9693

8937

كارشناسي ارشد

علوم دامي

اصفهان:دانشگاه صنعتي اصفهان، دانشكده كشاورزي

1393

يازده،75ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

مهندسي كشاورزي

ID8937

80 Effect of BCS in Start of Close up Period and Antioxidant Supplements on 0xidative Stress and Metabolic Disease in High Producing Dairy Cows AliReza Yazdani ar yazdani@ag iut ac ir 22 October 2014 Department of Animal Science Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language FarsiA Riasi ariasi@cc iut ac irS Ansari Mahyari s ansari@cc iut ac irAbstractThe aim of sudy was to evaluate the effect of BCS and selenium vitamin E supplementation on milk yield andcomposition blood parameters and metabolic diseases in high producing Holstein cows The experiment was coductedas a completely randomized design with 2 2 factorial method Total 136 multiparous cows at the beginning of transitionperiod to 3 months after calving were used in this expriment Treatments were 1 body condition score 4 with injectionselenium vitamin E 2 body condition score 4 without injection selenium vitamin E 3 body condition score 3 5 withinjection selenium vitamin E 4 body condition score 3 5 without injection selenium vitamin E BCS were measuredusing ultrasonography and by individual observation in 3 weeks intervals Blood samples were taken from thecoccegeal vein at parturition time and weeks 2 4 and 6 of postpartum period Disease incidence was assessed byexamining the symptoms and diagnosis of farm veterinarian Production and milk composition in the form of monthlyrecords were obtained in the first 6 months of lactation The results showed that cows with a body condition score 4 hadhigher P 0 05 milk production than those the other treatments The treatment which received selenium vitamin E hadhigher P 0 05 fat to protein ratio in milk The animals receiving selenium vitamin E had higher P 0 01 total serumprotein and albumin levels Rectal temperature was higher P 0 05 in cows with normal BCS 2 weeks after parturition Our treatment had no effect on the uterus involution Injection of selenium vitamin E improved the health status ofanimals however the supplementation had no significant effect on the incidence of disease Keywords body condition score selenium vitamin E metabolic diseases blood parameters

احمد رياسي، سعيد انصاري مهياري

حميدرضا رحماني، علي نصيرپور