References of "Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE]"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailSensitivity of follicles from prepubertal calves ovaires to in vitro stimulation with LH and FSH
Bister, J.L; De roover, R; Dessy, F et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(1), 15-16

Ovaries from prepubertal calves were harvested in an abattoir and quickly brought to the laboratory for the dissection of the follicles. The intact entire follicles were put in individual chambers and ... [more ▼]

Ovaries from prepubertal calves were harvested in an abattoir and quickly brought to the laboratory for the dissection of the follicles. The intact entire follicles were put in individual chambers and continuously perifused with TCM199 at the rate of 1ml/30 min. The medium was added LH at the time 60–90 min and FSH at the time 120–180 min. The perifusion lasted 5 hours and the perifused medium was collected every 30 min. The samples were assayed for Progesterone, D4-Androstenedione and Estradiol. Four different stimulations were assayed: LH +FSHc (FSH commercial with an estimated 20% LH contamination), LH + FSHp (pure FSH, with 0% LH activity), FSHc alone, and FSHp alone. No difference were observed between the treatments; this confirms the results of De Roover eet al. (this workshop) that the absence of LH is not the reason for the lack of Estradiol peak after FSH stimulation of calves ovaries in vivo. Only large follicles (diameter ³ 13 mm) were able to produce Estradiol in vitro. According to the follicular size, no difference can be measured in D4 production, but medium sized follicles produced significantly more Progesterone than small or large ones. It can be interpreted as a growing ability to produce Progesterone and the late acquisition of ability to produce Estradiol. The observation of the small proportion of follicles with diameter ³ 13 mm may be the explanation of the lack of E2 peak production after in vivo stimulation. High levels of Estradiol are suspected to be necessary for the acquisition of the oocyte competency to develop into viable embryos. The incapability of most of the follicles present in ovaries of prepubertal calves to produce significant level of E2 might be the reason of the poor results in embryo development after ovum pick-up in this kind of animal. [less ▲]

Full Text
Peer Reviewed
See detailUtilisation du bootstrap pour les problèmes statistiques liés à l'estimation des paramètres.
Palm, Rodolphe ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(3),

Detailed reference viewed: 34 (1 ULg)
Full Text
Peer Reviewed
See detailAnalyse de l'impact physiologique et economique de l'elagage des arbres d'alignement en port libre.
Toussaint, André ULg; Kervyn de Meerendre, V.; Delcroix, B. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(2), 99-107

Detailed reference viewed: 10 (4 ULg)
Full Text
Peer Reviewed
See detailComparaison des cahiers des charges de filières de production porcine sous « signe de qualité » en Région wallonne.
Degre, Aurore ULg; Verheve, Didier; Debouche, Charles ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(4), 221-230

Detailed reference viewed: 15 (2 ULg)
Full Text
Peer Reviewed
See detailEffet de la parité sur les paramètres métaboliques et hormonaux de la femelle de réforme Blanc-Bleu Belge cularde
Cabaraux, Jean-François ULg; Hornick, Jean-Luc ULg; de Behr, V. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(1), 5-16

Detailed reference viewed: 11 (2 ULg)
Full Text
Peer Reviewed
See detailStudy of the early abortion in reciprocal crosses between Phaseolus vulgaris L. and Phaseolus polyanthus Greenm
Geerts, P.; Toussaint, André ULg; Mergeai, Guy ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(2), 109-119

Detailed reference viewed: 26 (9 ULg)
Full Text
Peer Reviewed
See detailÉtude dendrométrique d’Acacia auriculiformis A. Cunn. ex Benth. en mélange sur vertisol au Bénin
Fonton, N. H.; Glele Kakai, R.; Rondeux, Jacques ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(1), 29-37

Acacia auriculiformis is a fast growing species planted on vertisols in Benin. An inventory of 11 mixed stands of Acacia, which are 7 to 9 years old, has been realized to estimate growth parameters of the ... [more ▼]

Acacia auriculiformis is a fast growing species planted on vertisols in Benin. An inventory of 11 mixed stands of Acacia, which are 7 to 9 years old, has been realized to estimate growth parameters of the stands. The present study shows that, for the dendrometrical parameters, there is no difference between species associations at a 0.05 significance level. Nevertheless, the largest values of quadratic mean diameter of the stems foot are observed in the species associations including Leucaena leucocephala. Moreover, the branch volume decreases with the increasing of the number of stems per tree. The most appropriate volume function for Acacia auriculiformis is the one that takes into account the diameter of the stems foot and the total height. Otherwise, the species associations do not influence the profile of Acacia trees, which is constant within the associations. The predicted conversion and cutting coefficients show that the stacked wood volume represents about 144 % of the real stand volume. [less ▲]

Detailed reference viewed: 126 (13 ULg)
Full Text
Peer Reviewed
See detailRevue bibliographique: les methodes chimiques d'identification et de classification des champignons.
Verscheure, M.; Lognay, Georges ULg; Marlier, M.

