The quantitative contribution of Mediterranean trees and shrubs to milk production of lactating goats in the Judian mountains
1992
Kababia, D.
Feed intake at pasture was quantitiated, using 2 methods. The first method included the count of bites and the on-time simulating sampling of the vegetation eaten by the goats. The evaluation of feed intake was also derived from the amount of feces excreted by the goats, estimated after the goats were fed chrome-oxide as a tracer. In the second method, the basis of calculation was the in vitro dry matter digestibility of sampled materials. The goats were allotted to 2 nutritional treatments. They were either fed a high-protein (HP, 500 g of whole corn grain and 500 g of a soya concentrate 38 CP) or a medium-protein supplement in the milking parlour. Our calculations show that DMI by dairy goats from pasture amounts to 1.7-2.0 kg/d. lignified species, mainly common oak and cypress, represent 80 of DMI. In spite of its relatively low nutritional value, range vegetation accounted for 68 of feed in dairy goats at the peak of lactation. It seems that the selection ability of goats upgrade Mediterranean bushes and trees to valuable feedstuffs.
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