Smuts, D.B.; Marais, J.S.C.; Du Toit, P.J.
(Pretoria : The Government Printer, 1939)
In a study on the endogenous nitrogen excretion of immature sheep, it was found that young sheep reach their endogenous level on the 6th day, after having been on a standard ration of 14 per cent lucerne protein. The ...