Age dynamics of spermatogenesis in cocks in connection with optimization of bioengineering manipulation time
AGE DYNAMICS OF SPERMATOGENESIS IN COCKS IN CONNECTION WITH OPTIMIZATION OF BIOENGINEERING MANIPULATION TIME E.V. Beloglazova, T.O. Kotova, N.A. Volkova, L.A. Volkova, N.A. Zinovieva, L.K. Ernst All-Russia Research and Development Institute for Livestock Husbandry, RAAS, Moscow province, Podolsk region, Dubrovitsy 142132, Russia e-mail: natavolkova@inbox.ru Russian Academy of Agricultural Sciences, Moscow 117218, Russia
This article is the second of two parts. The first one was published in the issue no 2 of this same journal. The preseni study uses the dependency index and the youth ratio to describe the aging process both at regional and municipal levels. Our data show a yet moderate aging process in (he region. with an uneven distribution throughout the different municipalities.