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The effect of increasing the proportion of barley straw in pelleted concentrate diets given to lambs on rumen outflow rate and degradation of protein supplements

Published online by Cambridge University Press:  02 September 2010

C. Castrillo ,
M. Lainez ,
J. Gasa  and
J. A. Guada
C. Castrillo
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Universidad de Zaragoza, Zamgoza 50013, Spain
M. Lainez
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Universidad de Zaragoza, Zamgoza 50013, Spain
J. Gasa
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Universidad de Zaragoza, Zamgoza 50013, Spain
J. A. Guada
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Universidad de Zaragoza, Zamgoza 50013, Spain
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Abstract

Two experiments are described in which growing lambs were offered ad libitum two concentrate pelleted diets containing 60 (diet C) or 230 (diet D) g/kg barley straw.

In the first experiment, eight male and eight female lambs were used to determine the outflow rate from the rumen of chromium-mordanted fish meal and soya-bean meal, estimated from faecal marker excretion. Diet D promoted a higher rumen outflow rate (0·0769 per h) than diet C (0·0486 per h); no differences were found either between sexes or between Cr-mordanted protein supplements.

In the second experiment, the rumen degradation of fish meal, soya-bean meal, sunflower meal, pea seeds and sweet lupin seeds was studied by incubating the supplements in polyester bags in the rumens of four lambs, following a change-over design. Increasing the proportion of straw to 230 g/kg increased the rate of nitrogen disappearance from all vegetable supplements, the differences being significant only for pea seeds.

When degradation kinetics and outflow rates were considered together, effective nitrogen degradability of protein supplements was reduced by the increased proportion of dietary straw, indicating a greater influence of rumen outflow rate than of the increased rate of microbial degradation.

Keywords

degradationlambsprotein supplementsstraw
Type
Research Article
Information
Animal Production , Volume 54 , Issue 1 , February 1992 , pp. 59 - 66
Copyright
Copyright © British Society of Animal Science 1992

