Changes in some chemical constituents of stored grain and animal feed In two provinces in Saudi Arabia
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Changes in total acidity, total carbohydrates, reducing sugars, starch, total protein, ether soluble fraction, sodium, potassium, calcium, magnesium, total phosphorus, ash, dry and wet gluten, crude fibres and specific gravity of wheat and maize grains, and of wheat bran, during storage, were carried out. Commodities used were stored in bins, or in general stores, in Riyadh and Dammam provinces, Saudi Arabia. In each of 2 storing seasons, 1987 and 1988, samples of commodities were taken periodically at 6 different periods of storage. Grains were taken from 2-3 heights inside bins. Four linear models were suggested, each included similar conditions in one or both provinces, to make the effects of 5 factors studies (province, type of commodity, height inside bin, season, and period of storage) estimable.' Changes in the chemical constituents of grain and animal feed used were found to be affected differently by these factors.