Egg laying characteristics, egg weight, embryo development, hatching weight and post-hatch growth in relation to oviposition time of broiler breeders

Two experiments were conducted to determine egg laying characteristics and the effects of oviposition time on egg weight, embryo development and post-hatch growth in broiler breeders. In experiment 1, eggs collected for 3 consecutive days on hourly basis between 06:30 and 17:30h were categorized to...

Full description

Saved in:
Bibliographic Details
Published in:Animal reproduction science 2015-05, Vol.156, p.103-110
Main Authors: Akil, R., Zakaria, A.H.
Format: Article
Language:English
Subjects:
Animals
Broiler breeders
Chick Embryo - physiology
Chickens - growth & development
Chickens - physiology
Egg laying characteristics
Embryonic Development - physiology
Female
Incubation
Oviposition
Oviposition - physiology
Post-hatch growth
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two experiments were conducted to determine egg laying characteristics and the effects of oviposition time on egg weight, embryo development and post-hatch growth in broiler breeders. In experiment 1, eggs collected for 3 consecutive days on hourly basis between 06:30 and 17:30h were categorized to early, middle and late oviposition times in the clutch. In experiment 2, eggs were incubated to study embryo development, remaining albumen, liver weight, heart weight and the tibia length of embryos at 12, 14, 16 and 18 days of incubation as well as the body weight of hatchlings and chickens at 7, 21 and 42 days of age in relation to oviposition time. About 76% of nest eggs were laid from 06:30 to 11:30h. A similar pattern was observed in floor eggs. Egg weight decreased (P
ISSN:0378-4320
1873-2232
DOI:10.1016/j.anireprosci.2015.03.006