• Hanzen C, Boudry B
  • PV 240
  • Novembre 2003
  • : Bovins

Pour en savoir plus
1. AMIRIDIS GS, BELIBASAKI S, LEONTIDES L, LYMBEROPOULOS A, VAINAS E. Reproductive efficiency of three estrus synchronization schemes comprising fixed-time insemination in dairy cows. J Vet Med A Physiol Pathol Clin Med. 2000, 47(5):271-276.
2. BALLINGER H.J. The effect of insemination carried out early or late in oestrus on the sex ratio of calves born. Vet. Rec., 1970, 86,631.
3. BARRETT G.R, CASIDA L.E. Time of insemination and conception rate in artificial breeding. J. Dairy Sci., 1946, 29, 556.
4. BARROS C.M., MOREIRA MBP, FIGUEIREDO R.A., TEIXEIRA A.B., TRINCA L.A. Synchronisation of ovulation in beef cows(Bos indicus) using GnRH, PGF2a and estradiol benzoate. Theriogenology, 2000, 53, 1121-1134.
5. BARTOLOME J.A., ARCHIBALD L.F., MORRESEY P., HERNANDEZ J., TRAN T., KELBERT D., LONG K., RISCO C.A., THATCHER W.W. Comparison of synchronisation of ovulation and induction of estrus as therapeutic strategies for bovine ovarien cysts in dairy cows. Theriogenology, 2000 , 53, 815-825.
6. BEAM S.W., BUTLER W.R. Energy balance and ovarian follicle development prior to the first ovulation postpartum in dairy cows receiving three levels of dietary fat. Biol. Reprod., 1997, 56, 133-142.
7. BILBY C.R., MACMILLAN K.L., VERKERK G.A. ET COLL. A comparative study of ovarian function in American (US) Holetsin and New Zealand (NZ) Friesian lactating dairy cows. J.Dairy Sci. 1998, 81 (Suppl1), 222(abs).
8. BO G.A., ADAMS G.P., GACCIA M., MARTINEZ M., PIERSON R.A., MAPLETOFT R.J. Ovarian follicular wave emergence after treatment with progestogen and estradiol in cattle. Anim. Reprod. Sci., 1995, 39, 193-204.
9. BO G.A., ADAMS G.P., PIERSON R.A., TRIBULO H.E., GACCIA M., MAPLETOFT R.J. Follicular wave dynamics after estradiol-17b treatment of heifers with or without a progestogen implant. Theriogenology, 1994, 41, 1555-1569.
10. BREUEL K.F., SPITZER J.C., HENRICKS D.M. Systemic progesterone concentration following human chorionic gonadotropin administration at various times during estrous cycle in beef heifers. J. Anim. Sci., 1989, 67, 1564-1572.
11. BRITT J.S., GASKA J. Comparison of two estrue synchronization programs in a large, cinfinement-housed dairy herd. J.A.V.M.A., 1998, 212, 210-212.
12. BROADWAY J.L., BEVERLY J.R., SORENSON A.M., FLEEGER J.L. Optimum timing for insemination of cattle. J. Anim. Sci., 1975, 41(suppl), 352(abstr).
13. BURKE J.M., DE LA SOTA R.L., RISCO C.A., STAPLES C.R., SCHMITT J.-P., THATCHER W.W. Evaluation of timed insemination using a gonadotropin-releasing hormone agonist in lactating dairy cows. J. Dairy Sci., 1996, 79, 1385-1393.
14. CARTMILL J.A., EL-ZARKOUNY S.Z., HENSLEY B.A., LAMB G.C., STEVENSON J.S. Stage of cycle, incidence and timing of ovulation and pregnancy rates in dairy cattle after three timed breeding protocols. J. Dairy Sci., 2001b, 84, 1051-1059.
15. CARTMILL J.A., EL-ZARKOUNY S.Z., HENSLEY B.A., ROZELL T.G., SMITH J.F., STEVENSON J.S. An alternative AI breeding protocol for dairy cows exposed to elevated ambient temperatures before or after calving or both. J. Dairy Sci., 2001a, 84, 799-806.
