Postpartum Flashcards
Puerperium
Between parturition and first estrus;period of repro repare
UT: restores to non-pregnancy state
OVARIES: prepare for ovulation
Puerperium/UT
Myo contractions: OT(suckling) -expels fluid/debri(lochia) -reduce uterine size Endometrial repair:Ruminants -caruncle necrosis/repair Elimination of bacteria
Puerperium: ovulation/estrus
-suspended during lactation
Due to suckling or milking:
Cows: inhibiting GnRH, LH release/ first ovulation is silent
Pigs: stimulating PRL which decrease FSH/LH
Prenatal mammogenesis
Mammary ridge—>primary mammary bud—>secondary mammary bud—>canalization
Lactation
Milk production/secretion by mammary gland
Highly concentrated
Provides nourishment for survival/antibodies
Alveoli
Milk secretion units
Cuboidal/columnar: milk synthesis
Myo cells: expel milk from alveoli into ducts during milk ejection reflex
Transport system of mammary glands
Ducts
Gland cistern: ruminants
Mammogenesis
Mammary development
Es/P4/PRL/GH
Lactogenesis
Initiation of lactation by PRL
Inhibited by P4/bromocryptine
PRL/insulin/glucocorticoids
Lactopoesis:
Milk secretion/maintenance of lactation
GH/glucose/thyroid/insulin/PRL
Bromocryptine
Dopamine agonist
B—>dopamine—>PRL inhibition
Milk ejection reflex
Neuro-endocrine event:
Stimulation
Increases OT release from PP
OT triggers myo cells to contract—>ejection
Colostrum
2x higher protein
Antibodies not digested by GI tract
Milk
Fat 4%
Protein:casein
Sugar:lactose
Lactocrine hypothesis
Biologically active factors present in colostrum are delivered to nursing offspring where they can affect developmental neonatal tissues
