Poultry Factory Research Articles

Production and characterization of keratinase fromParacoccus sp. WJ-98

A bacterial strain WJ-98 found to produce active extracellular keratinase was isolated from the soil of a poultry factory. It was identified asParacoccus sp. based on its 16S rRNA sequence analysis, morphological and physiological characteristics. The optimal culture conditions for the production of keratinase byParacoccus sp. WJ-98 were investigated. The optimal medium composition for keratinase production was determined to be 1.0% keratin, 0.05% urea and NaCl, 0.03% K2HPO4, 0.04% KH2PO4, and 0.01% MgCl2·6H2O. Optimal initial pH and temperature for the production of keratinase were 7.5 and 37°C, respectively. The maximum keratinase production of 90 U/mL was reached after 84 h of cultivation under the optimal culturing conditions. The keratinase fromParacoccus sp. WJ-98 was partially purified from a culture broth by using ammonium sulfate precipitation, ion-exchange chromatography on DEAE-cellulose, followed by gel filtration chromatography on Sephadex G-75. Optimum pH and temperature for the enzyme reaction were pH 6.8 and 50°C, respectively and the enzymes were stable in the pH range from 6.0 to 8.0 and below 50°C. The enzyme activity was significantly inhibited by EDTA, Zn2+ and Hg2+. Inquiry into the characteristics of keratinase production from these bacteria may yield useful agricultural feed processing applications.

An outbreak of streptococcal infection in a chicken factory.

A large outbreak of streptococcal skin infection occurred late in the summer of 1978 in a factory which undertakes the slaughter, preparation and packing of chickens. In all, 103 episodes of infection occurred in 82 workers from a total factory establishment of 347. The highest incidence of infection was in the packing department where there was an attack rate of 44%. The routes of introduction of infection into and spread within the factory remain mostly unknown. Following the identification of cases and carriers and the institution of appropriate treatment and control measures the outbreak quickly declined. The responsible organism in the outbreak was Streptococcus pyogenes T-type 3/13/B3264, provisional M-type 'R78/55'. This is the first poultry factory outbreak in England to be reported.

Polytechnical And Labor Training Experience In The Kvakshinskii Secondary School

The Kvakshinskii, rural, secondary school is situated near Kalinin. It has a current enrollment of more than 320 pupils and a faculty of 22 teachers. The school serves the population of nearby state farms and a settlement at the Kalininskaia poultry factory, which is a modern, highly mechanized, production facility. The school's teaching staff works closely with the Party organization and the administration and social organizations of the poultry factory. They conduct joint Party and Komsomol meetings, joint meetings of Komsomol committees, topical evenings, and holidays devoted to Teachers' Day, Agricultural Workers' Day, to the greeting of spring, to Harvest Day, etc. It is taken for granted that both collectives are mutually well informed on the activities, successes, difficulties, and prospective development in economic production and in the school, and that they live up to these targets and plans in the full sense of the word. The Party organization and the administration of the poultry factory consi...