16. CHENAULT J.R. Effect of fertirelin acetate or buserelin on conception rate at first or second insemination in lactating dairy cows. J.Dairy Sci., 1990, 73, 633-638.
17. CHENAULT J.R., THATCHER W.W., KALRA P.S., ABRAMS R.M., WILCOX C.J. Transitory changes in plasma progestins, estradiol and luteinising hormone approaching ovulation in the bovine. J. Dairy Sci., 1975, 58, 709-
18. CHENAULT J.R., THATCHER W.W., KALRA P.S., ABRAMS R.M., WILCOX C.J. Plasma progestins, estradiol and luteinising hormone following prostaglandin F2a injection. J. Dairy Sci., 1976, 59, 1342-
19. CORDOBA MC, FRICKE PM. Initiation of the breeding season in a grazing-based dairy by synchronization of ovulation. J Dairy Sci. 2002, 85(7):1752-63.
20. DE LA SOTA R.L., BURKE J.M., RISCO C.A., MOREIRA F., DELORENZO M.A., THATCHER W.W. Evaluation of timed insemination during summer heat stress in lactating dairy cattle. Theriogenology, 1998, 49, 761-770.
21. DE RENSIS F., ALLEGRI M., SEIDEL G.E. Estrus synchronisation and fertility in post-partum dairy cattle after administration of human chorionic gonadotrophin (HCG) and prostaglandin F2alpha analog. Theriogenology, 1999, 52, 259-269.
22. DEJARNETTE J.M., SALVERSON R.R., MARSHALL C.E. Incidence of premature estrus in lactating dairy cows and conception rates to standing estrus or fixed-time inseminations after synchron,isation using GnRH and PGF2a. Anim.Reprod. Sci. 2001, 67, 27-35.
23. DEJARNETTE JM, DAY ML, HOUSE RB, WALLACE RA, MARSHALL CE. Effect of GnRH pretreatment on reproductive performance of postpartum suckled beef cows following synchronization of estrus using GnRH and PGF2alpha. J Anim Sci. 2001 Jul;79(7):1675-82.
24. DIAZ T, SCHMITT E.J.-P., DE LA SOTA R.L., THATCHER M-J, THATCHER W.W., Human chorionic gonadotropin-induced alterations in ovarian follicular dynamics during the estrous cycle of heifers. J. Anim. Sci., 1998, 76, 1929-1936.
25. ERB, RE, H.A. GARVERICK, R.D. RANDEL, B.L. BROWN, C.J. CALLAHAN. Profiles of reproductive hormones associated with fertile and non fertile inseminations of dairy cows. Theriogenology 1976, 5: 227-242.
26. FARIN, C.E., C.L. MOELLER, H. MAYAN, F. GAMBONI, H.R. SAWYER, G.D. Niswender. Effects of luteinizing hormone and human chorionic gonadotropin on cell populations in the ovine corpus luteum. Biol.Reprod., 1988, 38: 413-421.
27. FERNANDES P., TEIXEIRA A.B., CROCCI A.J., BARROS C.M. Timed artificial inselination in beef cattle using GnRH agonist, PGF2alpha and estradiol benzoate (EB). Theriogenology, 2001, 55, 1521-1532.
28. FOLMAN T., ROSENBERG M ., HERZ Z., DAVIDSON M . The relationship between plasma progesterone concentration and conception in postpartum dairy cows maintened on two levels of nutrition. J. Reprod. Fert., 1973, 34, 267-278.
29. FOLMAN Y., KAIM M., HERZ Z., ROSENBERG M. Reproductive management of dairy cattle based upon synchronisationof estrous cycles. J. Dairy Sci., 1984, 67, 153-160.
