The effects of conditioning to suckling, milking and of calf presence on the release of oxytocin in dairy cows

Applied Animal Behaviour Science
V TancinR M Bruckmaier

Abstract

The aim of the study was to record the oxytocin (OT) release during milking (M) without or with calf presence, suckling (S) and finally calf removal just before the next milking in cows during postpartum or early lactation periods. Furthermore, the release of OT was examined during S and M in unknown surroundings (parlour). A total of 20 Brown Swiss cows kept under loose housing environment were used in our experiment. In both periods, the cows were milked twice daily at 07.00 and 18.00h and suckled three times daily at 09.00, 14.00 and 20.00h in the stall (tie housing). In the postpartum period, 13 cows were suckled and milked in the presence of their calves in the stall for the first 5 days of postpartum. Five from seven primiparous cows were additionally suckled by their own calves in the parlour on day 5 at 20.00h. On day 6, calves were separated and moved from mothers to the calf barn 10min before morning M. After evening milking cows were relocated to the herd within the same stable and milked in the parlour for a period of 4 weeks without contact to their calf. For control, additional seven primiparous cows without calf presence (not suckled) were also milked in the tie housing. In the early lactation period, suckled cow...Continue Reading

References

Nov 1, 1992·The Journal of Dairy Research·R M BruckmaierJ W Blum
May 1, 1991·Tropical Animal Health and Production·R G PegramA J Wilsmore
Jun 1, 1994·Acta Paediatrica. Supplement·E B Keverne, K M Kendrick
Dec 1, 1993·Biology of Reproduction·P A SilveiraG L Williams
Jul 25, 1998·Genes and Function·K U WagnerL Hennighausen
Mar 16, 2000·The Journal of Dairy Research·V TancinD Schams
Feb 22, 2001·Small Ruminant Research : the Journal of the International Goat Association·J A. NegrãoJ Labussière

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