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Abstract In Swedish Red (SRB) dairy cattle, genetic effects on stillbirth and calving difficulty were studied in 804,268 first- and 673,150 second-calvers. Uni- and bivariate linear sire-maternal grandsire models were used to analyse calving data gathered between 1985 and 2000. Mean incidences...
Abstract Genetic parameters were estimated for lactation average somatic cell score (SCS) and clinical mastitis (CM) for the first three lactations of multiparous Finnish Ayrshire cows. A multi-trait linear sire model was used for estimation of covariance components, and the efficiencies of...
Abstract The study was carried out to investigate the effects of betaine monohydrate (BET) and betaine derived from condensed molasses solubles (CMS) on ileal and total tract nutrient digestibility in weaned piglets. The experiment included three treatments with 12 eight-week-old barrows with an...
Abstract The grazing behaviour of cows from two mixed herds grazing semi-natural mountain grasslands was studied for two weeks each summer during three years. The two breeds included in the study were the high yielding, modern dairy cattle breed Norwegian Red (NR) and the moderate yielding, old...
Abstract To examine if hard floor or relocation to a new room affects the pulsatile secretion of growth hormone (GH) and cortisol in calves, we housed individually 12 calves on concrete floors and 12 on rubber mats for 67–74 days. Half of the calves in each pen were relocated to an identical but...
Abstract Aggressive and sexual behaviour in entire males and females were studied on 408 pigs. The sum of aggressive interactions in the pen during routine feeding (ALP) was lowest in single-sex pens with females. ALP was higher at 132 than at 155 days. High ALP correlated with high average...
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