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Created on : 12 Nov 2004
Modified on : 23 Nov 2018

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Bibliographical entry (without author) :

Physiological regulation of maternal behavior in heifers: Roles of genital stimulation, intracerebral oxytocin release, and ovarian steroids. BIOLOGY OF REPRODUCTION 65 (1), p. 295-300 JUL

Author(s) :

Williams GL, Gazal OS, Leshin LS, Stanko RL, Anderson LL

Year of publication :


URL(s) :…

Résumé (français)  :

Etude, chez les génisses, de l’effet sur le lien mère-enfant (1) de l’analgésie péridurale et (2) de l’injection d’estradiol [visant à stimuler la production endogène d’ocytocine] , d’une stimulation génitale et autres stimuli. Chez les génisses primipares, la péridurale empêche la production [centrale et périphérique] d’ocytocine, et réduit sensiblement les réflexes de léchage des veaux pendant 3 heures après leur naissance.

Les déficits sensoriels dans la zone pelvienne empêchent la production d’ocytocine et perturbent les comportements maternels à court et long terme, mais ils n’entraînent pas de rejet du veau.

Abstract (English)  :

We tested the hypotheses that 1) epidural anesthesia at parturition would block both peripheral and central release of oxytocin and eliminate the development of maternal behavior in primiparous heifers and 2) estradiol priming, genital stimulation, and appropriate neonatal stimuli would induce maternal behavior in nulliparous heifers.

In experiment 1, primiparous crossbred heifers (n = 13) with cannulas in the third cerebroventricle (IIIV) were assigned randomly to receive epidural treatments of saline (SAL; n = 6) or lidocaine HCl (EPI; n = 7) at the onset of labor induced between Days 270 and 280 of gestation. Epidural anesthesia blocked (P < 0.001) both central and peripheral release of oxytocin and markedly reduced (P < 0.05) or eliminated licking behaviors during a 3-h period following parturition as compared with SAL.

Following approximately 1 wk of controlled daily suckling, during which calves were permitted access only to the inguinal region of their dams (three times daily for 10 min each time), a second maternal behavior test was performed. Although licking behavior remained markedly reduced (P < 0.001) in the EPI compared with the SAL groups, all heifers accepted their calf at the udder.

In experiments 2-4, neither estradiol priming in ovariectomized heifers nor estradiol plus progesterone in intact heifers resulted in an induction of maternal behaviors following genital stimulation and presentation of a neonate wetted with amniotic fluid. Pelvic sensory deficits apparently block oxytocin release and disturb both short-latency and long-term maternal behaviors but do not result ultimately in rejection of the calf. Combinations of hormonal, sensory, olfactory, and visual cues observed previously to induce maternal behavior in nulliparous ewes do not appear adequate for induction of maternal behavior in nulliparous heifers.

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Argument (français) :

Etude, chez les génisses, de l’effet sur le lien mère-enfant (1) de l’analgésie péridurale et (2) de l’injection d’estradiol [visant à stimuler la production endogène d’ocytocine] , d’une stimulation génitale et autres stimuli

Argument (English):

Study in heifers of the effect on the mother-child link (1) of epidural analgesia and (2) of estradiol injection [aimed at stimulating endogenous production of oxytocin] , genital stimulation and other stimuli

Argumento (português):

Estudo em novilhas do efeito na ligação mãe-filho (1) da analgesia epidural e (2) da injeção de estradiol [visando estimular a produção endógena de ocitocina] , estimulação genital e outros estímulos

Keywords :

➡ induction of labor ; post-term pregnancy ; hormones ; oxytocin ; epidural

Author of this record :

Sandrine Péneau — 12 Nov 2004
➡ latest update : Bernard Bel — 23 Nov 2018

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