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頁籤選單縮合
題名 | 飼糧中銅含量對豬隻生長、組織殘留及排泄物含銅量之影響= |
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作者 | 李應煌; 余裴文; |
期刊 | 中華農學會報 |
出版日期 | 19900300 |
卷期 | 149 1990.03[民79.03] |
頁次 | 頁94-102 |
分類號 | 437.654 |
語文 | chi |
關鍵詞 | 生長; 含量; 排泄物; 組織; 殘留; 飼糧; 銅; 豬隻; |
中文摘要 | 以40隻平均體重達11公斤的雜交仔豬,進行為期六個月的試驗,來探討飼糧中不同銅含量對生長,血紅素含量,肌肉、腎臟、糞便及糞尿液中的銅含量以及血漿和肝中的銅鐵含量的影響。 當豬隻飼糧中添加250ppm銅時,在保育期豬隻之增重高於其他各添加組並且每單位增重需要較少的飼料,飼料利用效率較佳。但對增重的影響並不能持續到生長期、肥育期以及整個生長期。 肝臟及腎臟中的銅含量隨著銅劑量的提高而增加,而肝中鐵含量卻降低,但血漿及肌肉中的銅含量似乎不受影響。以玉米-大豆粕為主實用飼糧中添加325ppm銅顯著地(p<0.05)降低血紅素含量以及血漿中游離鐵量,然而未發現任何豬隻表現出銅中毒。 飼糧中添加銅可極顯著(p<0.01)地增加豬隻的銅排泄量,當飼糧中添加100、175、250及325ppm銅時,糞中銅含量幾增為對照組的7、10、16以及20倍之多,而糞尿中的銅含量亦有相同的增加趨勢。 |
英文摘要 | Forty cross-bred pigs averaging 11 kg of body weight were used in a 6-month trial to determine the effect of dietary copper levels on growth, hemoglobin, copper levels in muscle, kidney, feces and urine-feces, and copper and iron levels I plasma and liver. Pigs fed a diet supplemented with 250 ppm copper gained faster and required less feed per unit of gain during starter period as compared with pigs fed other diets. However, it did not consistently affect the rate of body weight gain during the grower, finisher and overall period. The level of copper in the kidney and liver increased while the level of iron decreased, but plasma and muscle copper levels were similar for pigs fed high copper diets. The addition of 325 ppm of copper to a balanced corn-soybean meal diet significantly (P<0.05) decreased the hemoglobin level and the free iron level in plasma, although no visual symptoms of copper toxicity were observed in any of the pigs. The amounts of copper excreted were significantly increased (P<0.01) by the addition of copper in the diets. The copper content in feces increased by approximately 7-, 10-, 16- and 20-fold, respectively, as cooper was supplemented at 100, 175, 250, and 325 ppm in the diets as copper sulfate. The same held true for copper levels in urine-feces. |
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