439 results about "Milk sample" patented technology

A system for optimising the production performance of a milk producing animal herd is provided. The system comprises a milk sampling apparatus, an analytical apparatus comprising separate equipment for analyzing compounds or parameters that in the presence of compounds indicative of the physiological or nutritional condition of the herd member, generates detectable signals, and apparatus directing a part of the milk sample (directing apparatus) to each separate equipment, which is controlled by data for the physiological and nutritional state of a herd member, so that the directing apparatus is only activated at pre-selected points in time or at pre-selected time intervals in the production and / or lactation cycles. Specific compounds are compounds indicative of mastitis, including beta-N-acetylhexosaminidase (NAGase) E.C. 3.2.1.52 and lactate dehydrogenase (LDH), protein balance, including milk urea nitrogen (MUN) and total protein, ketosis, including acetolactate, beta-hydroxybutyrate, acetone and lipids, fat and state in reproduction cycle, including a steroid or peptide hormone, e.g., progesterone. Furthermore, the system comprises equipment for signal detection to record and process the signals, equipment to store data and equipment to produce data output. Methods for optimizing the production performance of a milk producing animal herd and an apparatus therefor.

The invention discloses milk quality detection equipment and a milk quality detection method. The milk quality detection method comprises the following steps: firstly, selecting three types of carrier gases for detecting volatile gases produced by n types of milk samples so as to obtain n w1s related to the milk content of milk powder; secondly, constituting points (w1, E) from the w1s and the milk content E of the milk powder related to the w1s; thirdly, according to the n points (w1, E), fitting a detection model, and computing the fitting precision R; fourthly, selecting a milk quality predetection model; and finally, computing the milk powder content E of the milk K by a computer according to the milk quality predetection model, and computing the milk powder content. The milk quality detection equipment and the milk quality detection method have the characteristics of capability of quickly detecting the milk powder contents in the milk samples, and relatively high detection accuracy and higher reliability.

The invention provides a determination method by liquid chromatography-electrospray mass spectrometry (LC-ESI-MS / MS) for detecting various phthalate esters in milk simultaneously, belonging to the field of food detection technology. The milk sample is directly extracted by acetonitrile and sodium chloride; a formic acid ammonium acetate solution-carbinol system is taken as a flowing phase for liquid chromatography separation so as to carry out gradient elution; and the quantitative detection is carried out by a mass spectrum detector by adopting the peak area method of an external standard method. The method has high sensitiveness, good exactness and preciseness, reliable specialization and authenticity, is extremely simple and convenient and easy to be applied to practical detection, and can meet the requirement in practical detection excellently.

The invention discloses a fluorescence PCR quick diagnosis reagent box of the zoonosis tuberculosis, which belongs to the biological technology field. A group of nucleotide sequence for detecting the zoonosis tuberculosis is the nucleotide sequence shown from the sequence table SEQ ID No.1 to the sequence table SEQ ID No.12. The content disclosed by the invention comprises a fluorescence PCR primer and a probe sequence for a mycobacterium tuberculosis composite group, mycobacterium tuberculosis, cow mycobacterium and fowl mycobacterium, a fluorescence PCR reaction system, a detection program, a reaction parameter and a judging method of various reagent boxes, and the preliminary treatment and the nucleic acid extraction method of various clinic samples of bacteria fluid, milk sample, blood sample, sputum, fecal sample and lymph nodes. The invention provides diagnosis reagent for the zoonosis tuberculosis diagnosis of which the technology method is special, sensitive and quick and the quality is reliable. The adoption of the reagent box provided by the invention can accomplish the whole process from the sample treatment to the fluorescence PCR detection within a day, and the detection sensitivity can reach the single gene copy or the signal bacterial cell.

A method of collecting a sample of milk while milking a succession of animals comprises diverting a portion of milk from an animal into a flowpath (74, 77) leading to an extraction point (80). The flowpath (74, 77) is dimensioned such that milk flows along the flowpath as a plug occupying the whole of its cross-section and allows some of the milk from the animal to pass the extraction point (80). Thereafter the milk is transferred into a container or other receiver and at least some of the remaining milk of that animal reaching the extraction point.

Method and apparatus for testing a milk for mastitis wherein the milk sample is admixed with a detergent under condition that increase the viscosity of the milk sample; the increased viscosity mixture is subjected to a further procedure for further increasing its viscosity; and the further increased viscosity mixture is then tested for an attribute of somatic cells, such as DNA. This determination is then used to establish if the cow from whom the milk came has mastitis.

The invention relates to a method for detecting tripolycyanamide in milk based on a surface-enhanced Raman activity chip, and belongs to the technical field of detection of additives in foods. The method comprises the following steps: pre-processing a milk sample containing the tripolycyanamide; preparing a substrate with a surface-enhanced Roman activity for detecting a sample to be detected; processing the substrate with the surface-enhanced Roman activity by the sample to be detected; collecting surface-enhanced Raman signals of the tripolycyanamide in the sample to be detected through a Raman spectrograph. According to the special surface-enhanced Raman signals of the tripolycyanamide, the detection of the tripolycyanamide in the milk sample is achieved. Through the special surface-enhanced Raman signals of the tripolycyanamide, the tripolycyanamide is directly distinguished from other molecules in a milk system, so that the content of the tripolycyanamide in the milk is detected. The detection limit of the method accords with the national standard of the tripolycyanamide in the milk, and a quick and sensitive detection method can be provided for the detection on the tripolycyanamide in the milk.