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volume 45 issue 2 (june 2011) : 88 - 94

STUDY ON THE RELATIONSHIPS OF INTRAVAGINAL ELECTRICAL IMPEDANCE AND PLASMA LEVEL OF PROGESTERONE AND ESTRADIOL-17B IN ESTRUS SYNCHRONIZED SOWS IN PREDICTION OF THE OPTIMAL INSEMINATION TIME IN PIG

T
Tefera Yilma*
A
Axel Sobiraj1
1Department of Clinical Studies, School of Veterinary Medicine, Addis Ababa University, Debre Zeit, Ethiopia

  • Submitted|

  • First Online |

  • doi

Cite article:- Yilma* Tefera, Sobiraj1 Axel (2025). STUDY ON THE RELATIONSHIPS OF INTRAVAGINAL ELECTRICAL IMPEDANCE AND PLASMA LEVEL OF PROGESTERONE AND ESTRADIOL-17B IN ESTRUS SYNCHRONIZED SOWS IN PREDICTION OF THE OPTIMAL INSEMINATION TIME IN PIG. Indian Journal of Animal Research. 45(2): 88 - 94. doi: .

ABSTRACT

An experiment aimed at determining the association of impedance values with plasma level of progesterone and estradiol-17b in estrus synchronized sows for prediction of optimal insemination time was conducted in Large Animal Clinic for Theriogenology and Ambulatory Service of Faculty of Veterinary Medicine, Leipzig University, Germany. Measurements of intravaginal electrical impedance (IEI) were carried out through out the estrous cycle (synchronization phase and estrus period) using a 2-electrode impedance-measuring instrument (INOTEC FEG GmbH, Germany). Values of impedance measurements were analyzed based on clinical findings including ultrasongraphy, and endocrine parameters (plasma concentration of progesterone and estradiol-17b). Blood samples were collected parallel with measuring of IEI in order to determine plasma progesterone and estradiol-17b concentrations using radioimmunoassay (RIA). High values of impedance were measured during synchronization phases/diestrus period, and low IEI values coincided with the pre-ovulatory estradiol-17b peak, at the height of standing heat. IEI values began to decline, right after withdrawal of Regumate administration, about 2 to 3 days before the onset of standing heat. Average low values of impedance were registered within 36 to 52 hours at times of standing heat. Relationship among plasma levels of estradiol-17b and progesterone and values of IEI during estrus period was evident: Low IEI values were significantly correlated to maximum plasma levels of estradiol-17b (r = 0.-24) (P

