[en] An echographic study of follicular growth up to ovulation was carried out on 42 lactating Azawakh cows (Bos indicus) after estrus induction by means of a PGF2α or a procedure involving the administration of progesterone vaginally (PRID® DELTA: Progesterone-releasing intravaginal device) for a ten-day period and the injection of a PGF2α and an eCG (400 and 800 IU) on withdrawal. All the animals treated in this way were inseminated 12 and 24 hrs after the onset of estrus. The percentage of estrus induced was not significantly different between the two groups of animals (81%). The average time delay before the onset of estrus was significantly longer after injection of a PGF2α (84.8 ± 26.0 hrs) than after withdrawal of the PRID® (59.2 ± 5.8 hrs). The average duration of the estrus was significantly shorter after its induction by PGF2α (12.6 ± 2.6 hrs) than after induction by progesterone (22.9 ± 2.7 hrs). There was not a significant difference in the interval between the beginning of estrus and ovulation in animals treated by PGF2α (30.3 hrs) and progesterone (28.4 hrs). Injection of a PGF2α was accompanied by a significantly lower rate of gestation than that obtained after treatment of animals by progesterone (31.2% vs 54.5 %). These results confirm the necessity to adapt an insemination policy to hormonal treatment for estrus induction in Bos indicus.
Baruselli, P.S., Reis, E.L., Marques, M.O., Nasser, L.F., Bóa, G.A., The use of hormonal treatments to improve reproductive performance of anestrous beef cattle in tropical climates (2004) Animal Reproduction Science, 82-83, pp. 479-486
Beal, W.E., Application of knowledge about corpus luteum function in control of estrus and ovulation in cattle (1996) Theriogenology, 45, pp. 1399-1411. , COI: 1:STN:280:DC%2BD28zgtVKntg%3D%3D
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 (1995) Anim. Reprod. Sci., 39, pp. 193-204. , COI: 1:CAS:528:DyaK2MXotVams74%3D
Cissé, A.B., Synchronisation des chaleurs chez des vaches Ndama et zébu Maure Avec La Prostaglandine F2α. In : Maitrise de la reproduction et amélioration génétique des ruminants. Apport Des Technologies Nouvelles, Actualités Scientifiques AUPELF-UREF (1993) Dakar NEAS, pp. 21-26
Denis, J., Thiongane, A., Caractéristiques de la reproduction chez le zébu étudié au centre de recherches zootechniques de Dahra (1973) Rev. Elev. Méd. Vét. Pays Trop., 26 (4), pp. 49-60
Hanzen, C., Boudry, B., Drion, P.V., Induction et synchronisation de l’estrus par la PgF2α (2003) Le Point Vétérinaire / N° 236 / Juin, 2003, pp. 22-23
Hanzen, C., Laurent, Y., Application des progestagènes au traitement de l’anestrus fonctionnel dans l’espèce bovine (1991) Ann. Méd. Vét., 135, pp. 547-557
Issa, M., Marichatou, H., Semita, C., Nervo, T., Yénikoye, A., Cristofori, F., Gabriella, T., Comparative study of two methods of induction of estrus and fertility following artificial insemination in azawak Zebu in Niger (2013) Journal of life sciences, 7 (5), pp. 527-531
Lane, E.A., Austin, E.J., Crowe, M.A., Estrous synchronization in cattle current options following the EU regulations restricting use of estrogenic compounds in food-producing animals: A review (2008) Animal Reproduction Science, 109 (2008), pp. 1-16. , COI: 1:CAS:528:DC%2BD1cXht12gu7%2FJ
Lucy, M.C., McDougall, S., Nation, D.P., The use of hormonal treatments to improve the reproductive performance of lactating dairy cows in feedlot or pasture-based management systems (2004) Animal Reproduction Science, 82-83, pp. 495-512
Marichatou, H., Issa, M., Hamadou, I., Assane, M., Semita, C., Efficacité de la synchronisation des chaleurs et insémination artificielle chez le bovin Azawak: intérêt du profil de progestérone (2010) Tropicultura, 28 (3), pp. 161-167
Mbaye, M., Ndiaye, M., Etude des chaleurs et de la fertilité après un Traitement de maîtrise de la reproduction chez la vache zébu Gobra (1993) Actualité Scientifique, pp. 27-37
