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The voluntary intake of food by sheep and cattle in relation to their energy requirements for maintenance

Published online by Cambridge University Press:  02 September 2010

K. L. Blaxter ,
F. W. Wainman  and
J. L. Davidson
K. L. Blaxter
Affiliation:
The Hannah Dairy Research Institute, Ayr, Scotland
F. W. Wainman
Affiliation:
The Hannah Dairy Research Institute, Ayr, Scotland
J. L. Davidson
Affiliation:
The Hannah Dairy Research Institute, Ayr, Scotland
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Extract

The voluntary intake and apparent digestibility of three roughages, alone and in mixtures, by six steers and six sheep were studied in 56 individual experiments. The fasting metabolism of each animal was also determined so that maintenance energy needs could be assessed.

No significant differences between the voluntary intakes of roughages by cattle and sheep were found when, for all experiments with each species, voluntary intake (g./kg.W0·73)was regressed on apparent digestibility. Cattle, however, digested the same roughage better than did sheep and consumed more of it. Despite their higher maintenance needs/kg. W0·73, when given the same roughage cattle thus attained the same relative feeding level (energy apparently digested/energy required for maintenance) as did sheep, there being an indication that sheep were more efficient users of low quality roughages than cattle. Sheep with high maintenance requirements tended to eat more than those with low ones, but no such relationship could be established with cattle.

When fixed amounts of higher quality roughage were given to both steers and sheep which were also given a lower quality roughage ad libitum, the total intake of food was in proportion to the voluntary intakes attained when the roughages were given separately.

Type
Research Article
Information
Animal Production , Volume 8 , Issue 1 , February 1966 , pp. 75 - 83
Copyright
Copyright © British Society of Animal Science 1966

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References

REFERENCES

Alexander, R. A., Hentges, J. F. Jr., McCall, J. T., & Ash, W. O., 1962. Comparative digestibility of nutrients in roughages by cattle and sheep. J. Anim. Sci., 21: 21–373.CrossRefGoogle Scholar
Balch, C. C., & Campling, R. C. 1962. Regulation of voluntary food intake in ruminants. Nutr. Abstr. Rev., 32: 32–669.Google ScholarPubMed
Blaxter, K. L., & Wainman, F. W., 1961. The utilisation of food by sheep and cattle. J. agric. Sci., 57: 57–419.CrossRefGoogle Scholar
Blaxter, K. L., & Wainman, F. W., 1964. The utilisation of the energy of different rations by sheep and cattle for maintenance and for fattening. J. agric. Sci., 63: 63–113.CrossRefGoogle Scholar
Blaxter, K. L., Wainman, F. W., & Wilson, R. S., 1961. The regulation of food intake by sheep. Anim. Prod., 3: 3–51.Google Scholar
Blaxter, K. L., & Wilson, R. S., 1962. The voluntary intake of roughages by steers. Anim. Prod., 4: 4–351.Google Scholar
Blaxter, K. L., & Wilson, R. S., 1963. The assessment of a crop husbandry technique in terms of animal production. Anim. Prod., 5: 5–27.Google Scholar
Buchman, D. T., & Hemken, R. W., 1964. Ad libitum intake and digestibility of several alfalfa hays by cattle and sheep. J. Dairy Sci., 47: 47–861.CrossRefGoogle Scholar
Campling, R. C., 1964. Factors affecting the voluntary intake of grass. Proc. Nutr. Soc., 23: 23–80.CrossRefGoogle Scholar
Cipolloni, M. A., Schneider, B. H., Lucas, H. L., & Pavlech, H. M., 1951. Significance of the differences in digestibility of feeds by cattle and sheep. J. Anim. Sci., 10: 10–337.CrossRefGoogle ScholarPubMed
Conrad, H. R., Pratt, A. D., & Hibbs, J. W., 1964. Regulation of feed intake in dairy cows. I. Change in importance of physical and physiological factors with increasing digestibility. J. Dairy Sci., 47: 47–54.CrossRefGoogle Scholar
Freer, M., & Campling, R. C., 1963. Factors affecting the voluntary intake of food by cows. (5) The relationship between the voluntary intake of food, the amount of digesta in the reticulo rumen and the rate of disappearance of digesta from the alimentary tract with diets of hay, dried grass and concentrates. Brit. J. Nutr. 17: 17–79.CrossRefGoogle Scholar
Kleiber, M., 1961. The Fire of Life. John Wiley & Sons Inc., New York.Google Scholar
McCullough, M. E., 1963. Relationship between digestible dry matter of forage and average daily gain of dairy heifers. J. Dairy Sci., 46: 46–861.CrossRefGoogle Scholar
Swift, R. W., & Bratzler, J. W., 1959. A comparison of the digestibility of forages by cattle and sheep. Univ. Pa. Agric. Exp. Sta. Bull. no. 651, pp. 5.Google Scholar
Wainman, F. W., & Blaxter, K. L., 1958a. Closed-circuit respiration apparatus for the cow and steer. Publ. European Association for Animal Production no. 8, pp. 80–84.Google Scholar
Wainman, F. W., & Blaxter, K. L., 1958b. Developments in the design of closed circuit respiration apparatus for animals weighing up to 70 kg. Publ. European Association for Animal Production no. 8, pp. 85–92.Google Scholar