REFERENCES

  1. Brüssow, K.P., Ratky, J., Kanitz, W., Becker, F., 1990. The relationship between the surge of LH induced by exogenous Gn-RH and the duration of ovulation in gilts. Reproduction in Domestic Animals, 25, 255-259
  2. Baer, C., Bilkei, G., 2004. The effect of intra-vaginal applied GnRH-agonist on the time of ovulation and subsequent reproductive performance of weaned multiparous sows. Reproduction in Domestic Animals, 39(5), 293-7
  3. Belstra, B.A., Flowers, W.L., See, M.T., 2004. Factors affecting temporal relationships between estrus and ovulation in commercial sow farms. Animal Reproduction Science, 84(3-4):377-94
  4. Clark, J.R., Komkov, A., Wiginton, L.W., Tribble,. L.F., 1986. Time of onset of estrus in gilts. Theriogenology, 26, 639-643
  5. Cox, N.M., Britt, J.H., 1986. Pulsatile secretion of luteinizing hormone and follicle stimulating hormone and their relationship to secretion of estradiol and onset of estrus in weaned sows. Animal Reproduction Science, 12, 201-211
  6. Dusza, L., Opalka, M., Kaminska, B., Kaminski, T., Ciereszko, R.E., 1996. The relationship between electrical resistance of vaginal mucus and plasma hormonal parameters during periestrus in sows. Theriogenology, 45, 1491-1503
  7. Ezov, N., Maltz, E., Yarom, R., Lewis, G.S., Schindler, D. Ron, M., Aizinbud, E. Lehrer, A.R., 1990. Cell density, fluid volume and electrolyte content of bovine vulvar tiusse during oestrus and dioestrus. Animal Reproduction Science, 22, 281-288
  8. Imwalle, D.B., Lehrer, A.R., Katz, L.S., 2007. Intravaginal impedance and sexual behavior of ovariectomized goats given estrogen alone or in combination with progesterone. Journal of Animal Science, 85,1908-1913
  9. Laurincik, J., Hyttel, P., Rath, D., Pivko, J., 1994. Ovulation, fertilization and pronucleus development in superovulated gilts. Theriogenology, 41, 447-452
  10. Lehrer, A.R., Lewis, G.S., Aizinbud, E., 1991. Electrical resistance of genital tissue during reproductive events in cow, and its possible on-farm applications: A review. Wiener Tierärztlicher Monatsschrift, 78, 317-322
  11. Lewis, G.S., Aizinbud, E., Lehrer, A.R., 1989. Changes in electrical resistance of vulvar tissue in Holstein cows during ovarian cycles and after treatment with prostaglandin F2 alfa. Animal Reproduction Science, 18, 183-197
  12. Love, R.G., Evans, G., Kluupiec, C., 1993. Seasonal effects on fertility in gilts and sows. Journal of Reproduction and Fertility, 48, 191-196.
  13. Möller-Holtkamp, P., Stickan, F., Parvizi, N., Elsaesser, F., 1995. Untersuchung über die Wirksamkeit des GnRH-Analogon Buserelin auf die LH-Sekretion beim Schwein, im Vergleich zu D-Phe6-LHRH. Reproduction in Domestic Animals, 30, 21-24
  14. Pfandler, L., 1972. Die elektrische Leitfähigkeit der Scheidenschleimhaut beim Schwein. Zuchthygiene, 7, 179-185
  15. Schindler, D., Lewis, G.S. Rosenberg, Miriam., Tadmor, A., Ezov, N., Ron, M., Aizinbud, E., Lehrer, A.R., 1990. Vulvar electrical impedance in periparturient cows and its relation to plasma progesterone, oestradiol-17ß and PGFM. Animal Reproduction Science, 23, 283-292
  16. Schnurrbusch, U., Bergfeld, J., Brüssow, K.P., Kaltofen, U., 1981. Schema zur Ovarbeurteilung beim Schwein. Monatsheft der Vetrinärmedizin, 36, 811-815
  17. Smith, J.W., Spahr, S.L., Puckett, H.B., 1989. Electrical conductivity of reproductive tissue for detection of estrus in dairy cows. Journal of Dairy Science, 72, 693-701
  18. Soede, N.M., Noordhuizen,-P.T.M., Kemp, B., 1992. The duration of ovulation in pigs, studied by transrectal ultrasonography, is not related early embryonic diversity. Theriogenology, 38, 653-666
  19. Van de Wiel, D.F.M., Erkens, J., Koops, W., Vos, Elene., Van Landeghem, A.A.J., 1981. Periestrous and midluteal time courses of circulating LH, FSH, prolactin, estradiol-17ß and progesterone in the domestic pig. Biology of Reproduction, 24, 223-233
  20. Walton, J.S., Veenhuizen, L.P., King, G.J., 1987. Relationships between time of day, estrus behavior, and the preovulatory luteinizing hormone surge in Holstein cows after treatment with cloprostenol. Journal of Dairy Science, 70, 1652-1663
  21. Zink, M.F., Diehl, J.R., 1984. Efficacy of using vaginal conductivity as an indicator of the optimum time to breed in swine. Journal of Animal Science, 59, 869-874.
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Indian Journal of Animal Research
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    volume 45 issue 2 (june 2011) : 88 - 94

    STUDY ON THE RELATIONSHIPS OF INTRAVAGINAL ELECTRICAL IMPEDANCE AND PLASMA LEVEL OF PROGESTERONE AND ESTRADIOL-17B IN ESTRUS SYNCHRONIZED SOWS IN PREDICTION OF THE OPTIMAL INSEMINATION TIME IN PIG

    T
    Tefera Yilma*
    A
    Axel Sobiraj1
    1Department of Clinical Studies, School of Veterinary Medicine, Addis Ababa University, Debre Zeit, Ethiopia

    • Submitted|

    • First Online |

    • doi

    Cite article:- Yilma* Tefera, Sobiraj1 Axel (2025). STUDY ON THE RELATIONSHIPS OF INTRAVAGINAL ELECTRICAL IMPEDANCE AND PLASMA LEVEL OF PROGESTERONE AND ESTRADIOL-17B IN ESTRUS SYNCHRONIZED SOWS IN PREDICTION OF THE OPTIMAL INSEMINATION TIME IN PIG. Indian Journal of Animal Research. 45(2): 88 - 94. doi: .

    ABSTRACT

    An experiment aimed at determining the association of impedance values with plasma level of progesterone and estradiol-17b in estrus synchronized sows for prediction of optimal insemination time was conducted in Large Animal Clinic for Theriogenology and Ambulatory Service of Faculty of Veterinary Medicine, Leipzig University, Germany. Measurements of intravaginal electrical impedance (IEI) were carried out through out the estrous cycle (synchronization phase and estrus period) using a 2-electrode impedance-measuring instrument (INOTEC FEG GmbH, Germany). Values of impedance measurements were analyzed based on clinical findings including ultrasongraphy, and endocrine parameters (plasma concentration of progesterone and estradiol-17b). Blood samples were collected parallel with measuring of IEI in order to determine plasma progesterone and estradiol-17b concentrations using radioimmunoassay (RIA). High values of impedance were measured during synchronization phases/diestrus period, and low IEI values coincided with the pre-ovulatory estradiol-17b peak, at the height of standing heat. IEI values began to decline, right after withdrawal of Regumate administration, about 2 to 3 days before the onset of standing heat. Average low values of impedance were registered within 36 to 52 hours at times of standing heat. Relationship among plasma levels of estradiol-17b and progesterone and values of IEI during estrus period was evident: Low IEI values were significantly correlated to maximum plasma levels of estradiol-17b (r = 0.-24) (P

