Nutritive value of timothy hay and silage and prediction of digestible energy in horses
1998
Maeta, Y. (Hokkaido. Shintoku Animal Husbandry Experiment Station (Japan)) | Deguchi, K. | Tamura, T.
Experiment was carried out to measure digestibility and voluntary intake in horses of timothy hays and silages harvested at different times and to compare with digestibility and voluntary intake of hays and silages harvested on the same swards. The relationship between digestible energy (DE) content and chemical component of forages was ascertained to predict DE contents of hay and silage for horses. There was no difference between hay and silage harvested at the same time in digestibility, nutritive value and voluntary intake. Dry matter digestibility and nutritive value decreased with maturity advancement in both the first and second crop. In early varieties of timothy, DE content in the first crop harvested at the heading stage satisfied the DE maintenance requirement of in adult horses. A significant relationship was found between the digestible energy content and organic b fraction content. The calculated regression equation for these of factors was found to be Y = -0.038 x X + 4.38 (r=-0.898); Where Y is digestible energy content and X is organic b fraction content
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