Characterization of the Preovulatory Period in Dairy Cows
Keywords:sexual behaviour, cervical flow, follicular dynamics, estrous hormones
AbstractThe periovulatory period of productive Holstein cows was studied, through their hormone levels, ovarian dynamic, characteristics of the cervical flow and their behavior; observed and registered throughout two consecutive periods. Results showed that during ovulation, the most evident changes were: animal behaviour (from being restless and unquiet to being quieter and allow to be mounted); the reduction of the size of their vulva together with a loss of the labia turgidity; a decrease in the quantity of flow and this one appeared as a transparent and noticeable secretion, one which kept the vulva humid and lubricated. The pH of the flow got higher (7-20- 7.50) and the degree of crystallization was reduced to 1.5-2, among the kinds of estrogenic flow, ovulation coincided with the presence of certain arrangements corresponding to type S3, P2 and P6. P flow is associated to the time of maximum fertility. The peak of the luteinizing hormone was detected on the ovulation day (1.90mUI/mL) and 24 hours afterwards the level was low; estrogens increased on the preovulatory days (0.80-0.97 pg/mL) causing the sexual behaviour, the stimulating follicle hormone accompanied the follicular growth and progesterone reached its highest increase consistent with the establishment of the corpus luteum (1.45ng/mL). The vulvar characteristics and the analysis of the cervical flow become complementary tools in order to determine the ideal moment for insemination.
Adams, G., Jaiswal, R., Singh, J., Malhi, P. Progress in understanding ovarian follicular dynamics in cattle. Theriogenology 69: 72-80, 2008.
Bernardi, S.F., Rinaudo, A., Marini, P. R. Cervical mucus characteristics and hormonal status at insemination of Holstein cows. IJVR, Vol. 17, No. 1, Ser. No. 54, Pages 45-49, 2016.
Blavy P, Derks M, Martin O, HÃ¶glund JK, Friggens NC. Overview of progesterone profiles in dairy cows. Theriogenology 86: 1061â€“71, 2016.
CortÃ©s, M. E., GonzÃ¡lez, F., Vigil, P. Crystallization of Bovine Cervical Mucus at Oestrus: An Update. Rev. Med. Vet. 28:103-116, 2014.
Edmonsond, A. J., Lean, I. J., Weaver, L. D., Farver, T., Webster, G. A body condition
scoring chart for Holstein dairy cows. J. Dairy Sci., 72 (1): 68â€“78, 1989.
Forde, N., Beltmana, M.E., Lonergana, P., Diskinc, M., Rochea, J.F., Crowea, M.A. Oestrous cycles in Bos taurus cattle. Animal Reproduction Science 124: 163â€“169, 2011.
Galina, C.S. and Orihuela, A. The detection of estrus in cattle raised under tropical conditions: What we know and what we need to know. Hormones and Behavior 52: 32â€“38, 2007.
Hartigan, P. J. Reproductive physiology in cattle. Pages 471â€“505. In Bovine Medicine: Diseases and Husbandry of Cattle. 2nd ed. A.H. Andrews, R. W. Blowey, H. Boyd, and R. G. Eddy, ed. Blackwell Science Ltd., Oxford, UK., 2004.
Houpt, K. A. Domestic Animal Behavior for Veterinarians and Animal Scientists. (4th ed.) Blackwell Publishing, Ames, IA, USA, 2005.
Katz, L. S. and McDonald, T. J. Sexual behavior of farm animals. Theriogenology 38:239-253, 1992.
Layek, S. S., Mohanty, T.K., Kumaresan, A., Behera, K., Chand, S. Cervical mucus characteristics and periestrual hormone concentration in relation to ovulation time in Zebu (Sahiwal) cattle. Livestock Science 152: 273â€“281, 2013.
LeBlanc, S. J. Is a high level of milk production compatible with good reproductive performance in dairy cows? Animal Frontiers 3 (4): 84-91. doi:10.2527/af.2013-0038, 2013.
Matamoros, R., Gomez, C., Andaur, M. Hormonas de utilidad diagnÃ³stica en Medicina Veterinaria. Revisiones bibliogrÃ¡ficas. Arch. Med. Vet. XXXIV (2): 167-182, 2002.
MenÃ¡rguez, M., Pastor, L. M., Odeblad, E. Morphological characterization of different human cervical mucus types using light and scanning electron microscopy. Human Reproduction 18 (9): 1782-1789, 2003.
Odeblad, E. Investigations on the physiological basis for fertility awareness. Bulletin for the Ovulation Method Research and Reference Centre of Australia 29 (1): 2-11, 2002.
Odeblad, E. Some notes on the cervical crypts. Bulletin of the ovulation method Research and reference centre of Australia 24 (2): p31, 1997.
Olds, D. and Seath, D. W. Repeatability of the estrous cycle length in dairy cattle. J. Dairy Sci. 34:626â€“632, 1951.
Price, E. O. Sexual behaviour of large domestic farm animals: an overview. J Anim Sci, 61 (3):62â€“74, 1985.
RamÃrez, I. and Lilido, N. CaracterÃsticas del comportamiento sexual natural e inducido de la vaca doble propÃ³sito. Mundo Pecuario, VIII, NÂº 2, 95-106, 2012.
Remnant, J.G., Green, M.J., Huxley, J.N., Hudson, C. D. Variation in the interservice intervals of dairy cows in the United Kingdom. J Dairy Sci 98:889â€“97, 2015.
Rivadeneira, V. Ciclo estral bovino. SIRIVS. Universidad Nacional Mayor de San Marcos. Facultad de Medicina Veterinaria. RevisiÃ³n bibliogrÃ¡fica (15 pÃ¡ginas). http://veterinaria.unmsm.edu.pe/files/Articulo_ciclo_estral_bovino_rivadeneira.pdf, 2013.
Roelofs, J., LÃ³pez, F., Hunter, R., Van Eerdenburg, F., Hanzen, Ch. When is a cow in estrus? Clinical and practical aspects. Theriogenology 74, 327-344, 2010.
Sartori, R., Haughian, J. M., Shaver, R. D., Rosa, G. J. M., Wiltbank, M. C. Comparison of ovarian function and circulating steroids in estrous cycles of Holstein heifers and lactating cows. J. Dairy Sci. 87:905â€“920, 2004.
Sveberg G, Refsdal AO, Erhard HW, Kommisrud E, Aldrin M, Tvete IF, Buckley F, Waldmann A, E. Ropstad E. 2011. Behavior of lactating Holstein-Friesian cows during spontaneous cycles of estrus. J Dairy Sci 94 (3): 1289.
Tsiligianni, T., Amiridis, G., Dovolou, E., Menegatos, I., Chadio, S., Rizos, D., Gutierrez-Adan, A. Association between physical properties of cervical mucus and ovulation rate in superovulated cows. Can J Vet Res 75: 248-253, 2011.
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