On the digestive coefficients of roughages in the Japanese polled breed of cattle

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  • 無角和種における粗飼料の消化率について
  • ムカク ワシュ ニ オケル ソシリョウ ノ ショウカリツ ニ ツイテ

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This experimeut was carried out to examine the digestibility of roughages in the Japanese polled breed of cattle. The authors compared a Japanese polled breed of cow with a Japanese black breed and a "Doppellender" cow in the digestion trial of roughages at 3 times.<br>Principal results were as follows;<br>(1) The Japanese polled breed shows higher digestility of roughages than both the Japanese black breed and the "Doppellender" cow, especially in the digestibility of the roughages of lower quality, <br>(2) When the quality of roughages is lower, the digestibility of it becomes lower too, but in such a case, there is smaller decrease of digestibility of each feed component in the Japanese polled breeed than in the "Doppellender" cow, <br>(3) Only in the digestibility of crude fat, the "Doppellender" cow shows a little higher figure than the Japanese polled breed.<br> In spite of this fact, the "Doppellender" cow seems to have little deposit of body fat. The authors intend to discuss on the connection of the fact above mentioned with the abnormal energy metabolism of the "Doppellender" cow.

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