    REFERENCES

    1. Brüssow, K.P., Ratky, J., Kanitz, W., Becker, F., 1990. The relationship between the surge of LH induced by exogenous Gn-RH and the duration of ovulation in gilts. Reproduction in Domestic Animals, 25, 255-259
    2. Baer, C., Bilkei, G., 2004. The effect of intra-vaginal applied GnRH-agonist on the time of ovulation and subsequent reproductive performance of weaned multiparous sows. Reproduction in Domestic Animals, 39(5), 293-7
    3. Belstra, B.A., Flowers, W.L., See, M.T., 2004. Factors affecting temporal relationships between estrus and ovulation in commercial sow farms. Animal Reproduction Science, 84(3-4):377-94
    4. Clark, J.R., Komkov, A., Wiginton, L.W., Tribble,. L.F., 1986. Time of onset of estrus in gilts. Theriogenology, 26, 639-643
    5. Cox, N.M., Britt, J.H., 1986. Pulsatile secretion of luteinizing hormone and follicle stimulating hormone and their relationship to secretion of estradiol and onset of estrus in weaned sows. Animal Reproduction Science, 12, 201-211
    6. Dusza, L., Opalka, M., Kaminska, B., Kaminski, T., Ciereszko, R.E., 1996. The relationship between electrical resistance of vaginal mucus and plasma hormonal parameters during periestrus in sows. Theriogenology, 45, 1491-1503
    7. Ezov, N., Maltz, E., Yarom, R., Lewis, G.S., Schindler, D. Ron, M., Aizinbud, E. Lehrer, A.R., 1990. Cell density, fluid volume and electrolyte content of bovine vulvar tiusse during oestrus and dioestrus. Animal Reproduction Science, 22, 281-288
    8. Imwalle, D.B., Lehrer, A.R., Katz, L.S., 2007. Intravaginal impedance and sexual behavior of ovariectomized goats given estrogen alone or in combination with progesterone. Journal of Animal Science, 85,1908-1913
    9. Laurincik, J., Hyttel, P., Rath, D., Pivko, J., 1994. Ovulation, fertilization and pronucleus development in superovulated gilts. Theriogenology, 41, 447-452
    10. Lehrer, A.R., Lewis, G.S., Aizinbud, E., 1991. Electrical resistance of genital tissue during reproductive events in cow, and its possible on-farm applications: A review. Wiener Tierärztlicher Monatsschrift, 78, 317-322
    11. Lewis, G.S., Aizinbud, E., Lehrer, A.R., 1989. Changes in electrical resistance of vulvar tissue in Holstein cows during ovarian cycles and after treatment with prostaglandin F2 alfa. Animal Reproduction Science, 18, 183-197
    12. Love, R.G., Evans, G., Kluupiec, C., 1993. Seasonal effects on fertility in gilts and sows. Journal of Reproduction and Fertility, 48, 191-196.
    13. Möller-Holtkamp, P., Stickan, F., Parvizi, N., Elsaesser, F., 1995. Untersuchung über die Wirksamkeit des GnRH-Analogon Buserelin auf die LH-Sekretion beim Schwein, im Vergleich zu D-Phe6-LHRH. Reproduction in Domestic Animals, 30, 21-24
    14. Pfandler, L., 1972. Die elektrische Leitfähigkeit der Scheidenschleimhaut beim Schwein. Zuchthygiene, 7, 179-185
    15. Schindler, D., Lewis, G.S. Rosenberg, Miriam., Tadmor, A., Ezov, N., Ron, M., Aizinbud, E., Lehrer, A.R., 1990. Vulvar electrical impedance in periparturient cows and its relation to plasma progesterone, oestradiol-17ß and PGFM. Animal Reproduction Science, 23, 283-292
    16. Schnurrbusch, U., Bergfeld, J., Brüssow, K.P., Kaltofen, U., 1981. Schema zur Ovarbeurteilung beim Schwein. Monatsheft der Vetrinärmedizin, 36, 811-815
    17. Smith, J.W., Spahr, S.L., Puckett, H.B., 1989. Electrical conductivity of reproductive tissue for detection of estrus in dairy cows. Journal of Dairy Science, 72, 693-701
    18. Soede, N.M., Noordhuizen,-P.T.M., Kemp, B., 1992. The duration of ovulation in pigs, studied by transrectal ultrasonography, is not related early embryonic diversity. Theriogenology, 38, 653-666
    19. Van de Wiel, D.F.M., Erkens, J., Koops, W., Vos, Elene., Van Landeghem, A.A.J., 1981. Periestrous and midluteal time courses of circulating LH, FSH, prolactin, estradiol-17ß and progesterone in the domestic pig. Biology of Reproduction, 24, 223-233
    20. Walton, J.S., Veenhuizen, L.P., King, G.J., 1987. Relationships between time of day, estrus behavior, and the preovulatory luteinizing hormone surge in Holstein cows after treatment with cloprostenol. Journal of Dairy Science, 70, 1652-1663
    21. Zink, M.F., Diehl, J.R., 1984. Efficacy of using vaginal conductivity as an indicator of the optimum time to breed in swine. Journal of Animal Science, 59, 869-874.
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