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Calcium and magnesium deficiencies in pregnant and lactating ewes

Clinical calcium deficiency (hypocalcaemia or milk fever) can result in ewe deaths either during the last six weeks of pregnancy or during the first month after lambing. Symptoms include muscle tremors, being unable to rise and subsequent death. Clinical magnesium deficiency (hypomagnesaemia or grass tetany) can result in ewe deaths, typically when ewes are grazing grass-dominant pastures or cereal crops in winter and early spring. Symptoms include staggering, incoordination and sudden death. Hypocalcaemia and hypomagnesaemia can cause ewe mortalities, and lambs from affected ewes will usually die. Lambing difficulty and complications from birth may also be increased, reducing survival.

Articles That Might Interest You

Sheep nutrition over summer and autumn
Dry pastures and stubbles lack energy and protein and hence supplementary feeding is a large component of sheep diets later in summer and autumn. In addition, some vitamins and minerals may be lacking during the dry period. In this article, we cover some of the key nutritional supplements that may be required and animal health issues to keep an eye out for over summer and autumn Read more
Reaping the benefits of pregnancy scanning
With rams now in or soon to go in with the ewes, it’s time to book in your pregnancy scanner or consider pregnancy scanning if this is not yet a practice you’ve adopted. This article dives into the latest economics of pregnancy scanning, including how to optimise the accuracy of scanning and how to turn the investment into profit Read more
Making sense of ASBVs and Selection Indexes
Ram buying is a task that is often only carried out once a year, so it is important that you are making well-informed selection decisions. With this year’s ram selling season now underway, now is a good time to brush up on what you need to think about to get the most out of your selection decisions. Read more
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Resources

Sheep nutrition over summer and autumn Why Western Australian woolgrowers should stay with wool Reaping the benefits of pregnancy scanning Where to start with addressing salty land Driving productivity with EID Making sense of ASBVs and Selection Indexes Best-practice shearing and crutching Preparing for a successful joining Strategies to increase conception and reproductive rates Australian wool production is in the box seat to help livestock industries become part of the climate solution Wool bioharvesting technique aims to provide woolgrowers with choice Increasing your bottom line with agtech Strategies and tactics for the season Raising the bar with lamb survival Feed budgeting 101 What to look out for with stock water quality and some tips to help Passengers vs Performers Making cent$ of carbon and emissions on-farm Wean to manage Agtech wrap: recent agtech developments for woolgrowers

Publications & Other Resources

Tackling Tough Times Webinar – Session 1 Tackling Tough Times Webinar – Session 2 Feed Budget Tables – Green Feed Budget Tables - Break of Season Feed Budget Tables - Dry/Drought Making More From Sheep Condition Scoring of Sheep Shearing Shed Safety Lifetimewool ParaBoss Visual Sheep Scores Pain relief at lamb marking Best-practice lamb marking FeralScan AWI Workshops Information AWI Change Makers Episode 6: Lambing paddock planning AWI Change Makers Episode 2: Weaning to manage Winning With Weaners webinar AWI Change Makers Episode 1: Lambing mob size AWI Change Makers Episode 7: Scanning to manage AWI Change Makers Episode 4: Ewe condition scoring AWI Change Makers Episode 5: Joining time and length AWI Change Makers Episode 3: Ram Performance Management Standard Reference Weight calculator Winning With Weaners feed budget tables Sheep Genetics Understanding MERINOSELECT ASBVs Factsheet Sheep Genetics MERINOSELECT Indexes Factsheet AWI Prepare your sheep for shearing Factsheet AWI Dealing with shearing cuts Factsheet The value of pregnancy scanning Checklist for pregnancy scanning and ewe management from joining to lambing Pregnancy scanning: an ultra-sound investment Resource guide for sheep reproduction Stock water Pregnancy toxaemia fact sheet Hypocalcaemia fact sheet Calcium and magnesium deficiencies in pregnant and lactating ewes Wool harvesting engagement checklist

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