Efeitos do horário de postura de matrizes pesadas sobre o rendimento de incubação
The effects of oviposition time, which represents different positions of the follicles in a sequence of posture, were studied on egg weight, chick weight, egg weight loss during incubation, hatchability, embryo mortality and infertility . A total of 19, 820 eggs, layed on the same day, from Cobb® broiler breeders aging 46-week-old were used. The eggs were classified according to the oviposition time posture (corresponding to the time of collection) from 8:30 am, 10:30 am, 12:30 pm, 14:30 pm and 16:30 pm, which represented the folowing treatments: 1st, 2nd, 3rd, 4th and 5th collects, respectively. The experimental design was completely randomized with five treatments and 36 repetitions, and each tray of 96 eggs was considered a repetition. The normal and homogeneous data were submitted to analysis of variance and means compared by Tukey test. The non-normal and non-homogeneous averages were compared by Kruskal-Wallis test. It is concluded that the time of egg laying has influence on egg weight and chick weight, but does not affect hatchability, fertility and embryonic development.
Main Authors: | , , , , , , , , , |
---|---|
Format: | Digital revista |
Language: | Portuguese |
Published: |
Universidade Federal de Minas Gerais, Escola de Veterinária
2013
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400045 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|