Postpartum Flashcards
(18 cards)
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
Asynchronous concurrent lactation
Colostrum comp changes depending on the demands of the growing joey
Milk fever
Paresis
80% cases day 1 lactation
Infuse calcium
Avoid by feeding cows a low Ca diet during dry period
Natural defenses against mastitis
Teat canal: sphincter muscle/keratin
Somatic: macrophage/neutrophils
