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The intake, digestion and protein degradation of grazed herbage by early-weaned lambs

Published online by Cambridge University Press:  09 March 2007

G. J. Cruickshank ,
D. P. Poppi  and
A. R. Sykes
G. J. Cruickshank
Affiliation:
Animal and Veterinary Sciences Group, Lincoln University, Canterbury, New Zealand
D. P. Poppi
Affiliation:
Animal and Veterinary Sciences Group, Lincoln University, Canterbury, New Zealand
A. R. Sykes
Affiliation:
Animal and Veterinary Sciences Group, Lincoln University, Canterbury, New Zealand
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Abstract

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Sixty-four intact lambs and twenty-four lambs fitted with a duodenal cannula were weaned at 6 weeks of age and grazed pure species swards of either lucerne (Medicago sativa), white clover (Trifolium repens), ryegrass (Lolium perenne) or prairie grass (Bromus catharticus) for 6 weeks. Intake and duodenal digesta flow were estimated when lambs were 8 and 12 weeks of age. Lambs grazing the two legume species grew at a similar rate, as did lambs grazing the two grass species. Legumes promoted a 38% higher growth rate than grasses. The higher growth rate of lambs grazing legumes was associated with a 36% higher digestible organic matter intake (DOMI; 29.5 and 21.7 g/kg body-weight per d for legume and grass respectively) and a 33% higher duodenal non-ammonia-nitrogen (NAN) flow (1.22 and 0.92 g/kg body-weight per d respectively). There was no species difference in the site of organic matter digestion; on average 0.56 of DOMI was apparently digested in the rumen and 0.77 of DOMI was truly digested in the rumen. There was no difference in duodenal NAN flow, relative to DOMI (average, 43 g/kg) or to organic matter apparently digested in the rumen (80 g/kg). Similarly, there was no difference in microbial N flow relative to duodenal NAN (0.50 g/g) and organic matter apparently (41 g/kg) or truly (29 g/kg) digested in the rumen. It was concluded that the higher growth rates achieved by lambs grazing legumes were due to higher intakes which increased the total quantity of nutrients supplied despite more protein being lost in the rumen of lambs consuming legumes.

Keywords

Early weaningGrazing intakeNutrient supplyLambs
Type
Protein Digestion and Metabolism
Information
British Journal of Nutrition , Volume 68 , Issue 2 , September 1992 , pp. 349 - 364
Copyright
Copyright © The Nutrition Society 1992

