The Nutritive Value of East African Hay

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French, M. H.
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I. Data are presented on the composition, digestibility, and feeding value of ten grass hays, produced in the Central Province of Tanganyika (annual rainfall 20-23 inches). 2. The crude-protein contents of the dry matter varied from 3'7 to 9'2 per cent and the crude-fibre figures ranged from 32'5 to 43'5 per cent. In the hays from the more mature herbage, the digestibility of the crude-fibre fraction exceeded that of the nitrogen-free extractives. 3. The stemmy and less leafy Chloris gayana and Andropogon caricosus hays were considerably inferior to the other species in digestible crude protein and starch equivalent. The starch-equivalent values of the other species (3 1'7 to 39'8 per cent.) were similar to the energy values of medium-good quality United Kingdom hays but the contents of digestible crude protein (3 '2 to 5'7 per cent.) were generally slightly lower. Cynodon plectostachyum first-cut hay contained the highest percentage of digestible crude protein but the aftermath hay of this species had a starch-equivalent value of only 31'7 per cent. The feeding values of the immature local Panicum maximum and Pennesetum purpureum hays and the hay from the exotic Digitaria pentzii were very similar, and intermediate between that of the first-cut C. plectostachyum and the two types of Cenchrus ciliaris.
Veterinary Research, 24 (93), p. 53-60