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Effect of exposure to males on the onset of ovarian cyclicity in Romney twin ewes

, : Effect of exposure to males on the onset of ovarian cyclicity in Romney twin ewes. Publicacoes do 5o Simposio Internacional de Reproducao Animal, Luso, Portugal, 30 de Setembro a 2 de Outubro 1993 Volume II: 247-255

For 3 ewe lambs born in Feb. and placed in a flock joined with a ram from Aug. to Oct., daily gain from late July to Jan. averaged 86.1 g vs. 100.2 for their 3 twins not exposed to a ram, and age at puberty averaged 263.3 days vs. 276.3.

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