Publications by authors named "A Messai"

The combination of experimental measurements and simulations provides valuable insights into the performance and limitations of gamma-ray spectrometry, especially within a specified energy range. This study investigates the impact of cross-section variations on the response of high-purity germanium (HPGe) detectors, focusing on the energy range from 53 keV to 1408 keV. Monte Carlo simulations using the MCNP5 code with two different cross-section libraries, ENDF/B.

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Poultry farming has developed into one of Algeria's most productive industrial farming because of the growing demand for sources of protein among Algerian society. Laying hen feed consists mainly of cereals, which can be contaminated with molds and subsequently with their secondary metabolites known as mycotoxins. These later can pose a serious danger to the production and quality of eggs in the commercial layer industry.

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Background: Some antimicrobials could adversely affect sperm quality during sperm cryopreservation and antibiotic treatment with subsequent effects on fertility outputs. To our knowledge, no similar studies have been conducted on breeding roosters, especially for oxytetracycline (OTC).

Objective: To investigate both in vitro and in vivo impact of oxytetracycline on sperm parameters in breeding roosters.

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Background And Aim: Avian pathogenic (APEC) is the causative agent of colibacillosis, one of the most prevalent bacterial diseases responsible for significant economic losses in the poultry industry worldwide. This study aimed to assess the antimicrobial resistance (AMR) patterns of APEC isolates recovered from poultry in east Algeria and estimate the prevalence of extended-spectrum β-lactamase (ESBL)-producing isolates.

Materials And Methods: In the slaughterhouse of Batna City (Algeria), livers indicating colibacillosis were sampled from 204 suspected carcasses with growth retardation and generalized congestion.

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Background And Aim: The incorporation of herbs and species has been shown to enrich the food with antioxidants and bioactive antimicrobial compounds, thereby preserving the safety and productivity of broiler chicken production. This study aimed to determine the effects of three phytogenic feed additives (PHT) on certain zootechnical and hematobiochemical parameters in broiler chickens. .

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