Fitzner, G.E.; Goodband, R.D.; Hines, R.H.; Nelssen, J.L.; Nichols, D.A.; Kropf, D.H.; Schricker, B.R.; Darden, D.E.; Weeden, T.L.
(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1989)
One hundred forty-four pigs (72 barrows and 72 gilts) were utilized in six treatments
with six pens each to evaluate four levels of daily porcine somatotropin (pST) injections (0, 1, 3, or 5 mg/d) in combination with diets ...