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Hematological values and body, heart and liver weights of male and female broiler embryos of young and old breeder eggs Rev. Bras. Ciênc. Avic.
Morita,VS; Boleli,IC; Cargnelutti Filho,A.
This study analyzed broiler breeder age (29 or 60 wk-old) effects on physical characteristics of eggs (initial mass, mass loss, volume, diameter, surface area and density) and of eggshells(weight, volume, thickness, conductance, and porosity ), as well as the influence of embryo sex on hematological parameters and body, liver and heart weights during incubation (at days 13, 15, 18 and 21). Physical parameter values were lower in 29-wk-old broiler breeder eggs than those of 60-wk-old breeders, except for relative eggshell weight, which was higher. In both male and female embryos, erythrocytic parameters and the body, liver, and heart weights increased during the incubation. The embryos and their organs were heavier when derived from 60-wk-old breeder eggs...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Blood parameters; Breeder age; Embryos; Eggshell porosity and conductance; Sex.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100002
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