• Age as a factor in animal breeding 

    Zimmerman, Brenton Creamer (University of Missouri--Columbia, 1918)
    The experiment furnishing the basis for this discussion was begun in 1909 by Director F.B. Mumford and has since been continued under his general direction. Swine were used in the experiment since they probably lend ...
  • Age as a factor in animal breeding 

    Das, Rajani Kanta, 1881- (University of Missouri--Columbia, 1911)
    Many breeders believe in the evil effect of early reproduction. It is said that early marriage has led to the degeneracy of many nations. The domestic animals are national assets and their preservation, like the conservatives ...
  • Age as a factor in animal breeding 

    Jones, John McKinley (University of Missouri--Columbia, 1912)
    Text from the Introduction: Animal breeding to-day offers opportunities for scientific study and research. We find two classes of men engaged in the breeding of domestic animals: First: The practical breeder, who wishes ...