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題 名 | 以血液酮體檢測評估臺灣中部地區泌乳牛潛伏性酮症發生風險因子=Investigation of Risk Factors of Subclinical Ketosis in Dairy Cows in Central Taiwan by Measuring Ketone Body in Blood |
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作 者 | 蔡宜倫; 申國榮; 邱智賢; 王嘉蘭; 周崇熙; | 書刊名 | 臺灣獸醫學雜誌 |
卷 期 | 40B:S1 2014.03[民103.03] |
頁 次 | 頁46-52 |
分類號 | 437.39 |
關鍵詞 | 酮體; 酮症; 乳牛; 風險因子; 飼養管理; Ketone body; Ketosis; Dairy cows; Risk factors; Farm management; |
語 文 | 中文(Chinese) |
中文摘要 | 酮症(ketosis)為泌乳牛所好發的產媷相關代謝異常疾病,而潛伏性酮症雖然沒有臨床症狀,但仍有造成酪農 經濟損失與惡化成臨床性酮症的重大風險。本研究調查2011年10-12月臺灣中部地區泌乳牛場中泌乳牛分娩前後時 期血液中酮體的含量,並進一步分析造成牛隻發生潛伏性酮症的可能風險因子。從總採樣數228頭泌乳牛中,共收集 497筆分娩前後各期之測量數據,酮體量測時間點為分娩前一週、分娩後1-2週及分娩後3-4週。結果顯示酮體量測 範圍為0.31-3.73 mmol/L,以酮體值超過1.4 mmol/L將該牛隻判定為有潛伏性酮症之標準,則此區域泌乳牛會發生 潛伏性酮症的機率為23.2%。同時,相較於調查期間「皆沒有」發生潛伏性酮症牛群其娩後各期酮值無統計上之差 異,「曾發生過」潛伏性酮症的牛隻,其分娩後3-4週的酮值則會顯著較分娩後1-2週酮值高,表示有潛伏性酮症發 生風險時,酮值是可能持續上升的,需要早期處置,以降低酮症風險。在患病風險因子的探討上,除分娩此生理性風 險因子之外,其他如牛隻品系(娟姍牛與荷蘭牛)、牧場規模及牛舍活動空間,皆未構成統計上風險因子的成立要件, 但是在觀察酪農是否勤於更換泌乳牛陳舊飼料上,管理人員每日會注意草料新鮮度的牛群其產後一週的酮值(0.92 mmol/L) 會顯著(p<0.05) 低於沒有這樣管理要求的牛群(1.44 mmol/L)。此針對臺灣中部地區泌乳牛潛伏性酮症的風 險分析結果,希望讓臨床獸醫師了解處理潛伏性酮症的重要檢測時間點,同時了解牧場飼料管理的重要性。 |
英文摘要 | Ketosis is a metabolic disorder of dairy cows frequently occurring during parturition. Although lacking of clinical symptoms, having subclinical ketosis possesses the potential to cause great economic loss and may turn into clinical ketosis. In this current study, blood ketone bodies from cows prior or post parturition were examined for possible risk factors of the disease. During October to December of 2011, a total of 497 measurements were obtained from 228 cows from eight different farms in Central Taiwan. The three time points of measurement included one week prior to parturition, 1-2 week post parturition, and 3-4 week post parturition. The blood ketone body levels ranged from 0.31 to 3.73 mmol/L and showed a 23.2% incidence rate of subclinical ketosis according to the 1.40 mmol/L disease determination criteria. There was no difference between the 1-2 week post parturition and 3-4 week post parturition ketone body titers from cows that „never‰ had subclinical ketosis. In contrast, there was a statistical increase in 3-4 weeks post parturition compared to 1-2 weeks post parturition in the cows that had the disorder at least once before. This increase in ketone body titers indicates that an early treatment should be carried out for these cows with high potential disease risk. Excluding parturition, an inevitable physical risk factor, none of other risk factors including breed (Holsteins and Jerseys), farm size, herd density were concluded as related to disease frequency in this study. However, when farms with better management in which the farmer replaced the feed more frequently, the ketone body titer at 1-week post parturition showed a statistical (p<0.05) decrease (0.92 vs. 1.44 mmol/L) from farms that did not replace the feed as regularly. This indicates the importance of farm management. In conclusion, this study reminds the veterinarians the importance of early measurement and treatment of subclinical ketosis, as well as the necessity of feed management on the farm. |
本系統中英文摘要資訊取自各篇刊載內容。