BACTERIOLOGICAL EVALUATION OF POULTRY FEEDS AND FEED INGREDIENTS IN ASSIUT GOVERNORATE

AHMED, M.M.; SOTOHY, A.S.; ISMAIL, A.A.; ISMAIL, M.A.

doi:10.21608/avmj.1995.184291

BACTERIOLOGICAL EVALUATION OF POULTRY FEEDS AND FEED INGREDIENTS IN ASSIUT GOVERNORATE

Document Type : Research article

Authors

10.21608/avmj.1995.184291

Abstract

Eighty two samples of apparently normal poultry feeds and feed ingredients were collected from some poultry processing plants in different localities at Assiut Governorate (Beni-Mor; Arab El-Awamer, Dronka; Rifa and Manfalout). The samples included, poultry rations (22), and concentrate mixtures (18) feed ingredients (42). The pH values were slightly acidic and their over all mean values ranged from 5.54+0.51 to 6.72+0.02 and from 5.51+0.0.16 to 6.66+0.03 before and after autoclaving, respectively. The aerobic plate count showed a high bacterial load varied from (3.07+1.021) 104 to 10.8+1.6) 104 with minimum count of 1x10 and a miximum of 2.8x10 CFU/g. The obtained results revealed that the lowest colony count was in the white corn while the wheat bran showed the highest colony count. The mean values of
the total coliform/g ranged from (1.22+0.46) 10 to (2.13+0.62) 10* with a minimum count of 1.2x102 in soyabean meal and a maximum total coliform count of 5.7x10* in laying rations. Typical E. coli could be recovered from the final rations and most of the feed ingredients. The mean count varied from zero to (1.10+0.54)103.The examined samples revealed that both the concentrate mixtures and white com were free from E.coli, Faecal streptococci count/100g ranged from zero to (2.50+0.97)102 and the maximum count was recorded in the wheat bran samples. However, soyabean meal, yellow corn and white com are free from Cl. perfringens but the count was high in case of the concentrate mixtures. The mean values ranged from zero to 7.7x10'/g. Wide varities of pathogenic and potentially pathogenic organisms were isolated with total over all incidence percentages of Stap < /em>h. epidermidis (14.52%), Strept. faecalis (9.28%), Staph. aureus (8.06%), Proteus rettgeri (6.85%), E.coli (6.45%), Cl. perfringens (6.45%), Alcaligenes faecalis (5.64%), Pseudomonas aeruginosa (4.44%) beside other enteric organisms with variable total over all percentages. The hygienic significance of the isolates and the protective measures that must be considered were discussed.