30. FONSECA F.A., BRITT J.H., MCDANIEL B.T., WILK J.C., RAKES A.H. Reproductive traits of Holsteins and Jerseys. Effect of age, milk yield and clinical abnormalities on involution of cervix and uterus, ovulation, estrous cycles, detection of estrus, conception rate and days open. J. Dairy Sci., 1983, 66, 1128-1147.
31. FOOTE R.H. Sex ratios in dairy cattle under various conditions. Theriogenology, 1977, 8, 349-356.
32. FRICKE P.M., GUENTHER J.N., WILTBANK M.C. Efficacy of decreasing the dose of GnRH used in a protocol for synchronisation of ovulation and timed AI in lactating dairy cows Theriogenology, 1998, 50, 1275-1284.
33. FRICKE P.M., REYNOLDS L.P., REDMER D.A. Effect of human chorionic gonadotropin adminsitered early in the estrous cycle on ovulation and subsequent luteal function in cows. J. Anim. Sci., 1993, 71, 1242-1246.
34. FRICKE P.M., WILTBANK M.C. Effect of milk production on the incidence of double ovulation in dairy cows. Theriogenology, 1999, 52, 1133-1143.
35. GEARY T.W., WHITTIER J.C. Effects of a time insemination following synchronisation of ovulation using the Ovsynch or CO-synch protocol in beef cows. Prof.Anim.Sci. 1998, 14, 217-220.
36. GEARY TW, DWNING E.R., BRUEMMER J.E., WHITTIER J.C. Ovarian and estrous response of suckeld beef cows to the Select Synch estrous synchronisation protocol. Prof.Anim.Sci., 2000, 16, 1-5.
37. Geary TW, Salverson RR, Whittier JC. Synchronization of ovulation using GnRH or hCG with the CO-Synch protocol in suckled beef cows.J Anim Sci. 2001 Oct;79(10):2536-41
38. GREVE T.H., CALLESEN H., HYTTEL P., HOIER R., ASSEY R. The effect of exogenous gonadotropins on oocyte and embryo quality in cattle. Theriogenology, 1995, 43, 41-48.
39. HANLON D.W., WILLIAMSOM N.B., WICHTEL J.J., STEFFERT I.J., CRAIGIE A.L., PFEIFFER D.U. The effect of estradiol benzoate administration on estrous response and synchronized pregancy rates in dairy heifers after treatment with exogenous progesterone. Theriogenology, 1996, 45, 775-785.
40. - HANZEN CH, HOUTAIN JY, LAURENT Y. Mise au point relative à l'utilisation de la gonadolibérine en reproduction bovine. 1. Justifications physiologiques de son application au traitement de l'infertilité. Le Médecin Vétérinaire du Québec, 1996a, 26, 7-10.
41. HANZEN CH. , BOUDRY B., BOUCHARD E. Gestion hormonale de la reproduction bovine. Effets du protocole Ovsynch sur les performances de reproduction, la cyclicité et la mortalité embryonnaire. Le Point Vétérinaire, 2003c
42. HANZEN CH. , BOUDRY B., DRION P.V Gestion hormonale de la reproduction bovine. 2. Effets sur l'activité lutéale et folliculaire de la gnRH et de la PGF2alpha utilisées dans le protocole Ovsynch chez la vache. Le point Vétérinaire 2003b
43. HANZEN CH. , BOUDRY B., DRION P.V. Gestion hormonale de la reproduction bovine. 1. Principes de Base relatifs à l'induction et/ou la synchronisation de l'Oestrus chez la vache au moyen de la prostaglandine F2alpha. Le Point Vétérinaire, 2003a. J Dairy Sci. 2002, 85(4):1002-1008.
44. HELMER S.D., BRITT J.H. Fertility of dairy cattle treated with human chorionic gonadotropin (hCG) to stimulate progesterone secretion. Theriogenology, 1986, 26, 683-695.
45. HENDRICKS C., MCCLINTOCK M.K. Timing of inseminationis correlated with the secondary sex ratio of Norway rats. Physiol. Behav., 1990, 48, 625-632.
