含抗生素廢棄乳飼餵仔牛試驗

本試驗為利用抗生素治療泌乳牛後之廢棄乳（不含臨床性乳房炎乳）飼養仔牛試驗，仔牛分娩4日內餵初乳，而後逢機分為加甲醛廢棄乳組（添加 0.05％（v/v）甲醛，置室溫2日後移入3℃冰箱冷藏30日）、新鮮廢棄乳組（3℃冰箱冷藏3日）及對照之代用乳組，仔牛於8週齡時斷乳，飼養至3月齡止。三組試驗頭數分別為11、6與11頭，在增重方面，餵新鮮廢棄乳組仔牛之增重與代用乳組相近，而餵含甲醛廢棄乳組仔牛之增重較差，與荷蘭仔牛標準體重比較，餵含甲醛廢棄乳組於8週齡時之平均體重稍低，但於3月齡時可達標準體重。在體型方面，8週齡及3月齡時體高、坐骨高、胸圍、前幅、胸幅、髖幅及管圍等均隨仔牛年齡增加而上升，但新鮮廢棄乳組、含甲醛廢棄乳組與代用乳組間均無顯著差異，顯示可利用新鮮廢棄乳或含甲醛廢棄乳飼餵仔牛，唯出生體重低於35 kg仔牛飼餵含甲醛廢棄乳之食慾較差且易下痢，試驗期間飼餵含甲醛廢棄乳組有4頭發生下痢，但無其他疾病問題。

關鍵字

含抗生素廢棄乳；飼餵仔牛；仔牛生長與體型；乳品質

並列摘要

The objective of this experiment was to determine whether waste milk from cows treated with antibiotics for disorders (exclude clinical mastitis) could be fed safely to young calves. Calves were fed colostrum for 4 days, and randomly allocated into three groups. On the trial, calves in the control group were fed milk replacer, one group was fed fresh waste milk which stored at 3°C for 3 days, and the other group was fed waste milk to which 0.05% (v/v) formaldehyde had been added prior to storage at room temperature for two days and then stored at 4°C for 30 days. Milk was fed to 8 weeks of age. The experimental period was from birth to 3 months of age. Number of calves fromformaldehyde treated waste milk, fresh waste milk and milk replacer were 11, 6 and 11, respectively. Average weight gain of calves fed fresh waste milk was similar to control group of calves, and average of weight gain of calves fed formaldehyde treated waste milk was lower than the former two group. However, average weight of calves at 3 months of age of these three groups can reach the standard of Holstein calves. Stature, pin bone height, chest girth, shoulder width, chest width, thurl width and shank circumference of calves of three groups were increased with age, but have no significant difference at 8 weeks or 3 months of age among the three groups. The results showed that calves fed fresh waste milk or formaldehyde treated waste milk can grow normally to 3 months of age. Calves fed formaldehyde treated waste milk tended to reject it initially, especially in the calves with birth weight below 35 kgs. There were 4 calves fed formaldehyde treated waste milk tended to suffer mild scours during the test, and other health problems were scarcely observed.

並列關鍵字

Antibiotic residual milk ； Feeding young calves ； Growth and body measurement of young calves ； Milk quality

主題瀏覽