A study of the operation of selection for production in a New Zealand dairy herd : being a thesis submitted by "Bonus" for the Animal Husbandry section of the M. Agr. Sc. examination

Abstract

No abstract. The following taken from the introduction: "It may be argued that a datry farmer who is teeting hls eow8 every year and breedlng hts own replacement helfers, slred by pedtgree dalry bull-s wlth r.easonable bntterfat backtng, shorrld by a prognamme of .tntelligent cuLltng, be able to establtsh and malntain a herrl consistlng malnly of mature cows of hlgh produclng abtllty. Thls ls the polnt that thts stucly endeavours to answer."