Robert ZOBEL, Suzana TKALCIC, Wendell COLE

Fertility issues in Simmental cows in Central Croatia: a 5-year study

The purpose of this study was to establish the fertility trends in dairy cows in Central Croatia and compare the trends and causes of infertility and subfertility during a 5-year period. A total of 12,060 Simmental cows and heifers were included in the study. The animals were examined by vaginoscopy, transrectal palpation, and ultrasonography on a regular basis. Fertility problems that included infertility and subfertility were diagnosed in 56.61% of all observed animals. The total number of animals diagnosed with subfertility increased and almost doubled by the end of the study period. Subfertility issues associated with anovulatory oestrus, delayed ovulation, and endometritis were 2 to 3 times more frequent at the end of the study period compared to the first year of the study. The number of animals with the repeat breeder syndrome diagnosis remained constant throughout the study. Anoestrus and cystic ovarian disease occurrence declined over time and were more than 50% reduced by the end of the study. Infertility was present in less than 1% of cows and did not change over time. In this study we recognised a rising trend of subfertility in Simmental cows in Central Croatia, primarily related to anovulatory oestrus, delayed ovulation, and endometritis.

Anahtar Kelimeler:

Key words: Cattle, infertility, subfertility, Croatia

Fertility issues in Simmental cows in Central Croatia: a 5-year study

Keywords:

