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Samenvatting - voortplanting
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volledige samenvatting uit 2022 in Vives Roeselare
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Elyse Pauwels Voortplanting 2023-2024Voortplanting
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1. Vrouwelijke VP.........................................................................................................................................3
Zoogdieren...............................................................................................................................................3
Vogels.......................................................................................................................................................4
Reptielen..................................................................................................................................................5
2. Mannelijke VP...........................................................................................................................................5
Zoogdieren...............................................................................................................................................5
Vogels.......................................................................................................................................................7
Reptielen..................................................................................................................................................7
3. Prenatale ontwikkeling.............................................................................................................................8
Zoogdieren...............................................................................................................................................8
Vogels.....................................................................................................................................................10
Reptielen................................................................................................................................................10
4. Functie geslachtshormonen...................................................................................................................11
Regulatie.................................................................................................................................................11
Zenuwstelsel...........................................................................................................................................13
Farmaca..................................................................................................................................................14
5. Puberteit.................................................................................................................................................15
Definitie:.................................................................................................................................................15
Verandering in hersenen:.......................................................................................................................15
Vogels: start van puberteit:....................................................................................................................16
Reptielen: start van puberteit:...............................................................................................................16
6. Cyclus......................................................................................................................................................17
7. Spermatogenese en natuurlijke dekking................................................................................................22
Dekking:..................................................................................................................................................23
Sperma-Afname, onderzoek en bewaring:.............................................................................................24
KI:...........................................................................................................................................................25
Vogels:....................................................................................................................................................25
Reptielen:...............................................................................................................................................26
8. Dracht.....................................................................................................................................................26
Bevruchting en vroege embryonale ontwikkeling..................................................................................26
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,Elyse Pauwels Voortplanting 2023-2024
Maternale herkenning dracht.................................................................................................................26
Implantatie en ontwikkeling placenta....................................................................................................27
Drachtduur.............................................................................................................................................28
Drachtdiagnose.......................................................................................................................................28
Zorg moederdier tijdens dracht..............................................................................................................29
Moderne voortplantingstechnieken.......................................................................................................30
9. Partus.....................................................................................................................................................31
Op gang komen partus...........................................................................................................................31
Algemeen verloop..................................................................................................................................31
Merrie:....................................................................................................................................................32
Teef:.......................................................................................................................................................32
Complicaties...........................................................................................................................................33
Keizersnede hond...................................................................................................................................34
10. Neonatale periode................................................................................................................................34
Moederdier............................................................................................................................................34
Neonaat/neonaten.................................................................................................................................35
Handopfok..............................................................................................................................................35
Spenen....................................................................................................................................................36
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,Elyse Pauwels Voortplanting 2023-2024
1. Vrouwelijke VP
Zoogdieren
- Basisstructuur:
o Buisvormig
o Laag 1: serrosa
o Laag 2: muscularis
o Laag 3: submucosa
o Laag 4: mucosa
- Ligging:
o Hangt in buikholte aan ligament
Mesovarium (ovarium ligt hangt hier) sterilisaite = mesovarium afknellen
Mesoalpix (eileiders hangen hier)
Mesometrium (uterus hang hier) complicatie partus merrie = bloeding hier
o Ontwikkeling foetus = organen hangen boven buikvlies blijft groeien tot buikvlies rond
o Ventraal rectum, dorsaal blaas
- Ovaria: “eierstokken”
o Productie oocyten (eicellen) = vast aantal bij geboorte
o Productie hormonen (oestrogeen en progesteron)
o Dense, ovaalvormige structuur
Medulla (kern): BV, lymfevaten en zenuwen
Cortex (rand): oocyten
Uitzondering merrie: oocyten in medulla en bv in cortex
Oocyt zal altijd uit 1 groef uitspringen bij ovulatie
Paard(achtigen), negenbandig gordeldier en wezelcavia
- Oviduct: “eileiders”
o “salpinx”
o Verbinding ovarium en uterus
o 3 delen:
Infundibulum: (trechtervormige uiteinde)
Oocyt opvangen (zal groter en breder worden bij ovulatie)
Ampulla: plaats waar bevruchting plaats vindt
Spierlagen zullen tegengesteld van elkaar bewegen sperma naar
oocyt duwen
Istmus: sperma reservoir (behalve hond)
Eerste celdeling na bevruchting tot in uterus komt (goed milieu)
Sperma overleeft hier paar dagen
Hond: reservoir in uterus
Uterotubale juntie: overgang oviduct naar uterus
Menselijke chirurgies sterilisatie: stukje oviduct weghalen
- Uterus: “BM”
o 2 hoornen versmelten hangt af van diersoort
o Duplex: 2 baarmoeder hoornen en 2 cervixen met 1 baarmoeder kanaal
Konijnen en buideldieren
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, Elyse Pauwels Voortplanting 2023-2024
o Bicornis: 2 hoornen met 1 cervix (corpus)
Varken, kat, hond paard korte hoorns met lange corpus
o Unicornis: 2 hoornen volledig versmolten (corpus)
Primaten en mensen
o Lagen:
Perinetrium
Myometrium (spierlagen)
Endometrium (klieren) sperma reservoir hond
o Functie:
Transport sperma
Omgeving groei pre-implantatie embryo en verdere groei foetus na aanhechting
Vormen maternale placenta
Expulsie foetus en placenta
Hormoonproductie: prostaglandineF2 alfa (luteolyse = afbraak corpus lutheum)
- Cervix: “BM-hals”
o Verbinding uterus en vagina
o Anatomie = diersoortafhankelijk
o Nauwe doorgang (lumen = cervicaal kanaal)
Partus = ontspannen en openen
o Honden en katten hebben 1 plooi, andere hebben meerdere plooien
Varken = afwisselend penis is schroevendraaivormig
o Mucus:
Smerend (bronst), visceus (barrière tijdens dracht)
- Vagina:
o Copulatieorgaan, Uitmonding urethra
o Passief geboortekanaal (kan niet helpen tijdens partus)
o Blindzak = kleine uitloping achter cervix (koe, merrie en teef)
o Epitheel reageert op progesteron en oestrogeen = veranderingen bronst
- Vulva: Uitwendige 2 labia (dorsale en ventrale versmelting) en clitoris (homoloog penis)
Vogels
- Ovarium:
o Rechterkant = rudimentair
o Craniaal bij linker nier
o Inactieve periode = follikels zelfde grote
o Actieve periode = follikels verschillende grote (dooier)
Ovulatie: dooier en eicel komt vrij
Nieuwe ovulatie halfuur na voorgaande eileg (geen corpus lutheum)
- Oviduct:
o Ongv. 24u traject
o 3 lagen oviduct
Buiten: bindweefsel (bescherming)
Midden: spierlaag (beweging)
Binnnen: klieren (secretie)
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