46. JEMMESON A. Synchronising ovulation in dairy cows with either two treatments of gonadotropin-releasing hormone and one of prostaglandin, or two treatments of prostaglandin. Aust. Vet.J., 2000, 78,108-111.
47. JOBST S.M., NEBEL R.L., McGILLIARD M.L., PELZERT K.D. Evaluation of reproductive performance in lactating dairy cows with prostaglandine F2a, gonado tropin- releasing hormone, and timed artificial insemination. J. Dairy Sci. , 2000, 83, 2366-2372.
48. JORDAN ER, SCHOUTEN MJ, QUAST JW, BELSCHNER AP, TOMASZEWSKI MA. Comparison of two timed artificial insemination (TAI) protocols for management of first insemination postpartum.
49. KEISTER Z.O., DENISE S.K., ARMSTRONG D.V., AX R.L., BROWN M.D. Pregnancy outcomes in two commercial dairy herds following hormonal scheduling programs. Theriogenology 1999, 51, 1587-1596.
50. LAMMOGLIA M.A., SHORT R.E., BELLOWS R.E., BELLOOWS R.A., MACNEIL M.D. HAFS H.D. Induced and synchronized estrus in cattle: dose titration of estradiol benzoate in peripubertal heifers and postpartum cows after treatment with an intravaginal progesterone-releasing insert and prostaglandin F2a. J. Anim. Sci., 1998, 76, 1662-1670.
51. LEVY N., KOBAYASHI S., ROTH Z., WOLFENSON D., MIYAMATO A., MEIDAN R. Administration of prostaglandin F2alpha during the early bovine luteal phase does not alter the expression of ET-1 and of its type A receptor : a possible cause for coprus luteum refractoriness. Biol.Reprod.,2000,63,377-382.
52. LOPEZ_GATIUS F., Effects of cloprostenol, human chorionic gonadotropin and estradiol benzoate treatment on estrus synchronisation in dairy cows. Theriogenology, 1989, 32, 185-195.
53. LOPEZ_GATIUS F., LOPEZ-BEJAR M. Reproductive performance of dairy cows with ovarian cysts after different GnRH and cloprostenol protocols. Theriogenology, 2002, 58, 1337-1348.
54. LOPEZ-GATIUS F, SANTOLARIA P, YANIZ J, RUTLLANT J, LOPEZ-BEJAR M. Persistent ovarian follicles in dairy cows: a therapeutic approach. Theriogenology. 2001 Sep 1;56(4):649-59.
55. LOPEZ-GATIUS F. Reproductive performance of lactating dairy cows treated with cloprostenol, hcg and estradiol benzoate for synchronization of estrus followed by timed AI. Theriogenology. 2000 Sep 1;54(4):551-8.
56. LUCY C., STEVENSON J.S. Gonadotropin releasing hormone at estrus: Lutenizing hormone, estradiol and progesterone during the periestrual and postinsemination periods in dairy cattle. Biol. Reprod., 1986, 35, 300-311.
57. LUCY M.C., STEVENSON J.S., CALL E.P. Controlling first service and calving interval by prostaglandin F2 alpha, gonadotropin releasing hormone and timed insemination. J.Dairy Sci. 1986, 69, 2186-2194.
58. MIALOT J.P., LAUMONNIER G., PONSART C., FAUXPOINT H., BARASSIN E., PONTER A.A., DELETANG F. Postpartum subestrus in dairy cows : comparison of treatment with prostaglandin F2alpha or GnRH + prostaglandin F2alpha + GnRH. Theriogenology, 1999, 52, 901-911.
59. MOMCILOVIC D., ARCHBALD L.F., WALTERS A ., TRAN T., KELBERT D., RISCO C., THATCHER W.W. Reproductive performance of lactating dairy cows treated with gonadotropin-releasing hormone (GnRH) and/or prostaglandin F2a (PGF2a) for synchronisation of estrus and ovulation. Theriogenology, 1998 , 50, 1131-1139.
