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Behavioural response of dairy cows with and without calf-contact to hair of own and alien calves presented in the milking parlour
(Elsevier B.V., 2016-05-06)
In systems where dairy cows are milked and additionally suckle their calves during the first months of lactation, problems with alveolar milk ejection during machine-milking occur. As olfaction is a key sense for kin recognition and acceptance at the udder, olfactory stimulation might alleviate this challenge. In this pilot study, we investigated whether cows behaviourally respond to calf hair presented in the parlour, and whether this is affected by suckling the own calf or not. Discrimination between hair of the ...
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Spatio-temporal patterns of herbage availability and livestock movements: A cross-border analysis in the Chinese-Mongolian Altay
(Springer, 2016-07-04)
Due to increasing population and the recent implementation of policies to intensify the use of land and water resources, the transhumant pastoral systems in the Chinese-Mongolian Altay-Dzungarian region are rapidly changing, leading to modifications of herd size, herd composition and spatial distribution of livestock grazing. This may have major consequences for the supply and quality of rangeland biomass. Despite similar topographic settings, the socio-political framework for Chinese and Mongolian pastoralists differs ...
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Enlarging a training set for genomic selction by imputation of un-genotyped animals in populations of varying genetic architecture
(BioMed Central, 2013)
Background: The most common application of imputation is to infer genotypes of a high-density panel of markers on animals that are genotyped for a low-density panel. However, the increase in accuracy of genomic predictions resulting from an increase in the number of markers tends to reach a plateau beyond a certain density. Another application of imputation is to increase the size of the training set with un-genotyped animals. This strategy can be particularly successful when a set of closely related individuals are ...