|dc.description.abstract||Sociability is the relative preference of individual animals to seek out close contact with
conspecifics. The aim of this study was to develop suitable tests that could be used to
measure the sociability of individual cows on commercial farms. A standardised runway
test was used as a ‘‘gold standard’’ test of social motivation and was repeated three times
on 46 focal cows. In the runway test, the average latency to reach 5m and 2m from the
herd and the time spent in these areas were recorded and analysed for repeatability.
Latency to reach the 5m line over the three tests was the most repeatable variable (0.54)
and was taken as ameasure of social motivation against which to assess othermeasures of
sociability shown by the cows in their home-pen. The home-pen measures were the
distance of each cow to the two nearest neighbours, location of the cow in the cow shed,
and the level of synchrony based on individual behaviour of each focal cow compared with
the rest of the herd’s behaviour. Cows that had high latencies to reach the 5m line had
fewer recordings with two near neighbours (W1 = 5.31, P = 0.021), were less synchronised
with the herd (W1 = 4.82, P = 0.028), were not present at the feedface during peak feeding
(W1 = 4.13, P = 0.042) and stood at the periphery of the cow shed (W1 = 4.03, P = 0.045).
These results indicate that these measures could be used to assess the sociability of
individual dairy cows in on-farm studies.
2009 Elsevier B.V. All rights reserved.||