What are the desirable traits for which improved varieties developed by cross-breeding programmes between indigenous and exotic breeds? What are the advantages of exotic breeds?
Dear student.
Exotic breeds have several advantages such as high yield of milk, long lactation period, good quality and quantity of milk.
Regards.
An indigenous breed like Aseel is crossed with an exotic breed like the Leghorn to produce an improved hybrid variety with the desired traits.
Some desirable traits of hybrid poultry are as follows:
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Good quality and large size of eggs
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Low maintenance requirement
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High resistance to diseases
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Tolerance to high temperature
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Good quality and quantity of chicks
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Ability to utilize cheaper diets produced from agricultural wastes
Exotic breeds have several advantages such as high yield of milk, long lactation period, good quality and quantity of milk.
Regards.