Most beef producers in Victoria use straightbred British breed cattle whilst many experiments, including one at Hamilton, have shown that suitable crossbred cows are more productive than such straightbreds when grazed together and assessed on a per head basis. Because of the possibility of genotype differences in feed intake, these findings need to be confirmed on a per hectare basis. A simple model predicted a higher productivity and profitability per cow and per hectare from the use of Angus x Hereford and Friesian x Hereford cows relative to Hereford cows except that Friesian x Hereford cows at high stocking rates had a much reduced pregnancy rate. First year results from an experiment in which these three genotypes were grazed separately at three stocking rates support these predictions.

J. HL Morgan

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume IX. Breeding programs for dairy and beef cattle, water buffalo, sheep, and goats., , 319–324, 1986
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