Mialot, J.P., Ponsart, C., Gipoulou, C., Bihoreau, J.L., Roux, M.E., Deletang, F., The fertility of autumn calving suckler beef cows is increased by the addition of prostaglandin to progesterone and ECG estrus synchronization treatment (1998) Theriogenology, 49, pp. 1353-1363. , COI: 1:CAS:528:DyaK1cXjsVOru78%3D
Moussa Garba, M., Issa, M., Marichatou, H., Okouyi, M.W.M., Kamga-Waladjo, A.R., et Hanzen, C., Caractéristiques et performances de reproduction du Zébu. Le cas du Niger (2014) RASPA, 12 (3-4), pp. 135-141
Mukasa-Mugerwa, E., Mattoni, M., Estrous behavior in zebu cattle (1988) IFS/SIPAR Joint seminar on animal reproduction for African countries Addis Ababa, pp. 56-64
Rekwot, P.I., Oyedipe, E.O., Mukasa Mugerwa, E., Sekoni, V.O., Akinpelumi, O.P., Anyam, A.A., Fertility in zebu cattle Bos indicus after prostaglandin administration and artificial insemination (1999) Veterinary Journal, 158 (1), pp. 53-58. , COI: 1:CAS:528:DyaK1MXlsFWnsbo%3D
Rhodes, F.M., Burke, C.R., Clarck, B.A., Day, M.L., MacMillan, K.L., Effect of treatment with progesterone and oestradiol benzoate on ovarian follicular turnover in postpartum anestrous cows and cows which have resumed oestrous cycles (2002) Anim. Reprod. Sci., 69, pp. 139-150. , COI: 1:CAS:528:DC%2BD38Xms1CisA%3D%3D
Roelofs, J.B., Van Eerdenburg, F.J., Soede, C.M., Kemp, B.N.M., Pedometer readings for estrous detection and as predictor for time of ovulation in dairy cattle (2005) Theriogenology, 64, pp. 1690-1703
Sa’ Filho, O.G., Meneghetti, M., Peres, R.F.G., Lamb, G.C., Vasconcelos, J.L.M., Fixed-time artificial insemination with estradiol and Progesterone for Bos Indicus Cows II: Strategies and factors affecting fertility (2009) Thériogenology, 72, pp. 210-218
Sokouri, D.P., Yapi-Gnaore, C.V., N’guetta, A.S.P., Loukou, N.E., Kouao, B.J., Toure, G., Kouassi, A., Sangare, A., Performances de reproduction des races bovines locales de Côte d’Ivoire (2010) J. Appl. Biosci., 36, pp. 2353-2359
Stevenson, J.S., Kobayashi, Y., Shipka, M.P., Rauchholtz, K.C., Altering conception of dairy cattle by gonadotropin-releasing hormone preceding luteolysis induced by prostaglandin F 2a (1996) J. Dairy SCI., 79, pp. 402-410. , COI: 1:CAS:528:DyaK28XisFGmsrY%3D
Tegegne, A., Warnick, A.C., Musaka-Mugerwa, E., Ketema, H., Fertility of Bos indicus and bos indicus x bos taurus crossbreeds cattle after estrus synchronization (1989) Theriogenology, 31, pp. 361-370. , COI: 1:STN:280:DC%2BD283pvFehsg%3D%3D
Voh, A.A., Jr., Larbi, A., Olorunju, S.A.S., Agyemang, K., Abiola, B.D., Et Williams, T.O., Fertility of N’dama and Bunaji cattle to artificial insemination following estrus synchronization with PRID and PGF2α in the hot humid zone of Nigeria (2004) Trop. Anim. Health Prod., 36 (5), pp. 499-511
Vounparet, Z., Mopate, L.Y., Nadjilem, D., Djonret, D., Evaluation of two methods of estrus synchronization of cattle in Chad (2014) Journal of Animal Science, 4, pp. 13-17
Walker, W.L., Nebel, R.L., Mcgllllard, M.L., Time of ovulation relative to mounting activity in dairy cattle (1996) J Dairy Sci, 79, pp. 1555-1561. , COI: 1:CAS:528:DyaK28Xmt1KmsbY%3D
Wéré, P., Moussa, Z., Hamidou, B., Laya, S., Pascal, L., Beckers, J.F., Messanvi, G., étude de l’estrus et de la fertilité après un traitement de maîtrise des cycles chez les femelles zébus Int (2012) J. Biol. Chem. Sci., 6, pp. 257-263
Wéré, P., Moussa, Z., Hamidou, B., Noelita, M., Laya, S., Leroy, P., Beckers, J.-F., Et Messanvi, G., Application de l’échographie en reproduction chez le zébu goudali (2012) Int. J. Biol. Chem. Sci., 6 (5), pp. 2055-2065
Zongo, M., Boly, H., Sawadogo, Pitala, W., Souza, N.M., Beckers, J.F., Et Leroy, P., Insémination artificielle des vaches zebus ‘azawak’ et taurins ‘grurunsi’ au burkina faso (2001) Tropicultura, 19 (2), pp. 75-78
Zongo, M., Bayala, B., Pitala, W., Meyer, C., Boly, H., Sawadogo, L., Induction d’estrus et insémination artificielle chez les zébus azawak et zébus (2012) Goudali Au Burkina Faso Tropicultura, 32 (1), pp. 54-61