60. MOREIRA F, ORLANDI C, RISCO CA, MATTOS R, LOPES F, THATCHER WW. Effects of presynchronization and bovine somatotropin on pregnancy rates to a timed artificial insemination protocol in lactating dairy cows. J Dairy Sci. 200, 84(7):1646-59.
61. MOREIRA F., DE LA SOTA R.L., DIAZ T., THATCHER W.W. Effect of day of the estrous cycle at the initiation of a timed artificial insemination protocol on reproductive responses of dairy heifers. J. Anim. Sci., 2000b, 78, 1568-1576.
62. MOREIRA F., ORLANDI C., RISCO C.A., MATTOS R., LOPES F., THATCHER W.W. Effects of presynchronization and bovine somatotropin on pregnancy rate to to a timed artificial insemination protocol in lactating dairy cows. J. Dairy Sci., 2001, 84, 1646-1659.
63. MOREIRA F., RISCO C.A., PIRES M.F.A., AMBROSE J.D., DROST M., THATCHER W.W. Use of bovine somatotropin in lactating dairy cows receiving timed artificial insemination. J. Dairy Sci. , 2000c, 83, 1245-1255.
64. MOREIRA F., RISCO C.A., PIRES M.F.A., AMBROSE J.D., DROST M., DELORENZO M., THATCHER W.W. Effect of body condition on reproductive efficiency of lactating dairy cows receiving a timed insemination. Theriogenology, 2000a, 53, 1305-1319.
65. NANDA A.S., WARD W.R., WILLIAMS P.C.W., DOBSON H. Retrospective analysis of the efficacy of different hormone treatments of cystic ovarian disease in cattle. Vet.Rec., 1988, 122, 155-158.
66. PANCARI S.M., JORDAN E.R., RISCO C.A., SCHOUTEN M.J., LOPES F.L., MOREIRA F. THATCHER W.W. Use of estradiol cypionate in a pre-synchronized timed artificial insemination program for lactating dairy cattle. J. Dairy Sci., 2002, 85, 122-131.
67. PEARL R., PARSHLEY H.M. Data on sex determination in cattle. Biol. Bull., 1913, 24, 205-225.
68. PETERS MW, PURSLEY JR. Fertility of lactating dairy cows treated with Ovsynch after presynchronization injections of PGF2 alpha and GnRH. J Dairy Sci. 2002 Sep;85(9):2403-6.
69. PRATT N.C., HUCK U.W., LISK R.D. Offspring sex ratio in hamsters is correlated with vaginal pH at certains times of mating. Behav. Neural. Biol., 1987, 48, 310-316.
70. PRICE C.A., WEBB R. Ovarian response to hCG treatement during the oestrous cycle in heifers. J. Reprod. Fert., 1989, 86, 303-308.
71. PURSLEY J.R., KOSOROCK M.R., WILTBANK M.C. Reproductive management of lactating dairy cows using synchronization of ovulation. J. Dairy Sci., 1997b, 80, 301-306.
72. PURSLEY J.R., MEE M.O., WILTBANK M.C. Synchronisation of ovulation in dairy cows using PGF2a and GnRH. Theriogenology, 1995, 44, 915-923.
73. PURSLEY J.R., SILCOX R.W., WILTBANK M.C. Conception rates at differing intervals between A.I. and ovulation. J. Dairy Sci. 1995, 78, 279(abst).
74. PURSLEY J.R., SILCOX R.W., WILTBANK M.C. Effect of time of artificial insemination on pregnancyrates, calving rates, pregnancy loss and gender ratio after synchronozation of ovulation in lactating dairy cows. J. Dairy Sci., 1998, 81, 2139-2144.
75. PURSLEY J.R., WILTBANK M.C., STEVENSON J.S., OTTOBRE J.S., GARVERICK H.A., ANDERSON L.L. Pregnancy rates per artificial insemination in cows and heifers inseminated at a synchronized ovulation or synchronized estrus. J . Dairy Sci., 1997a, 80, 295-300.
