A5024125034- Reproductive Physiology in Livestock
- Animal Behavior and Welfare Studies
- Reproductive Biology and Fertility
- Genetic and phenotypic traits in livestock
- Animal Nutrition and Physiology
- Animal health and immunology
- Veterinary Medicine and Surgery
- Reproductive System and Pregnancy
- Neonatal Respiratory Health Research
- Effects of Environmental Stressors on Livestock
- Pregnancy-related medical research
- Neonatal and fetal brain pathology
- Amphibian and Reptile Biology
- Preterm Birth and Chorioamnionitis
- Assisted Reproductive Technology and Twin Pregnancy
- Veterinary Equine Medical Research
- Craniofacial Disorders and Treatments
- Evolution and Paleontology Studies
- Ovarian function and disorders
- Morphological variations and asymmetry
- Neuroendocrine regulation and behavior
- Animal Behavior and Reproduction
- Spinal Fractures and Fixation Techniques
- Infant Health and Development
- Neuroscience of respiration and sleep
Institut des Maladies Génétiques Imagine
2024
Hôpital Necker-Enfants Malades
2022-2024
Assistance Publique – Hôpitaux de Paris
2022-2024
Université Paris Cité
2023-2024
Sorbonne Paris Cité
2024
Institut Necker Enfants Malades
2023
Utrecht University
2004-2020
Centre National de la Recherche Scientifique
2018-2019
Structure et Instabilité des Génomes
2019
University of Veterinary Medicine
2002
A multifactorial approach was attempted to establish the sequence of events that lead parturition in miniature pig. Uterine electrical activity recorded with chronic electrodes implanted uterine muscle correlated concurrent maternal plasma levels progesterone, estrone, estradiol-17β and oxytocin. In 7 sows farrowed at normal term period observation covered last 3 weeks pregnancy up end parturition. During late electromyographs (EMGs) consisted irregular episodes (<3.5/h) prolonged phases...
Summary. Pregnant gilts (3/group) were given no treatment, 10 mg bromocriptine twice daily by mouth, from Day 111 of pregnancy to 1 day post partum, 25 progesterone s.c. at 6-h intervals Days 116 inclusive or 400 indomethacin mouth inclusive. Before spontaneous delivery maternal plasma prolactin and relaxin concentrations started rise almost simultaneously between 57 47 h before the first piglet both hormones reached peak values when concentration had decline rapidly (~21–23 h). Suppression...
An experiment was conducted to study effects of intermittent suckling on creep feed intake and weight gain litters. Loss backfat during lactation, as well reproductive performance, were also measured. Batches multiparous sows (Parity 1 12, 4.1 average) either suckled intermittently (IS, eight batches; n = 50) or continuously (control, 62). Litters weaned at 27 +/- 2 d age, average. Litter size (11.1 0.2 piglets, standardized within a batch 3 birth. All litters had free access water from wk...
An experiment was conducted to determine if the improved creep feed intake observed during intermittent suckling (IS) is important for postweaning performance. Therefore, of litters assessed, and within litters, eaters noneaters were distinguished using chromic oxide as an indigestible marker. Batches sows suckled intermittently (IS, 7 batches; n = 31) or continuously (control, 31). In IS group, separated from sow a period 12 h/d (0930 2130), beginning 11 d before weaning. Litters weaned at...
Summary. The electrophysiological activity of sheep myometrium was recorded by means implantable electrodes and an contact plug. method is described in detail the advantages are discussed. During oestrous cycle, pattern changed considerably. greatest observed at time oestrus. amplitudes were 200 μV or more, rhythmic regular. Most contractions peristaltic. One day later, most propagated opposite direction long pauses occurred from to time. endocrine basis changes myometrial as well their...
The aim of the present study is to investigate effect insulin-like growth factor (IGF-I) on development cultured rat pre-antral follicles. Pre-antral follicles with a diameter between 140 and 160 μm are mechanically isolated from ovaries 10-day-old rats in groups for 6 days FSH insulin-containing serum-free medium absence or presence IGF-I at concentrations 1, 10, 100 ng/ml, respectively. DNA content before after culture measured evaluate whether possible due proliferation follicular cells...
The objective of this study was to determine whether intermittent suckling (IS) combined with an extended lactation can reduce postweaning growth check in pigs. Three weaning regimens [conventional (CW), IS 6-h separation intervals (IS6), and 12-h (IS12)] were compared. In CW (n = 17 litters), litters had continuous access the sow until (d 21, d 0 farrowing). IS6 IS12, separated from for 12 h/d, beginning at 14 lasting 41 45). Litters 1400 2000 0200 0800 (IS6, n 14) or between (IS12, 14)....
The aim of the present study was to investigate effects activin-A and follistatin on in vitro primordial primary follicle development goats. To (experiment 1), pieces ovarian cortex were cultured for 5 days minimal essential medium (MEM) supplemented with (0, 10 or 100 ng/ml), ng/ml) combinations two. After culture, numbers follicles more advanced stages calculated compared those non-cultured tissue. Protein mRNA expression activin-A, follistatin, Kit ligand (KL), growth differentiation...
Between days 27 and 59 after artificial insemination (AI), 189 ultrasonographic pregnancy diagnoses were made in 56 dairy cows using a 7.5 MHz linear‐array rectal transducer. Blood samples withdrawn from jugular vein on the day of Al, 21, each examination between 31, 34 38, 41 45 55 AI. Plasma concentrations bovine pregnancy‐ associated glycoprotein 1 (bPAG‐1) measured by radioimmunoassay. The results showed that before scanning was not very sensitive because six 30 calving incorrectly...
Summary. Uterine electromyography was performed by means of chronically implanted surface electrodes in 3 Pony mares during spontaneous oestrous cycles and following luteolysis induced a prostaglandin analogue (fluprostenol). Three distinct patterns were recognized the cycle. (1) During oestrus well defined phases activity with closely grouped high-amplitude spikes separated long periods (10–45 min) complete inactivity. (2) dioestrus more diffuse low-amplitude variable relative (3)...