Changes in External Egg Traits of Chickens during Pre- and Post-Molting Periods
481 fresh fertilized eggs of three Kurdish local chickens (Black with brown neck, White with shank feathering, and White with non-feathering shank) were collected at pre-molting (355 eggs) and post-molting (126 eggs) stages to evaluate external egg traits. A venine caliper was used to determine the length and breadth of eggs to calculate Shape index. Results indicated that egg weight increased in all genetic groups (P < 0.05) at post-molting stage compared with pre-molting stage. There was a significant difference in egg length between pre- and post-molting periods from the black chicken with brown neck and white chicken with shank feather, but not from the white chicken with non-feathering shank. Also, egg breadth was similar between pre- and post-molting periods from black with brown neck and white with shank feather, but was different from white with non-feathering shank. Shape index was also similar between pre- and post-molting periods for white with shank feather, but were significantly different (P < 0.05) for black with brown neck and white with non-feathering shank. The results of this study indicate that egg external traits improved during post-molting period than pre-molting, and variations between egg layers for external traits could be due to the genetic makeup.
Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8528, Japan 2 Japanese Avian Bioresource Project Research Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8528, Japan Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan 4 Present address: College of Agriculture, Ibaraki University, Ami, ...متن کامل
Protective Effect of Curcumin on Hippocampal and Behavior Changes in Rats Exposed to Fluoride During Pre- and Post-natal Period
Introduction: Curcumin, a yellow-pigment, found in the popular Indian spice turmeric (Curcuma longa), poses pharmaceutical applications due to its anti-inflammatory, antioxidant, and chemoprotective properties. Excessive fluoride causes fluorosis leading to neurodegeneration and associated behavioral deficits, particularly in children. This study aimed at investigating the neuroprotective abili...متن کامل
Genetic Analysis of Egg Quality Traits in Bovan Nera Black Laying Hen under Sparse Egg Production Periods
The present research was designed to examine the genetic analysis of egg weight, egg yolk weight and egg albumen weight of Bovan Neva Black laying hens at 25, 51 and 72 weeks. For this purpose, thirty birds were selected from the layer flock in the Babcock University Teaching and Research Farm. They were individually housed in separate labeled battery cage. A total of thirty eggs were collected...متن کامل
effectiveness of hedstroum files and rotary k3 instruments in removal of obturation materials during retreatment in curved canals
چکیده ندارد.15 صفحه اول
BACKGROUND Varicella virus can cause two different diseases: chickenpox and herpes zoster. In 2005 varicella vaccine has been introduced in the Spanish national vaccination schedule for 10-14 years old non-immune people, in order to reduce the severity of the disease. In 2007 a new surveillance protocol with aggregate data for chickenpox and herpes zoster was approved in order to detect any cha...متن کامل
Electroencephalographic and autonomic alterations in subjects with frequent nightmares during pre-and post-REM periods.
Abnormal arousal processes, sympathetic influences, as well as wake-like alpha activity during sleep were reported as pathophysiological features of Nightmare Disorder. We hypothesized that in Nightmare Disorder, wake-like cortical activity and peripheral measures linked to arousals would be triggered by physiological processes related to the initiation of REM periods. Therefore, we examined el...متن کامل
دوره 5 شماره 2
صفحات 91- 95
تاریخ انتشار 2017-10-01
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