粗飼料または濃厚飼料給与がめん羊の血清および尿中無機物濃度ならびに血清酵素活性におよぼす影響〔濃厚飼料給与時の尿中無機物排泄-2-〕

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This experiment was conducted to clarify the effect of characteristics of feeds on the mineral (Ca, P and Mg) metabolism in sheep. Serum mineral levels, enzyme activities and urinary and fecal mineral excretion were compared in sheep fed the roughage only (orchard grass hay) and the high concentrate ration (3 parts of corn-soybean diet and one of orchard grass hay). Mineral intake of sheep fed the concentrate ration was equalized with the supplement of calcium carbonate and magnesium acetate to that of sheep fed the roughage. The blood pH and parameters of blood acidbase status were not affected by the rations used. Serum calcium levels of sheep fed the high concentrate ration tend to be lower than that of sheep fed the roughage only, but urinary excretion rate was very low and not affected by the rations. Serum inorganic phosphorus level of sheep fed the high concentrate ration was considerably higher than that of sheep fed the roughage only and urinary excretion rate was increased by the high concentrate ration. Serum magnesium level was little affected by rations. Urinary excretion rate of magnesium was extremely high compared with that of calcium and phosphorus and was much increased by the high concentrate ration. Fecal mineral excretion rate in sheep fed the high concentrate ration was apt to be lower than that of the roughage only. These results suggest that mineral absorption from digestive tract and urinary excretion of phosphorus and magnesium are increased by the feeding of high concentrate ration. Serum activities of ALP and LDH in sheep fed the high concentrate ration tend to be higher than that of the roughage only and it suggests that phosphorus metabolism and functions of digestive tract are affected by the feeding of high concentrate ration.
社団法人日本畜産学会の論文

粗飼料または濃厚飼料給与がめん羊の血清および尿中無機物濃度ならびに血清酵素活性におよぼす影響〔濃厚飼料給与時の尿中無機物排泄-2-〕

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