IMPACT OF THE USE OF A PROBIOTIC (Enterococcus faecium) ON ZOOTECHNIC PERFORMANCE AND LIPIDID PROFILE IN BROILER CHICKEN

This study was conducted to determine the effect of probiotic Enterococcus faecium DSM 7134 feed supplementation on animal performance of broilers poultry when compared to control animals. The determination of lipid status parameters on day 51 was performed on 5 chicks randomly selected in each group.. Biochemical analyzes included total cholesterol, triglycerides, high density lipoproteins (HDL) and low density lipoproteins (LDL). Individual live weight, consumption index and mortality rate were measured at the end of the rearing phases. The results obtained showed that the addition of Enterococcus faecium significantly improved live weight throughout the rearing period without significant charge on FCR and mortality rate. The experimental group had significantly higher cholesterol, triglyceride and HDL levels.

USE OF CHROMAGAR ORIENTATION FOR PRESEMPTIVE IDENTIFICATION OF ENTEROCOCCI AND CHARACTERIZATION OF ANTIMICROBIAL RESISTANCE OF THE ISOLATES

This study was conducted to evaluate the use of CHROMagar Orientation for presumptive identification of enterococci from poultry, and to characterize the antimicrobial resistance of the isolates. Strains identification with conventional methods allowed confirmation of Enterococcus genus membership of all of the isolates on CHROMagar orientation (100%). Of the 141 enterococci isolates obtained from chicken, 81 (57.45%) were identified as Enterococcus faecalis and 60 (42.55%) as Enterococcus faecium. The antimicrobial susceptibility test presented high level of resistance to Tetracycline (89%) and Erythromycin (65%), low level of resistance to High Level of Streptomycin, Penicillin and Ciprofloxacin (13%, 10% and 9% respectively). Few of isolates were resistant to Chloramphenicol (2%). All the strains were susceptible to High Level of Gentamycin, Ampicillin, Vancomycin and Nitrofurantoin. The predominant phenotype of resistance pattern identified in both E.faecalis and E.faecium was (Erythromycin -Tetracycline)

EVALUATION OF SEMEN QUALITY IN RABBIT OF LOCAL ALGERIAN POPULATION AND SYNTHETIC LINE IN THE SUMMER SEASON: A COMPARATIVE STUDY

The aim of our study was to compare the libido and semen characteristics in 24 rabbits of local and synthetic line during summer season. Results showed that both breeds had similar (p ˃0.05) libido (13.92 vs 16.85 s). Gel free volume (0.88 vs. 0.87 mL), pH (7.51 vs. 7.65), and live sperm (56.21 vs. 55.88%) were similar. Local population had higher semen concentration (398.50 x106 /mL vs. 328.90 x106 /mL) and percentage of abnormal spermatozoa (36.54 vs 30.28%). Massal and individual motility (p=0.006 and p=0.008) were significantly increased in local population. Kinetic traits for Local population were significantly greater (P<0.05), except for VCL, ALH and BCF. We conclude that, rabbit bucks of local population had a good ability of adaptation to produce in a hot climate