Relationship between progesterone concentrations in milk and blood and time of ovulation in dairy cattle

J.B. Roelofs; F.J.C.M. van Eerdenburg; W. Hazeleger; N.M. Soede; B. Kemp

doi:10.1016/j.anireprosci.2005.04.015

Relationship between progesterone concentrations in milk and blood and time of ovulation in dairy cattle

J.B. Roelofs, F.J.C.M. van Eerdenburg, W. Hazeleger, N.M. Soede, B. Kemp

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

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Abstract

The objective of this study was to investigate whether monitoring progesterone concentrations in milk and blood plasma can be used to predict time of ovulation in dairy cattle. Whole milk was sampled twice daily and blood samples were collected once a day before the morning milking. Ovulation was assessed by trans-rectal ultrasonography at 4 h intervals beginning from the end of estrus. For a parameter to be useful as predictor for time of ovulation, it should be precise (i.e. variation between animals should not exceed 12 h). In milk, progesterone concentration dropped

Original language	English
Pages (from-to)	337-343
Number of pages	7
Journal	Animal Reproduction Science
Volume	91
Issue number	3-4
DOIs	https://doi.org/10.1016/j.anireprosci.2005.04.015
Publication status	Published - 2006

Keywords

ovarian-function
estrus
cows
fertility

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10.1016/j.anireprosci.2005.04.015

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title = "Relationship between progesterone concentrations in milk and blood and time of ovulation in dairy cattle",

abstract = "The objective of this study was to investigate whether monitoring progesterone concentrations in milk and blood plasma can be used to predict time of ovulation in dairy cattle. Whole milk was sampled twice daily and blood samples were collected once a day before the morning milking. Ovulation was assessed by trans-rectal ultrasonography at 4 h intervals beginning from the end of estrus. For a parameter to be useful as predictor for time of ovulation, it should be precise (i.e. variation between animals should not exceed 12 h). In milk, progesterone concentration dropped",

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author = "J.B. Roelofs and {van Eerdenburg}, F.J.C.M. and W. Hazeleger and N.M. Soede and B. Kemp",

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T1 - Relationship between progesterone concentrations in milk and blood and time of ovulation in dairy cattle

AU - Roelofs, J.B.

AU - van Eerdenburg, F.J.C.M.

AU - Hazeleger, W.

AU - Soede, N.M.

AU - Kemp, B.

PY - 2006

Y1 - 2006

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AB - The objective of this study was to investigate whether monitoring progesterone concentrations in milk and blood plasma can be used to predict time of ovulation in dairy cattle. Whole milk was sampled twice daily and blood samples were collected once a day before the morning milking. Ovulation was assessed by trans-rectal ultrasonography at 4 h intervals beginning from the end of estrus. For a parameter to be useful as predictor for time of ovulation, it should be precise (i.e. variation between animals should not exceed 12 h). In milk, progesterone concentration dropped

KW - ovarian-function

KW - estrus

KW - cows

KW - fertility

U2 - 10.1016/j.anireprosci.2005.04.015

DO - 10.1016/j.anireprosci.2005.04.015

M3 - Article

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VL - 91

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EP - 343

JO - Animal Reproduction Science

JF - Animal Reproduction Science

IS - 3-4

ER -

Relationship between progesterone concentrations in milk and blood and time of ovulation in dairy cattle

Abstract

Keywords

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