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題 名 | 生長豬投予卡巴得後,血中卡巴得、類胰島素生長因子、胰島素及部份血液生化值的變化=Changes of Content of Carbadox, IGF-I, Insulin, and Other Blood Clinical Measurements in Growing Pigs After Administration of Carbadox |
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作 者 | 楊天樹; 李安興; 吳福明; | 書刊名 | 臺灣畜牧獸醫學會會報 |
卷 期 | 67:1 1997.03[民86.03] |
頁 次 | 頁31-37 |
分類號 | 437.23 |
關鍵詞 | 卡巴得; 生長豬; 胰島素; 血液生化; Carbadox; Growing pigs; IGF-I; Insulin; Blood chemistry; |
語 文 | 中文(Chinese) |
中文摘要 | 卡巴得(Carbodox)常添加於保育豬飼料中,以防止下痢和促進生長。本研究以不同 方式投與該藥物於生長豬,並測定隨後血中卡巴得濃度的變化,以及對類胰島生長因子第一 型 (IGF-I)、胰島素及部分血液生化值的影響。試驗 1 先選藍瑞斯閹公豬 3 頭。 均重 42 公斤,自耳靜脈導管以 120 g/kg 體重劑量注入卡巴得,隨後連續採血 8 小時。試驗 2 選 同類均重 54 公斤豬隻 10 頭,其中 5 頭在空腹狀況下自口以 4 mg/kg 體重劑量灌入卡巴 得,隨後從耳靜脈導管採血 8 小時;另外 5 頭作為對照組。試驗 3 亦取同類豬隻均重 29 公斤 6 頭,以任食方式餵給含 50 mg/kg (50 ppm) 卡巴得飼料 35 日,然後停藥 10 日, 在此期間內每星期採血,包括停藥後 3 日和 10 日。試驗 1 的結果顯示,注入血液中的卡 巴得,以平均每小時 13.7 %的比例清除。試驗 2 空腹口服卡巴得後 2 小時,血中該藥濃 度達一高點後便以每小時 15.4 %比例下降,至服後 8 小時仍未見呈和緩趨勢。 口服後 3 小時血中之 IGF-I 濃度與對照組無異; 但胰島素則顯著 (p<0.05) 較低, 血糖則顯著 (p<0.05) 較高;血蛋白則略高 (p<0.1),其他血液化學分析則相似。試驗 3 豬隻從飼料攝 取卡巴得 35 日其間, 血中卡巴得濃度介於 95 至 200 ng/ml, 停藥後 10 日與停藥後 3 日之濃度 (58 ng/ml) 無差異,表示並無試驗 1 和試驗 2 單一劑量處理後可迅速清除趨勢 。 停藥 3 日後血中肝功能酵素活性與對照組無異。綜合以上各試驗之結果,可知生長豬血 中的卡巴得可迅速地以每小時 14 %至 15 %速率被清除; 然而,若持續餵飼 5 星期卡巴 得,則藥劑聚積體內,即使停藥 10 日也無法有效降低血中卡巴得濃度。卡巴得可能直接參 與醣類代謝的過程以促進生長,其作用與 IGF-I 的濃度無關。 |
英文摘要 | Carbadox is commonly being added to the feed for weaner pigs to prevent diarrhea and to promote growth. The present study is designed to investigate the changes of blood carbadox content after different means of administration of the chemical in growing pigs. The effect of carbadox on insulin-like growth factor-I (IGF-I) and insulin and some measurements of blood clinical chemistry were also determined. Experiment 1 was conducted on 3 barrows by intravenous injection of carbadox (120 μ g /kg). The blood carbadox concentration decreased sharply after injection in an exponential pattern with a mean rate of 13.7% per hour. In experimient 2, fasting barrows (n=5) received carbadox (4 mg/kg) orally; an additional 5 pigs were used as control animals. The blood carbadox rose and reached a peak 2h after oral administration. Carbadox content then declined continuously at a rate of 13.7% per hour to 8h after dosing. Comparing blood samples taken 3h after carbadox administration from treated and control pigs, it was observed that IGF-I content was similar, insulin was significantly lower (p<0.05), glucose was significantly higher (p<0.05), and total protein was slightly (P<0.1) higher than those of controls. No significant differences were found between carbadox treated pigs and controls in other blood clinical measurements. In experiment 3, plasma carbadox varied between 95 to 200 ng/ml during 35 dyas of dosing. It decreased to 58 ng/ml on the third day of carbadox withdrawal. Carbadox in blood taken 10 days after withdrawal was similar to that taken on the third day. Liver function, indicated by clinical profile of blood sampled 3 days after withdrawal, was unaffected. It is concluded that, in growing pigs, although circulating carbadox can be eliminated quickly at a rate of 14% to 15% per hour, the chemical seems to accumulate in tissues so that even render 10 days, withdrawal can not reduce blood content effectively. Carbadox may be involved in intermediary metabolism in promoting growth and not through affecting IGF-I concentration. |
本系統中英文摘要資訊取自各篇刊載內容。