A compound lactic acid bacteria teat cleaning solution for improving milk teat micro-ecological system
A technology of compound lactic acid bacteria and micro-ecological system, applied in the field of micro-ecological preparations, can solve problems such as excessive iodine content in milk and poor effect of bovine mastitis bacteria, and achieve the goals of controlling the number of somatic cells, increasing milk production, and improving the micro-ecological system Effect
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[0037] The preparation method of compound lactic acid bacteria nipple cleaning liquid of the present invention comprises the steps:
[0038] a. Activation of strains: Lactobacillus plantarum L.plantarum SCI-01 and L.plantarum SCI-02 frozen at -80°C were inoculated in MRS liquid medium and cultured at 37°C for 24 hours, and then subcultured twice to obtain activation strains of bacteria;
[0039] b. Preparation of fermentation medium: 50kg of sucrose, 20kg of yeast powder, 10kg of soybean peptone, 0.8kg of Tween-80, 1000L of water, fully dissolved and then sterilized at 121°C for 15 minutes;
[0040] c. Preparation of seed culture solution: inoculate the above-mentioned activated strains in the fermentation medium with an inoculation amount of 1%, and mix and ferment culture at 37°C. During the fermentation process, the pH is controlled to be above 5.9 by adding ammonia water until the acid production stops, and no longer Fermentation was terminated when ammonia water was adde...
Embodiment 1
[0041] Embodiment 1 Quantitative detection of Lactobacillus, Escherichia coli, Streptococcus agalactiae and Staphylococcus aureus in milk samples by fluorescent quantitative PCR technology, real-time monitoring of the above-mentioned microorganisms in the trial process of the composite lactic acid bacteria teat cleaning solution of the present invention Changes in the content of milk. The Fourier online 400 system was used to measure the change of the number of somatic cells in milk during the trial process of the cleaning solution. The plate count method was used to detect the changes in the total number of colonies, lactic acid bacteria, coliforms, staphylococcus, shigella and salmonella in milk before and after the test.
Embodiment 2
[0042] Example 2 Fourier online 400 system was used to measure the changes of somatic cell number, lactose rate, protein rate and total solids in milk during the trial process of the cleaning solution of the present invention. The melanin test method was used to determine the total number of bacteria in milk according to the time of melanin fading. The changes in the daily milk production of the experimental cows before and after the statistical test were calculated.
[0043] Research methods:
[0044] 1. Extraction of metagenomic DNA from milk samples
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