Method for detecting mating opportunity of cow

Abstract

The invention provides a method for detecting the mating opportunity of a cow. The method comprises the following steps of: collecting the urine of the cow urinating 1-2 hours later after last time urination; inserting luteinizing hormone LH detection test paper of the cow into the urine in step 1) for 5-10 seconds, and observing whether a quality control line C and a detection line T in the testpaper develop colors or not after 15-18 minutes: the quality control line C does not develop color and the detection line T develops colors, indicating that the detection result is invalid; if the quality control line C develops color and the detection line T does not develop color, indicating that the luteinizing hormone LH level of the cow is low; if both the quality control line C and the detection line T develop colors, performing contrast with an LH colorimetric card; when the LH is less than or equal to 10mIU / ml, indicating that egg cells of the cow are immature and cannot be mated; whenthe LH is 10-25mIU / ml, indicating that the cow enters an ovulation period, repeating the steps 1)-3) every other 4 hours for detection until the LH reaches 45-100mIU / m, indicating that the ovulationtime of the cow is within 5-10 hours, and then performing mating.

Description

technical field [0001] The invention relates to a detection method, in particular to a method for detecting the mating timing of cattle, and belongs to the technical field of animal detection methods. Background technique [0002] At present, in the breeding process of cattle, the timing of mating or insemination of cattle is usually selected during the natural estrus period of cows. In actual production, it is mainly through testing, observing its behavior, checking the vagina and its secretions, rectal examination and touching the ovary, etc. to judge the ovulation time of the cow, and to guide natural breeding or artificial insemination. Usually 1-2 times of insemination in one estrus period, because it usually takes several hours for the sperm to reach the ampulla of the fallopian tube and finally have the ability to fertilize, and the survival time in the reproductive tract is longer than the time for the egg to maintain the fertilization ability, so it will pass It is...

AI Technical Summary

Problems solved by technology

Usually 1-2 times of insemination in one estrus period, because it usually takes several hours for the sperm to reach the ampulla of the fallopian tube and finally have the ability to fertilize, and the survival time in the reproductive tract is longer than the time for the egg to maintain the fertilization ability, so it will pass It is estimated that the first insemination will be performed several hours before ovulation, and the second insemination will be performed before the estimated loss of egg fertilization ability. However, in the actual production process, the above-mentioned time varies from individual to individual, and it is difficult to accurately grasp it, so it will be fixed Time, the interval between two inseminations is fixed at 8-10 hours, while the ovulation of cattle occurs 4--16 hours after the cessation of estrus, the individual differences are large, and multiple inseminations are required to conceive a cow. However, multiple inseminations will also lead to the production of anti-sperm antibodies in the cow, resulting in infertility in the later stage

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