76. RAHE C.H., OWENS R.E., FLEEGER J.L., NEWTON H.J., HARMS P.G. Pattern of plasma luteinising hormone in the cyclic cow: dependance upon the period of the cycle. Endocrinology, 1980, 107, 498-503.
77. RAJAMAHENDRAN R., SIANANGAMA P.C. Effect of human chorionic gonadotropinon dominant follicles in cows. Formation of accessory corpora lutea, progesterone production and pregnancy rates. J. Reprod. Fert., 1992, 95, 577- 584.
78. ROSENBERG M., KAIM M., HERZ Z., FOLMAN Y. Comparison of methods for the synchronisation of estrous cycles in dairy cows. 1. Effects on plasma progesteron and manifestation of estrus. J. Dairy Sci., 1990, 73, 2807-2816.
79. SANTOS J.E.P., THATCHER W.W., POOL L., OVERTON M.W. Effect of human chorionic gonadotropin on luteal function and reproductive performance of high producing lactating Holstein dairy cows. J.Anim.Sci., 2001, 79,2881-2894.
80. SARTORI R., FRICKE P.M., FERREIRA J.C.P. et coll. Follicular deviation and acquisition of ovulatory capacity in bovine follicles. Biol.Reprod. 2001, 65, 1403-1409.
81. SASONGKO B.W.P., WHITTIER J.C., GEARY T.W. et coll. Reduced dose GnRH in Select Synch and Co-Synch protocols to synchronize estrus and ovulation in beef cows. J.anim.Sci., 2000,78 (Suppl1) 219(abs).
82. SCHMITT E.J.-P., BARROWS C.M., FIELDS P.A., DIAZ T., KLUGE J.M., FIELDS M.J., THATCHER W.W. Effects of a day 5 GnRH-agonist or HCG injection on the original and induced corpus luteum. Biol. Reprod., 1994a, 50(suppl), 57(abstr).
83. SCHMITT E.J.-P., DIAZ T., DROST M., THATCHER W.W. Use a gonadotropin-releasing hormone agonist or human chorionic gonadotropin for timed insemination in cattle. J. Anim. Sci., 1996a, 74, 1084-1091.
84. SCHMITT E.J-P., BARROS C.M., FIELDS P.A., FIELDS M.J., DIAZ T., KLUGE J.M., THATCHER W.W. A cellular and endocrine characterization of the original and induced corpus luteum after administration of a gonadotropin-releasing hormone agonsit or human chorionic gonadotropin on day five of the estrous cycle. J. Anim. Sci., 1996c, 74, 1915-1929.
85. SCHMITT E.J-P., DIAZ T., BARROS C.M., DE LA SOTA R.L., DROST M., FREDRIKSSON E.W., STAPLES C.R., THORNER R., THATCHER W.W. Differential response of the luteal phase and fertility in cattle following ovulation of the first- wave follicle with human chorionic gonadotropin or an agonist of gonadotropin-releasing hormone. J. Anim. Sci., 1996b, 74, 1074-1083.
86. SEGUIN B.E., OXENDER W.D., BRITT J.H. Effect of human chorionic gonadotropin and gonadotropin-releasing hormone on corpus luteum function and estrous cycle duration in dairy heifers. Am. J. Vet. Res., 1977, 38, 1153-1156.
87. SIANANGAMA P.C., RAJAMAHENDRAN R. Effect of human chorionic gonadotropin administered at specific times following breeding on milk progesterone and pregnancy in cows. Theriogenology, 1992, 38, 85-96.
88. SIANANGAMA P.C., RAJAMAHENDRAN R.Effcet of hCG administration on day 7 of the estrous cycle on follicular dynamics and cycle lenght in cows. Theriogenology, 1996,45, 583-592.
