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
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
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
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
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
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