References

REFERENCES

Alam, M. R., Lawson, G. D., Poppi, D. P. & Sykes, A. R. (1987). Comparison of the site and extent of digestion of nutrients of a forage in kids and lambs. Journal of Agricultural Science, Cambridge 109, 583–589.CrossRefGoogle Scholar
Beever, D. E., Dhanoa, M. S., Losada, H. R., Evans, R. T., Cammell, S. B. & France, J. (1986 a). The effect of forage species and stage of harvest on the processes of digestion occurring in the rumen of cattle. British Journal of Nutrition 56, 439–454.CrossRefGoogle ScholarPubMed
Beever, D. E., Losada, H. R., Cammell, S. B., Evans, R. T. & Haines, M. J. (1986 b). Effect of forage species and season on nutrient digestion and supply in grazing cattle. British Journal of Nutrition 56, 209–225.CrossRefGoogle ScholarPubMed
Beever, D. E. & Siddons, R. C. (1986). Digestion and metabolism in the grazing ruminant. In Control of Digestion and Metabolism in Ruminants, pp. 479–497 [Milligan, L. P., Grovum, W. L. and Dobson, A., editors]. Englewood Cliffs: Prentice Hall.Google Scholar
Beever, D. E., Thomson, D. J., Ulyatt, M. J., Cammell, S. B. & Spooner, M. C. (1985). The digestion of fresh perennial ryegrass (Lolium perenne L. cv. Melle) and white clover (Trifolium repens L. cv. Blanca) by growing cattle fed indoors. British Journal of Nutrition 54, 763–775.CrossRefGoogle ScholarPubMed
Corbett, J. L., Furnival, E. P., Inskip, M. W. & Pickering, F. S. (1982). Protein digestion in grazing sheep. Forage Protein in Ruminant Animal Production. British Society of Animal Production Occasional Publication no. 6, pp. 141–143. Thames Ditton: British Society of Animal Production.Google Scholar
Corbett, J. L., Lynch, J. J., Nicol, G. R. & Beeston, J. W. U. (1976). A versatile peristaltic pump designed for grazing lambs. Laboratory Practice 25, 458–462.Google ScholarPubMed
Corbett, J. L. & Pickering, F. S. (1983) Estimation of daily flows of digesta in grazing sheep. Australian Journal of Agricultural Research 34, 193–210.CrossRefGoogle Scholar
Cruickshank, G. J., Poppi, d. P. & Sykes, A. R. (1985). Intake and duodenal protein flow in early weaned lambs grazing white clover, lucerne, ryegrass and prairie grass. Proceedings of the New Zealand Society of Animal Production 45, 113–116.Google Scholar
Cruickshank, G. J., Poppi, D. P., Sykes, A. R. & Familton, A. S. (1990). Effect of age, abomasal cannulation and rumen catheterization on intake and site of digestion by early weaned lambs. Journal of Agricultural Science, Cambridge 114, 49–54.CrossRefGoogle Scholar
Faichney, G. J. (1975). The use of markers to partition digestion within the gastro-intestinal tract of ruminants. In Digestion and Metabolism in the Ruminant, pp. 277–291 [McDonald, I. W. and Warner, A. C. I., editors]. Armidale: University of New England Publishing Unit.Google Scholar
Faichney, G. J. (1980) The use of markers to measure digesta flow from the stomach of sheep fed once daily. Journal of Agricultural Science, Cambridge 94, 313–318.CrossRefGoogle Scholar
Hogan, J. P. (1973). Intestinal digestion of subterranean clover by sheep. Australian Journal of Agricultural Research 24, 587–598.CrossRefGoogle Scholar
Jagusch, K. T., Clark, V. R. & Jay, N. P. (1970). Lamb production from animals weaned at 3 to 5 weeks of age on to lucerne. New Zealand Journal of Agricultural Research 13, 808–814.CrossRefGoogle Scholar
Jagusch, K. T., Mitchell, R. M., McConnell, G. R., Fennessy, P. F., Woodlock, M. R. & Jay, N. P. (1971). Nutrition of the growing lamb: studies at Lincoln College. Proceedings of the New Zealand Society of Animal Production 31, 121–128.Google Scholar
Kennedy, P. M. (1985). Influences of cold exposure on digestion of organic matter, rates of passage of digesta in the gastrointestinal tract, and feeding and rumination behaviour in sheep given four forage diets in the chopped, or ground and pelleted form. British Journal of Nutrition 53, 159–173.CrossRefGoogle ScholarPubMed
Langlands, J. P., Corbett, J. L., McDonald, I. & Reid, G. W. (1963). Estimation of the faeces output of grazing animals from the concentration of chromium sesquioxide in a sample of faeces. 1. Comparison of estimates from samples taken at fixed times of day with faeces outputs measured directly. British Journal of Nutrition 17, 211–218.CrossRefGoogle Scholar
McLean, J. W., Thomson, G. G., Jagusch, K. T. & Lawson, B. M. (1965). Lamb growth and development in relation to pasture species. Proceedings of the Ruakura Farmers Conference Week pp. 34–40. Ruakura: MAF.Google Scholar
McLeod, M. N. & Minson, D. J. (1978). The accuracy of the pepsin cellulase technique for estimating dry matter digestibility in vivo of grasses and legumes. Animal Feed Science and Technology 3, 277–287.CrossRefGoogle Scholar
MacRae, J. C. & Ulyatt, M. J. (1974). Quantitative digestion of fresh herbage by sheep II. The site of digestion of some nitrogenous constituents. Journal of Agricultural Science, Cambridge 82, 309–319.CrossRefGoogle Scholar
Margan, D. E., Faichnev, G. J., Graham, N. McC. & Donnelly, J. B. (1982). Digestion of a ground and pelleted diet in the stomach and intestines of young sheep from two breeds. Australian Journal of Agricultural Research 33, 617–627.CrossRefGoogle Scholar
Mathers, J. C. & Miller, E. L. (1980). A simple procedure using 35S incorporation for the measurement of microbial and undegraded food protein in ruminant digesta. British Journal of Nutrition 43, 503–514.CrossRefGoogle ScholarPubMed
Penning, P. D. & Johnson, R. H. (1983). The use of internal markers to estimate herbage digestibility and intake 2. N Indigestible acid detergent fibre. Journal of Agricultural Science, Cambridge 100, 133–138.CrossRefGoogle Scholar
Rattray, P. V., Morrison, M. C. L. & Farquhar, P. A. (1976). Performance of early-weaned lambs on lucerne and pasture. Proceedings of the New Zealand Society of Animal Production 36, 179–183.Google Scholar
Thomson, D. J. & Beever, D. E. (1980). The effect of conservation and processing on the digestion of forages by ruminants. In Digestive Physiology and Metabolism in Ruminants, pp. 291–308 [Ruckebusch, Y. and Thivend, P., editors). Lancaster: MTP Press Ltd.CrossRefGoogle Scholar
Ulyatt, M. J. (1971). Studies on the causes of the differences in pasture quality between perennial ryegrass, short-rotation ryegrass and white clover. New Zealand Journal of Agricultural Research 14, 352–367.CrossRefGoogle Scholar
Ulyatt, M. J. & Egan, A. R. (1979). Quantitative digestion of fresh herbage by sheep. V. The digestion of four herbages and prediction of sites of digestion. Journal of Agricultural Science, Cambridge 92, 605–616.CrossRefGoogle Scholar
Ulyatt, M. J. & MacRae, J. C. (1974). Quantitative digestion of fresh herbage by sheep. 1. The site of digestion of organic matter, energy, readily fermentable carbohydrate, structural carbohydrate and lipid. Journal of Agricultural Science, Cambridge 82, 295–307.CrossRefGoogle Scholar
Ulyatt, M. J., Thomson, D. J., Beever, D. E., Evans, R. T. & Haines, M. J. (1988). The digestion of perennial ryegrass (Lolium perenne cv. Melle) and white clover (Trifolium repens cv. Blanca) by grazing cattle. British Journal of Nutrition 60, 137–149.CrossRefGoogle ScholarPubMed
Van Soest, P. J. & Wine, R. H. (1967). Use of detergents in the analysis of fibrous feeds. IV. Determination of plant cell wall constituents. Journal of the Association of Official Analytical Chemists 50, 50–55.Google Scholar
Weston, R. H. & Margan, D. E. (1979). Herbage digestion in the stomach and intestine of weaner lambs at different stages of their maturing. Australian Journal of Agricultural Research 30, 543–549.CrossRefGoogle Scholar