Data/hora: 02/06/2024 06:31:31

Provedor de dados: 	96	
País: 	Brazil	
Título: 	Macroscopic embryonic development of Guinea fowl compared to other domestic bird species	
Autores: 	Araújo,Itallo Conrado Sousa de; Lucas,Luana Rudrigues; Machado,Juliana Pinto; Mesquita,Mariana Alves.	
Data: 	2019-01-01	
Ano: 	2019	
Palavras-chave: 	Embryo; Fertile eggs; Gallus gallus domesticus; Numida meleagris.	
Resumo: 	ABSTRACT Since few studies have addressed the embryonic development of Guinea fowl (Numida meleagris), the objective of the present study was to evaluate its embryonic development in the Cerrado region of Brazil and compare the results to published descriptions of the embryonic development of other domestic bird species. The commercialized weight for Guinea fowl eggs used in the experiment was found to be 37.57 g, while egg fertility was 92%. Embryo growth rate (%) was higher on the sixth day of incubation relative to other days. The heart began beating on the third day of development, while eye pigmentation and upper and lower limb buds appeared on the sixth day. The yolk sac was incorporated on the 24th day followed by chick external pipping and hatching on the 28th day. Comparisons revealed that the embryonic development of Guinea fowl exhibits both similarities to, and differences from, the embryonic development of other domestic birds. From three days of embryonic development, differences were observed among the compared species. Despite the same incubation period, Guinea fowl embryos develop faster than turkeys. All species begin internal pecking two days before hatching and internal pecking 24 h before hatching.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100604	
Editor: 	Sociedade Brasileira de Zootecnia	
Relação: 	10.1590/rbz4820190056	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Zootecnia  v.48 2019	
Fonte: 	info:eu-repo/semantics/openAccess