains in weight as the animals receiving the basal diet alone.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 25 , Issue 3 , July 1935 , pp. 445 - 459
Copyright
Copyright © Cambridge University Press 1935

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

(1)Bahrs, A. M.The effect of adding liver to the diet upon growth and reproduction of rats. Amer. J. Physiol. (1933), 105, 262.CrossRefGoogle Scholar
(2)Brody, S.Growth and development. III. Growth rates, their value and significance. Bull. Mo. agric. Exp. Stat. (1927), No. 97.Google Scholar
(3)Crowther, C.The work of the Harper-Adams College pig-feeding experimental station 1926–1931. J. R. agric. Soc. (1932), 92, 42.Google Scholar
(4)Daggs, R. G.Studies on Lactation. I. Production of milk in the dog as influenced by different kinds of food protein. J. Nutrit. (1931), 4, 443.CrossRefGoogle Scholar
(5)Dunlop, G.Methods of experimentation in animal nutrition. (a) J. agric. Sci. (1933), 23, 580. (b) J. agric. Sci. (1934), 24, 335.CrossRefGoogle Scholar
(6)Dunlop, G.Paralysis and avitaminosis A in swine. J. agric. Sci. (1934), 24, 435.CrossRefGoogle Scholar
(7)Golding, J. and Foot, A. S. Value of dairy products. Fmr. and Stk-Breed. Pig supplement (March 4, 1935).Google Scholar
(8)Graham, C. E. and Griffith, W. H.Studies on growth. I. Growth factors in liver. J. Nutrit. (1933), 6, 179.CrossRefGoogle Scholar
(9)Guha, B. C.Observations on certain factors necessary for the normal nutrition. Biochem. J. (1931), 25, 960.CrossRefGoogle ScholarPubMed
(10)Hammond, J.Pigs for pork and pigs for bacon. J. R. agric. Soc. (1932), 93, 131.Google Scholar
(11)Johnson, D. W. and Palmer, L. S.The appetite-stimulating and growth-promoting property of liver. J. Nutrit. (1934), 8, 285.CrossRefGoogle Scholar
(12)Leathes, J. B. and Raper, H. S.The Fats. Monographs on Biochemistry. Longmans, Green and Co., London, 1925, ed. 2.Google Scholar
(13)McCay, C. M., Dilly, W. E. and Crowell, M. F.Growth rates of brook trout reared upon purified rations, upon dried skim milk diets and upon feed combinations of cereal grains. J. Nutrit. (1929), 1, 233.CrossRefGoogle Scholar
(14)Mapson, L. W.Evidence of the existence of a new dietary principle stimulating general growth and lactation. Biochem. J. (1932), 26, 970.CrossRefGoogle Scholar
(15)Mapson, L. W. Private communication.Google Scholar
(16)Nakahara, W., Inukai, F. and Kato, S.A specific dietary factor for lactation Proc. Imp. Acad. Japan (1934), 10, 268.CrossRefGoogle Scholar
(17)Osborne, T. B. and Mendel, L. B.The relation of rate of growth to diet. J. biol. Chem. (1926), 69, 661.CrossRefGoogle Scholar
(18)Seigers, W. H. and Smith, H. G.Influence of raw and whole dried liver on food consumption and utilisation. Proc. Soc. exp. Biol., N.Y. (1932), 30, 365.CrossRefGoogle Scholar