BOURABAH A., AYAD A., HAMMOUDI S.M., BOUKRAA L., BENBAREK H.

Antimicrobial activity of Algerian honey against subclinical mastitis pathogens isolated from goat's milk.

Veterinary World vol: 7(4), pp: 248-252, 2014 .

Document

Y. BELLIK, F. BENABDESSELAM, A. AYAD, Z. DAHMANI, A. NEMMAR, L. BOUKRAA, M. IGUER-OUADA.

Antioxidant activity of the essential oil and oleoresin of Zingiber Officinale Roscoe is affected by chemical environment.

International Journal of Food Properties vol: 16(6), pp: 1304-1313, 2013 .

BOURABAH A. AYAD A., BOUKRAA L., HAMMOUDI S.M., BENBAREK H.

Prevalence and etiology of subslinical mastitis in goats of the Tiaret region, Algeria.

Global Veterinaria vol: 11(5), pp: 604-608, 2013 .

Document

H. BENBAREK, A. AYAD, G. DEBY-DUPONT, L. BOUKRAA, D. SERTEYN

Modulatory effects of non-steroidal anti-inflammatory drugs on the luminol and lucigenin amplified chemiluminescence of equine neutrophils.

Veterinary Research Communication vol: 36, pp: 29-33, 2012 .

A. AYAD, K. TOUATI, M. IGUER-OUADA, H. BENBAREK

Different factors affecting the embryonic mortality in cattle.

Research Opinions in Animal and Veterinary Sciences vol: 2(11), pp: 559-572, 2012 .

Document

SAIDI M., AYAD A., BOULGABOUL A., BENBAREK H.

Etude prospective du parasitisme interne des ovins dans une région steppique : cas de la région de Ain D'heb.

Annales de Médecine Vétérinaire vol: 154, pp: 224-230, 2009 .

Document

A. AYAD, N.M. SOUSA, J. SULON, M. IGUER-OUADA, J.F. BECKERS.

Correlation of five radioimmunoassay systems for measurement of bovine plasma pregnancy-associated glycoprotein concentrations at early pregnancy period.

Research in Veterinary Science, 2009, 86(3):377-82. vol: 86(3), pp: 377-82., 2009 .

F. LOPEZ-GATIUS, J.M. GARBAYO, P. SANTOLARIA, J YANIZ, A. AYAD, N.M. DE SOUSA, J.F. BECKERS

Milk production correlates negatively with plasma levels of pregnancy-associated glycoprotein (PAG) to plasma pregnancy-associated glycoprotein (PAG) during the early fetal period

Domestic Animal Endocrinology vol: 32(1), pp: 29-42, 2007 .

F. LÓPEZ-GATIUS, J.M. GARBAYO, P. SANTOLARIA, J.L. YÁNIZ, S. ALMERÍA, A. AYAD, N.M. DE SOUSA, J.F. BECKERS

Plasma pregnancy-associated glycoprotein (PAG) concentration throughout gestation in Neospora-seropositive dairy cows

Theriogenology vol: 67(3), pp: 502-508, 2007 .

A. AYAD, N.M. SOUSA, J. SULON, M. IGUER-OUADA, J.F. BECKERS.

Comparison of five radioimmunoassay systems for PAG measurement: ability to detect early pregnancy in cows

Reproduction in Domestic Animals vol: 42(4), pp: 433-40, 2007 .

A. AYAD, N.M. SOUSA, J. SULON, JL. HORNICK, J. WATTS, F. LOPEZ-GATIUS, M. IGUER-OUADA, J.F. BECKERS.

Influence of progesterone concentrations on secretory function trophoblast and pituitary during the first of pregnancy in dairy cattle.

Theriogenology vol: 67, pp: 1503-1511, 2007 .

F. LÓPEZ-GATIUS, R.H.F. HUNTER, J.M. GARBAYO, P. SANTOLARIA, J YÁNIZ, B. SERRANO, A. AYAD, N.M. DE SOUSA, J.F. BECKERS.

. Plasma concentrations of pregnancy-associated glycoprotein-1 (PAG-1) in high producing dairy cows suffering early fetal loss during the warm season.

Theriogenology vol: 67(8), pp: 1324-1330, 2007 .

N. M. SOUSA, A. AYAD, J.F. BECKERS, Z. GAJEWSKI

Pregnancy-associated glycoprotein (PAG) as a pregnancy marker in the ruminants.

Journal of Physiology and Pharmacology vol: 57(8), pp: 158-171, 2006 .

