Interrelationships of nutrition, metabolic hormones and resumption of ovulation in multiparous suckled beef cows on subtropical pastures

F. Samadi; N. J. Phillips; D. Blache; G. B. Martin; M. J. D'Occhio

doi:10.1016/j.anireprosci.2012.12.012

Interrelationships of nutrition, metabolic hormones and resumption of ovulation in multiparous suckled beef cows on subtropical pastures

F. Samadi, N. J. Phillips, D. Blache, G. B. Martin, M. J. D'Occhio^*

^*Corresponding author for this work

Department of Electrical & Electronic Engineering

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

21 Citations (Scopus)

Abstract

The effect of nutrition before and after calving on metabolic status and the resumption of ovulation postpartum was examined in multiparous sucked beef cows on subtropical pastures. At 6-7 months of gestation, Droughtmaster cows were randomly assigned on body weight (BW) and stage of gestation to two groups that received either standard subtropical pasture (SP, n=7,543 +/- 12 kg BW) or improved pasture (IP, n=7,564 +/- 12 kg BW). The two nutritional treatments were maintained after calving. Starting at 1 week after calving, cows were monitored for BW and body condition score (BCS, biweekly) and for circulating concentrations of insulin, glucose, IGF-1, GH and leptin (weekly). Ovarian follicular status was monitored weekly by trans-rectal ultrasonography. Fecal samples were obtained at 3-week intervals to ascertain percentage crude protein (%CP) and dry matter digestibility (DMD) of pastures. Crude protein and DMD were greater (P

Original language	English
Pages (from-to)	137-144
Number of pages	8
Journal	Animal Reproduction Science
Volume	137
Issue number	3-4
DOIs	https://doi.org/10.1016/j.anireprosci.2012.12.012
Publication status	Published - Mar 2013

Structured keywords

WUN

Keywords

Postpartum
Nutrition
Metabolic hormones
Ovulation
Beef cow
GROWTH-FACTOR-I
DIETARY ENERGY RESTRICTION
BODY CONDITION SCORE
DAIRY-COWS
REPRODUCTIVE-PERFORMANCE
FOLLICULAR DEVELOPMENT
LUTEINIZING-HORMONE
POSTPARTUM ANESTRUS
BOVINE GRANULOSA
FATTY-ACIDS

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10.1016/j.anireprosci.2012.12.012

2 Finished

Global Farm Platforms for Optimisation of Grazing Livestock Production Systems
Eisler, M. C., Miller, H., Greathead, H., Martin, G., Liu, J., Lee, M. R., Goddard, E., van Saun, R. & Jahn, M.
1/01/14 → 31/12/15
Project: Research
Ensuring Sustainable and Responsible Production of Healthy Food from Healthy Animals
Eisler, M. C., Miller, H., Sankaran, M., Greathead, H., Martin, G., Liu, J., Ramkumar, S. & Murray, P.
1/01/13 → 31/12/13
Project: Research

Cite this

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title = "Interrelationships of nutrition, metabolic hormones and resumption of ovulation in multiparous suckled beef cows on subtropical pastures",

abstract = "The effect of nutrition before and after calving on metabolic status and the resumption of ovulation postpartum was examined in multiparous sucked beef cows on subtropical pastures. At 6-7 months of gestation, Droughtmaster cows were randomly assigned on body weight (BW) and stage of gestation to two groups that received either standard subtropical pasture (SP, n=7,543 +/- 12 kg BW) or improved pasture (IP, n=7,564 +/- 12 kg BW). The two nutritional treatments were maintained after calving. Starting at 1 week after calving, cows were monitored for BW and body condition score (BCS, biweekly) and for circulating concentrations of insulin, glucose, IGF-1, GH and leptin (weekly). Ovarian follicular status was monitored weekly by trans-rectal ultrasonography. Fecal samples were obtained at 3-week intervals to ascertain percentage crude protein (%CP) and dry matter digestibility (DMD) of pastures. Crude protein and DMD were greater (P",

keywords = "Postpartum, Nutrition, Metabolic hormones, Ovulation, Beef cow, GROWTH-FACTOR-I, DIETARY ENERGY RESTRICTION, BODY CONDITION SCORE, DAIRY-COWS, REPRODUCTIVE-PERFORMANCE, FOLLICULAR DEVELOPMENT, LUTEINIZING-HORMONE, POSTPARTUM ANESTRUS, BOVINE GRANULOSA, FATTY-ACIDS",

