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Register a new userدراسة بعض المؤشرات المظهرية والإنتاجية للهجين الناتج عن تصالب النمط الاسود للدجاج البلدي السوري مع سلالة الفيومي المصرية
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Tishreen University رسالة ماجستير
Publication date
2016
fields
Agricultural Engineering
and research's language is
العربية
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دراسة بعض المؤشرات المظهرية والإنتاجية للهجين الناتج عن تصالب النمط الاسود للدجاج البلدي السوري مع سلالة الفيومي المصرية
No English abstract
References used
سميتنيوف س.ي. تربية الدواجن . كولوس , موسكو 1978
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This research was carried out to study some hattching egg traits and chick weight at
day old in black type of Syrian local hens and Egyptian Fayoumi strain , and study the
differences in egg traits and chicks which come from hybrization between Syr
ian black
male and Fayoumi female.
Results showed that the average egg weight of Syrian hens was 52.33 g and of
Fayoumi hens was 46.86 g .
The fertility rate increased in hybrid egg compared with parents . It was87.94% in
hybrid compared with 84.08% in Syrian hens and 77.22% in Fayoumi strain hens.
The day old hybrid chick weight increased compared with Fayoumi chick. It was 32g
in hybrid chicks while it was 30 g in Fayoumi chicks , and it was lower compared with
black Syrian chicks (35g). Hatchability rate was 89.5% and 92.3% in Syrian local hens
and Egyptian Fayoumi hens respectively .And this rate decreased to 82.6% for the hybrid .
Chicks hatched decreased to 69.2% for hybrid compared with 72.93%for Syrian local hens
and 69.44% for Egyptian Fayoumi hens .
The mortality of hybrid chicks was 3.3% , it was lower compared with mortality of
Fayoumi chicks (6.05%) and higher compared with mortality of Syrian chicks (2.22%).
This study was carried out during 2011- 2013 to determine some qualitative and
quantitative features of some distribution trees of Prunus ursina in different regions of
Syrian coast.7 natural distribution sites were determined and 43 trees were det
ermined as
samples.
22 features of different plant portions were studied using biological
measurements(leaves, flowers, fruits, seeds). Statistical analysis of investigated phenotypes
showed that trees were distributed in 5 groups (A, B, C, D, E) each one considered
phenotype. The results showed existence of one phenotype in several sites (C, D, E) while
(A and B) phenotypes were distributed in one site, while (A) phenotype was located in one
tree only in " Nabeen" site whereas (B) phenotype was located on only half investigated
trees in "Btmaze" site, while the other half distributed in (D) phenotype.
The influence of Red Paprika and Local Safflower in the diets on yolk color
was studied in two experiments of ٨ and ٥ weeks using ٩٠ and ٢٤ laying hens,
respectively; Loghorn hybrids of Lohmann brown and Hy- Lain Brown strain,
were used.
In the f
irst experiment, yellow corn was substituted totally by rye and wheat
and ٤ different amounts of paprika or safflower were tested (٠,٢, ٠,٣, ٠,٤ and
٠,٥٪). In the second experiment the effect of sweet red paprika or hot red
paprika in the diet (٠,٥٪) on yolk color or some of production parameters was
studied.
دراسة بعض الصفات الفيزيولوجية والإنتاجية لطرز من الدخن تحت ظروف الإجهاد المائي: نفذ البحث في مركز بحوث كلية الزراعة بالحسكة - جامعة الفرات وفق تصميم القطاعات العشوائية الكاملة
This research aims to:
Determination of optimal pH values to reach the highest
efficiency of chromium removal in industrial wastewater from
tanneries by chemical deposition.
Access to close concentration of the permitted
concentration of chromium in treated tannery wastewater
according to Syrian Standard No. 2580/2002 (Table 1).
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