منابع مشابه
Poultry 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...
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 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 کاملRisk perceptions of public health and food safety hazards in poultry husbandry by citizens, poultry farmers and poultry veterinarians
Differences in risk perceptions of public health and food safety hazards in various poultry husbandry systems by various stakeholder groups, may affect the acceptability of those husbandry systems. Therefore, the objective was to gain insight into risk perceptions of citizens, poultry farmers, and poultry veterinarians regarding food safety and public health hazards in poultry husbandry systems...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1951
ISSN: 0032-5791
DOI: 10.3382/ps.0300644