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Comparative digestibility and digesta flow kinetics in two breeds of sheep

Published online by Cambridge University Press:  05 November 2021

M.J. Ranilla ,
C. Valdés ,
F.J. Giráldez ,
M.D. Carro  and
S. López
M.J. Ranilla
Affiliation:
Departamento Production Animal I, Universidad de León, E-24071 León, Spain
C. Valdés
Affiliation:
Departamento Production Animal I, Universidad de León, E-24071 León, Spain
F.J. Giráldez
Affiliation:
, Estación Agricola Experimental, CSIC, Apartado 788, E-24080 León, Spain
M.D. Carro
Affiliation:
Departamento Production Animal I, Universidad de León, E-24071 León, Spain
S. López
Affiliation:
Departamento Production Animal I, Universidad de León, E-24071 León, Spain
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Extract

Recent studies carried out in cattle, sheep and goats have shown differences between both species and breeds of ruminants in digestive capacity, digesta flows and fermentation rates. Most of these differences are related to their feeding behaviour and digestive physiology and could affect digestive utilization of feeds. The aim of this work was to study the digestibility and digesta kinetics in the whole digestive tract in two breeds of sheep (Churra v. Merino).

Ten non-productive mature sheep (five Churra (mean LW= 44.3kg±3.20) and five Merino (mean LW= 46.7kg±2.22)) fitted with rumen cannulae were used in this study. Animals were fed once a day 1 kg of alfalfa hay (877 g DM/kg; 169 g CP/kg DM; 489 g NDF/kg DM).

Type
Sheep
Information
Proceedings of the British Society of Animal Science , Volume 1996 , March 1996 , pp. 171
Copyright
Copyright © The British Society of Animal Science 1996

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References

Grovum, W.L. and Williams, V.J. 1973. Rate of passage of digesta in sheep. 4. Passage of marker through the alimentary tract and the biological relevance of rate-constans derived from the changes in concentration of marker in faeces. British Journal of Nutrition 30: 313–329.10.1079/BJN19730036CrossRefGoogle ScholarPubMed