Influence of the method of conservation of lucerne on ruminal degradability. I. Dry matter
2001
Andueza, D. | Muñoz, F. | Pueyo, J. | Delgado, I. (Diputación General de Aragón, Zaragoza (Spain). Servicio de Investigación Agroalimentaria) | Roza, B. de la
The aim of this experiment was the evaluation of the rumen degradation of the dry matter of lucerne kept as hay or dehydrated. Samples from three alternate cuts and two phenological stages per cut were collected at a cultivated lucerne plot at Bujaraloz (Zaragoza) in 1998. Samples were submitted to a haymaking or dehydration process. Degradation kinetics of dry matter was determined by the nylon bag technique using three rams provided with a rumen cannula. The results obtained were adjusted to the curve y = A + B (1 - e-Ct). The effective degradability (ED) was calculated for a passage rate (k) of 3.7 per cent per h. Significant differences were obtained between cuts and phenological stages for the ED. However, no significant differences were obtained between both conservation methods for any parameter of the degradation kinetics and ED of dry matter
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