Publications by authors named "Yasser Said El-Sayed"

Quercetin (QRT), a potent flavonoid, holds immense mechanistic potential in enhancing various aspects of broiler chicken physiological status. This comprehensive study explores the profound еffеcts of QRT on behavior, productive performance, and immune functions, unraveling the underlying mechanisms behind its efficacy. Four hundred, one-day-old Cobb 500 chicks were placed randomly into 4 supplementation groups (100 birds /group and five replicates) and provided diets enriched with varying concentrations of QRT (0, 200, 400, and 600 ppm) for six weeks.

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Context: Spices and herbs are recognized sources of natural antioxidants that can protect from oxidative stress, thus play an important role in chemoprevention of liver diseases. Ginger is used worldwide primarily as a spicy condiment.

Objective: This study evaluated the ability of ginger extract (GE) to ameliorate oxidative-hepatic toxicity induced by lead acetate (PbAc) in rats.

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The present study was conducted to evaluate the adverse effects of an interaction between low levels of dietary aflatoxins (AF) and Eimeria tenella infection on broiler chicks. A set of 1-day-old chicks were raised for 35 days in the following groups: a control group, a group fed AF, a group fed AF and inoculated with E. tenella (AF + E.

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This study is intended to evaluate the efficacy of vitamin C (VC) in ameliorating the detrimental effects of long-term lead intoxication on the liver, kidneys, brain and testes as assessed by histopathology. A total of forty male Wistar rats (six-weeks-old) was divided into 4 groups: control group; lead-acetate (PbAc)-treated group (20 mgPbAc/kgbwt); PbAc+VC-treated group (20 mgPbAc/kgbwt plus 20 mg VC/kgbwt); and VC-treated group (20 mgVC/kgbwt). The Experimental period was lasted for 60 successive days in which PbAc was administered once daily while VC was supplemented every other day using intra-gastric intubation.

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Species determination of tissue specimens, including blood, is an important component of forensic analysis to distinguish human from animal remains. DNA markers based on a method of species-specific PCR and amplifying the 359-base pair (bp) fragment of the mitochondrially encoded cytochrome-b gene and then digestion with the TaqI restriction enzyme were developed for detection and discrimination of human, cattle, buffalo, horse, sheep, pig, dog, cat and chicken blood samples. The results reveal that PCR-amplification of the gene encoding the species-specific repeat (SSR) region generated 603 bp in cattle and buffalo, 221 bp in horse, 374 bp in sheep, View Article and Find Full Text PDF

Aflatoxicosis and resulting epizootic hepatoma have been reported among a wide range of fish where Aspergillus species-contaminated foodstuffs are incorporated into the diet. Aflatoxin B(1) (AFB(1)) is among the most potent known hepatotoxins and carcinogens. Therefore, it is an important potential toxicant to the most of the popularly cultured fish species.

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The toxic effects of ochratoxin-A (OTA) on sea bass, Dicentrarchus labrax L., have not been previously documented. A flow-through bioassay test system was conducted in two series and a total 180 of adult marine-reared sea bass was used to estimate the acute oral 96 h median lethal concentration (LC(50)) value and behavioral changes of OTA.

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The monosex Nile tilapia, Oreochromis niloticus L., was exposed to subacute concentration (1.46 microg/l) of a pyrethroid insecticide, deltamethrin for 28 consecutive days.

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