منابع مشابه
The Principles of Poultry Husbandry
There are a number of requirements by which animals should be managed so that the best performance is achieved in a way acceptable to those responsible for the care of the animals and to the community generally. These requirements are the keys to good management and may be used to test the management of a poultry enterprise in relation to the standard of its management. These requirements are a...
متن کاملThe Principles of Poultry Husbandry
There are a number of requirements by which animals should be managed so that the best performance is achieved in a way acceptable to those responsible for the care of the animals and to the community generally. These requirements are the keys to good management and may be used to test the management of a poultry enterprise in relation to the standard of its management. These requirements are a...
متن کاملPoultry Husbandry Report
Heritability of egg size is approximately 60%-a very high value compared to the heritability of most other economic characters-and indicates that individual selection for egg size is to be preferred to family selection. A further simplification of the problem of changing the egg size of a flock by breeding selection is possible as a result of a study of genetic correlations between the weights ...
متن کاملthe principles of poultry husbandry
there are a number of requirements by which animals should be managed so that the best performance is achieved in a way acceptable to those responsible for the care of the animals and to the community generally. these requirements are the keys to good management and may be used to test the management of a poultry enterprise in relation to the standard of its management. these requirements are a...
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ژورنال
عنوان ژورنال: Journal of the American Association of Instructors and Investigators of Poultry Husbandry
سال: 1908
ISSN: 2666-3651
DOI: 10.3382/ps.0010027