Roux, L.L.; Murray, G.N.; Schutte, D.J.; South Africa. Dept. of Agricultural Technical Services
(Pretoria : Government Printer, 1935)
A study was made of the effect on the S.N.F. percentage of milk of three types of rations, namely, heavy concentrates, heavy dry roughage and heavy succulent rations, when these were feel throughout the lactation period. ...