author = "F. Samadi and Phillips, {N. J.} and D. Blache and Martin, {G. B.} and D'Occhio, {M. J.}",

year = "2013",

month = mar,

doi = "10.1016/j.anireprosci.2012.12.012",

language = "English",

volume = "137",

pages = "137--144",

journal = "Animal Reproduction Science",

issn = "0378-4320",

publisher = "Elsevier",

number = "3-4",

}

Interrelationships of nutrition, metabolic hormones and resumption of ovulation in multiparous suckled beef cows on subtropical pastures. / Samadi, F.; Phillips, N. J.; Blache, D.; Martin, G. B.; D'Occhio, M. J.

In: Animal Reproduction Science, Vol. 137, No. 3-4, 03.2013, p. 137-144.

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

TY - JOUR

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AU - Samadi, F.

AU - Phillips, N. J.

AU - Blache, D.

AU - Martin, G. B.

AU - D'Occhio, M. J.

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N2 - The effect of nutrition before and after calving on metabolic status and the resumption of ovulation postpartum was examined in multiparous sucked beef cows on subtropical pastures. At 6-7 months of gestation, Droughtmaster cows were randomly assigned on body weight (BW) and stage of gestation to two groups that received either standard subtropical pasture (SP, n=7,543 +/- 12 kg BW) or improved pasture (IP, n=7,564 +/- 12 kg BW). The two nutritional treatments were maintained after calving. Starting at 1 week after calving, cows were monitored for BW and body condition score (BCS, biweekly) and for circulating concentrations of insulin, glucose, IGF-1, GH and leptin (weekly). Ovarian follicular status was monitored weekly by trans-rectal ultrasonography. Fecal samples were obtained at 3-week intervals to ascertain percentage crude protein (%CP) and dry matter digestibility (DMD) of pastures. Crude protein and DMD were greater (P

AB - The effect of nutrition before and after calving on metabolic status and the resumption of ovulation postpartum was examined in multiparous sucked beef cows on subtropical pastures. At 6-7 months of gestation, Droughtmaster cows were randomly assigned on body weight (BW) and stage of gestation to two groups that received either standard subtropical pasture (SP, n=7,543 +/- 12 kg BW) or improved pasture (IP, n=7,564 +/- 12 kg BW). The two nutritional treatments were maintained after calving. Starting at 1 week after calving, cows were monitored for BW and body condition score (BCS, biweekly) and for circulating concentrations of insulin, glucose, IGF-1, GH and leptin (weekly). Ovarian follicular status was monitored weekly by trans-rectal ultrasonography. Fecal samples were obtained at 3-week intervals to ascertain percentage crude protein (%CP) and dry matter digestibility (DMD) of pastures. Crude protein and DMD were greater (P

KW - Postpartum

KW - Nutrition

KW - Metabolic hormones

KW - Ovulation

KW - Beef cow

KW - GROWTH-FACTOR-I

KW - DIETARY ENERGY RESTRICTION

KW - BODY CONDITION SCORE

KW - DAIRY-COWS

KW - REPRODUCTIVE-PERFORMANCE

KW - FOLLICULAR DEVELOPMENT

KW - LUTEINIZING-HORMONE

KW - POSTPARTUM ANESTRUS

KW - BOVINE GRANULOSA

KW - FATTY-ACIDS

U2 - 10.1016/j.anireprosci.2012.12.012

DO - 10.1016/j.anireprosci.2012.12.012

M3 - Article (Academic Journal)

C2 - 23352421

VL - 137

SP - 137

EP - 144

JO - Animal Reproduction Science

JF - Animal Reproduction Science

SN - 0378-4320

IS - 3-4

ER -

Interrelationships of nutrition, metabolic hormones and resumption of ovulation in multiparous suckled beef cows on subtropical pastures

Abstract

Structured keywords

Keywords

Access to Document

Global Farm Platforms for Optimisation of Grazing Livestock Production Systems

Ensuring Sustainable and Responsible Production of Healthy Food from Healthy Animals

Cite this