(6(4):7-10)UREA AS A FEED FOR DAIRY COW

1. 尿素飼乳牛110日的結果，泌乳量仍能惟待原狀，且校對照區為優，兩區的體重亦有增加。如有適量的炭水化合物飼料補充，尿素可以代替大豆餅為乳牛的蛋白質飼料。 2. 尿素的適口性不佳，故尿素區濃厚飼料的採食量較少，但繼續餵至60~70日時，牛即習慣其味，加入少量糖蜜，有助於適口性的改善。 3. 乳牛尿素區的濃厚飼料較對照區節省32.8%，在本試驗中，尿素區的尿素3%及甘藷簽25%，可以代替對照區的大豆餅10%及麩皮18%，以價格言，前者僅佔後者的42.8%，即前者較為經濟2倍多。 4．尿素青儲草可使乳牛的泌乳量增加。 1. The test was carried out for 110 days. The concentrates for the urea lot contained 3% of urea. 2. In this test, 3% urea and 25% dried sweet potato chops substituted 10% soybean cake and 18% wheat bran. The cost of the former was only 42.8% of the latter. 3. The milk production of the urea lot was greater than that of the soybean cake lot. Urea can take place of soybean cake as a protein supplement for cow feeding. 4. Urea is not palatable, but when it has been fed for 60-70 days, the cows are accustomed to its taste. A little molasses added to the feeds containing urea can help to improve the palatability. 5. Silage containing urea has the effect of increasing the milk production of the cow