Мобильная версия

Доступно журналов:

3 288

Доступно статей:

3 891 637

 

Скрыть метаданые

Дата выпуска 1938
dc.description Poultry Farming in the Four-Year-Plan. Geflügelhaltung im Vierjahresplan. Schneider. Deutsche Landwirtschaftliche Geflügelzeitung, Vol. 40, 1937, p.385.The number of eggs imported last year was 1,2 milliards. The supply for home consumption can only be obtained by increasing the production of hens on the farms and not by increasing the number of hens. In the first place a better ratio of young hens to old will have to be obtained. The present ratio 1:2 is to be reduced to 1:1.
Формат application.pdf
Издатель Cambridge University Press
Копирайт Copyright © World's Poultry Science Association 1938
Название Breeding
Тип research-article
DOI 10.1017/S1877965400003262
Print ISSN 1877-9654
Журнал International Review of Poultry Science
Том 11
Первая страница 33
Последняя страница 49
Выпуск 1-2

Скрыть метаданые