益康XP对奶牛血浆内毒素含量及其他指标的影响  

Influence of Yikang XP on Plasma Endotoxin Concentration and Additional Indexes in Dairy Cows

作　　者：罗安智[1] 齐长明[1] 陈华林 薄林 王秀芹 王文成 闫庆 

机构地区：[1]中国农业大学动物医学院 [2]北京三元兽医站,北京100085 [3]北京长阳奶牛中心四场,北京102401

出　　处：《动物医学进展》2005年第3期92-95,共4页Progress In Veterinary Medicine

摘　　要：选取泌乳天数<40 d的健康奶牛 12头,按胎次、泌乳天数和产奶量相同或相似的原则,分为试验组和对照组。两组日粮组成相同,试验组牛每天添加益康XP的剂量为试验第1天至第7天500 g/(头·d),从第 8 天后减少到120 g/(头·d),分两次饲喂。试验期为60 d。于试验前 1 天,试验第 20 天,40天和第 60 天分别采血,用鲎试剂法测定血浆内毒素含量;定期测定日均产奶量、乳脂率、乳蛋白率和体细胞数;记录情期受胎率及疾病发生情况。结果表明,试验组奶牛在试验后第20天,第 40 天和第 60 天血浆内毒素均极显著低于对照组(P<0.01);产奶量在第20天,第60天显著高于对照组(P<0.05);两组奶牛乳脂率、乳蛋白率、体细胞数差异均不显著(P>0.05);试验组情期受胎率极显著高于对照组(P<0.01);在疾病发生率方面,试验组极显著低于对照组(P<0.01)。early lactating (DIM<40 d) Holstein cows were randomly allotted to 2 groups of 6 cows,the treatment and the control respectively,based on calving number,days of lactation and milk production. Cows were fed a basal diet and the treatment group plus Yikang XP (500 g/cow per d from d 1 to 7,and 120 g/cow per d after 7d) with six cows per group. Experimental periods were 60 d. Blood samples were collected respectivly at 1d before feeding XP and 20 d, 40 d, 60 d after adding XP. Limulus test was used to detect plasma endotoxin concentration (PEC). Mean daily milk yield, milk fat, milk protein and somatic cell counts were measured periodicty. Non-return rate and morbidity were registered simultaneously. The results indicated: Compared with the control group, the mean PEC of test group was decreased by 0.925 Eu/mL(P<0.01),1.137 Eu/mL (P<0.01) and 0.913 Eu/mL(P<0.01) respectively on days 20, 40, and 60 after feeding XP; Milk production was increased by 2.9kg (P<0.05) and 3.61 kg(P<0.05) on 20 d and 60 d respectively; Milk fat percentage, milk protein percentage and somatic cell counts were not statistically different between treatments (P>0.05); Non-return rate was increased significantly (P<0.01), and morbidity rate was lower in cows fed XP than in cows receiving control diet (P<0.01).

关 键 词：酵母培养物 奶牛 内毒素 DHI指标 

分 类 号：S859.7[农业科学—临床兽医学]