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Fifty-four adult Nigerian local cocks (18 normal, 18 frizzle, and 18 naked-neck feathered birds) aged 20 weeks old were used to determine the effect of genotype on morphometric differentiation of the reproductive organ and sperm reserve in a complete randomized design experiment. Semen was...

Oke, U. K.; Ihemeson, C.
CIPAV Foundation, Cali, Colombia
Livestock Research for Rural Development, 2010, 22, 3, pp 53

THE most important piece of work of the cattle section and of the Institute as a whole is the attempt to develop new types of cattle, namely the Siberian Simmental and the Siberian Friesian. The work was begun in 1932 by crossing native cows with purebred bulls. Crossbreds of the 2nd and 3rd...

Maiorova, E. T.
Sovetskaya Zootekhniya, 1939, 6, pp 70-76