EGGS WEIGHT INFLUENCE ON THE INCUBATION OF LIGHT HEN BREEDS EGGS
Abstract
The experiment amterial was represented by a lot of reproduction hens, Rosso SL 2000 parents for egg consumption. During the period of the flat level of egg laying curbe (35 – 49 weeks) from these hens weekly were harvested eggs which were after that grouped related to their weight in the small (50 – 57 g), medium (58 – 62 g) and big (63 – 68 g) eggs categories and then were incubated. Incubation indexes followed were the fecundity, dead embrios and hatching percent. The highest level of fecundity was realised earlier in the big eggs category and then decrease gradual. Dead embryos percent has higher values during the first week of incubation. In the next two weeks decreases, but as a fact of a bad incubation regime. For the big and small eggs the dead embryos percent is higher
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