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Effect of breed of ram on the onset of the breeding season in Romney ewes

Effect of breed of ram on the onset of the breeding season in Romney ewes
Peer reviewed
Tervit HR, Havik PG, Smith JF
Proceedings of the New Zealand Society of Animal Production, Volume 37, pp 142-148, Jan 1977

Article class: Conference Presentation

Subject Terms: Breed/breeding, Environment, Oestrus/oestrous, Reproduction, Reproduction - female, Reproduction - male, Seasonality/photoperiod

Animal Type: Livestock, Production animal, Ruminant, Sheep

Publisher: New Zealand Society of Animal Production

Abstract

Romney ewes joined with entire Dorset rams showed oestrus, ovulated and conceived significantly earlier than ewes with Romney rams. The time of ram joining did not affect any of these factors. The advance in the onset of the breeding season with Dorset rams is not sufficient for this effect to be used for early lamb production.

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