89. STEVENSON J.S. Can Ovsynch conception rates be improved ? Hoard's dairyman. 2000a, Augustus 10, 513.
90. STEVENSON J.S., KOBAYASHI Y., THOMPSON K.E. Reproductive performance of dairy cows in various programmed breeding systems including Ovsynch and combination of gonadotropin-releasing hormone and prostaglandin F2a. J. Dairy Sci., 1999, 82, 506-515.
91. STEVENSON J.S., YASUHIRO KOBAYASHI, SHIPKA M.P., RAUCHHOLTZ K.C. Altering conception of dairy cattle by gonadotropin-releasing hormone preceding luteolysis induced by prostaglandin F 2a. J. Dairy SCI., 1996, 79, 402-410.
92. TALLAM S.K., KERBLER T.L., LESLIE K.E., BATEMAN K., JOHNSON W.H., WALTON J.S. Reproductive performance of post partum dairy cows under a highly intervenient breeding program involving timed insemination and combinations of GNRh, prostaglandin F 2a and human chorionic ganadotropin. Theriogenology, 2001, 56, 91-104.
93. TRIMBERGER G.W. Conception rate in dairy cattle by insemination at various intervals before and after ovulation. J. Dairy Sci., 1944, 27, 656-660.
94. TRIMBERGER G.W., DAVIS H.P. Breeding efficiencyin dairy cattle bred at various stages of estrus by artificial insemination. J. Dairy Sci., 1943, 757-759.
95. TWAGIRAMUNGU H., GUIBAULD L.A., PROULX J.G., DUFOUR J.J. Influence of corpus luteum and induced ovulationon ovarian follicular dynamics in postpartum cyclic cows treated with buserilin and cloprostenol. J. Anim. Sci., 1994a, 72, 1796-1805.
96. TWAGIRAMUNGU H., ROY G.L., LAVERDIERE G., DUFOUR J.J. Fixed-timed inseminationin cattle after synchronisation of estrus and ovulation with GnRH and prostaglandin. Theriogenology, 1995, 43, 341(abstr).
97. VASCONCELOS J.L.M., SILCOX R.W., ROSA G.J.M., PURSLEY J.R., WILBANK M.C. Synchronisation rate, size of the ovulatory follicle and pregnancy rate after synchronization on different days of the estrus cycle in lactating dairy cows. Theriogenology, 1999 , 52, 1067-1078.
98. VASCONSELOS J.L.M., SILCOX R.W., ROSA G.J., PURSLEY J.R., WILTBANK M.C. Synchronization rate, size of the ovulatory follicle and conception rate after synchronization of ovulation with GnRH on different days of the estroue cycle. J.Dairy Sci., 1997b ; 80(Abst.),178.
99. WALTON J.S., HALBERT G.W., ROBINSON N.A., LESLIE K.E. Effects of progesterone and human chorionic gonadotropin administration five days postinsemination on plasma and milk concentrations of progesterone and pregnancy rates of normal and repeat breeder dairy cows. Can. J. Vet. Res., 1990, 54, 305-308.
100. WATTS T.L., FUQUAY J.W. Response and fertility of dairy heifers following injection with prostaglandin F2a during early, middle or late diestrus. Theriogenology, 1985, 18, 191-197.
101. WEHNER G.R., WOOD C., TAGUE A., BARKER D., HUBERT H. Efficiency of the Ovatec unit for estrus detection and calf sex control in beef Cows. Anim. Reprod. Sci., 1997, 46, 27-34.
102. XU Z., BURTON L.J. Estrus synchronization of lactating dairy cows with GnRH, progesterone and prostaglandin F2alpha. J.Dairy Sci., 2000, 83, 471-476.
103. XU Z., BURTON L.J., MACMILLAN K.L. Reproductive performance of lactating dairy cows followingestrus synchronization regimens with PGF2a and progesterone. Theriogenology, 1997, 47, 687-701.


En poursuivant votre navigation sur ce site, vous acceptez l’utilisation de cookies pour vous proposer des services et offres adaptés à vos centres d’intérêts.X
Pour en savoir plus et paramétrer les cookies...