InVet 2022, 24 (2): 1-9 COMUNICACIÓN CORTA ISSN 1514-6634 (impreso) ISSN...

The shape of the eggs laid by three genotypes of hens suitable for semi-intensive systems: Campero Casilda, Negra INTA and Rhode Island Red was evaluated with the aim of studying, with a dynamic criterion, its modification throughout the cycle given its relationship with the resistance to breakage a...

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Detalles Bibliográficos
Autores principales: Romera, B.M., Advínculo, S.A., Canet, Z.E., Dottavio, A.M., Di Masso, R.J.
Formato: Artículo publishedVersion
Lenguaje:Español
Publicado: Universidad de Buenos Aires. Facultad de Ciencias Veterinarias 2022
Materias:
índice de forma
longitud del huevo
ancho del huevo
avicultura alternativa
shape index
egg length
egg width
alternative poultry
Acceso en línea:http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_7092
https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_7092.dir/7092.PDF
Aporte de:
Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires
Descripción
Sumario:The shape of the eggs laid by three genotypes of hens suitable for semi-intensive systems: Campero Casilda, Negra INTA and Rhode Island Red was evaluated with the aim of studying, with a dynamic criterion, its modification throughout the cycle given its relationship with the resistance to breakage and its aptitude as incubating eggs. Random samples of 50 eggs from each group were collected monthly from 25 to 69 weeks of age. Egg length and width were measured and the shape index (IF= (width / length) x 100) was calculated. Eggs were classified as elongated IF < 72, satisfactory 72 ? IF ?76 and rounded IF > 76. Egg length-age and width-age data were fitted with the Brody function. Shape index-age data were fitted by linear regression. The positive association between shape index and shell strength and the negative association with hatchability determines that rounded eggs have higher strength but less aptitude as hatching eggs and vice versa. As a comparative advantage, Campero Casilda eggs present during a greater proportion of the production cycle a rounded shape associated with a better behavior against breakage, but with the disadvantage of being less suitable for incubation purposes.

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