4.1 Article

Participation in Lifetime Ewe Management results in changes in stocking rate, ewe management and reproductive performance on commercial farms

Journal

ANIMAL PRODUCTION SCIENCE
Volume 51, Issue 9, Pages 866-872

Publisher

CSIRO PUBLISHING
DOI: 10.1071/AN10164

Keywords

-

Funding

  1. Australian Wool Innovation Limited
  2. five state Departments of Primary Industries and Agriculture

Ask authors/readers for more resources

Lifetime Ewe Management is an extension program designed to assist sheep producers to improve their understanding of ewe nutrition and to develop the skills and confidence to improve their management. The course is based on a small-group extension model and was developed by the Lifetimewool project as a way to incorporate the research findings, economic modelling and producer guidelines developed by the project. Lifetime Ewe Management commenced in Victoria in the spring of 2006 and by the end of 2010, 221 producers had completed the 2-year program. The changes in knowledge, attitudes, skills, aspirations and management practices of 182 of these participants were examined. Participants of the Lifetime Ewe Management program increased their whole-farm stocking rates by 14%, increased lamb marking percentages by 11-13% depending on enterprise type, and decreased ewe mortality rates by 43%. These improvements resulted from a significant change in the perceived importance of managing ewes to condition-score targets to improve profitability and increases in the ability of participants to condition score ewes, assess pasture quantity and quality and feed budget. These changes were consistent regardless of how innovative the participants were at the beginning of the program. The appeal and success of the program was attributed largely to the small-group model where producers worked with their own flock under the guidance of a skilled facilitator and with access to effective decision-making tools. The Lifetime Ewe Management program design provides a blueprint for future extension programs striving to achieve widespread practice change.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.1
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Agriculture, Multidisciplinary

Factors influencing the optimum mob size of ewes at lambing and the economic benefit of lambing ewes in smaller mobs to increase lamb survival across southern Australia

Amy Lockwood, Jason Trompf, Serina Hancock, Lyndon Kubeil, Andrew Thompson, John Young

AGRICULTURAL SYSTEMS (2020)

Article Agriculture, Dairy & Animal Science

The Number of Offspring Weaned from Ewe Lambs Is Affected Differently by Liveweight and Age at Breeding

Andrew N. Thompson, Elise Bowen, John Keiller, Don Pegler, Gavin Kearney, Cesar A. Rosales-Nieto

Summary: Ewe lambs can reach puberty at 7-10 months old and are more fertile if heavier at breeding. The study found that heavier ewes at breeding have higher weaning rates, with a slight decrease after reaching 45 kg. Age at breeding has a linear effect on weaning rates, increasing by 0.4% per day. Increasing liveweight and age at breeding can improve offspring survival rates.

ANIMALS (2021)

Review Veterinary Sciences

The impact of lamb and ewe mortality associated with dystocia on Australian and New Zealand sheep farms: A systematic review, meta-analysis and bio-economic model

Mieghan Bruce, John M. Young, David G. Masters, Gordon Refshauge, Andrew N. Thompson, Paul R. Kenyon, Ralph Behrendt, Amy Lockwood, David W. Miller, Caroline Jacobson

Summary: Dystocia contributes to significant lamb and ewe mortality in sheep production in Australia and New Zealand. The financial impacts of dystocia on the Australian sheep industry are substantial, and reducing dystocia through improved genetics and management can lead to improved animal welfare and farm profit.

PREVENTIVE VETERINARY MEDICINE (2021)

Article Agriculture, Dairy & Animal Science

Automated feeding of sheep. 2. Feeding behaviour influences the methane emissions of sheep offered restricted diets

S. K. Muir, R. Behrendt, M. Moniruzzaman, G. Kearney, M. Knight

Summary: Research showed that methane emissions in sheep were correlated with daily DMI and time since the last meal. Sheep fed at lower feeding levels tended to produce less methane. The impact of feeding behavior and time since the last meal should be considered in feeding protocols.

ANIMAL PRODUCTION SCIENCE (2022)

Article Agriculture, Dairy & Animal Science

Abortion and Lamb Mortality between Pregnancy Scanning and Lamb Marking for Maiden Ewes in Southern Australia

Thomas Clune, Amy Lockwood, Serina Hancock, Andrew N. Thompson, Sue Beetson, Angus J. D. Campbell, Elsa Glanville, Daniel Brookes, Colin Trengove, Ryan O'Handley, Gavin Kearney, Caroline Jacobson

Summary: This study provides detailed investigation on abortion and lamb mortality in maiden ewes in Australia. The results show variability in abortion rates and lamb mortality rates among maiden ewe flocks, which significantly contribute to overall lamb losses. Addressing abortion issues may improve reproductive performance in maiden ewe flocks.

ANIMALS (2022)

Article Agriculture, Dairy & Animal Science

Lower Reproductive Rate and Lamb Survival Contribute to Lower Lamb Marking Rate in Maiden Ewes Compared to Multiparous Ewes

Dayna Hutchison, Bronwyn E. Clarke, Serina Hancock, Andrew N. Thompson, Elise Bowen, Caroline Jacobson

Summary: The reproductive performance of maiden ewes is poorer than that of multiparous ewes, and the extent and causes of this difference are not well understood in Australian sheep farming. This study compared the reproductive performance of maiden ewes and multiparous ewes on the same farms and found significant differences in lamb marking rate and reproductive success. Strategies to improve reproductive rate and lamb survival can address the suboptimal reproductive performance of maiden ewes.

