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| Crosara,FSG; Pereira,VJ; Lellis,CG; Barra,KC; Santos,SKA; Souza,LCGM; Morais,TA; Litz,FH; Limão,VA; Braga,PFS; Fernandes,EA. |
| ABSTRACT For a long time, it has been said that eggshell quality decreases as eggs increase in size, but this increase is seen as the breeder age advances. Therefore, the present study aimed to evaluate the age and egg weight effect on Cobb 500 broiler breeders on eggshell quality. The quality measures tested were eggshell and mineral matter percentage, eggshell surface, shape and eggshell index, eggshell and membrane thickness and specific gravity. Eggs from 27, 31, 36, 40, 46, 48, 53, 58 and 63 week-old breeders were classified as eggs with a constant weight ranging from 63.8 ± 0.2; and eggs with increasing weight, according to age, being: 55.8g; 60g; 62.2g; 64.2g; 65.2g, 66.6g, 68.1g, 69.9g and 72.5g, respectively. The eggs weight did not influence the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler breeders; Eggshell thickness; Shell area; Shell index. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200314 |
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