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Delayed start of full incubation is related to a delayed brood patch development in Magellanic penguins
(Taylor & Francis Ltd, 2016-05)
Capsule: Most bird species start full incubation before the clutch is complete, others long after laying the last egg, gradually increasing the incubation temperature as incubation progresses, as is the case in Magellanic ...
Female and male rufous horneros eject shiny cowbird eggs using a mental template of the size of their own eggs
(Elsevier Science, 2020-09)
Hosts of interspecific brood parasites often evolve antiparasitic defences, like the recognition and rejection of parasite's eggs. Most hosts use differences in coloration and maculation to discriminate between their own ...
Effect of breeder age on eggshell thickness, surface temperature, hatchability and chick weigh
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2012-03-01)
Two experiments were carried out to study the effect of breeder age on incubation parameters (hatchability, eggshell thickness, egg surface temperature and chick weight). In Exp. 1, fertile eggs (30- and 60-wk-old breeders) ...
Effect of breeder age on eggshell thickness, surface temperature, hatchability and chick weigh
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2012-03-01)
Two experiments were carried out to study the effect of breeder age on incubation parameters (hatchability, eggshell thickness, egg surface temperature and chick weight). In Exp. 1, fertile eggs (30- and 60-wk-old breeders) ...
Effect of In Ovo Ascorbic Acid Injection and Thermal Manipulation During Incubation on Intestine Morphology of Broilers Reared under Cold and Heat Stress
(Facta-fundacio Arnco Ciencia Tecnologia Avicolas, 2022-01-01)
It was investigated if pre-incubation ascorbic acid (AA) injection in fertile eggs incubated at high temperature impacts the performance, the yield of carcass and parts, and the intestine morphology of broilers reared under ...
Effects of intra-egg injection of vitamin c on the eggshell mineral absorption, embryo mortality and hematological variables in chicks at hot incubation temperature
(2013-01-01)
This study examined whether preincubation injection of vitamin C intra-eggs influences the eggshell mineral absorption, embryo mortality and hematological characteristics of chicks from eggs incubated at usual or hot ...
Effect of In-Ovo Ascorbic Acid Injection on the Bone Development of Broiler Chickens Submitted to Heat Stress During Incubation and Rearing
(Facta-fundacio Arnco Ciencia Tecnologia Avicolas, 2016-01-01)
This experiment was conducted to evaluate the effect of in-ovo ascorbic acid (AA) injection on the bone development of broilers submitted to heat stress during incubation and rearing. One thousand (1,000) Cobb (R) fertile ...
Heat loss of fertile eggs on the road between the hatchery and hatcher
(2016-01-01)
The microenvironment around the fertile egg on incubation process can influence the development of the embryo and reflect on the hatching rate in the post-hatching performance, and also the quality of the hatched chicks. ...
Effect of temperature on incubation period, embryonic mortality, hatch rate, egg water loss and partridge chick weight (Rhynchotus rufescens)
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2014)