Vitamin A:
Death at about 48 hours of incubation
from failure to develop the circulatory system; abnormalities
of kidneys, eyes and skeleton.
Vitamin D:
Death at about 18 or 19 days
of incubation, with malpositions, soft bones, and
with a defective
upper mandible prominent.
Vitamin E:
Early death at about 84 to 96
hours of incubation, with hemorrhaging and circulatory
failure (implicated with selenium).
Vitamin K:
No physical deformities from
a simple deficiency, nor can they be provoked by antivitamins,
but
mortality occurs between 18 days and hatching,
with variable hemorrhaging.
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Thiamin:
High embryonic mortality during
emergence but no obvious symptoms other than polyneuritis
in those that survive.
Riboflavin (Vitamin B):
Mortality peaks at 60 hours,
14 days, and 20 days of incubation, with peaks
prominent early as deficiency becomes severe. Altered
limb and mandible development, dwarfism and clubbing of
down are defects expressed by embryo.
Niacin:
Embryo readily synthesizes sufficient
niacin from tryptophan. Various bone and beak malformations
occur when certain antagonists are administered during
incubation.
Biotin
High death rate at 19 days to
21 days of incubation, parrot beak, chondrodystrophy,
several skeletal deformities and webbing between the toes.
Perosis.
Pantothenic acid:
Deaths appear around 14 days
of incubation, although marginal levels may delay problems
until emergence. Variable subcutaneous hemorrhaging and
edema; wirey down in poults.
Pyridoxine:
Early embryonic mortality based
on anti vitamin use.
Folic acid:
Mortality at about 20 days of
incubation. The dead generally appear normal, but many
have bent tibiotarsus, syndactyly and mandible malformations.
In poults, mortality at 26 days to 28 days of incubation
with abnormalities of extremities and circulatory system.
Vitamin B:
Mortality at about 20 days of
incubation, with atrophy of legs, edema, hemorrhaging,
fatty organs, and head between thighs malposition.
Manganese:
Deaths peak prior to emergence.
Chondrodystrophy, dwarfism, long bone shortening, head
malformations, edema, and abnormal feathering are prominent.
Perosis.
Zinc:
Deaths prior to emergence, and
the appearance of rumplessness, depletion of vertebral
column, eyes underdeveloped and limbs missing.
Copper:
Deaths at early blood stage
with no malformations.
Iodine:
Prolongation of hatching time,
reduced thyroid size, and incomplete abdominal closure.
Iron:
Low hematocrit; low blood hemoglobin;
poor extra-embryonic circulation in candled eggs.
Selenium:
High incidence of dead embryos
early in incubation.
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Stages in chick embryo development
 Chick embryos that have been incubated for approximately 48, 72 and 96 hours after fertilization will be available for you to examine. However, specimens of similar ages post-fertilization may show a wide variation of maturation stages. The incubation times provide only an estimation of how far development of the embryo will have progressed. The temperature of incubation (which may be different among eggs depending on their locations within the incubator), as well as the rate of growth of the individual embryo itself will affect the overall ..... More Description about incubation periods, sizes, eggs in clutch
Valuable Information For The Beginner To The Most Advanced Breeder (Collection of Books, videos, etc)
Incubator setting for parrot/parakeets
Click
here to View total Incubation time to Hatch, time for transfer
to hatcher, Dry and Web bulb temperature for common bird:
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Grouse, Guinea, Lovebird, Macaw, Mynah Parakeet, Budgerigar,
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