Key words: Cattle, infertility, subfertility, Croatia,

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Darwash, A.O., Lamming, G.E., Woolliams, J.A.: Estimation of genetic variation in the interval from calving to postpartum ovulation of dairy cows. J. Dairy. Sci., 1997; 80: 1227–1234.
Parkinson, T.J.: Infertility. In: Noakes, D.E., Parkinson, T.J., England, G.C.W., Arthur, G.H., Eds. Arthur’s Veterinary Reproduction and Obstetrics. 8th edn., W.B. Saunders, London. 2001; 383–472.
Gardner, I.A., Hird, D.W., Utterback, W.W., Danaye-Elmi, C., Heron, B.R., Christiansen, K.H., Sischo, W.M.: Mortality, morbidity, case-fatality, and culling rates for California dairy cattle as evaluated by the National Animal Health Monitoring System, 1986–87. Prev. Vet. Med., 1990; 8: 157–170.
Xu, Z., Burton, L.J.: Reproductive performance of dairy cows in New Zealand. Proc. Australian New Zealand Combined Dairy Vet. Conf., 2000; 23–41.
Lillie, F.R.: The theory of the free-martin. Science, 1916; 43: 6
Biggers, J.D., McFeely, R.A.: Intersexuality in domestic animals. In: McLaren, A., Ed. Advances in Reproductive Physiology. Logos Press, London. 1966; 29–59.
Lagerlöf, N., Boyd, H.: Ovarian hypoplasia and other abnormal conditions in the sexual organs of cattle of the Swedish Highland breed: results of postmortem examinations of over 6,000 cows. Cornell Vet., 1953; 43: 64–79.
Yániz, J., Santolaria, P., López-Gatius, F.: Surface alterations in the bovine pelvic peritoneum following rectal examination of reproductive organs: a scanning electron microscopy Study. Anat. Histol. Embryol., 2002; 3: 372–374.
Peter, A.T., Levine, H., Drost, M., Bergfelt, D.R.: Compilation of classical and contemporary terminology used to describe morphological aspects of ovarian dynamics in cattle. Theriogenology, 2009; 71: 1343–1357.
Zemjanis, R.M.: “Repeat-breeding” or conception failure in cattle. In: Morrow, D.A., Ed. Current Therapy in Theriogenology. WB Saunders, Philadelphia, PA, USA. 1980; 205–213.
Peter, A.T.: Infertility due to abnormalities of the ovaries. In: Youngquist, R.S., Ed. Current Therapy in Large Animal Theriogenology. WB Saunders, Philadelphia, PA, USA. 1997; 349–354.
Watson, E.D., Harwood, D.J.: Clinical and endocrinological investigation of possible ovulatory failure in a dairy cow. Vet. Rec., 1984; 114: 424–425.
Peter, A.T.: An update on cystic ovarian degeneration in cattle. Reprod. Domest. Anim., 2004; 39: 1–7.
Hanzen, C.H., Bascon, F., Theron, L., López-Gatius, F.: Les kystes ovariens dans l’espèce bovine. 1. Définitions, symptômes et diagnostic. Ann. Med. Vet., 2007; 151: 247–256 (in French with English summary).
Youngquist, R.S.: Cystic ovaries. Proc. Natl. Reprod. Symp., 1994; 1
López-Gatius, F.: Is fertility declining in dairy cattle? A retrospective study in northeastern Spain. Theriogenology, 2003; 60: 89–99.
López-Gatius, F., López-Behar, M., Fenech, M., Hunter, R.H.F.: Ovulation failure and double ovulation in dairy cattle: risk factors and effects. Theriogenology, 2005; 63: 1298–1307.
López-Gatius, F., Mirzaei, A., Santolaria, P., Bech-Sàbat, G., Nogareda, I., Garcia-Ispierto, I., Hanzen, C., Yaniz, J.L.: Factors affecting the response to the specific treatment of several forms of clinical anestrus in high producing dairy cows. Theriogenology, 2008; 69: 1095–1103.
Trimberger, G.W.: Breeding efficiency in dairy cattle from artificial insemination at various intervals before and after ovulation. Univ. Nebraska Ag. Exp. Sta. Res. Bull., 1948; 153: 3–5.
Walker, W.L., Nebel, R.L., McGilliard, M.L.: Time of ovulation relative to mounting activity in dairy cattle. J. Dairy Sci., 1996; 79: 1555–1561.
Roelofs, J.B., Soede, N.M., Kemp, B.: Insemination strategy based on ovulation prediction in dairy cattle. Vlaams Diergeneeskundig Tijdschrift, 2006; 75: 2–5.
Van Rensburg, S.W.J., De Vos, W.H.: Ovulatory failure in bovines. Onderstepoort J. Vet. Res., 1962; 29: 55–78.
Zobel, R., Gereš, D., Turk, R., Gračner, D., Žubčić, D.: Onset of ovulation analysis in dairy cows. Proc. XVI Cong. Mediterranean Fed. Health Prod. Ruminants, Zadar, Croatia. 2008; 267–274.
Allen, J.F.: Separate sexes and the mitochondrial theory of aging. J. Theor. Biol., 1996; 180: 135–140.
Kinsel, M.L.: Dairy cow postpartum disease: definition, decision and dilemma. Proc. 29th Annual Convention Proc. Am. Assoc. Bovine Practitioners, San Diego, CA, USA. 1996; 3–7.
Studer, E., Morrow, D.A.: Postpartum evaluation of bovine reproductive potential: comparison of findings from genital tract examination per rectum uterine culture and endometrial biopsy. J. Am. Vet. Med. Assoc., 1978; 172: 489–494.
LeBlanc, S.J., Duffield, T.F., Leslie, K.E., Bateman, K.G., Keefe, G.P., Walton, J.S.: Defining and diagnosing postpartum clinical endometritis and its impact on reproductive performance in dairy cows. J. Dairy Sci., 2002; 85: 2223–2236.
Bretzlaff, K.N.: Rationale for treatment of endometritis in the dairy cow. Vet. Clin. N. Am. (Food Anim. Pract.), 1987; 3: 593–607.
Bonnett, B.N., Martin, S.W., Gannon, V.P., Miller, R.B., Etherington, W.G.: Endometrial biopsy in Holstein–Friesian dairy cows. III. Bacteriological analysis and correlations with histological findings. Can. J. Vet. Res., 1991; 55: 168–173.
Chagas, L.M., Bass, J.J., Blache, D., Burke, C.R., Kay, J.K., Lindsay, D.R., Lucy, M.C., Martin, G.B., Meier, S., Rhodes, F.M., Roche, J.R., Thatcher, W.W., Webb, R.: Invited Review: New perspectives on the roles of nutrition and metabolic priorities in the subfertility of high-producing dairy cows. J. Dairy Sci., 2007; 90: 4022–4032.
Perišić, P., Skalicki, Z., Petrović, M.M., Bogdanović, V., RužićMuslić, D.: Simmental cattle breed in different production systems. Biotechnol. Anim. Husb., 2009; 25: 315–326.
Zobel, R., Buić, V., Pipal, I.: Causes of infertility and subfertility in dairy cows over five years in the Sisacko-Moslavacka County. Proc. Vet. znanost i struka, Zagreb, 2009; 163–164.
Gautam, G., Nakao, T., Yusuf, M., Koike, K.: Prevalence of endometritis during the postpartum period and its impact on subsequent reproductive performance in two Japanese dairy herds. Anim. Reprod. Sci., 2009; 116: 175–187.
Markusfeld, O.: Periparturient traits in seven high dairy herds. Incidence rates, association with parity, and interrelationship among traits. J. Dairy Sci., 1987; 70: 158–168.
Kim, I.H., Kang, H.G.: Risk factors for postpartum endometritis and the effect of endometritis on reproductive performance in dairy cows in Korea. J. Reprod. Dev., 2003; 49: 485–491.
Opsomer, G., Gröhn, Y.T., Hertl, J., Coryn, M., Deluyker, H., de Kruif, A.: Risk factors for postpartum ovarian dysfunction in high producing dairy cows in Belgium: a field study. Theriogenology, 2000; 53: 841–857.
Bruun, J., Ersbİll, A.K., Alban, L.: Risk factors for metritis in Danish dairy cows. Prev. Vet. Med., 2002; 54: 179–190.
Gračner, D., Bedrica, L., Samardžija, M., Harapin, I., Žubčić, D., Gereš, D., Potočnjak, D., Zobel, R., Gregurić-Gračner, G., Cvitković, D., Dobranić, T.: Zervix duplex bei einer Simmentaler Fleckviekhuh. Tierarztl. Umsch., 2009; 64: 288– 289 (in German).
Gustafsson, H., Emanuelson, U.: Characterisation of the repeat breeding syndrome in Swedish dairy cattle. Acta Vet. Scand., 2002; 43: 115–125.
Bartlett, P.C., Kirk, J.H., Mather, E.C.: Repeated insemination in Michigan Holstein-Friesian cattle: Incidence, descriptive epidemiology and estimated economic impact. Theriogenology, 1986; 26: 309–322.
Peter, A.T., Vos, P.L.A.M., Ambrose, D.J.: Postpartum anestrus in dairy cattle. Theriogenology, 2009, 71: 1333–1342.