ABSTRACT
Adjustment factors for weight of weaning Iambs

Leonor Rivas L.1, Luis Barrales V.2, Cristián Crempien L.2, Fernando Silva F.2, Julia Avendaño R.3
 

Field data on 841 Suffolk-down lambs were used to determine the effects of age of the mother ewe, sex and type of parturition (single vs. multiple) on age-corrected weight, at 90 days of age. Least Squares Analysis showed that ah the aboye effects and the interaction age of ewe x type of par turition were significant (P < 0.05). Additive and multiphicative adjustment factors were computed across years, and were expressed both as a deviation from or a ratio of the mean of single lambs, males and born from 4 years oId ewes.

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1 Casilla 3457, Santiago, Chile.
2 Estación Experimental La Platina (INIA), Casilla 5427, Santiago, Chile.
3 Subestación Experimental Cauquenes (INIA), Casilla 165, Cauquenes, Chile.