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References

Agricultural Research Council. 1980. The nutrient requirements of ruminant livestock. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Association of Official Analytical Chemists. 1980. Official methods of analysis of the Association of Official Agricultural Chemists. 13th ed. Washington, DC.Google Scholar
Balcells, J., Castrillo, C., Baucells, M. and Guada, J. A. 1989. Efecto de la concentración energética de la dieta y de la fase de crecimiento sobre la retención de nitrógeno en corderos de raza “Raza Aragonesa”. Investigatión Agraria, Productión y Sanidad animates 4: 99–109.Google Scholar
de, Boer G., Murphy, J. J. and Kennelly, J. J. 1986. Mobile nylon bag for estimating intestinal availability of rumen undegradable protein. Journal of Dairy Science 70: 977–982.Google Scholar
Colucci, P. E., MacLeod, G. K., Grovum, W. L. and McMillan, I. 1984. Comparative digestion and digesta kinetics in sheep and cattle. Canadian journal of Animal Science 64: Suppl., pp. 173–174.CrossRefGoogle Scholar
Elimam, M. E. and Ørskov, E. R. 1984a. Factors affecting the outflow of protein supplements from the rumen. 1. Feeding level. Animal Production 38: 45–51.Google Scholar
Elimam, M. E. and Ørskov, E. R. 1984b. Estimation of rates of outflow of protein supplement from the rumen by determining the rate of excretion of chromium-treated supplements in faeces. Animal Production 39: 77–80.Google Scholar
Freer, M. and Dove, H. 1984. Rumen degradation of protein in sunflower meal, rapeseed meal and lupin seed placed in nylon bags. Animal Feed Science and Technology 11:87–101.CrossRefGoogle Scholar
Ganev, G., Ørskov, E. R. and Smart, R. 1979. The effect of roughage or concentrate feeding and rumen retention time on total degradation of protein in the rumen. Journal of Agricultural Science, Cambridge 93: 651–656.CrossRefGoogle Scholar
Gonzalez, J., Michalet-Doreau, B. and Poncet, C. 1987. Effects du niveau d'ingestion et du pourcentage de concentré dans la ration sur la dégradabilite de l'azote in sacco chez le mouton. Reproduction Nutrition and Developpement 27:255–257.CrossRefGoogle Scholar
Grovum, W. L. and Williams, V. J. 1973. Rate of passage of digesta in sheep. Passage of marker through the alimentary tract and the biological relevance of rate-constants derived from the changes in concentration of marker in faeces. British Journal of Nutrition 30: 313–329.CrossRefGoogle ScholarPubMed
Guada Vallepuga, J. A., Castrillo Gonzalez, C., Vega Garcia, A. and Gasa Gaso, J. 1986. Rumen outflow rate estimated from the decline of chromium concentration in faecal and rumen samples after the dosage of sodium dichromate fish meal. Animal Production 42: 471–472. (abstr.).Google Scholar
Hadjipanayiotou, M., Koumas, A., Georghiades, E. and Hadjidemetriou, D. 1988. Studies on degradation and outflow rate of protein supplements in the rumen of dry and lactating Chios ewes and Damascus goats. Animal Production 46: 243–248.Google Scholar
Harvey, W. R. 1987. LSMLMW computing procedures and applications. Department of Dairy Science, Ohio State University, Columbus, Ohio.Google Scholar
Latham, M. J., Sharpe, M. E. and Sutton, J. D. 1971. The microbial flora of the rumen of cows fed hay and high cereal rations and its relationship to the rumen fermentation. Journal of Applied Bacteriology 34:425–434.CrossRefGoogle Scholar
Lindberg, J. E. 1981a. The effect of basal diet on the ruminal degradation of dry matter, nitrogenous compounds and cell walls in nylon bags. Roughage and cereals in various proportions. Swedish Journal Agricultural Research 11: 159–169.Google Scholar
Lindberg, J. E. 1981b. Rumen degradation pattern of dry matter and nitrogenous compounds of some concentrates studied with the nylon-bag technique. Effect of the amount of hay in the basal diet. Swedish Journal of Agricultural Research 11:171–176.Google Scholar
Lindberg, J. E. 1985. Estimation of rumen degradability of feed proteins with the in sacco technique and various in vitro methods: a review. Acta Agriculturae Scandinavica, suppl. 25, pp. 64–97.Google Scholar
Loerch, S. C., Berger, L. L., Gianola, D. and Fahay, G. C. 1983. Effect of dietary protein source and energy level on in situ nitrogen disappearance of various protein sources. Journal of Animal Science 56: 206–216.CrossRefGoogle Scholar
Madsen, J. and Hvelplund, T. 1985. Protein degradation in the rumen. A comparison between in vivo, nylon bag, in vitro and buffer measurements. Acta Agriculturae Scandinavica, suppl. 25, pp. 103–124.Google Scholar
Mehrez, A. Z., Ørskov, E. R. and Opstvedt, J. 1980. Processing factors affecting degradability of fish meal in the rumen. Journal of Animal Science 50: 737–744.CrossRefGoogle Scholar
Miller, E. L. 1982. Methods of assessing proteins for ruminants, including laboratory methods. In Protein contribution of feedstuffs for ruminants: application to feed formulation (ed. Miller, E. L., Pike, J. H. and Es, A. J. H. Van), pp. 18–35. Butterworths, London.CrossRefGoogle Scholar
Mohamed, O. E. and Smith, R. H. 1977. Measurement of protein degradation in the rumen. Proceedings of the Nutrition Society 36:152A (abstr.)Google ScholarPubMed
Mould, F. L., Ørskov, E. R. and Mann, S. O. 1983/1984. Associative effects of mixed feeds. 1. Effects of type and level of supplementation and the influence of the rumen fluid pH on cellulolysis in vivo and dry matter digestion of various roughages. Animal Feed Science and Technology 10: 15–30.CrossRefGoogle Scholar
Ørskov, E. R. 1982. Protein nutrition in ruminants. Academic Press, London.Google Scholar
Ørskov, E. R., Hughes-Jones, M. and Elimam, M. E. 1983. Studies on degradation and outflow rate of protein supplements in the rumen of sheep and cattle. Livestock Production Science 10:17–24.CrossRefGoogle Scholar
Ørskov, E. R., Hughes-Jones, M. and McDonald, I. 1981. Degradability of protein supplements and utilization of undegraded protein by high-producing dairy cows. In Recent advances in animal nutrition — 1980 (ed. Haresign, W.), pp. 85–98. Butterworths, London.Google Scholar
Ørskov, E. R. and McDonald, I. 1979. The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage. Journal of Agricultural Science, Cambridge 92:499–503.CrossRefGoogle Scholar
Ørskov, E. R. and MacLeod, N. A. 1982. Validation and application of new principles of protein evaluation for ruminants. In Protein contribution of feedstuffs for ruminants: applications to feed formulation (ed. Miller, E. L., Pike, J. H. and Es, A. J. H. Van), pp. 76–85. Butterworths, London.CrossRefGoogle Scholar
Poncet, C., Gonzalez, J. and Michalet-Doreau, B. 1987. Effects du pourcentage de concentre de la ration et du niveau d'ingestion sur la vitesse de passage dans le rumen de differents types d'aliments chez le mouton. Reproduction, Nutrition and Developpement 27: 257–258.CrossRefGoogle Scholar
Poppi, D. P., Norton, B. W., Minson, D. J. and Hendricksen, R. E. 1980. The validity of critical size theory for particles leaving the rumen. Journal of Agricultural Science, Cambridge 94: 275–280.CrossRefGoogle Scholar
Steel, R. G. D. and Torrie, J. H. 1981. Principles and procedures of statistics. McGraw Hill, New York.Google Scholar
Stern, M. D., Ortega, M. E. and Satter, L. D. 1983. Retention time in rumen and degradation of protein supplements fed to lactating dairy cattle. Journal of Dairy Science 66:1264–1271.CrossRefGoogle ScholarPubMed
Tamminga, S. 1983. Recent advances in our knowledge on protein digestion and absorption in ruminants. In IVth international symposium on protein metabolism and nutrition, Clermont-Ferrand (France), pp. 263–287. Les colloques de l'INRA, no. 16.Google Scholar
Van der Honing, Y. and Alderman, G. 1988. Feed evaluation and nutritional requirements. 2. Ruminants. Livestock Production Science 19:217–278.CrossRefGoogle Scholar
Weakley, D. C., Stern, M. D. and Satter, L. D. 1983. Factors affecting disappearance of feedstuffs from bags suspended in the rumen. Journal of Animal Science 56:493–507.CrossRefGoogle ScholarPubMed