頁籤選單縮合
題 名 | 仔豬早期離乳試驗=A Experiment on Early Weaning of Berkshire Baby Pigs |
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作 者 | 林誠華; 周德政; | 書刊名 | 中華農學會報 |
卷 期 | 20 民46.12 |
頁 次 | 頁68-74 |
關鍵詞 | 仔豬; 早期離乳; |
語 文 | 中文(Chinese) |
中文摘要 | 仔豬早期離乳,由盤克夏母豬十胎四十九頭仔豬,自生後第五、六週,開始平均重在六公斤以上者,參加試驗,供仔豬喂以乾料,至年齡達第八週為止,所得結果摘要如次: 1. 仔豬體重:早期離乳仔豬,至第八週(56天)時平均體重達9.005 kg。試驗期間,平均每日每頭增重為146gm。 2. 飼料中之粗蛋白質含量:早期離乳之仔豬,其飼料中應含之粗蛋白質量,經自由則十組測定結果為19~20%之間。 3. 母豬受胎率:早期離乳母豬之受胎率,在離乳後30天內之受胎率可以提高22~30%。 4. 增重之經濟價值:早期離乳養至生後第八週為止,飼養期中,增重一公斤需飼料2.4公斤,如以仔豬售價計,則飼料費應做生產成本58%。 5. 仔豬育成率:供試仔豬在試驗期間,無仔豬死亡,而所有仔豬在四次試驗中,發育均勻整齊,並無大小懸殊個體存在。 |
英文摘要 | In common practice baby pigs usually wean at the end of two months after their birth. If they are weaned earlier and feed on the right kind of rations good care and management, they will gain in average a better growth; fewer runts; their mortality could be reduced. Also the conception rate of sows will be increased, and they will farrow more than two litters a year. This experiment was therefore designed to find out the practicability of early weaning in baby pigs less than a fewer of eight weeks of age. Ten litters of 49 Berkshire baby pigs weaned at from five to six weeks after farrowing, and with an average initial weight of 6kg each were used in four experiments for early weaning tests. They were fed in drylots and the experiments were ended when baby pigs reached an age of eight weeks The results obtained are summarized as follows: 1. Early weaning pigs averaged 9.005kg of body weight when they become eight weeks old, and their average daily gain in body weight was 146gm. 2. The protein content of free-choice feeding lots used as determining the level of protein requirement for the early weaning pigs had been found to be approximately between 19-20 per cent. 3. After 30 days of weaning the conception rate of early weaning sows were increased between 22-30 per cent. 4. The amounts of feed consumed per kilogram gain in body weight was 2.4 kg. The feed costs per kilogram in body weight was N.T.$8.71, which was about 58 per cent of weaning pig's marketing price. 5. There were practically no death losses of pigs during the experiments; in other words, the mortality rate of early weaning pigs was rather very low, really nil. |
本系統中英文摘要資訊取自各篇刊載內容。