ANIMALS (2022)

Article Agriculture, Dairy & Animal Science

Interactions between Ewes and Rams during Mating Can Be Used to Predict Lambing Dates Accurately, but Not Sire

Kirsty Cunningham, Andrew Van Burgel, Khama R. Kelman, Claire M. Macleay, Beth L. Paganoni, Andrew N. Thompson

Summary: Early prediction of lambing dates for ewes can improve their management during pregnancy and lambing. Proximity sensors can be used to measure interactions between ewes and rams during mating, successfully predicting conception and lambing dates. This study demonstrates that proximity sensors are an effective means of predicting lambing dates, which can help improve ewe management and lamb survival.

ANIMALS (2022)

Article Agriculture, Dairy & Animal Science

Reproductive Performance of Triplet-Bearing Ewes on Commercial Farms and Research Priorities Identified by Sheep Producers to Improve the Survival of Triplet-Bearing Ewes and Their Lambs

Andrew N. Thompson, Travis Allington, Sarah Blumer, Jo Cameron, Gavin Kearney, Lyndon Kubeil, Amy Lockwood, Jason Trompf, Emma Winslow, Paul Kenyon

Summary: The proportion of triplets among ewes is increasing on sheep farms in Australia due to the use of more fecund genetics and better management practices. A study of sheep producers showed that the mortality rate of triplet-bearing ewes was 6.4%, and the survival rate of triplet-born lambs was 59%. There was variability in the management practices adopted, but no significant differences were found in the mortality rate or lamb survival between different practices. The highest priorities for future research identified by producers were ewe condition score, mob size, feed-on-offer at lambing, and mineral supplementation.

ANIMALS (2023)

Article Veterinary Sciences

Chlamydia pecorum detection in aborted and stillborn lambs from Western Australia

Tom Clune, Shane Besier, Sam Hair, Serina Hancock, Amy Lockwood, Andrew Thompson, Martina Jelocnik, Caroline Jacobson

Summary: This study investigated the causes of perinatal lamb deaths for lambs born to primiparous ewes in Western Australia. The main causes of death were identified as starvation-mismosthering-exposure, dystocia, and stillbirth. Additionally, a pathogenic strain of Chlamydia pecorum (ST23) was detected in aborted and stillborn lambs on multiple farms.

VETERINARY RESEARCH (2021)

Article Veterinary Sciences

Facial action units, activity and time spent with dam are effective measures of pain in response to mulesing of Merino lambs

S. Hancock, L. Inglis, M. Laurence, D. Miller, A. Thompson

Summary: This study showed that facial action units, activity of the lamb, and time spent with the dam can be used to assess pain in Merino lambs following mulesing, but cannot detect any changes associated with pain relief.

AUSTRALIAN VETERINARY JOURNAL (2021)

Article Agriculture, Dairy & Animal Science

Automated feeding of sheep. 1. Changes in feeding behaviour in response to restricted and ad libitum feeding

R. Behrendt, S. K. Muir, M. Moniruzzaman, G. Kearney, M. I. Knight

Summary: The study found that sheep can quickly adapt and respond to changes in daily allowance and offered meal size, but the similar number of non-feeding events at different proportions of maintenance feeding suggest that non-feeding events may not reflect levels of hunger.

ANIMAL PRODUCTION SCIENCE (2021)

Article Agriculture, Dairy & Animal Science

Effect of defoliation on spring-sown winter-type canola (Brassica napus) grain yield, quality and morphology

M. C. Raeside, J. Byron, F. Cameron, C. MacDonald, D. L. Partington, G. A. Kearney, R. Behrendt

Summary: The research found that grazing spring-sown winter-type canola during summer and autumn in southern Australia does not result in a grain-yield penalty, but further grazing or defoliation during winter when bud elongation commences can lead to significant reductions in grain yield.

ANIMAL PRODUCTION SCIENCE (2021)

Article Agriculture, Dairy & Animal Science

The impact of ewe lamb mating and different feeding strategies over summer-autumn on profit and risk: a case study in south-west Victoria

Jonathon Tocker, Ralph Behrendt, Margaret Raeside, Bill Malcolm

Summary: Mating ewe lambs at around 7 months of age is considered a way to increase profits and reduce risks in sheep farms in south-west Victoria, Australia. Utilizing spring-sown canola or lucerne forage for ewe-lamb mating provides the best returns on capital relative to the risks involved.

ANIMAL PRODUCTION SCIENCE (2021)

Article Agriculture, Dairy & Animal Science

Effect of grazing different forage systems prior to and during mating on the liveweight, condition score, conception and reproductive rate of maternal-composite ewe lambs

M. C. Raeside, J. Byron, F. Cameron, C. MacDonald, S. Rochfort, D. L. Partington, G. A. Kearney, R. Behrendt

Summary: The research aimed to determine the impact of grazing summer-active pastures or brassica forages on ewe lamb liveweight, condition score, conception, and reproductive rate during mating compared to a system using perennial ryegrass plus supplement. Results showed that ewe lambs grazing canola or forage brassica had higher liveweight gains during mating compared to those grazing perennial ryegrass, indicating the potential for improved reproductive performance with certain forage options.

ANIMAL PRODUCTION SCIENCE (2021)

Article Agriculture, Dairy & Animal Science

Spring-sown winter-type canola (Brassica napus) as summer-autumn forage for sheep production in southern Australia

M. C. Raeside, J. Byron, F. Cameron, C. MacDonald, D. L. Partington, G. A. Kearney, R. Behrendt

Summary: The research found that spring-sown winter-type canola could provide equal or better levels of herbage mass and nutritive characteristics compared to other forage options in southern Australia's high-rainfall zone. However, its productivity may be limited by variable spring rainfall conditions.

ANIMAL PRODUCTION SCIENCE (2021)

No Data Available