Kadysh V. The reproductive ability forming of angus bulls

In the dissertation the research results of growing and developing of animalsorganism, sexual organs and glands, the influeuce of growing intensity, age, livingweight, bloodcharacteristics on the reproductive ability forming of angus bulls is considered. The living weight and sexual organs growing in different ageperiods is gone not uniform. The testis canal diametr high correlated to the testis weight. The dependence between spermoproduction, age and living weight is determined. The heredity influence on the semenguality. The growing inteusity determine the animal growing and developing, sexual maturity, spermproduction and aminoacids in semen and blood of serum. The agedinamic of free aminoacids and correlation with spermguality is determined.