Does targeted short-term grazing of lucerne increase twinning rates in unsynchronised Merino ewes?

Jessica Rummery, Susan Robertson, Belinda King, Michael Friend

Research output: Other contribution to conferencePoster

Abstract

Reproduction is one of the key profit drivers in the sheep industry and increased reproductive output is needed to address the decline in sheep numbers in Australia to maintain supply to export markets (Curtis 2009). Increased nutrition around mating, or 'flushing', is a well-known means of increasing twinning rates. Studies using synchronisation methods have shown that short-term (acute) supplementation can increase prolificacy if targeted at days 9-14 of the oestrous cycle (Stewart and Oldham 1986). However, synchronisation involves increased chemical and labour costs, so may not suit extensive production systems. This study aimed to test whether an increase in twinning rate was possible using a short-term grazing of lucerne pasture in unsynchronised ewes.
Original languageEnglish
Pages625-626
Number of pages2
Publication statusPublished - 2013
Event22nd International Grasslands Congress - Sydney, Australia
Duration: 15 Sep 201319 Sep 2013
http://www.internationalgrasslands.org/files/igc/publications/2013/proceedings-22nd-igc.pdf (Conference proceedings)

Conference

Conference22nd International Grasslands Congress
Abbreviated titleRevitalising Grasslands to Sustain our Communities
CountryAustralia
CitySydney
Period15/09/1319/09/13
Internet address

Fingerprint

Merino
estrous cycle
profits and margins
alfalfa
ewes
reproductive performance
production technology
labor
pastures
grazing
nutrition
markets
sheep
testing
methodology
sheep industry

Cite this

Rummery, J., Robertson, S., King, B., & Friend, M. (2013). Does targeted short-term grazing of lucerne increase twinning rates in unsynchronised Merino ewes?. 625-626. Poster session presented at 22nd International Grasslands Congress, Sydney, Australia.
Rummery, Jessica ; Robertson, Susan ; King, Belinda ; Friend, Michael. / Does targeted short-term grazing of lucerne increase twinning rates in unsynchronised Merino ewes?. Poster session presented at 22nd International Grasslands Congress, Sydney, Australia.2 p.
@conference{d19a7573b42b4919a13fa0d3470c328e,
title = "Does targeted short-term grazing of lucerne increase twinning rates in unsynchronised Merino ewes?",
abstract = "Reproduction is one of the key profit drivers in the sheep industry and increased reproductive output is needed to address the decline in sheep numbers in Australia to maintain supply to export markets (Curtis 2009). Increased nutrition around mating, or 'flushing', is a well-known means of increasing twinning rates. Studies using synchronisation methods have shown that short-term (acute) supplementation can increase prolificacy if targeted at days 9-14 of the oestrous cycle (Stewart and Oldham 1986). However, synchronisation involves increased chemical and labour costs, so may not suit extensive production systems. This study aimed to test whether an increase in twinning rate was possible using a short-term grazing of lucerne pasture in unsynchronised ewes.",
keywords = "Nutrition, Reproduction, Sheep",
author = "Jessica Rummery and Susan Robertson and Belinda King and Michael Friend",
note = "Imported on 03 May 2017 - DigiTool details were: 086 FoR could not be migrated (TBA - TBA). publisher = Orange: NSW Department of Primary Industries, 2013. editor/s (773b) = David L Michalk, Geoffrey D Millar, Warwick B Badgery and Kim M Broadfoot; Event dates (773o) = 15-19 September 2013; Parent title (773t) = International Grasslands Congress.; 22nd International Grasslands Congress, Revitalising Grasslands to Sustain our Communities ; Conference date: 15-09-2013 Through 19-09-2013",
year = "2013",
language = "English",
pages = "625--626",
url = "http://www.internationalgrasslands.org/files/igc/publications/2013/proceedings-22nd-igc.pdf",

}

Rummery, J, Robertson, S, King, B & Friend, M 2013, 'Does targeted short-term grazing of lucerne increase twinning rates in unsynchronised Merino ewes?' 22nd International Grasslands Congress, Sydney, Australia, 15/09/13 - 19/09/13, pp. 625-626.

Does targeted short-term grazing of lucerne increase twinning rates in unsynchronised Merino ewes? / Rummery, Jessica; Robertson, Susan; King, Belinda; Friend, Michael.

2013. 625-626 Poster session presented at 22nd International Grasslands Congress, Sydney, Australia.

Research output: Other contribution to conferencePoster

TY - CONF

T1 - Does targeted short-term grazing of lucerne increase twinning rates in unsynchronised Merino ewes?

AU - Rummery, Jessica

AU - Robertson, Susan

AU - King, Belinda

AU - Friend, Michael

N1 - Imported on 03 May 2017 - DigiTool details were: 086 FoR could not be migrated (TBA - TBA). publisher = Orange: NSW Department of Primary Industries, 2013. editor/s (773b) = David L Michalk, Geoffrey D Millar, Warwick B Badgery and Kim M Broadfoot; Event dates (773o) = 15-19 September 2013; Parent title (773t) = International Grasslands Congress.

PY - 2013

Y1 - 2013

N2 - Reproduction is one of the key profit drivers in the sheep industry and increased reproductive output is needed to address the decline in sheep numbers in Australia to maintain supply to export markets (Curtis 2009). Increased nutrition around mating, or 'flushing', is a well-known means of increasing twinning rates. Studies using synchronisation methods have shown that short-term (acute) supplementation can increase prolificacy if targeted at days 9-14 of the oestrous cycle (Stewart and Oldham 1986). However, synchronisation involves increased chemical and labour costs, so may not suit extensive production systems. This study aimed to test whether an increase in twinning rate was possible using a short-term grazing of lucerne pasture in unsynchronised ewes.

AB - Reproduction is one of the key profit drivers in the sheep industry and increased reproductive output is needed to address the decline in sheep numbers in Australia to maintain supply to export markets (Curtis 2009). Increased nutrition around mating, or 'flushing', is a well-known means of increasing twinning rates. Studies using synchronisation methods have shown that short-term (acute) supplementation can increase prolificacy if targeted at days 9-14 of the oestrous cycle (Stewart and Oldham 1986). However, synchronisation involves increased chemical and labour costs, so may not suit extensive production systems. This study aimed to test whether an increase in twinning rate was possible using a short-term grazing of lucerne pasture in unsynchronised ewes.

KW - Nutrition

KW - Reproduction

KW - Sheep

UR - http://www.internationalgrasslands.org/files/igc/publications/2013/proceedings-22nd-igc.pdf

M3 - Poster

SP - 625

EP - 626

ER -

Rummery J, Robertson S, King B, Friend M. Does targeted short-term grazing of lucerne increase twinning rates in unsynchronised Merino ewes?. 2013. Poster session presented at 22nd International Grasslands Congress, Sydney, Australia.