E. Schmidt et G. Schonmuth, FACTORS INFLUENCING THE FEED-EFFICIENCY A T MILKING COWS - AN EXPERIMENTAL-STUDY ON HOLSTEIN-FRIESIAN, JERSEY AND BLACK-PIED-DAIRY CATTLE, Archiv fur Tierzucht, 40(1), 1997, pp. 3-18
The possibilities of an indirect breeding influencing of the feed effi
ciency were investigated The regression coefficients between the trait
s of efficiency gross efficiency, net efficiency, part of energy used
for milk synthesis, energy yield per kg metabolic body weight and the
traits milk yield feed intake, back fat thickness, body weight at seve
ral times, body measurements are presented and discussed.