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(3), 131-142

For few years, advancements of molecular methods and analytical techniques enabled scientists to realise a classification of microorganisms based on biochemical characteristics. This classification ... [more ▼]

For few years, advancements of molecular methods and analytical techniques enabled scientists to realise a classification of microorganisms based on biochemical characteristics. This classification, called chemotaxonomy, includes molecular methods and chemical methods which provide additional data and lead to a better identification and/or classification. [less ▲]

Detailed reference viewed: 210 (2 ULg)
Full Text
Peer Reviewed
See detailMise au point d'un modèle cartographique pour la description des stations forestières en Ardenne belge.
Claessens, Hugues ULg; Lejeune, Philippe ULg; Cuvelier, M. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(4), 209-220

The paper presents an original method dealing with the forest site types delineation. The suggested method consists in integrating a typological key in a GIS aiming at producing a thematic map that ... [more ▼]

The paper presents an original method dealing with the forest site types delineation. The suggested method consists in integrating a typological key in a GIS aiming at producing a thematic map that describes forest site types. Data used are the soil map of Belgium (digitized at the scale 1:20,000) and a digital elevation model built from a topographic map (scale 1:10,000). The typological key is mainly based on the methodology used by Thill et al. (1988) in the site types system for central Ardenne, the potential vegetation map of Sougnez and Dethioux (1975) and the ecoregion map of Delvaux and Galoux (1962). In that respect, site types are closely linked to the soil map and the phytosociological classification. So, they can be connected to the afforestation guide and different phytosociological and autecological studies concerning forest species. It is then possible to map the potential habitats or the site potentialities related to tree species. The key is valid for the Ardenne ecoregion located in Southern Belgium (elevation higher than 300 m). It has to be validated through an intensive use in the field, taking into account its imprecision linked to the types of collected data, chieffly those being digitized. The integration of such a tool in a SIG can be considered as an original way in terms of integrated forest management or forest sites description in the context of the project “Natura 2000” launched by the European Union. The study has been carried out within the framework of an experimental integrated management project concerning the Saint-Hubert forest (17,000 ha). [less ▲]

Detailed reference viewed: 141 (29 ULg)
Full Text
Peer Reviewed
See detailChoice of probing site for estimation of carcass lean percentage in Piétrain pig using the real-time ultrasound
Youssao, A. K. L.; Verleyen, Vincent ULg; Michaux, Charles ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(4), 195-200

Detailed reference viewed: 4 (0 ULg)
Full Text
Peer Reviewed
See detailEarly pregnancy diagnosis in sheep by progesterone and pregnancy-associated glycoprotein tests.
Karen, A.; Beckers, Jean-François ULg; Sulon, J. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(1), 8

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailPregnancy-associated glycoprotein profiles of 5 heifers measured by three radioimmunoassay systems.
Perenyi, Z.; Desbuleux, H.; Sulon, J. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(1), 6-7

Detailed reference viewed: 3 (0 ULg)
Full Text
Peer Reviewed
See detailPurification and characterization of a pregnancy-associated glycoprotein (ovPAG-6) from sheep placenta removed between 66 to 100 days of gestation.
El Amiri, B.; Remy, B.; Melo de Sousa, Noelita ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(1), 12-13

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailPepsinogen and progesterone concentration during pregnancy in sows.
Banga-Mboko, H.; Thilman, P.; Desbuleux, H. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(1), 12-13

Detailed reference viewed: 13 (2 ULg)
Full Text
Peer Reviewed
See detailPregnancy-associated glycoprotein concentrations during pregnancy and postpartum periods in zébu cattle.
Melo de Sousa, Noelita ULg; Zongo, M.; Pitala, W. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(1), 10-11

Detailed reference viewed: 3 (0 ULg)
Full Text
Peer Reviewed
See detailIsolation and Radioimmunoassay Formation of Equine Osteocalcin- Preliminary Results
Carstanjen, B; Sulon, J; Banga-Mboko, H et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2002), 6(1), 8-9

Detailed reference viewed: 2 (0 ULg)
Full Text
Peer Reviewed
See detailConsidérations sur l'analyse statistique de données sensorielles
Claustriaux, Jean-Jacques ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2001), 5(3), 155-158

This publication introduces some steps to build an adequate statistical data analysis for sensory studies.

Detailed reference viewed: 16 (2 ULg)
Full Text
Peer Reviewed
See detailLes bioindustries fertilisent la valorisation
Thonart, Philippe ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2001), 5(3), 131-134

Detailed reference viewed: 6 (2 ULg)
Full Text
Peer Reviewed
See detailLa divinyl éther synthase de plantes
Hoyaux, P.; Fauconnier, Marie-Laure ULg; Delcarte, J. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2001), 5(2), 79-84

Divinyl ether synthase, an enzyme of the lipoxygenase pathway transforms, in potato tubers, 9-hydroperoxides of fatty acids into colneleic and colnelenic acid, two divinyl ethers of fatty acids. The ... [more ▼]

Divinyl ether synthase, an enzyme of the lipoxygenase pathway transforms, in potato tubers, 9-hydroperoxides of fatty acids into colneleic and colnelenic acid, two divinyl ethers of fatty acids. The enzyme has been described in a limited number of quite different plants. The enzyme has also been detected in tomato roots, garlic bulbs, tobacco plants and in marine algae. The enzyme is bound to membranes and is located in the microsomal fraction. The molecular weight of the enzyme exceeds 100,000 Da, its optimal pH is around 9 and its high specificity for 9-hydroperoxides as substrate is described. The reactional mechanism has been elucidated using radio-labelled molecules. Colneleic and colnelenic acid can be degraded enzymatically or not into aldehydes and oxo-acids. Those last compounds are also formed by the action of hydroperoxide lyase on 9-hydroperoxides of fatty acids. As other enzymes of the lipoxygenase pathway, reaction products of divinyl ether synthase are involved in pathogenic resistance. Colneleic and colnelenic acid content in potato plants has been corelated with resistance to Phytophthora infestans. [less ▲]

Detailed reference viewed: 9 (4 ULg)
Peer Reviewed
See detailEmissions gazeuses en élevage porcin et modes de réduction : revue bibliographique
Degre, Aurore ULg; Verheve, Didier; Debouche, Charles ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2001), 5(3), 135-143

Detailed reference viewed: 36 (12 ULg)