Document

A. AYAD, N.M. SOUSA, J. SULON, J.L. HORNICK, K.TOUATI, M. IGUER-OUADA, J.F. BECKERS

Endocrinologie de la gestation chez la vache: Signaux embryonnaires, hormones et protéines placentaires

Annales de Médecine Vétérinaire vol: 150(4), pp: 212-226, 2006 .

Document

A. AYAD, M. IGUER-OUADA, H. BENBAREK

Electrochemiluminescence immunoassay of the testosterone by using a heterologous system in plasma ovine: Preliminary study.

November 27-29, 2013 Marseille, France.

A. AYAD, H. BENBAREK, Y. BELLIK, M. IGUER-OUADA.

Evaluation of norgestomet crestar® in the reproduction performance of dairy cattle: case of the area of the bass kabylie, Algeria.

December 16-19, 2011 Marseille, France.

Y. BELLIK, F. BENABDESSELAM, A. AYAD, Z. DAHMANI, L. BOUKRAA, A. NEMMAR, M. IGUER-OUADA

Antioxidant activity of the essential oil and oleoresin of zingiber officinale roscoe is affected by chemical environment.

April, 13th-15th, 2011 Cagliari, Italy.

AYAD A., BENBAREK H., BELLIK Y., IGUER-OUADA M.

The ability of human progesterone chemiluminescence immunoassay kit to measure progesterone in bovine plasma: preliminary study.

20th-24th June , 2010 Ghent, Belguim.

IGUER-OUADA M., AYAD A., TOUAZI L., ABRKANE B.

Reproductive performance of dairy cows in small and large production systems in Algeria.

20th-24th June , 2010 Ghent, Belguim.

AYAD A., BENBAREK H., BELLIK Y., IGUER-OUADA M.

Reproduction performance of dairy cattle in northern Algeria: Preliminary results.

December 1st; 2nd and 3rd, 2009 Marseille, France.

AYAD A., SOUSA N.M., BELLA A., IGUER-OUADA M., BECKERS J.F.

No effect of parity on concentrations bovine pregnant associated glycoprotein (PAGs) measurement by radioimmunoassay.

November 20th-23rd, , 2008 Utrecht, Netherlands..

AYAD A., SOUSA N.M., HORNICK J.L., IGUER-OUADA M., BECKERS J.F.

Effect of protease inhibitors on parameters of bovine pregnancy-associated glycoprotein (bPAG) radioimmunoassay.

March 21st-22nd, 2007 Aachen, Germany..

AYAD A., SOUSA N.M., BELLA A., IGUER-OUADA M., BECKERS J.F.

Pregnancy-associated glycoprotein (PAG) concentrations during the post partum period in four non-pregnant cows.

March 21st-22nd, 2007 Aachen, Germany.

AYAD A., SOUSA N.M., SULON J., IGUER-OUADA M., BECKERS J.F.

Effet de la progestérone sur le trophoblaste et la glande pituitaire durant le premier trimestre de la gestation chez la vache laitière.

Novembre, 2007 aculté Agro-Vétérinaire, Université de Blida. Algérie.

AYAD A., SOUSA N.M., SULON J., IGUER-OUADA M., BECKERS J.F

The ability of five radioimmunoassay systems to detect early pregnancy-associated glycoprotein in bovine plasma.

September 8th – 9th, 2006 Zug, Switzerland.

AYAD A., SOUSA N.M., SULON J., IGUER-OUADA M., BECKERS J.F.

Progesterone, luteinizing hormone, prolactin and pregnancy-associated glycoproteins during the first trimester of pregnancy in cattle.

September 8th – 9th, 2006 Zug, Switzerland.

N. M. SOUSA, A. AYAD, J.F. BECKERS, AND Z. GAJEWSKI.

Pregnancy-associated glycoprotein (PAG) as a pregnancy marker in the ruminants.

14-16 september , 2006 Warsaw, Poland .

F. LÓPEZ-GATIUS, J.M. GARBAYO, P. SANTOLARIA, J.L. YÁNIZ, S. ALMERÍA, A. AYAD, N.M. DE SOUSA, J.F. BECKERS.

Cross-breed pregnancies were associated with higher plasmatic pregnancy-associated glycoprotein (PAG) concentration throughout gestation in Neospora-seropositive dairy cows.

Octobre, 2006 Murcia, Spain.

Document

AYAD A., SOUSA N.M., SULON J., CLERGET E., IGUER-OUADA M., BECKERS J.F.

Specificity of different RIA systems for measurement of bovine pregnancy associated glycoproteins against carbohydrates and placental hormones.

May 17th, 2006 Liège, Belgium..