Article (Scientific journals)
Plasma luteinizing hormone and progesterone concentrations in Azawak zebu cows submitted to different estrus synchronization protocols.
Zongo, M.; Pitala, W.; Sawadogo, L. et al.
2008In Revue d'Élevage et de Médecine Vétérinaire des Pays Tropicaux, 61 (3-4), p. 221-227
Peer Reviewed verified by ORBi
 

Files


Full Text
ZongoM_RevElevMedVetPaysTrop_2008.pdf
Publisher postprint (411.61 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Bos indicus; Azawak cow; Estrus synchronization; LH; Progesterone; Radioimmunoassay; Burkina Faso
Abstract :
[en] The percentage of estrus induction and plasma LH concentrations were examined in 15 Azawak zebu cows submitted to two different estrus synchronization protocols. In the first treatment (T1, n = 9), the cows received a norgestomet ear-implant for 10 days associated with estradiol valerate, prostaglandin F2alpha (PGF2alpha) and pregnant mare serum gonadotropin (PMSG) injections. Treatment 2 (T2, n = 6) consisted in two PGF2alpha injections 11 days apart, followed by the administration of PMSG two days after the second prostaglandin injection. Blood samples were collected every three hours during five days after implant removal (T1) or PMSG injection (T2) for LH measurements. The proportion of induced estrus was higher in T2, but the difference was not significant. In general, the elapsed time until the estrus onset tended to be shorter in norgestomet-treated animals (35.9 ± 3.9 h) than in prostaglandin-treated ones (49.5 ± 5.8 h). Seven out of nine norgestomet-treated cows, and only two out of the six treated with PGF2alpha, presented a peak of LH. The mean interval from the end of treatments to LH peak tended to be longer in PGF2-treated females than in norgestomet-treated ones. One female presenting abnormally high LH concentrations after implant removal did not show a peak of LH during the observation period.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Zongo, M.
Pitala, W.
Sawadogo, L.
Boly, H.
Melo de Sousa, Noelita ;  Université de Liège - ULiège > Département de sciences fonctionnelles > Physiologie de la reproduction
Sulon, J.
Beckers, Jean-François  ;  Université de Liège - ULiège > Département de sciences fonctionnelles > Physiologie de la reproduction
Language :
English
Title :
Plasma luteinizing hormone and progesterone concentrations in Azawak zebu cows submitted to different estrus synchronization protocols.
Publication date :
2008
Journal title :
Revue d'Élevage et de Médecine Vétérinaire des Pays Tropicaux
ISSN :
0035-1865
eISSN :
1951-6711
Publisher :
Vigot Freres, Paris, France
Volume :
61
Issue :
3-4
Pages :
221-227
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Belgian Ministry of Agriculture, Agence universitaire de la Francophonie, Intervet International
Available on ORBi :
since 14 December 2011

Statistics


Number of views
84 (8 by ULiège)
Number of downloads
12 (1 by ULiège)

Bibliography


Similar publications



Contact ORBi