摘要
本研究对上海地区9个牧场奶牛产后低钙血症和酮病的发病率进行了调查,结果表明:奶牛产后12 h内的低钙血症发病率平均为86.1%,血钙平均浓度为(1.82±0.02)mmol/L,产后3~7 d低钙血症发病率平均为35.2%,血钙平均浓度为(2.05±0.01)mmol/L,表明随着泌乳天数的增加,低钙血症有缓解趋势。奶牛产后12 h内酮病发病率平均为5.5%,血液β-羟丁酸(BHBA)平均浓度为(0.68±0.04)mmol/L,产后3~7 d酮病发病率平均为16.3%,血液BHBA平均浓度为(0.98±0.07)mmol/L,表明随着泌乳天数增加能量负平衡有加重趋势。奶牛产后12 h内高游离脂肪酸(NEFA)发生率平均为49.4%,血液NEFA平均浓度为(0.76±0.03)Meq/L,产后3~7 d高NEFA发生率平均为41.3%,血液NEFA平均浓度为(0.71±0.03)Meq/L,表明泌乳初期高NEFA发生率远高于酮病发病率,随着泌乳天数增加血液NEFA浓度有下降趋势。奶牛产后血液中钙的浓度与NEFA浓度呈极显著负相关(P<0.01),血液中NEFA浓度与BHBA浓度呈极显著正相关(P<0.01)。
The incidence of hypocalcemia and ketosis of dairy cows from 9 farms in Shanghai was investigated. The results showed that the average incidence of hypocalcemia, ketosis and high blood NEFA of cows within 12 h postpartum were 86.1%, 5.5% and 49.4%, respectively. The averag serum concentration of calcium, BHBA and NEFA were （1.82±0.02）mmol/L, J （0.68±0.04）mmol/L and （0.76±0.03）Meq/Li respectively. The average incidence of hypocalcemia, ketosis and high blood NEFA of cows between 3 and 7d after calving were 35.2%, 16.3% and 41.3% respectively. The average serum concentration of calcium, BHBA and NEFA were （2.05±0.01）mmol/L, （0.98±0.07）mmol/L, and （0.7 1±0.03）Meq/L, respectively. Correlation analysis showed that there was a significant negative correlation between the concentration of calcium and the concentration of NEFA in blood （P〈0.01）. There was also a significant positive correlation between concentration of BHBA and NEFA in the blood （P〈0.01）.
出处
《中国畜牧杂志》
CAS
北大核心
2018年第1期147-150,155,共5页
Chinese Journal of Animal Science
关键词
低钙血症
酮病
调查
上海
Hypocalcemia
Ketosis
Survey
Shanghai
