000			03040cam a2200349 a 4500
003			EG-GiCUC
005			20250223031454.0
008			160413s2015 ua f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.07.03.M.Sc.2015.Am.E
100	0		_aAmal Ahmed Abdelhalim
245	1	0	_aEffect of heat storage conditions of grandparent eggs on chick quality and productive performance / _cAmal Ahmed Abdelhalim ; Supervised Fatma Rasmy Mohamed , Hassan Bayoumi Gharib , Adel Abdalmonem Desoky
246	1	5	_aتأثير المعاملات الحرارية أثناء تخزين بيض جدود التسمين على جودة الكتكوت و الأداء الإنتاجى
260			_aCairo : _bAmal Ahmed Abdelhalim , _c2015
300			_a83 P. ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Agriculture - Department of Animal Production
520			_aThe present study was carried out to evaluate whether heating hatching eggs before or during long storage periods, would improve the hatchability traits and productive performance of progeny. A total number of 2700 hatching eggs were collected from broiler breeders (arbor acres) grandparents D line flock at 29 weeks old. Eggs were transported to the hatchery in three groups (900 eggs each) according to the storage periods for 7, 14 or 21 d. All collected eggs were stored in a special egg holding room at 17{u00BA}C and 75 % RH. All eggs in each group were weighed and numbered individually and subdivided into three subgroups according to pre incubation heating treatment as follows: No heating (control), heating eggs 2 hrs., each 3 d during storage (HDS) and 6 hrs., before the storage period. The heating treatment was at temperature of 37.5{u00BA}C and 55 % RH. All chicks were housed in an open system house in separate floor pens. Chicks were maintained under similar environment and management conditions such as temperature, scheme ventilation system, lighting schedule and feeding program stated by the Cairo poultry company (CPC), guideline. The results show that longer storage period without heating had negative effects on egg weight, egg shell thickness, yolk height, yolk index, albumen weight and albumen height. Also, the apparent fertility, hatchability of fertile eggs and hatchability of total eggs were significantly lowered in eggs stored for longer period. Moreover, higher percentage of early, late and total embryonic mortality; piped life and culled hatch chicks were associated with longer egg storage period without heating
530			_aIssued also as CD
653		4	_aEgg storage
653		4	_aHatchability
653		4	_aPre-incubation heating
700	0		_aAdel Abdalmonem Desoky , _eSupervisor
700	0		_aFatma Rasmy Mohamed , _eSupervisor
700	0		_aHassan Bayoumi Gharib , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aSamia _eCataloger
942			_2ddc _cTH
999			_c55999 _d55999