Iqbal, Z.; M.Abdullah; M. Y. Rana; H.Mustafa; W. A. Khan; J.A.Bhatti; N.Ahamd; A.Iram; M.Raza. EVALUATING THE IMPACT OF VARYING CONCENTRATE RATION LEVELS ON THE PERFORMANCE OF SAHIWAL HEIFERS DURING THE PRE-PUBERTAL PERIOD. PJS 2023, 75, 168-175.