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題名 | 牛飼糧營養成分及瘤胃液性狀與蹄葉炎之關係 |
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作者 | 劉世賢; 劉炳燦; 馮翰鵬; 陳國祥; 黃華雲; 顏朝洲; | 書刊名 | 國立屏東技術學院學報 |
卷期 | 4 1995.06[民84.06] |
頁次 | 頁279-285 |
分類號 | 437.3 |
關鍵詞 | 牛; 飼糧; 瘤胃液; 蹄葉炎; |
語文 | 中文(Chinese) |
中文摘要 | 就本省南部4家肉牛場進行牛蹄葉炎發生率及病因探討,發現蹄葉炎之發生率,於 陽性( 10.0% )與陰性( 0.0% )場間及發生場之雌性( 14.6% )與雄性(6.6%)牛隻間 均呈極顯著性(P<0.01)差異。分析各場牛隻日糧得知,發生蹄葉炎牛場日糧之碳水化合物 百分比、 總可消化營養分百分比、碳水化合物 / 粗蛋白質比值、中洗纖維百分比及中洗纖 維 / 酸洗纖維比值皆明顯高於未發生場, 而粗蛋白質百分比及酸洗纖維百分比則低於未發 生場。由蹄葉炎發生場採取瘤胃液檢查發現蹄葉炎牛瘤胃液之 pH 值顯著低於正常牛 ( 5.69 VS 6.45,P<0.01 ),其甲基藍還原時間及亞硝酸鹽還原時間亦均較正常牛 者長(分別為 2.72 分 VS 1.53 分,P<0.01 及 29.13 分 VS 20.10 分,P<0.05), 其細菌數則顯著高於正常牛者( 5.6 × 10 �m CFU/ml VS 2.8 × 10 �m CFU/ml, P<0.01 ),但其纖毛蟲數及黴菌數則無顯著差異。日糧營養分的不均衡,可改變瘤胃環境導致瘤胃 微生物相變比,造成不正常的細菌代謝產物大量產生,這些產物可經由血液流到肢端,造成 蹄葉炎之跛腳症狀。 |
英文摘要 | The morbidity and etiology of bovine laminitis of 4 beef farms in the southern Taiwan were studied. There were very significant differences of among occurence and non-occurence rate of the 4 farms (10.03 vs. 1.35, 0.0 and 0.0%, P<0.01). The incidence of female beef in occurence farm were more significantly than those of males (14.6 vs. 6.57% P< 0.01 ). From the analysis of the ration, carbohydrates (CHO%)、 total digestive nutrition (TDN%)calorie protein ratio (CPR)、neutral detergent fiber (NDF%) and neutral detergent fiber/acid detergent fiber ratio (NDF/ADF) in the occurred farm were higher than those of normal farms. However, the crude protein (CP%) and acid detergent fiber (ADF%) of the former were adversely lower than those of latter. In the serve farm, ruminal fluid of the cattle were also analyzed. Ruminal pH value of the cattle which had suffered from laminitis was lower than normal individuales significantly (5.69 vs 6.45, P<0.01) . The methylene and nitrite reduction time were also significally longer than the normal cattle (2.72 vs 1.53 min.,P<0.01 & 29.13 vs 20.10min., P<0.05). On the other hand, the count of the ruminal bateria flora in the cattle which had laminitis was significally higher than normal ones (5.6 × 10 �m CFU/ml vs 2.8 × 10 �m CFU/ml, P<0.01), but the protoza and fungi counts showed no difference. The apporch etiology of bovine laminitis form the above results may be primarily come from the ration imbalance, which lead to the change of ruminal environment and its flora. The level of metabolites of the abnormal bacteria increase and trasport to the lambs by blood circulation. Clinical signs of the laminitis, ie. lambness、pain etc., occur finally. |
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