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Register a new userThe effect of unhealed navel on yolk sac content absorption and growth of small intestinal villi in new hatched chicks of broiler
تأثير عدم التئام السرة على امتصاص محتويات كيس المح و على نمو الزغابات المعوية عند صيصان الفروج حديثة الفقس
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Aِl-Baath University ورقة بحثية
Publication date
2016
fields
Veterinary Medicine
and research's language is
العربية
Created by
Shamra Editor
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مع اقتراب موعد الفقس يدخل كيس المح المتبقي تجويف البطن عبر سرة الصوص ثم تلتئم السرة بشكل كامل. توظف محتويات كيس المح المتبقي بعد الفقس من أجل النمو بشكل عام بما في ذلك نمو الزغابات المعوية. يهدف هذا البحث إلى التأكد من وجود أي تأثير لحالة السرة على نمو الزغابات المعوية. جمعت عينات الصائم من 200 صوص من عمر يوم و حتى 5 أيام بمعدل 20 صوص لكل يوم و قسمت لمجموعتين: ملتئمة و غير ملتئمة السرة. أظهر هذا البحث و لأول مرة وجود تأثير سلبي للسرة الغير ملتئمة على نمو الزغابات المعوية كما أظهرت نتائج هذه الدراسة من خلال قياس المعايير الشكلية للزغابات المعوية أن ارتفاع الزغابة و مساحة سطحها أكبر في الصيصان الملتئمة السرة مقارنة بالصيصان الغير ملتئمة السرة.
By the time of hatching, the residual yolk sac (RYS) should be completely internalized into the body cavity of the chick through the navel, then the navel should be completely closed (healed). After hatching, the RYS contents are used for general growth including growth of the small intestine. The aim of this study was to verify if there is any effect of navel condition on the growth of small intestinal villi. Jejunum samples from 200 new hatched chicks (at the age of 1 up to 5 days), with the average of 20 chicks per day were obtained, and divided into 2 groups: healed navels and unhealed navels, which were collected and studied histologically. For the first time, this study demonstrated the negative effect of unhealed navel on the growth of small intestinal villi. The results of this study also demonstrated by Morphometric Parameters Measurements of small intestinal villi that the high and the surface areas of villi were increased in healed navel chicks in comparison with unhealed chicks.
References used
Alongi, D., and Johnson, P., (1998): Digestive Landscapes Exploring surface area in the intestine. A & P TECHNOLOGIST, pp: 175-184
Decuypere, E., Tona, K., Bruggeman, V., Bamelis, E., (2001): The day-old chick: a crucial hinge between breeders and broilers. World’s Poultry Sci J. 57:127–138
Dibner, J. J., and C. D. Knight. 1999- Early feeding and gut health in hatchlings. Int.Hatchery Practice 14(1). Positive Action Publications, Ltd., Middlesex, NJ
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The research was carried out on (960) broiler chicks of the hybrid Hibrd in
the Poultry Unite of Kharabo–Agriculture Faculty–Damascus University,
during 27/10/2003 and 23/12/2003.
The chicks were distributed randomly since the first day of age int
o four
experimental groups, every group contained 240 chicks distributed as four
replicates, every replication contained 60 chicks, the area of the replication was
5.5m2 and the density was 11 chicks/m2. Every replication is an independent
sector from byre is open type on deep litter, all conditions of keeping and
caring were the same for all birds of replications.
The purpose of research was to study of effect of using different levels of the
energy and raw protein into mixtures of (pre-starter) since the first day until
sixth day of age on absorption of yolk sac, growth of digestive system ,and some
productive parameters of broiler. 48 chicks were dissected, the chicks were
distributed as 16 chicks in the first day and 16 chicks in the fourth day and 16
chicks in the sixth day of age, from every group 4chicks were evaluated.
An experiment was carried out using 120 unsexed chicks of a
commercial broiler breed taken from a hatchery nearby the farm of
the experiment. When the chicks started to hatch the chicks were
collected without the need to complete the operation of
hatching to
ensure that the hatching chicks were hatched at the same time.
The chicks were distributed into four groups of each group divid into 6
sub groups each sub group contains 5 chicks. The chicks were fed
different diets.
Two experiments were conducted to evaluate the effect of ascorbic acid
(AA) during egg incubation on development of broiler chickens of a
commercial stock. In Experiment ١, eggs with living embryos were injected at
١٥ d of incubation with ٠٫١ ml o
f saline solution containing either ٣ or ١٢ mg of
AA per egg and uninjected control. Body weights of each treatment were
determined weekly from hatch to ٦ wk of age. In Experiment ٢, the treatments
at ١٥ d of incubation were as follows: ١) eggs injected with ٣ mg of AA and
then cooled at ٢٢° C for ٢٤ h; ٢) eggs dipped in ٣٪ solution of AA for ٣ min
and then cooled at ٢٢° C for ٢٤ h; and ٣) control. Embryo weight at ١٩ d of
incubation, hatchability and body weights of the hatched chicks were
determined.
hybrid commercial chicks (Hubbard Flex) were A total of /450/
reared from 1 to 42 days of age. Chicks were distributed into five
groups; each group contained 90 birds within three replicates. Five
diets were used; the first was the traditional die
t (control group) and
the others differed in the growth promoters added and were as
following: nutritional antibiotic (Lincomycin) for the second group,
probiotic (Bacillus subtilis) for the third group, prebiotec (manna
oligosaccharide) for the forth group and finally a mixture of organic
acids for the fifth group.
An experiment was carried out using 280 unsexed chicks of a
commercial broiler breed taken randomly from a hatchery after the
start of hatching. The chicks were distributed into four groups of 70
chicks each. The chicks were fed a certain type of
mash feeding for
7 days as follows:
The chicks of the 1st group were given the basal diet directly after
hatching containing 1.2% lysine, This diet is conformed to the
American feed tables of (NRC, 1994).
The 2nd and the 3rd group of chicks were given the diet directly
after hatching but containing 1.45%, 1.70% lysine respectively, and maintaining the rest of the nutrients as in the basal diet.
The chicks of 4th group were given the diet directly after hatching,
but containing 24% protein, and maintaining the rest of the
nutrients as in the basal diet.
After 7 days the chicks of four groups fed a broiler pellet
commercial diet until the age of 42 days.
The results showed the importance of adding lysine to the diet
directly after hatching on the average live weight at the end of the
first week, the differences were significant (P ≤ 0.05) between the
chicks of the third group compared to chicks of the first group. It
was also noted that the increase in lysine in the diet is better than
increasing the crude protein to 24% (P ≤ 0.01) on the average live
weight at the end of the first week. No significant differences were
noticed among the average live weight of the chicks of all groups at
the end of the experiment
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