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題名 | 高銅飼糧對臺灣土雞消化道之影響=The Effect of High Dietary Copper on the GI Tract in Taiwan Country Chickens |
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作者 | 陳國隆; 蘇耀期; 吳建平; | 書刊名 | 中國畜牧學會會誌 |
卷期 | 28:2 1999.06[民88.06] |
頁次 | 頁145-155 |
分類號 | 437.714 |
關鍵詞 | 臺灣土雞; 生長性狀; 消化道; 形態學; 血液性狀; Taiwan country chicken; Performance; GI tract; Morphology; Blood traits; |
語文 | 中文(Chinese) |
中文摘要 | 本試驗目的在探討高銅飼糧對3~6週齡臺灣土雞消化道表面組織結構,小腸型態 學變化及血液性狀之影響。以3週齡臺灣土雞DL2品系72隻,逢機分置於飼糧添加銅0、100、 250及500 mg/kg之處理組中,每處理三重覆,試驗期間3週。結果顯示:飼糧添加銅至250 mg/kg對其生長性狀、消化道表面、小腸組織及型態與血液性狀並無顯著差異(P>0.05)。添 加至500 mg/kg時增重及飼料效率顯著較差(P<0.05)。血液性狀方面:血糖濃度顯著降低 (P<0.05),肌酸激□、天門冬酸轉胺□及乳酸脫氫□活性顯著升高(P<0.05),消化道中砂囊 受損,小腸中十二指腸、空腸及迴腸絨毛高度顯著降低(P<0.05),經由掃描式電子顯微鏡觀 察,發現十二指腸絨毛表面受損。 |
英文摘要 | The purpose of this study was to investigate the effects of high dietary copper on the structure of the GI tract surface, the changes of the intestinal morphology and the blood traits of the 3-6 week-old Taiwan country chickens. In this trial, 72 3-week-old Taiwan country chickens DL2 were randomly assigned to the treatments with 0, 100, 250 and 500 mg/kg dietary copper supplement. The experiment lasted for 3 weeks with three replicates for each treament. The results indicated that the effects of 250 mg/kg dietary copper supplementation on the performance, the surface of the GI tract, the intestinal morphology and histology, or the blood traits was not significant (P>0.05). Whereas, weight gain and feed efficiency significantly decreased (P<0.05) when the dietary copper supplementation was increased up to 500 mg/kg. Besides, the blood glucose concentration significantly decreased (P<0.05). The aspartate aminotransferase, alanine aminotransferase and lactate dehydrogenase activities significantly increased (P<0.05). The damaged gizzard, and the depressed villous heights of the duodenum, jejunum and ileum were found to be significant (P<0.05). The damage of duodenal villous surface was detected through the scanning electronic microscope. |
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