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Intake and live-weight gain by British Friesian calves offered different ratios of dried grass and concentrates

Published online by Cambridge University Press:  02 September 2010

R. Marsh
R. Marsh
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down
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Summary

Four experiments were carried out with calves offered pellets containing different ratios of cereal/protein concentrate and dried grass together with 10% chopped hay. Organic matter digestibility of total ration declined by 5·2 percentage units for each 25% increment of dried grass.

Dry matter (DM) intake of the total ration increased as dried grass content increased from 0 to 50% which led to similar intakes of digestible organic matter (DOM) and daily gain. When pellets contained 75% dried grass, total DM intakes were reduced in two experiments, leading to DOM intakes and daily gains similar to that of calves offered pellets of dried grass only. In the third experiment, DM intake of pellets containing 75 % dried grass was greater than the intake of pellets containing 50 to 100 % dried grass. When equal quantities of DM were offered, DOM intakes and daily gains tended to decline linearly as dried grass content in the pellet increased. The replacement value of the dried grass for concentrate at equal levels of live-weight gain was 1·36: 1.

Type
Research Article
Information
Animal Production , Volume 20 , Issue 3 , June 1975 , pp. 345 - 353
Copyright
Copyright © British Society of Animal Science 1975

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References

REFERENCES

Aker, R. D., Kilkenny, J. B., Spedding, A. W. and Tayler, J. C. 1971. Beef Production: An Intensive Grassland System using Autumn-born Calves. Handbook No. 1. Meat and Livestock Commission, Bletchley, Bucks.Google Scholar
Harte, F. J. and Lawlor, M. J. 1972. Energy supplementation of dried grass as a feed for early weaned calves. Ir. J. agric. Res. 11: 41–46.Google Scholar
Lonsdale, C. R. and Tayler, J. C. 1971. The artificial rearing of calves and their growth on grass diets. III. The effect of length of period of feeding cold milk substitute to calves given dried grass in different physical forms. J. agric. Sci., Camb. 76: 495–505.CrossRefGoogle Scholar
McCullough, T. A. 1970. The evaluation of artificially dried grass for the rearing and fattening of Friesian steers. Rec. agric. Res., Belfast. 18: 111–115.Google Scholar
McCullough, T. A. 1974. The effect of different proportions of dried grass and concentrates in the diet on voluntary intake and performance of calves. Anim. Prod. 18: 49–58.Google Scholar
Marsh, R. 1974. The performance of early-weaned calves offered concentrates or artificially dried grasses. Anim. Prod. 18: 201–210.Google Scholar
Marsh, R., McCullough, T. A. and McKeown, J. B. 1973. The feasibility of replacing part or all of a concentrate ration for calves with dried grass. Rec. agric. Res., Belfast. 21: 31–36.Google Scholar
Montgomery, M. J. and Baumgardt, B. R. 1965. Regulation of food intake in ruminants. 1. Pelleted rations varying in energy concentration. J. Dairy Res. 48: 569–574.Google ScholarPubMed
Tait, R. M. 1972. The utilisation of dried grass by early weaned lambs. J. Br. Grassld Soc. 11: 217–220.CrossRefGoogle Scholar
Tayler, J. C. and Lonsdale, C. R. 1970. Growth of young cattle fed diets containing artificially dried forage. Eur. Ass. Anim. Prod., Godöllö, August, 1970.Google Scholar
Wilkins, R. J., Lonsdale, C. R., Tetlow, R. M. and Forrest, T. J. 1972. The voluntary intake and digestibility by cattle and sheep of dried grass wafers containing particles of different size. Anim. Prod. 14: 177–188.Google Scholar