Effect of Pharmacologically Induced Changes in Milk Ejection on Suckling in Bos Taurus

Physiol Behav. 1998 Aug;65(1):151-6. doi: 10.1016/s0031-9384(98)00161-9.

Abstract

This experiment was to test the hypothesis that suckling behavior in Bos taurus is related to milk ejection. Intra-gland milk transport was manipulated by applying four different treatments to four cow-calf pairs: T1, injection of oxytocin during the post-stimulation period; T2, injection of oxytocin before a meal; T3, injection of saline solution at the same times as oxytocin was applied (control) in T1 and T2; T4, injection of an oxytocin antagonist in a similar way as T1. Drugs were applied i.v. and by remote control in order to prevent the animals from noticing the injection. All non-control treatments resulted in significant changes in the time calves spent performing uninterrupted suckling at a specific teat.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cattle
  • Female
  • Injections, Intramuscular
  • Milk Ejection / drug effects*
  • Oxytocin / analogs & derivatives
  • Oxytocin / pharmacology
  • Sucking Behavior / drug effects*

Substances

  • Oxytocin
  • oxytocin,1-(beta-mercapto-(beta, beta-cyclopentamethylene)propionic acid)-Tyr(OMe)(2)-Orn(8)-