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Early female hatching is related to sex differences in biochemical and hematological parameters
(2016-01-01)
We assessed whether earlier hatching time in female compared to male broilers is related to differences in the duration of the actual embryonic development and/or hatching period, hematological parameters and hatchling ...
Hatching Response of Aedes aegypti (Diptera: Culicidae) Eggs at Low Temperatures: Effects of Hatching Media and Storage Conditions
(Entomological Society of America, 2014-12)
In temperate regions, Aedes aegypti (L.) (Diptera: Culicidae) populations remain in the egg stage during the cold season. To ensure the start of a new breeding season, eggs should hatch at the beginning of a favorable ...
Egg temperature and initial brood patch area determine hatching asynchrony in Magellanic Penguin Spheniscus magellanicus
(Wiley Blackwell Publishing, Inc, 2016-01)
In birds, the adaptive significance of hatching asynchrony has been under debate for many years and the parental effects on hatching asynchrony have been largely assumed but not often tested. Some authors suggest that ...
Fuzzy modeling to predict chicken egg hatchability in commercial hatchery
(Poultry Science Assoc Inc, 2012-10-01)
Experimental studies have shown that hatching rate depends, among other factors, on the main physical characteristics of the eggs. The physical parameters used in our work were egg weight, eggshell thickness, egg sphericity, ...
The effect of timing of thermal conditioning during incubation on embryo physiological parameters and its relationship to thermotolerance in adult broiler chickens
(Elsevier B.V., 2004-01-01)
Previously, we reported that thermal conditioning at 39degreesC on days 13-17 of incubation of broiler eggs enabled thermotolerance during post-hatch growth (J. Therm. Biol. 28 (2003) 133). Tolerance to a temperature of ...
Influence of sex, age, and fasting on blood parameters and body, bursa, spleen and yolk sac weights of broiler chicks
(2007-10-01)
The effects of water and feed fasting for 24, 48 and 72 hours post-hatching on blood parameters (mean corpuscular volume, MCV; red blood-cell, RBC; hematocrit, HCT; hemoglobin, HGB; plasma glucose, CGP; plasma total protein, ...
Influence of sex, age, and fasting on blood parameters and body, bursa, spleen and yolk sac weights of broiler chicks
(2007-10-01)
The effects of water and feed fasting for 24, 48 and 72 hours post-hatching on blood parameters (mean corpuscular volume, MCV; red blood-cell, RBC; hematocrit, HCT; hemoglobin, HGB; plasma glucose, CGP; plasma total protein, ...
Non-ventilation during early incubation in combination with dexamethasone administration during late incubation: 1. Effects on physiological hormone levels, incubation duration and hatching events
(Elsevier B.V., 2007-07-01)
This study investigated the effect of non-ventilation of the incubator during the first 10 days of incubation and its combination with dexamethasone administration at day 16 or 18 of incubation on hatching parameters and ...
Non-ventilation during early incubation in combination with dexamethasone administration during late incubation: 1. Effects on physiological hormone levels, incubation duration and hatching events
(Elsevier B.V., 2007-07-01)
This study investigated the effect of non-ventilation of the incubator during the first 10 days of incubation and its combination with dexamethasone administration at day 16 or 18 of incubation on hatching parameters and ...
Effects of storage time on incubating egg gas pressure, thyroid hormones, and corticosterone levels in embryos and on their hatching parameters
(2003-05-01)
Incubating eggs (1,800 total) produced by a commercial flock of Cobb broiler breeders were used to determine the effects of storage duration (3 and 18 d) on gas partial pressure, thyroid hormones, and hatching parameters. ...