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Animal Breeding and Genetics
Asian-Australasian Journal of Animal Sciences 2002;15(5): 643-649.
DOI: https://doi.org/10.5713/ajas.2002.643    Published online January 1, 2002.
Effect of Agro-ecological Zones, Farm Category and Season on Feeds and Feeding of Large Ruminants in Rural Bangladesh
M. R. Islam, M. M. Rahman, M. Mahbubur Rahman, M. A. Zaman
Availability of feeds and fodder and amount of their intake by large ruminants in eight different agro-ecological zones (AEZ) of Bangladesh were recorded over a year. Roughages such as straw, naturally grown green grass, water hyacinth, tree leaves, legumes and sugarcane tops were the major feedstuffs fed to the large ruminants. Amount of intake of these ingredients differed (p< 0.01) across AEZ studied, but did not differ across seasons or farmers'''' categories (p>0.05) except for green grasses (p<0.01). Byproduct concentrates offered to animals in the studied areas were rice bran, wheat bran and different oil cakes. The amount of intake of concentrates by the animals also differed (p<0.01) across AEZs, but did not differ across seasons or farmers'''' categories (p>0.05), except for rice bran and wheat bran which differed between season and farm category, and season respectively (p<0.01). The large standard errors of mean indicate that there are wide variations in intake of roughages and concentrates across AEZ''''s, seasons and farmers'''' categories and even across days. This further indicates that the feeding practices of large ruminants are largely heterogeneous. In addition to feeding roughage and concentrates, the animals were allowed to graze for six hours a day. Grazing hours also differed (p<0.01) across AEZ, but not by farmers'''' categories or seasons.
Keywords: Ruminants; Feeds; Roughage; Concentrate; Grazing
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