Variation in LH pulsatility during 24 h after a postweaning altrenogest treatment in relation to follicle development in primiparous sows

J.J.J. van Leeuwen; M.R.T.M. Martens; J. Jourquin; M.A. Draincourt; B. Kemp; N.M. Soede

doi:10.1016/j.anireprosci.2011.04.015

Variation in LH pulsatility during 24 h after a postweaning altrenogest treatment in relation to follicle development in primiparous sows

J.J.J. van Leeuwen, M.R.T.M. Martens, J. Jourquin, M.A. Draincourt, B. Kemp, N.M. Soede

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

This study assessed pulsatile release of LH during altrenogest treatment after weaning in primiparous sows and related this to follicle development, estrus and ovulation rate. Weaned sows (n = 10) received altrenogest 20 mg/day from D-1 to D13 (weaning = D0) at 0800 h. On D13, blood samples were collected every 12 min from 1000 until 1900 h (1st sampling period) and from 2300 h until 0800 h (2nd sampling period). During the 1st sampling period, LH concentrations remained low and no LH pulses were detected in 8/10 sows. During the 2nd sampling period, average and basal LH concentrations (P <0.04) and frequency of pulses (P <0.0001) were higher than during the 1st sampling period. Sows with short vs. long intervals to estrus (

Original language	English
Pages (from-to)	101-107
Journal	Animal Reproduction Science
Volume	126
Issue number	1-2
DOIs	https://doi.org/10.1016/j.anireprosci.2011.04.015
Publication status	Published - 2011

Keywords

luteinizing-hormone
allyl trenbolone
ovarian-function
lactating sows
ovulation rate
luteal-phase
protein loss
litter size
estrus
gilts

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10.1016/j.anireprosci.2011.04.015

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@article{f9536662087c47cc9e7f1e9d98bdfe11,

title = "Variation in LH pulsatility during 24 h after a postweaning altrenogest treatment in relation to follicle development in primiparous sows",

abstract = "This study assessed pulsatile release of LH during altrenogest treatment after weaning in primiparous sows and related this to follicle development, estrus and ovulation rate. Weaned sows (n = 10) received altrenogest 20 mg/day from D-1 to D13 (weaning = D0) at 0800 h. On D13, blood samples were collected every 12 min from 1000 until 1900 h (1st sampling period) and from 2300 h until 0800 h (2nd sampling period). During the 1st sampling period, LH concentrations remained low and no LH pulses were detected in 8/10 sows. During the 2nd sampling period, average and basal LH concentrations (P <0.04) and frequency of pulses (P <0.0001) were higher than during the 1st sampling period. Sows with short vs. long intervals to estrus (",

keywords = "luteinizing-hormone, allyl trenbolone, ovarian-function, lactating sows, ovulation rate, luteal-phase, protein loss, litter size, estrus, gilts",

author = "{van Leeuwen}, J.J.J. and M.R.T.M. Martens and J. Jourquin and M.A. Draincourt and B. Kemp and N.M. Soede",

year = "2011",

doi = "10.1016/j.anireprosci.2011.04.015",

language = "English",

volume = "126",

pages = "101--107",

journal = "Animal Reproduction Science",

issn = "0378-4320",

publisher = "Elsevier",

number = "1-2",

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T1 - Variation in LH pulsatility during 24 h after a postweaning altrenogest treatment in relation to follicle development in primiparous sows

AU - van Leeuwen, J.J.J.

AU - Martens, M.R.T.M.

AU - Jourquin, J.

AU - Draincourt, M.A.

AU - Kemp, B.

AU - Soede, N.M.

PY - 2011

Y1 - 2011

N2 - This study assessed pulsatile release of LH during altrenogest treatment after weaning in primiparous sows and related this to follicle development, estrus and ovulation rate. Weaned sows (n = 10) received altrenogest 20 mg/day from D-1 to D13 (weaning = D0) at 0800 h. On D13, blood samples were collected every 12 min from 1000 until 1900 h (1st sampling period) and from 2300 h until 0800 h (2nd sampling period). During the 1st sampling period, LH concentrations remained low and no LH pulses were detected in 8/10 sows. During the 2nd sampling period, average and basal LH concentrations (P <0.04) and frequency of pulses (P <0.0001) were higher than during the 1st sampling period. Sows with short vs. long intervals to estrus (

AB - This study assessed pulsatile release of LH during altrenogest treatment after weaning in primiparous sows and related this to follicle development, estrus and ovulation rate. Weaned sows (n = 10) received altrenogest 20 mg/day from D-1 to D13 (weaning = D0) at 0800 h. On D13, blood samples were collected every 12 min from 1000 until 1900 h (1st sampling period) and from 2300 h until 0800 h (2nd sampling period). During the 1st sampling period, LH concentrations remained low and no LH pulses were detected in 8/10 sows. During the 2nd sampling period, average and basal LH concentrations (P <0.04) and frequency of pulses (P <0.0001) were higher than during the 1st sampling period. Sows with short vs. long intervals to estrus (

KW - luteinizing-hormone

KW - allyl trenbolone

KW - ovarian-function

KW - lactating sows

KW - ovulation rate

KW - luteal-phase

KW - protein loss

KW - litter size

KW - estrus

KW - gilts

U2 - 10.1016/j.anireprosci.2011.04.015

DO - 10.1016/j.anireprosci.2011.04.015

M3 - Article

SN - 0378-4320

VL - 126

SP - 101

EP - 107

JO - Animal Reproduction Science

JF - Animal Reproduction Science

IS - 1-2

ER -

Variation in LH pulsatility during 24 h after a postweaning altrenogest treatment in relation to follicle development in primiparous sows

Abstract

Keywords

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