Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-03T05:14:52.769Z Has data issue: false hasContentIssue false
  • English
  • Français

The vitamin A requirement of swine

Published online by Cambridge University Press:  27 March 2009

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

Summary and conclusions

The present paper reports the results of experiments which were carried out to obtain information on the types and amounts of the common foodstuffs which should be included in a ration for the prevention of avitaminosis A in swine. The actual vitamin A requirement of swine in terms of carotene was also investigated.

Ten different diets were used and three animals were placed on each. Seven of these diets produced the classical symptoms of avitaminosis A in the animals, two contained minimal or just subminimal amounts of the vitamin, while one appeared to permit storage.

The rations on which the symptoms of avitaminosis A did not appear included maize meal and alfalfa meal. Both these foodstuffs, however, have been shown to produce undesirable effects in the animals at the levels at which they must be fed to prevent the onset of the disease symptoms.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 25 , Issue 2 , April 1935 , pp. 217 - 230
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)Bethke, R. M., Edgington, B. H. and Kick, C. H.Effect of the calcium-phosphorus relationship of the ration on growth and bone formation in the pig. J. agric. Res. (1933), 47, 331.Google Scholar
(2)Blisset, A. H. and Golding, J.Biochem. J. (1931), 25, 349.CrossRefGoogle Scholar
(3)Davies, A. W.The colorimetric estimation of vitamin A by the alkali-digestion method. Biochem. J. (1933), 27, 1770.Google Scholar
(4)Dunlop, G.Methods of experimentation in animal nutrition. J. agric. Sci. (1933), 23, 580.CrossRefGoogle Scholar
(5)Dunlop, G.Paralysis and avitaminosis A in swine. J. agric. Sci. (1934), 24, 435.CrossRefGoogle Scholar
(6)Dunlop, G.The calcium, phosphorus and vitamin D requirements of swine. J. agric. Sci. (1935), 25, 22.CrossRefGoogle Scholar
(7)Dunlop, G.Control of variation in live-weight gain in animal nutrition experiments. J. agric. Sci. (1935), 25, 151.CrossRefGoogle Scholar
(8)Fisher, E. A. and Shaw, T.The fibre content of British-milled wheat-feed. J. Min. Agric. (1934). 41, 255.Google Scholar
(9)Golding, J. and Foot, A. S. Avitaminosis A in pigs. Paper read at A.E.A. meetings, London, Dec. 1934.Google Scholar
(10)Wiseman, H. G., Kane, E. A. and Cary, C. A.The losses involved in determining carotene in hays and fresh green plants. J. biol. Chem. (1934), 105, Proc. ci.Google Scholar
(11)Yates, F.A complex pig-feeding experiment. J. agric. Sci. (1934), 24, 511.CrossRefGoogle Scholar