Báo cáo khoa học: "Blood Selenium Associated with Health and Fertility in Norwegian Dairy Herds" pdf

Acta vet scand 2005, 46, 229-240 Blood Selenium Associated with Health and Fertility in Norwegian Dairy Herds By E Kommisrud1, O Østerås2,3, T.Vatn1 1Geno Breeding and AI Association, Hamar, Norway, 2TINE Norwegian Dairies BA, Ås, Norway, 3Norwegian School of Veterinary Science, Oslo Kommisrud E, Østerås O, Vatn T: Blood selenium associated with health and fertility in Norwegian dairy herds Acta vet scand 2005, 46, 229-240 – A survey of blood selenium (Se) concentrations in Norwegian Red heifers and dry period cows was conducted to reveal possible association to management, feeding, health and fertility Selenium contents were determined in 254 herd blood samples consisting of pooled samples from individual non-lactating animals from herds in counties The Se concentrations showed a normal distribution with mean 0.09 µg Se/g blood, with a standard deviation (SD) of 0.05, and ranged from 0.02 to 0.23 µg/g, with 50 % of the samples being between 0.06 and 0.11 µg/g The herds with Se concentrations below 0.06 µg/g were smaller (21.4 ± 8.7 cow-years) than those with Se levels above 0.11 µg/g (27.5 ± 14.1 cow-years) (P