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Tamer El Feky

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Papers by Tamer El Feky

Research paper thumbnail of Comparative Study Between Traditional Methods, Commercial Biochemical Test and PCR for Identification of Campylobacter Species Isolated from Poultry Farms

Suez Canal Veterinary Medical Journal. SCVMJ, Jun 1, 2023

Campylobacter spp. causes severe issues in chickens. In this investigation. Campylobacter species... more Campylobacter spp. causes severe issues in chickens. In this investigation. Campylobacter species were isolated (182) in Dakahlia Governorate's from 440 broilers and 440 ballade breeds. Campylobacter coli 42 isolates (4%)and Campylobacter jejuni140isolates (16%). For C. jejuni, rates of recovery from various internal organs were 60%, 24%, 10%, and 5%, from the cloacal swab, heart, liver, and gizzard respectively. The morphological studies revealed that the majority of species from Campylobacter are motile, survive at 37-42C o , and are G-ve, slender spirally curled. They require 5%O2, 85%N2 and 10%CO2 to create a colony that looks like a dew drop on mCCDA media. By using API20, the suspected isolates were identical to typical Campylobacter

Research paper thumbnail of Impacts of Fortifying Nile Tilapia (Oreochromis niloticus) Diet with Different Strains of Microalgae on Its Performance, Fillet Quality and Disease Resistance to Aeromonas hydrophila Considering the Interplay between Antioxidant and Inflammatory Response

Antioxidants

The oxidative stress facing fish during intensive production brings about diseases and mortalitie... more The oxidative stress facing fish during intensive production brings about diseases and mortalities that negatively influence their performance. Along with that, the increased awareness of omega-3 polyunsaturated fatty acids (omega-3-PUFAs) health benefits has been triggered the introduction of alternative additives in aqua feed that cause not only modulation in fish immune response but also fortification of their fillet. In this context, the role of microalgae mix (NSS) containing Nannochloropsis oculate and Schizochytrium and Spirulina species, which were enriched with bioactive molecules, especially EPA and DHA, was assessed on Nile tilapia’s performance, fillet antioxidant stability, immune response, and disease resistance. Varying levels of NSS (0.75%, 1.5%, and 3%) were added to Nile tilapia’s diet for 12 weeks and then a challenge of fish with virulent Aeromonas hydrophila (A. hydrophila) was carried out. Results showed that groups fed NSS, especially at higher levels, showed ...

Research paper thumbnail of Comparative Study Between Traditional Methods, Commercial Biochemical Test and PCR for Identification of Campylobacter Species Isolated from Poultry Farms

Suez Canal Veterinary Medical Journal. SCVMJ, Jun 1, 2023

Campylobacter spp. causes severe issues in chickens. In this investigation. Campylobacter species... more Campylobacter spp. causes severe issues in chickens. In this investigation. Campylobacter species were isolated (182) in Dakahlia Governorate's from 440 broilers and 440 ballade breeds. Campylobacter coli 42 isolates (4%)and Campylobacter jejuni140isolates (16%). For C. jejuni, rates of recovery from various internal organs were 60%, 24%, 10%, and 5%, from the cloacal swab, heart, liver, and gizzard respectively. The morphological studies revealed that the majority of species from Campylobacter are motile, survive at 37-42C o , and are G-ve, slender spirally curled. They require 5%O2, 85%N2 and 10%CO2 to create a colony that looks like a dew drop on mCCDA media. By using API20, the suspected isolates were identical to typical Campylobacter

Research paper thumbnail of Impacts of Fortifying Nile Tilapia (Oreochromis niloticus) Diet with Different Strains of Microalgae on Its Performance, Fillet Quality and Disease Resistance to Aeromonas hydrophila Considering the Interplay between Antioxidant and Inflammatory Response

Antioxidants

The oxidative stress facing fish during intensive production brings about diseases and mortalitie... more The oxidative stress facing fish during intensive production brings about diseases and mortalities that negatively influence their performance. Along with that, the increased awareness of omega-3 polyunsaturated fatty acids (omega-3-PUFAs) health benefits has been triggered the introduction of alternative additives in aqua feed that cause not only modulation in fish immune response but also fortification of their fillet. In this context, the role of microalgae mix (NSS) containing Nannochloropsis oculate and Schizochytrium and Spirulina species, which were enriched with bioactive molecules, especially EPA and DHA, was assessed on Nile tilapia’s performance, fillet antioxidant stability, immune response, and disease resistance. Varying levels of NSS (0.75%, 1.5%, and 3%) were added to Nile tilapia’s diet for 12 weeks and then a challenge of fish with virulent Aeromonas hydrophila (A. hydrophila) was carried out. Results showed that groups fed NSS, especially at higher levels, showed ...

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