Enhancing egg production and quality by the supplementation of probiotic strains ( and ) improved amino acid digestibility, intestinal health, immune response, and antioxidant activity.

This study focused on evaluating the influence of and strains on egg production, egg quality, immune response and antioxidant function, apparent fecal amino acid digestibility, and jejunal morphology when supplemented as probiotics in the diets of laying hens in the peak phase. A total of 288 healthy 30-week-old Hy-Line Brown laying hens were arbitrarily assigned to four dietary groups, which included control diet and control diet supplemented with 0.02% zlc-17, lwc-13, or zlb-z1, for 84 days.

[Elementary SERS spectroscopy studies of three kinds of pathogens in Ag colloids prepared by microwave method].

The normal Raman (NR) and surface enhanced Raman spectroscopy (SERS) for Alternaria alternate, Colletotrichum musae, and fusarium suspensions were measured by a portable Raman spectrometer (785 nm). The result indicates that the silver colloid prepared by microwave method shows high enhancement of Raman scattering for the three kinds of pathogens. Comparing SERS spectrums of the three kinds of pathogens, there are some similarities.

[SERS spectroscopy study of three pathogenic bacteria].

The SERS spectra of staphylococcus aureus, proteus, and Escherichia coli was obtained on colloidal Ag nanoparticles prepared by the microwave method with the portable Raman spectrometer. Staphylococcus aureus have obvious Raman vibrating peak at 725, 1 330 and 1 450 cm(-1), proteus have obvious Raman vibrating peaks at 650,725,950, 1 325 and 1 463 cm(-1), while E. coli have obvious Raman vibrating peaks at 650, 950, 1 125, 1 242,1 320 and 1 457 cm(-1).