oa Agroanimalia - Reproduction in the ewe in realtion to plane of nutrition, body mass and change of body mass.1. Incidence of oestrus between lambing and reconception

Volume 6, Issue 2
  • ISSN : 0302-7104



Over a six-year period commencing 1967, a total of 761 Merino and 360 crossbred ewes which lambed in autumn were fed either 100% (High plane) or 50% (Low plane) of the estimated daily nutrient requirements during the 84-day lactation period. Twice-daily observations for oestrus were conducted until weaning of the lambs, at which stage half the ewes were isolated from rams (1968, 1969 and 1970 only) until one oestrous cycle prior to initiation of the annual breeding period.

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