Sentences with phrase «effect over breeding»

Not exact matches

Because only one breeding pair are the parents of over 80 percent of the young in a meerkat group, this effect should benefit the next generation as well.

Science of the Unfit «Ever since the late Sir Francis Galton gave us his science of Eugenics, which in its most literal sense means «good breeding,» the scientific students of mankind, the directors of insane asylums and hospitals, and criminologists the world over, have been compiling statistics to show not only the danger of permitting the marriage of criminals, lunatics, and the physically unfit, but the effect upon mankind.

Four years later, Chihuahua overpopulation is still an issue for the Bay Area as the effects of over breeding can last for decades.

The use of popular sires can intensify both the positive and negative effects of line - breeding, because over time most dogs will wind up being to some degree related.

However, the breeding program might have a slow effect on disease prevalence over a longer period, especially in dogs less than four years of age.

We show that, indeed, movies have had a significant impact on dog breed popularity in the U.S.A., sometimes influencing sales of featured breeds for a decade or more, but also that their effect has been declining over time.

The striking effect of neutering in female Golden Retrievers compared to male and female Labradors, and male Golden Retrievers, suggests that for this gender and breed the presence of gonadal hormones has a protective effect against cancers over most years of the dog's life.

In the effects of spay / neuter study, they interviewed more than 1500 dog owners (all breed club members with dogs of known heritage) with dogs over the age of 1 year old.

Excellence in one field has a halo effect that carries over into other fields; it attracts and breeds respect for whatever you do.