Cloprostenol as an aid in dairy herd management: 1. Mating management

Authors: Day AM
Publication: New Zealand Veterinary Journal, Volume 25, Issue 11, pp 300-305, Nov 1977
Publisher: Taylor and Francis

Animal type: Cattle, Livestock, Production animal, Ruminant
Subject Terms: Artificial insemination, Reproduction - female, Breed/breeding, Husbandry/husbandry procedures, Endocrine/autocrine/paracrine, Reproduction, Oestrus/oestrous, Reproduction - male, Reproduction - hormones
Article class: Scientific Article

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Abstract: An AB programme restricted to 14 days through the use of Cloprostenol on selected cows is described. Of 276 cows to be mated, 135 were treated after selection on pre-mating oestrus dates or rectal examination. Treatment was administered on the 6th day of mating. Untreated cows were inseminated, on detection of oestrus, throughout the 14 days. Nine of 135 treated cows were inseminated within 48 hours, 50 at 72 hours only, 75 at both 72 and 96 hours and one at 96 hours after treatment. All cows in season were inseminated, irrespective of recent insemination. Prolonged and split heats, and short cycles (less than 14 days), occurred in treated and untreated cows. AB conceptions confirmed in those cows retained in the herd were 62.3% of untreated cows (66.9% of those which were inseminated) and 69.1% of treated cows. The conceptions achieved in this abbreviated AB programme are equal to those normally achieved after 7 weeks of AB. Mating management is discussed; the release of labour from AB involvement 4 weeks earlier than usual is a major advantage of this technique.

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