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核心技术专利：CN118964589B侵权必究

核心技术专利：CN118964589B侵权必究

Stevenson M H, Unsworth E F

Br J Nutr. 1978 Nov;40(3):491-6. doi: 10.1079/bjn19780151.

Two groups of four 18-month-old ewes fitted with a rumen cannula and re-entrant cannulas in the proximal duodenum were fed on one of two diets based on varying proportions of dried-grass meal, ground straw and barley. 2. The apparent availability, retention and amount of the mineral reaching the proximal duodenum were measured for calcium, phosphorus, magnesium, copper and zinc. Significant differences were found between diets for Ca only. Net absorption of Mg occurred before the proximal duodenum and also, lower down the alimentary tract. Marked increases were observed in the amount of Cu, Zn and P reaching the proximal duodenum relative to that ingested.

两组四只18月龄的母羊，安装有瘤胃瘘管和十二指肠近端再入式瘘管，以两种不同比例的干草粉、粉碎秸秆和大麦为基础的两种日粮之一进行饲喂。2. 测定了钙、磷、镁、铜和锌在到达十二指肠近端时的表观利用率、留存率和含量。仅在日粮中钙的含量上发现了显著差异。镁的净吸收在十二指肠近端之前以及消化道更下游的部位发生。相对于摄入量，到达十二指肠近端的铜、锌和磷的含量显著增加。

Stevenson M H, Unsworth E F

Br J Nutr. 1978 Nov;40(3):491-6. doi: 10.1079/bjn19780151.

Two groups of four 18-month-old ewes fitted with a rumen cannula and re-entrant cannulas in the proximal duodenum were fed on one of two diets based on varying proportions of dried-grass meal, ground straw and barley. 2. The apparent availability, retention and amount of the mineral reaching the proximal duodenum were measured for calcium, phosphorus, magnesium, copper and zinc. Significant differences were found between diets for Ca only. Net absorption of Mg occurred before the proximal duodenum and also, lower down the alimentary tract. Marked increases were observed in the amount of Cu, Zn and P reaching the proximal duodenum relative to that ingested.

两组四只18月龄的母羊，安装有瘤胃瘘管和十二指肠近端再入式瘘管，以两种不同比例的干草粉、粉碎秸秆和大麦为基础的两种日粮之一进行饲喂。2. 测定了钙、磷、镁、铜和锌在到达十二指肠近端时的表观利用率、留存率和含量。仅在日粮中钙的含量上发现了显著差异。镁的净吸收在十二指肠近端之前以及消化道更下游的部位发生。相对于摄入量，到达十二指肠近端的铜、锌和磷的含量显著增加。