Quantitative Studies of Digestion in the Reticulo-Rumen I. Total removal and return of digesta for quantitative sampling in studies of digestion in the reticulo-rumen of cattle


C.S.W. Reid

Plant Chemistry Division, D.S.I.R., Palmerston North

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Proceedings of the New Zealand Society of Animal Production. 1965, 25: 65-84

Quantitative sampling of the contents of the reticulo-rumen of cattle by total removal through a fistula, weighing, mixing, sampling and return of the digesta is described. An experiment in which a fasting cow was given a single feed of cut, fresh red clover and sampled in that manner before and after feeding and 3, 6,12 and 22 hours later, is described and the results given, including the wet weight of and the dry matter, Na, K and VFA contents of the digesta, as well as the estimated rates of net inflow of water to the reticulo-rumen, and of outflow to the omasum. The effects of removal and return of the digesta on the animals and on the breakdown and passage of food, are briefly discussed, together with problems of sampling.

Keywords: NZSAPAB;


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