Breeding poultry
The domestication of poultry. Principles of maintenance, care and breeding chickens. Selecting breeds for breeding. Basic principles of culling birds at breeding. Breed Character. Detailed official colour standards. Guidelines for keeping cockerels.
Подобные документы
To determine the influence of the system of mineral nutrition and care of winter wheat crops on the formation of grain yield in the Western Forest-Steppe. The data are given of results of researches in cultivation of winter wheat on intensive technology.
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