00681nam a2200181Ia 4500001000700000003000500007008004100012010001100053040000900064100002900073245018900102260004400291300001100335502009000346650002700436650002000463650001600483Z_1323CHAP220113s1984    xx            000 0 und d  a164411  cCHAP  aRíos Ramírez, Jose G  aEffects of selection for high and low pastweaning weigth gain in rats : correlated responses in growth components, reproduction and maternal performance  /cby Jose G. Ríos Ramírez  aLincoln, Nebraska  :bThe author,c1984  a139 h.  aThesis (Doctor of philosophy) -- University of Nebraska. Department of Animal Science  aRatasxAlimentación   aRatasxDestete   aRatasxPeso