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See detailObservations sur l'utilisation de traitements gonadotropes répétés chez la chèvre laitière
Baril, Gérard; Remy, Benoît ULg; Vallet, J. C. et al

in Annales de Zootechnie (1992), 41(3-4), 291-296

Observations on the repeated use of gonadotropin treatments in the dairy goat. Our studies have attempted to determine if the absence of oestrus observed in some goats after fluorogestone acetate-pregnant ... [more ▼]

Observations on the repeated use of gonadotropin treatments in the dairy goat. Our studies have attempted to determine if the absence of oestrus observed in some goats after fluorogestone acetate-pregnant mare serum gonadotropin (FGA-PMSG) treatments could be due to its repeated use. An experiment was carried out in a Saanen flock, in which she-goats were submitted to FGA-PMSG treatment each year. The first treatment of the year was performed on 169 shegoats between March and August 1989. Of the females diagnosed as non-pregnant following the first treatment, 38 were treated a second time during the same period. The proportion of females which went into oestrus after the first treatment was lower in 59 multiparous goats than in 64 nulliparous and in 46 primiparous goats (64.4 vs 100 and 97.8%; P < O.Oi). For the she-goats treated twice, the percentage of females which went into oestrus after the second treatment was lower than that observed after the first treatment (44.7 vs 71.0%; P < 0.05). The presence of anti-PMSG antibodies in plasma was investigated in blood samples taken before and after each treatment. Results are expressed as % of radioactive PMSG bound by 10 pl of blood plasma. Before the first treatment, the percentage of bound PMSG was higher in multiparous than in nulliparous and primiparous goats (17.5 t 23.1 vs -0.06 t 0.7 ; 1.2 ± 1.9 ; P < 0.01), and increased after treatment for all parities. In goats treated twice, the percentage of bound PMSG before the second treatment was higher than that observed before first treatment (22.8 t 23. vs 11.2 f 19.7; P < 0.05). For both treatments, females which did not come into oestrus showed a percentage of bound PMSG which was significantly higher than that of goats in which oestrus was observed (multiparous first treatment: 30.5 f 23.6 vs 1I 2. 9 20. 1 %; she-goats in second treatment: 33.9 ± 23.1 vs 9.2 ± 14.5T.). When the percentage of bound PMSG before treatment was low (< 5°l) in multiparous goats, the oestrus and kidding rates after the first treatment did not differ from those observed in nulliparous and primiparous goats. The decrease in the efficiency of the treatments was therefore not due to the age of animals. The repeated use of FGA-PMSG during the lifetime of goats or within the same year is followed by an increase in the levels of antibodies against PMSG. The presence of those antibodies may explain the decrease in the efficiency of these treatments in inducing and synchronizing oestrus. [less ▲]

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See detailSilurian and Lower Emsian miospores from Saudi Arabia
Steemans, Philippe ULg

Conference (1992)

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See detailLe martin pêcheur: une cohabitation difficile
Libois, Roland ULg

Learning material (1992)

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See detailEtude des activateurs du plasminogène et de leurs inhibiteurs dans le système nerveux en développement.
Schoenen, Jean ULg; Lefebvre, P.; Delrée, P. et al

Conference (1992)

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See detailThe complexity of scheduling short tasks with few starting times
Crama, Yves ULg; Spieksma, Frits C.R.

Report (1992)

The following problem is proved to be NP-complete: given n tasks, such that each task has processing time \tau=2, and has no more than k=3 possible starting times, does there exist a feasible schedule for ... [more ▼]

The following problem is proved to be NP-complete: given n tasks, such that each task has processing time \tau=2, and has no more than k=3 possible starting times, does there exist a feasible schedule for these tasks on a single processor? This result establishes a sharp borderline between NP-complete and polynomially solvable versions of this problem with respect to the parameters \tau and k. [less ▲]

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See detailBeam-Laser Lifetime Measurements for the z 5P° and z 7P° Levels in Mn IIand Their Implications for a Revised Solar Manganese Abundance
Pinnington, E. H.; Guo, B.; Ji, Q. et al

in Journal of Physics : B Atomic Molecular & Optical Physics (1992), 25

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See detailL'aérosolthérapie : principes d'action et exigences techniques pour des résultats thérapeutiques optimaux
Genicot, Bruno; Mouligneau, Frédéric; Lekeux, Pierre ULg

in Annales de Médecine Vétérinaire (1992), 136

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See detailLa technique du ‘récit de paroles’ dans le roman français du dix-huitième siècle
Tilkin, Françoise ULg; Delbouille, Paul ULg

in Transactions of the Eighth International Congress on the Enlightenment , Bristol 21-27 July 1991. Actes du Huitième congrès international des Lumières, Bristol 21-27 juillet 1991, II (1992)

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See detailConcubinatus non turpat, note sous Trib. Liège, 2 octobre 1989
Gerkens, Jean-François ULg

in Actualités du Droit (1992), (4/1992), 1333-1339

Le concubinage fait naître une obligation naturelle de contribuer aux charges du ménage. Ce qui dépasse le montant de cette obligation naturelle peut faire l'objet d'une répétition pour enrichissement ... [more ▼]

Le concubinage fait naître une obligation naturelle de contribuer aux charges du ménage. Ce qui dépasse le montant de cette obligation naturelle peut faire l'objet d'une répétition pour enrichissement sans cause. [less ▲]

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See detailJournal de la réception d'un chanoine de Saint-Martin de Liège par le noble chapitre de Saint-Martin de Tours
George, Philippe ULg

in Bulletin de la Société Archéologique de Touraine (1992), XLIII

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See detailTransition Rates in the 3d2 Configuration of the Calcium Isoelectronic Sequence
Biémont, Emile ULg; Hansen, J. E.; Quinet, Pascal ULg et al

in Journal of Physics : B Atomic Molecular & Optical Physics (1992), 25

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See detailLes reliques de Lierneux. Un patrimoine à découvrir, p. 16-27.
George, Philippe ULg

in Van den Bossche, Benoît (Ed.) Patrimoine religieux du Pays de Lierneux, (1992)

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See detailElectric Dipole Transitions in Atomic Oxygen and the lifetimes of the 2p3(4S°)3s5S° and 3S° States
Biémont, Emile ULg; Zeippen, C. J.

in Astronomy and Astrophysics (1992), 265

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See detailIconographies de saints mosans : Luxembourg, B. Nat. Incunable M 289
George, Philippe ULg

in Bulletin de la Société Royale Le Vieux-Liège (1992)

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See detailLes confraternités de l'abbaye de Stavelot-Malmedy au Moyen Age
George, Philippe ULg

in Actes du Congrès de la Fédération Archéologique & Historique de Belgique (1992)

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See detailComment interpréter les résultats d'une série chronologique ?
Palm, Rodolphe ULg

Book published by Institut Technique des Céréales et des Fourrages (1992)

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See detailVal-Dieu et le Trésor de la Cathédrale de Liège, p. 26-31.
George, Philippe ULg

in Patrimoine de l'abbaye Notre-Dame du Val-Dieu (1992)

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See detailLes cellules enterochromaffin-like (ECL) : de la physiologie à la pathologie
Belaiche, Jacques ULg; Delwaide, Jean ULg; Louis, Edouard ULg et al

in Médecine et Hygiène (1992), 50

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See detailSensibilisation aux problèmes de l'avortement et de la contraception ainsi qu'à celui de l'éducation sexuelle
Naziri, Despina ULg

Conference given outside the academic context (1992)

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