Data/hora: 09/06/2024 03:37:59

Provedor de dados: 	45	
País: 	Brazil	
Título: 	Breeder age and bone development in broiler chicken embryos	
Autores: 	Alfonso-Torres,K.A.; Gargaglioni,L.H.; Pizauro,J.M.; Faria Filho,D.E.; Furlan,R.L.; Macari,M.	
Data: 	2009-02-01	
Ano: 	2009	
Palavras-chave: 	Chicken embryo; Alkaline phosphatase; Epiphyses; Growth plate; Long bones.	
Resumo: 	The effect of breeder age on long bone development was studied in chicken embryos from 12 days of incubation until hatching. Fertile eggs were incubated and randomly assigned in a 2 x 6 factorial arrangement (two breeder ages - 38 and 60 weeks and six incubation days - 12, 14, 16, 18, 20, and 21). Enzymatic activity of acid and alkaline phosphatases in tibial epiphyses and weights as well as length and width in tibias and femurs of the embryos were determined. Tartrate-resistant acid and alkaline phosphatases activity in epiphyses was not affected by breeder age. Absolute weight and width of femur and tibia were larger in 60-week-old embryos compared to 38-week-old. Enzymatic activity and morphometric measurements increased with incubation day, independently of breeder age. The results showed that the process of endochondral ossification during the last two thirds of embryo development was not influenced by the age of the breeders. Although, in terms of absolute weight, the long bones of embryos from older breeders were heavier, which was associated with the larger width of the bones, but and not with their length.	
Tipo: 	Info:eu-repo/semantics/report	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000100031	
Editor: 	Universidade Federal de Minas Gerais, Escola de Veterinária	
Relação: 	10.1590/S0102-09352009000100031	
Formato: 	text/html	
Fonte: 	Arquivo Brasileiro de Medicina Veterinária e Zootecnia  v.61 n.1 2009	
Fonte: 	info:eu-repo/semantics/openAccess