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Studies on pH, number of protozoa and microbial ATP concentrations in rumen-incubated nylon bags with different pore sizes

Published online by Cambridge University Press:  27 March 2009

J. E. Lindberg ,
A. Kaspersson  and
P. Ciszuk
J. E. Lindberg
Affiliation:
Department of Animal Nutrition
A. Kaspersson
Affiliation:
Department of Microbiology, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden
P. Ciszuk
Affiliation:
Department of Animal Nutrition
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Extract

A number of factors affect predictions of rumen degradability of feedingstuffs when using the in sacco technique (Lindberg, 1983). One factor which exerts a great influence is the bag cloth aperture (Lindberg & Knutson, 1981; Lindberg & Varvikko, 1982). Without doubt part of the difference in degradation between pore sizes can be explained by differences in particulate matter losses (Lindberg & Knutsson, 1981; Lindberg & Varvikko, 1982). It has, however, also been suggested that the differences between pore sizes are due to the combined effect of differences in liquid exchange between the bags and the rumen contents and on the selection of microbes entering the bags (Lindberg & Varvikko, 1982).

Type
Short Notes
Information
The Journal of Agricultural Science , Volume 102 , Issue 2 , April 1984 , pp. 501 - 504
Copyright
Copyright © Cambridge University Press 1984

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References

Boyne, A. W., Eadie, J. M. & Raitt, K. (1957). The development and testing of a method of counting rumen ciliate protozoa. Journal of General Microbiology 17, 414–423.CrossRefGoogle ScholarPubMed
Church, D. C. (1975). Digestive Physiology and Nutrition of Ruminants, vol. 1. Corvallis, Oregon: O and B Books.Google Scholar
Forsberg, C. W. & Lam, K. (1977). Use of adenosine 5′-triphosphate as an indicator of the microbiota biomass in rumen contents. Applied Environmental Microbiology 33, 528–537.CrossRefGoogle ScholarPubMed
Hobson, P. N. & Summers, R. (1972). ATP pool and growth yield in Selenomonas ruminantium. Journal of General Microbiology 70, 351–360.CrossRefGoogle Scholar
Hungate, R. E. (1966). The Rumen and its Microbes. New York: Academic Press.Google Scholar
Joany, J. P. & Senaud, J. (1979). Role of rumen protozoa in the digestion of food cellulosic materials. Annales de Recherches Veterinaires 10 (2), 261–263.Google Scholar
Lindberg, J. E. (1983). Factors affecting predictions of rumen degradability using the nylon bag (in sacco) technique and a comparison between in vivo and in sacco degradability measurements. Swedish University of Agricultural Sciences, Department of Animal Nutrition Report 59 (dissertation).Google Scholar
Lindberg, J. E., Clason, C., Ciszuk, P. & Den Braver, E. (1982). Buffer-soluble and short-term in sacco degradable crude protein in relation to ruminal ammonia concentration in sheep. Swedish Journal of Agricultural Research 12, 77–82.Google Scholar
Lindberg, J. E. & Knutsson, P. G. (1981). Effect of bag pore size on the loss of participate matter and on the degradation of cell wall fibre. Agriculture and Environment 6, 171–182.CrossRefGoogle Scholar
Lindberg, J. E. & Varvikko, T. (1982). The effect of bag pore size on the ruminal degradation of dry matter, nitrogenous compounds and cell walls in nylon bags. Swedish Journal of Agricultural Research 12, 163–171.Google Scholar
Michalowski, T. (1975). Effect of different diets on the diurnal concentrations of ciliate protozoa in the rumen of water buffalo. Journal of Agricultural Science, Cambridge 85, 145–150.CrossRefGoogle Scholar
Müller, R. & Kirchner, I. (1969). Metodisohe beiträge zur Bestimmung der Wasserstoffionen-konzentration und der Redoxpotentials im Panseninhalt des Rindes in vitro und in vivo. I. Miteilung. Zeitschrift für Tierernährung, Tierphysiologie und Futtermittelkunde 25, 146–156.CrossRefGoogle Scholar
Snedecor, G. W. & Cochran, W. G. (1973). Statistical Methods. Ames, Iowa: The Iowa State University Press.Google Scholar