Studies on feed composition of feedstuffs in Thailand
Duangsmorn Sinchermsiri | Ankana Hanbunchong (Kasetsart University, Bangkok (Thailand). Faculty of Agriculture. Dept. of Animal Science)
Various feedstuff samples were romdomly collected from Animal Science Department's feed silo, private farms, commercial feed companies, including several feed factories in Chonburi, Rayong, Songkhla and Krabi Provinces. All samples were analyzed for nutrients composition using proximate analysis and for minerals. The analyzed showed that the nutrient composition in various feedstuffs varied considerably, Factors affecting nutritives values may be to. 1. For cerial grains eg. corn, sorghum etc, variation may caused by genetic variation, factors related to planting and harvesting methods, seed quality, quantities of plant residual, earth and sand contaminated and storage procedure. 2. For feedstuff from parts of the feed plants eg. cassava meal, leucaena leaves meal the variation depends on the quantities of residual plant parts and the amount of earth and sand contamination. 3. For feedstuff from factories eg. fish meal or residual surplus (such as rice mill by-products, oil seed meal, mung bean meal, shrimp meal etc.), the nutritive values may depend on qualities of raw materials and process of production. Besides, the adulteration is an important factor for variation in nutrient composition among feedstuff studied.
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