日粮添加不同水平包被氯化铵对围产期娟姗牛健康的影响研究  

Effects of Different Levels of Coated Ammonium Chloride in Diet on Health of Jersey Cows in Perinatal Period

作　　者：张江亮 王恒 马玉敏 ZHANG Jiangliang;WANG Heng;MA Yumin(Shanghai Menon Animal Nutrition Technology Co.,Ltd.,Shanghai 201800;Shanghai Chongming Aoshan Dairy Farm,Shanghai 202150)

机构地区：[1]上海美农生物科技股份有限公司,上海201800 [2]上海崇明鳌山奶牛场,上海202150

出　　处：《中国乳业》2025年第3期45-50,56,共7页China Dairy

基　　金：上海奶牛绿色健康养殖关键技术研究与集成应用[沪农科推字(2022)第2-1号]。

摘　　要：[目的]研究日粮添加不同水平包被氯化铵(美宝安)对围产期娟姗牛健康的影响。[方法]将胎次、体况相近的围产前期娟姗牛分成4组:CON组、A组、B组和C组。CON组饲喂基础日粮,DCAD值为+165.64 mEq/kg DM;A组饲喂基础日粮+200 g美宝安,DCAD值为-43.94 mEq/kg DM;B组饲喂基础日粮+250 g美宝安,DCAD值为-112.51 mEq/kg DM;C组饲喂基础日粮+300 g美宝安,DCAD值为-175.37 mEq/kg DM。[结果](1)与CON组相比,A组、B组和C组采食量显著增加(P<0.05),其中B组干物质采食量最高。(2)随美宝安添加量的增加,围产前期娟姗牛尿液pH值逐渐降低,且各组间差异显著(P<0.05),B组尿液pH值处于适宜范围值。(3)随日粮DCAD值的降低,A组、B组和C组血钙水平呈上升趋势,各组间差异显著(P<0.05)。(4)与CON组相比,A组、B组和C组产乳热、胎衣滞留、子宫内膜炎和真胃移位发病率均降低,其中B组胎衣滞留和真胃移位发病率最低。(5)CON组、A组、B组和C组平均初乳量分别为9.20 kg、9.28 kg、9.20 kg、9.10 kg,组间差异不显著(P>0.05)。CON组、A组、B组和C组初乳中白利糖度分别为32.0%、33.0%、31.8%和32.1%,组间差异不显著(P>0.05),A组与B组间白利糖度差异显著(P<0.05)。[结论]围产期娟姗牛日粮添加美宝安可以提高奶牛干物质采食量,降低日粮阴阳离子差水平,有效调节牛群尿液pH值水平,提高血钙水平,降低产后疾病发病率。在本试验条件下,围产期娟姗牛日粮添加250g美宝安,调节DCAD值至-112.51mEq/kgDM为宜。[Objective]To study the effects of different levels of coated ammonium chloride(Menoam)on the health of Jersey Cows in perinatal period.[Method]Pre-perinatal Jersey cows with similar parity and body condition were divided into 4 groups:CON Group,Group A,Group B and Group C.CON Group was fed the basal diet,and the DCAD value was +165.64 mEq/kg DM,Group A was fed the basal diet+200 g Menoam,and the DCAD value was -43.94 mEq/kg DM.Group B was fed the basal diet+250 g Menoam,and the DCAD value was -112.51 m Eq/kg DM.Group C was fed the basal diet+300 g Menoam,and the DCAD value was -175.37 m Eq/kg DM.[Result](1)Compared with the CON Group,the feed intakes of groups A,B and C increased significantly(P<0.05)and the dry matter intake of Group B was the highest(2)With the increase of the addition amount of Menoam,the urine pH value of Jersey cows in the pre-perinatal period gradually decreased,and the differences among the groups were significant(P<0.05),and the urine pH value of Group B was the appropriate range.(3)As the dietary DCAD value decreased,the blood calcium levels of Group A,B and C showed an upward trend,and the differences among the groups were significant(P<0.05).(4)Compared with the CON Group,the incidences of milk fever,retained fetal membranes,endometritis and abomasal displacement in Group A,Group B and Group C all decreased,and the incidences of retained fetal membranes and abomasal displacement in Group B were the lowest.(5)The average colostrum yield of CON Group,Group A,Group B and Group C were 9.20 kg,9.28 kg,9.20 kg and 9.10 kg,respectively,and there was no significant difference among the groups(P>0.05).The Brix degrees of colostrum in CON Group,Group A,Group B and Group C were 32.0%,33.0%,31.8% and 32.1%,respectively.There was no significant difference among the groups(P>0.05),but there was a significant difference in the Brix degree between group A and group B(P<0.05).[Conclusion]Adding Menoam to the diet of Jersey cows in the perinatal period can increase DMI,reduce the DCAD value,effectively

关 键 词：娟姗牛 包被氯化铵(美宝安) 健康 

分 类 号：S82[农业科学—畜牧学]