01660nam a2200229 a 450000100080000000500110000800800410001910000210006024500550008126000380013630000130017450000670018752010590025465000160131365000130132965000160134265000110135865000140136965000180138365000180140165300110141918012652000-06-26       1955    bl uuuu      00u1 u    #d1 aRHOAD, A. O. ed.  aBreeding beef cattle for unfavorable environments.  aAustin: University of Texasc1955  a248p.il.  aA Symposium presented at the King Ranch Centennial Conference.  aModern point men: an address of wilcome; Introduction: The impact of science on ranching; The unfavorable environment; Degeneration of the British beef breeds in the tropics and subtropics; Heat tolerance in cattle; The effects of climate on reproduction; Climatic stress in animal health; The effects of low-plane nutrition on production; Soil fertility in relation to production; Breeding range grasses for a difficult environment; Breeding beef cattle for the unfavorable environment; The forest ox, or kouprey, of southeast Asia; Estimates of heritability in a breeding program; Building breeds as a problem in population genetics; The place of crossbreeding and inbreeding; The development and maintenance of high genetic standard; Quality of beef as related to grade and laboratory test; The improvement of indigenous breeds in subtropical environments; Improving indian breeds in Brazil; Procedures used in developing the Santa Gertrudis breed; The interrelation of scientific research and practice; Our one hundred years of ranching - what next?.  abeef cattle  abreeding  aenvironment  aBovino  aCriação  aGado de Corte  aMeio Ambiente  aBovine