Egg production increasing

Selection of 2 egg-specialized duck breeds contains of 4 high performance lines to meet the needs of the farmers and the development of raising egg-specialized ducks in Vietnam.

27p mangamanga 21-02-2020 34 5   Download

The aim of this study was to compare the biological characteristics of newly introduced Apis mellifera bees with those previously introduced in 1960. New introduced Apis mellifera bees showed low inbreeding percentage and high honey productivity. However, they exhibited high disease infections and low egg-laying capacity of queens, consequently, resulting in low worker population.

7p thulanh3 08-09-2011 60 6   Download