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The protein requirement of the ruminant calf. I. The effect of protein content of the concentrate mixture on the performance of calves weaned at an early age

Published online by Cambridge University Press:  02 September 2010

I. J. F. Stobo ,
J. H. B. Roy  and
Helen J. Gaston
I. J. F. Stobo
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading
J. H. B. Roy
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading
Helen J. Gaston
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading
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Extract

1. Three experiments are reported, in which a total of seventy-two calves were weaned at 3 or 5 weeks of age and given concentrate mixtures containing either 19·2% or 11·9% crude protein, together with hay and water up to 12 weeks of age.

2. The performance of cross-bred calves weaned at 3 weeks of age and given concentrates ad libitum was significantly greater when the high-protein concentrate was used in Experiment 1.

3. In Experiment 2, in which Friesian heifer calves were weaned at 5 weeks and given concentrates ad libitum, the level of protein in the concentrates had no significant effect on live-weight gain from birth to 12 weeks. However, there was a tendency for the performance of calves given the concentrate containing 11·9% crude protein to be slightly inferior up to the age of 8 weeks.

4. When concentrate intake was restricted to 2 kg./day in Experiment 3, in which Friesian heifer calves were weaned at 5 weeks of age, the live-weight gain was significantly greater when the higher level of protein was given.

5. Daily increases in height at withers, heart girth and belly girth tended to be greater in all instances when the concentrate containing 19·2% crude protein was given, but significant differences between treatments occurred only in Experiment 3 for increase in heart girth and belly girth.

6. It is apparent from the results that the calf weaned at an early age needs to be given a concentrate containing more than 11·9% crude protein if maximum live-weight gain is to be achieved up to 8 weeks of age. The optimum protein content of the concentrate after this age seems to depend on the level of concentrate feeding. The relationship between energy and protein in determining production is discussed.

Type
Research Article
Information
Animal Production , Volume 9 , Issue 1 , February 1967 , pp. 7 - 21
Copyright
Copyright © British Society of Animal Science 1967

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References

REFERENCES

Broster, W. H., Tuck, V. J., & Balch, C. C., 1963. Experiments on the nutrition of the dairy heifer. 4. Protein requirements of 2-year-old heifers. J. agric. Sci., Camb., 60: 393–398.Google Scholar
Brown, L. D., Lassiter, C. A., Everett, J. P., Seath, D. M., & Rust, J. W., 1958. Effect of protein level in calf starters on the growth rate and metabolism of young calves. J. Dairy Sci., 41: 1425–1433.Google Scholar
Converse, H. T., 1949. Experiments in rearing calves without whole milk and with limited amounts of skim milk. Circ. U.S. Dep. Agric., no. 822.Google Scholar
Davis, H. P., & Hathaway, I. L., 1955. Growth measurements of Holstein females from birth to seven years. Res. Bull. Neb. agric. Exp. Sta., no. 177.Google Scholar
Davis, H. P., Morgan, R. F., Brody, S., & Ragsdale, A. C., 1937. Relation of height at withers and chest girth to live-weight of dairy cattle of different breeds and ages. Res. Bull. Neb. agric. Exp. Sta., no. 91.Google Scholar
Davis, H. P., Swett, W. W., & Harvey, W. R., 1961. Relation of heart girth to weight in Holsteins and Jerseys. Res. Bull. Neb. agric. Exp. Sta., no. 194.Google Scholar
Eckles, C. H., 1920. The normal growth of dairy cattle. Res. Bull. Mo. agric. Exp. Sta., no. 36.Google Scholar
Espe, D. L., Cannon, C. Y., & Hansen, E. N., 1932. Normal growth in dairy cattle. Res. Bull. Iowa agric. Exp. Sta., no. 154.Google Scholar
Lofgreen, G. P., Loosli, J. K., & Maynard, L. A., 1951. The influence of energy intake on the nitrogen retention of growing calves. J. Dairy Sci., 34: 911–915.Google Scholar
Matthews, C. A., & Forhman, M. H., 1954. Beltsville growth standards for Holstein cattle. Tech. Bull. U.S. Dep. Agric., no. 1099.Google Scholar
Moir, R. J., 1961. A note on the relationship between digestible dry matter and the digestible energy content of ruminant diets. Aust. J. exp. Agric. Anim. Husb., 1: 24–26.Google Scholar
Nelms, G. E., & Bogart, R., 1956. The effect of birth weight, age of dam and time of birth on suckling gains of beef calves. J. Anim. Sci., 15: 662–666.CrossRefGoogle Scholar
Preston, T. R., 1956. Studies on the rearing of calves weaned from milk between two and four weeks of age. Proc. Brit. Soc. Anim. Prod., pp. 67–77.Google Scholar
Ragsdale, A. C., 1934. Growth standards for dairy cattle. Bull. Mo. agric. Exp. Sta., no. 336.Google Scholar
Roy, J. H. B., Shillam, K. W. G., Hawkins, G. M., & Lang, J. M., 1958. The milk requirements of the newborn calf. Br. J. Nutr., 12: 123–137.Google Scholar
Savage, E. S., & McCay, C. M., 1942. The nutrition of calves; a review. J. Dairy Sci., 25: 595–650.Google Scholar
Stobo, I. J. F., 1964. Studies in the nutrition of young cattle with special reference to rumen development and protein requirements of the early-weaned calf. Ph.D. Thesis Univ. Reading.Google Scholar
Stobo, I. J. F., & Roy, J. H. B., 1964, The minimum protein requirements of the calf. Anim. Prod. 6.: 259–260 (Abstr.)Google Scholar
Stobo, I. J. F., Roy, J. H. B., & Gaston, H. J., 1966. Rumen development in the calf. 2. The effect of diets containing different proportions of concentrates to hay on digestive efficiency. Br. J. Nutr., 20: 189–215.Google Scholar