Abd alhamed Abd alhamed

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Production of Functional Kariesh Cheese by Microencapsulation of
Bifidobacterium adolescentis ATCC 15704
A.M. Abd-Elhamid
Department of Food and Dairy Science andTechnology, Faculty of
Agriculture, Damanhour University, Damanhour, 22516, Egypt
Abstract
Bifidobacterium adolescentis ATCC 15704 was microencapsulated with rennet
gelation of milk proteins. Encapsulated and free Bifidobacterium adolescentis
ATCC 15704 under simulated gastrointestinal conditions and bile tolerance were
estimated. The survivability of encapsulated Bifidobacterium adolescentis
ATCC 15704 and the changes of organic acids in Kariesh cheese during 2 weeks
of cold storage were determined. The study demonstrated that microencapsulation
using rennet gelation of milk proteins increased
the survival of Bifidobacterium adolescentis ATCC 15704 in simulated gastric
conditions. Furthermore, the
results showed that, the survival of encapsulated Bifidobacterium adolescentis
ATCC 15704 in bile solution
was significantly enhanced (p<0.05) compared to the free Bifidobacterium
adolescentis ATCC 15704.
Microencapsulation protected Bifidobacterium adolescentis ATCC 15704 in
Kariesh cheese during cold storage
as compared to free Bifidobacterium adolescentis ATCC 15704. In addition, the
capsules made from rennet
gelation of milk proteins had a positive effect in organic acids during cold storage.
Key words: Bifidobacterium, bile tolerance, microencapsulation, organic acids,
Kariesh cheese
Publish in :
Advance Journal of Food Science and Technology 4(2): 112-117, 2012
ISSN: 2042-4876
© Maxwell Scientific Organization, 2012
Submitted: March 14, 2012 Accepted: March 26, 2012 Published: April 20, 2012
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Oral glucose supplementation improved semen
quality and constituents of seminal and blood
plasma of NZW buck rabbits in the subtropics
Youssef A Attia1
A E Abd El Hamid1
Fulvia Bovera2
Mohamed El-Sayed1
1
Department of Animal and Poultry
Production, Faculty of Agriculture,
Damanhour University, Egypt;
2
Department of Scienze Zootecniche
e Ispezione degli Alimenti, University
of Naples Federico II, Napoli, Italy
Abstract
The effect of different levels of oral glucose supplementation on reproductive
performance of New Zealand white buck rabbits was studied on 12 bucks aged 6–7
months,
randomly divided among four groups from February to September. The treatments
consisted
of supplementing drinking water with 0 (control), 2.5, 5, and 10 g of glucose/L,
respectively.
Semen was collected twice weekly from April through September. Three samples
of blood and
seminal plasma were collected for each treatment during August. Semen quality,
biochemical
constituents of seminal and blood plasma, and testosterone were studied. Oral
glucose
supplementation of 5 or 10 g/L of drinking water significantly increased semen
volume, sperm
motility, sperm concentration, live sperm percentage, total sperm output, and total
live sperm
output and significantly decreased abnormal sperm percentage as compared to the
control
group. Addition of glucose at 5 g/L water significantly increased blood plasma
total protein,
albumin, glucose, alanine aminotransferase, and testosterone hormone compared to
the control
group.
Keywords: rabbit, glucose, semen quality, seminal and blood plasma
Published in :
the following Dove press Journal : Open Access Animal Physiology 17
November 2010
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Effect of phytase with
or without multienzyme supplementation on performance and nutrient
digestibility of young broiler chicks fed mash or crumble diets
Youssef A. Attia,1,2Walid S. El-Tahawy,2
Abd El-Hamid E. Abd El-Hamid,2
Saber S. Hassan,2Antonino Nizza,3
Mahmoud I. El-Kelaway2
1
Arid Land Agriculture Department,
King Abudlaziz University, Jeddah,
Saudi Arabia
2
Department of Animal and Poultry
Production, Damanhour University, Egypt
3
Dipartimento di ScienzeZootecniche
eIspezionedegliAlimenti, Università
di Napoli Federico II, Italy
Abstract
A total of 210 unsexed 1-day old Arbor Acres broiler chicks were wing banded
and randomly distributed among 30 cages of 7 birds per cage keeping equal initial
BW during days 1-20 of age. A factorial design (2×3) was used in which
there were two feed forms (mash vscrumble diet) and three enzyme treatments
(unsupplemented, phytas,e, phytase plus multienzyme).
Each treatment was replicated 5 times with 7 chicks per replicate. Body weight
(BW), body weight gain (BWG) and feed conversion ratio (FCR) of fed chicks
were significantly improved when the crumble diet was administered.
However, feed intake of chicks fed on the crumble feeds was significantly lower
than those fed the mash diet. Digestibility of ether extract and crude fiber was
significantly greater in groups fed the crumble diet than those fed the mash
diet. Enzyme supplementation significantly and similarly increased growth and
production index, and improved FCR. Also greater digestibility of crude protein
and crude ash was observed but growth during days 8-14 of age and crude fibre
digestibility were significantly greater in chicks receiving themultienzyme plus
phytase supplement than those receiving phytase alone.
Crumble feed supplemented with multienzyme resulted in the highest performance
and nutrient digestibility of broilers during days 1-20 of age.
Key words: Broilers, Form of feeds, Enzymes,Phytase, Digestibility.
Published in :Italian Journal of Animal Science 2012; 11:e56
doi:10.4081/ijas.2012.e56
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