Prediction of voluntary intake, apparent digestibility and digestible dry-matter intake of hays by sheep from rumen degradation characteristics, ruminal outflow rate and rumen fill
1997
Nakashima, Y. (Iwate Univ., Morioka (Japan). Faculty of Agriculture) | Nakayama, I.
Nine hays with neutral-detergent fibre (NDF) an acid-detergent fibre (ADF) concentrations ranging from 462 to 739 and from 319 to 447 gkg(-1) dry-matter (DM) respectively, were used to assess the possibility of predicting voluntary DM intake (DMI), apparent DM digestibility in vivo (DMD) and digestible DM intake (DDMI) by sheep from the rumen degradation characteristics represented as a rate and potential extent of degradation of the hays, outflow rate (k1) from the rumen and rumen fill (Rf). Three sheep were used repeatedly for each hay in all the measurements. The degradation characteristics were measured by incubating samples in polyester bags in the rumen and the water soluble fraction (A) was measured
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