No abstract

To evaluate chitin (an acetamido-β-glucan) and chitosan (an N-deacetylated product of chitin) as a novel source of N and energy for rumen microbes, the degradabilities of chitin and chitosan were determined in the rumen of sheep fed Italian ryegrass hay as their sole diet. Chitin was degraded in the rumen of sheep, but the rate of degradation was very slow (0.014 h-1) with 18 h lag time for starting degradation. Chitosan was not degraded in the rumen. Results show that neither chitin nor chitosan are effective sources of ruminant feed. A possible utilization of chitosan may be to protect protein from degradation in the rumen. Key words: Chitin, chitosan, ruminal degradation, sheep

Soest (1970).Samples of WRC were taken 2 h after the morning feeding. Thi WRC were mixed thoroughly in situ and a total of 0.i L of random samples from the reticulum and the dorsal

No abstract

This study was conducted as a field study to select the most effective disinfectants for control of the microbial contamination in poultry farms through evaluation of some commercial disinfectants. All tested commercial disinfectants were diluted with sterile tap water and applied at different concentrations (0.5 and 1.0 %) on contaminated surfaces (concrete) by spraying at a rate of 0.5 liter/m 2. The Aerobic Plate Count (APC) on naturally contaminated floor of broiler farm was determined before the application of commercial disinfectants at different concentrations with contact times of 15, 30, 60, and 120 minutes. The results revealed that disinfectants at concentration of 0.5% had little action on the tested pathogens as S. Typhimurium, E. coli and S. aureus after 30 and 60, 90 and 120 minutes contact time. While, application of Virudox-G, Glutarol and Alkadox at concentration of 1% for 120 minutes contact time was efficient and proved 100% reduction either for of the pathogens count. While, Phenodex showed the lowest inhibitory effect on these pathogens.