DIAGNOSTIC OF PREGNANCY IN NUTRIA
DOI:
https://doi.org/10.31548/ujvs2019.03.006Abstract
The article is devoted to the finding a way to determining pregnancy of nutria. This gives an opportunity to improve reproduction what will improve profitability of nutrition as an animal industry.
Known for today’s ways to determine pregnancy of nutria have shortcomings, what limits their use. To this end we tested ultrasonography method and vaginal cystoscopy (colposcopy). The methods are modern, simple and easy to use. We compared these methods with the method of bimanual palpation of the abdominal wall, which is commonly used in farms.
We installed, that the using of ultrasonography method can detect the fact of pregnancy within 20 days after insemination. The ultrasonography method allows us to evaluate the viability of the fetus in the palpitation.
The method of bimanual palpation reveals pregnancy for 48 ─ 55 days.
Timely diagnosis of pregnancy helps to prevent abortion in the early terms and avoid strokes in its absence.
We discovered that the vaginal cystoscopyallows you to set the optimal time for insemination of nutria,but it is not informative to determine pregnancy of them, because the picture of vaginal swab during all period of pregnancy is the same as in diestrus period. This can be explained by the fact, that the progesterone, that affects the structure of the vaginal cells, produces by the yellow body, which persists for 60 days after the estrus, regardless of whether the fertilization occurred or not.
In the future it is envisaged to use ultrasound diagnostics in the comprehensive assessment of embryo/fetal development and development potential in nutria.
Keywords: the ultrasonography method, the method of bimanual palpation, productive bubble, amnion, embryo, fetus, colpocytoscopy.
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