Metrika

  • citati u SCIndeksu: 0
  • citati u CrossRef-u:0
  • citati u Google Scholaru:[]
  • posete u poslednjih 30 dana:4
  • preuzimanja u poslednjih 30 dana:2

Sadržaj

članak: 6 od 34  
Back povratak na rezultate
2017, vol. 33, br. 2, str. 181-191
Distribucija dominantnih folikula kod mlečnih krava postpartum
Univerzitet u Sarajevu, Veterinarski fakultet, Federacija BiH

e-adresabenjamin.cengic@vfs.unsa.ba
Ključne reči: goveda; jajnici; dominantni folikuli; puerperium
Sažetak
Klinički i subklinički poremećaji i obolenja, dovode do reproduktivnih neuspeha i pada mlečnosti. Etiologija poremećaja je najčešće u patološkom delovanju mikroorganizama, propusta u ishrani i smeštaju, te u menadžmentu. Nakon telenja, telo je pod stresom i mlečnost je najviša, a što pogoduje pojavi metaboličkih i infektivnih obolenja. Status puerperija, broj laktacija, telesna kondicija i godišnje doba telenja, imaju najveći uticaj na ciklične procese na jajnicima. Pravilan razvoj dominantnih folikula, ovulacija, formiranje žutog tela i luteoliza su neophodni za uspostavljanje pravilne ovarijalne cikličnosti, koja vodi boljoj plodnosti. Eksperiment je uključio 50 crnih Holštajn krava tokom prvih 52 dana laktacije. Krave su podeljene na dve glavne grupe, one s normalnim puerperijem - NP (n=32) i abnormalnim puerperijem - AP (n=18). Pregledi su se radili tokom perioda 6 do 52 dana postpartum. Dominantni folikuli na jajniku su uočavani dijagnostičkim ultrazvukom. Najveći broj dominantnih folikula je uočen tokom prva dva pregleda, zatim njihov broj opada i tokom zadnja dva pregleda je ponovo u rastu. Pad broja dominantnih folikula u obe grupe je najizražajniji u periodu 14-30 dana. Prilikom prvog pregleda, levi jajnici imaju više dominantnih folikula, dok pri kasnijim pregledima, to se menja u korist desnih jajnika. Rast broja vitalnih dominantnih folikula u periodu 38-45 dana postpartum i odsustvo abnormalnog sadržaja u lumenu uterusa u istom periodu, najavljuje dolazak fertilnog estrusa.
Reference
Bisinotto, R.S., Chebel, R.C., Santos, J.E.P. (2010) Follicular wave of the ovulatory follicle and not cyclic status influences fertility of dairy cows. Journal of dairy science, 93(8): 3578-87
El-Din. Zain, A., Nakao, T., Abdel, R.M., Moriyoshi, M., Kawata, K., Moritsu, Y. (1995) Factors in the resumption of ovarian activity and uterine involution in postpartum dairy cows. Animal Reproduction Science, 38(3): 203-214
Földi, J., Kulcsár, M., Pécsi, A., Huyghe, B., de Sa, C., Lohuis, J.A.C.M., Cox, P., Huszenicza, Gy. (2006) Bacterial complications of postpartum uterine involution in cattle. Animal Reproduction Science, 96(3-4): 265-281
Gilbert, R.O., Shin, S.T., Guard, C.L., Erb, H.N., Frajblat, M. (2005) Prevalence of endometritis and its effects on reproductive performance of dairy cows. Theriogenology, 64(9): 1879-88
Kasimanickam, R., Duffield, T., Foster, R., Gartley, C., Leslie, K., Walton, J., Johnson, W. (2004) Endometrial cytology and ultrasonography for the detection of subclinical endometritis in postpartum dairy cows. Theriogenology, 62(1-2): 9-23
Kawashima, C., Fukihara, S., Maeda, M., Kaneko, E., Montoya, C.A., Matsui, M., Shimizu, T., Matsunaga, N., Kida, K., Miyake, Y., Schams, D., Miyamoto, A. (2007) Relationship between metabolic hormones and ovulation of dominant follicle during the first follicular wave post-partum in high-producing dairy cows. Reproduction (Cambridge, England), 133(1): 155-63
LeBlanc, S.J., Duffield, T.F., Leslie, K.E., Bateman, K.G., Keefe, G.P., Walton, J.S., Johnson, W.H. (2002) Defining and Diagnosing Postpartum Clinical Endometritis and its Impact on Reproductive Performance in Dairy Cows. Journal of Dairy Science, 85(9): 2223-2236
Leslie, K.E. (1983) The events of normal and abnormal postpartum reproductive endocrinology and uterine involution in dairy cows: a review. Canadian veterinary journal = La revue veterinaire canadienne, 24(3): 67-71
Montiel, F., Ahuja, C. (2005) Body condition and suckling as factors influencing the duration of postpartum anestrus in cattle: a review. Animal Reproduction Science, 85(1-2): 1-26
Mutevelić, A., Ferizbegović, J., Mutevelić, T. (2003) Reprodukcija domaćih životinja. Sarajevo
Peter, A.T., Bosu, W.T.K. (1988) Relationship of uterine infections and folliculogenesis in dairy cows during early puerperium. Theriogenology, 30(6): 1045-1051
Peter, A.T., Vos, P.L.A.M., Ambrose, D.J. (2009) Postpartum anestrus in dairy cattle. Theriogenology, 71(9): 1333-1342
Savio, J. D., Keenan, L., Boland, M. P., Roche, J. F. (1988) Pattern of growth of dominant follicles during the oestrous cycle of heifers. Reproduction, 83(2): 663-671
Senger, P.L. (2005) Pathways to pregnancy and parturition. USA, 328-335, Second revised edition
Sheldon, I., Dobson, H. (2004) Postpartum uterine health in cattle. Animal Reproduction Science, 82-83: 295-306
Sheldon, I.M., Noakes, D.E., Rycroft, A.N., Pfeiffer, D.U., Dobson, H. (2002) Influence of uterine bacterial contamination after parturition on ovarian dominant follicle selection and follicle growth and function in cattle. Reproduction (Cambridge, England), 123(6): 837-45
Sheldon, I.M., Noakes, D.E., Dobson, H. (2000) The influence of ovarian activity and uterine involution determined by ultrasonography on subsequent reproductive performance of dairy cows. Theriogenology, 54(3): 409-19
Shrestha, H.K., Nakao, T., Higaki, T., Suzuki, T., Akita, M. (2004) Resumption of postpartum ovarian cyclicity in high-producing Holstein cows. Theriogenology, 61(4): 637-49
Williams, E.J., Fischer, D.P., Noakes, D.E., England, G.C.W., Rycroft, A., Dobson, H., Sheldon, I.M. (2007) The relationship between uterine pathogen growth density and ovarian function in the postpartum dairy cow. Theriogenology, 68(4): 549-59
 

O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.2298/BAH1702181C
objavljen u SCIndeksu: 07.12.2017.
Creative Commons License 4.0