References of "Van Soom, Ann"
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See detailReproduction in the endangered African wild dog: basic physiology, reproductive suppression and possible benefits of artificial insemination
Van Den Berghe, Femke ULg; Paris, Damien; Van Soom, Ann et al

in Animal Reproduction Science (2012), 133

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See detailEffect of Deferoxamine Mesylate on Freezability of Blood Supplemented Canine Semen
Van Den Berghe, Femke ULg; Rijsselaere, Tom; Van Soom, Ann et al

Poster (2011, September)

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See detailPreservation and shipment of chilled and cryopreserved dog semen
Rijsselaere, Tom; Van Den Berghe, Femke ULg; Van Soom, Ann

in Vlaams Diergeneeskunde Tijdschift = Flemish Veterinary Journal (2011)

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See detailUse of a homologous radioimmunoassay (RIA) to evaluate the effect of maternal and foetal parameters on pregnancy-associated glycoprotein (PAG) concentrations in sheep
Vandaele, Leen; Verberckmoes, S.; El Amiri, Bouchra et al

in Theriogenology (2005), 63(7), 1914-1924

Early pregnancy detection and prediction of the number of lambs would be profitable for sheep breeders because it enables them to adjust nourishment of pregnant ewes according to the individual needs in ... [more ▼]

Early pregnancy detection and prediction of the number of lambs would be profitable for sheep breeders because it enables them to adjust nourishment of pregnant ewes according to the individual needs in order to prevent health problems around parturition. The concentration of ovPAG has previously been reported to be related with maternal parameters (farm, breed and age) as well as foetal parameters (number of lambs, their sex and birth weight), but contradictory results were obtained in different small-scale studies. This large-scale study evaluates the effect of these parameters on the ovPAG concentration, determined by a homologous radioimmunoassay (RIA), and it further investigates the possibility to predict the number of lambs by means of homologous ovPAG determination. Eighty-three and ninety-five ewes of the Suffolk and Texel breed, respectively, housed on four different farms (experiment 1) and 68 ewes of the Suffolk breed, housed on two different farms During the last 6 weeks of pregnancy determination of 3-OH butyrate can be used to determine a necessary nutrition correction [4]. In conclusion, the present study has shown an effect of different parameters such as farm, breed of the ewes, and number and birth weight of the lambs on ovPAG concentrations at all time points. Prediction of litter size based on ovPAG concentrations at the individual ewe level was not useful due to small sensitivity and/or specificity, notwithstanding significantly increased odds of multiple lambs. Furthermore, age of the ewes and sex did not have an impact oil ovPAG levels. [less ▲]

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See detailPorcine embryo development and fragmentation and their relation to apoptotic markers: a cinematographic and confocal laser scanning microscopic study.
Mateusen, Bart; Van Soom, Ann; Maes, Dominiek G D et al

in Reproduction (Cambridge, England) (2005), 129(4), 443-52

Porcine embryo selection prior to transfer is mainly influenced by morphological criteria. However, the relationship between embryonic morphology, developmental potential and cell death by apoptosis in ... [more ▼]

Porcine embryo selection prior to transfer is mainly influenced by morphological criteria. However, the relationship between embryonic morphology, developmental potential and cell death by apoptosis in porcine embryos is still unclear. The aim of this study was to establish embryo quality parameters for in vivo fertilised porcine embryos based on timing of development in vitro, embryo morphology and the presence of apoptosis. The kinetics of development and morphological parameters were investigated in a time-lapse cinematographic experiment. Possible links between embryo morphology and apoptosis were examined via a confocal laser scanning experiment, analysing nuclear changes, annexin V and terminal dUTP nick-end labelling. The timing of early cleavages was firmly linked to embryo developmental competence in vitro. Attainment of at least the 5-cell stage before 77 h post insemination and attainment of the morula stage before 102 h post insemination significantly increased the odds for reaching the early blastocyst stage. Overall, a negative effect of fragmentation percentage and fragmentation pattern on subsequent embryonic development was observed, but the developmental potential of embryos experiencing slight fragmentation (0-5%) was not different from embryos without fragmentation. Correlations detected between developmental arrest and fragmentation, and fragmentation and apoptosis were 0.60 and 0.87 (P < 0.05) respectively. Only a minority of the embryos arrested between the 1- and 4-cell stage displayed biochemical characteristics of apoptosis. Consequently, a significant correlation (0.57) between developmental arrest and apoptosis could only be established for embryos arrested after embryonic genome activation. [less ▲]

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