It All Starts in the Rumen

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As prey animals, sheep evolved with the ability to harvest their food quickly with very little chewing, then retire to a safe place to further process their meal. Sheep are unable to directly digest the cellulose in forages and must rely on billions of microorganisms in the rumen (bacteria, protozoa and fungi) for fermentation and digestion. The byproducts of these microbes provide the sheep with needed nutrients (protein, energy, B vitamins and vitamin K). The health of the entire animal is reliant on the health of the rumen microbes. The rumen is often referred to as a large fermentation vat…

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Late Gestation Management Considerations

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Ewes are bred, the holidays are just around the corner, and for all of us with winter lambing flocks, lambing season is almost here. Over the last year, we have invested in high quality genetics to move our flocks forward and now it's important that we make sure our next generation of lambs gets off to the right start. This begins with good late gestation management. I have summarized nutritional requirements in Table 1 (think of this as nutrient demand by the animal). Requirements for energy (as indicated by total digestible nutrients) and protein increase substantially for late gestation and…

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Alternative Feeds: Is Variety the Spice of Life?

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When it comes to sheep feed…it depends. With staggering increases in feed costs due to inflation, supply chain disruptions, impacts of international conflicts affecting energy, grain and fertilizer production along with regional weather events, now might be a good time to investigate alternative feeds. Alternative feeds are those that are not commonly used on a regular basis as part of the usual livestock feed ration and are often cheaper than typical feed, such as corn and soybeans. Availability and cost of certain alternative feeds will vary based on geographic region so it pays to do some research on what might…

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Small Farm Hay Considerations

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For a small producer, identifying a hay farmer that suits your needs each and every year can be an invaluable asset to your farm. Building and nurturing that relationship may mean you have access to hay during unforeseen events, such as drought or shortage. Creating that relationship gives you an understanding of what you are buying. It allows you to become actively involved in the production of your animal's diet for a good portion of the year. The benefit to your hay farmer is simply knowing that you are coming back every year. It's easier to produce a product for…

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Managing Feed Costs in a Time of Expensive Inputs

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As we enter the fall and look ahead to winter feeding months, hay prices continue to climb. With feed accounting for more than 50% of production costs, managing these expenses is critical to remaining profitable in current times. Two strategies for decreasing feed costs are: 1) extending the grazing season to reduce hay feeding; and 2) making smart hay purchasing decisions to get the most out of your investment. The grazing season can be extended with improved forage management. With cattle, the Amazing Grazing team at NCSU has coined the term "POW - The Power of One Wire." Unfortunately, many…

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Small Flock Pasture Management

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At weaning time, you will need your best pastures in tip top shape for your lambs to continue growing. Your free input resource must be managed throughout the late spring and summer. This can be challenging with limited equipment and modest grazing space. Rotational grazing techniques are helpful and can be complimented with proactive management. Early in the warmer seasons, cool season grasses and forbs are dominant and provide great forage. As the temperatures climb, the availability of palatable grasses and plants decline. Grasses can go to seed too quickly to graze your animals on them. Rain followed by hot daytime temperatures cause the grasses…

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Small Flock Weaning Considerations

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Weaning lambs on a small farm can be a challenging endeavor. Being limited on space and supplies, such as electric fencing, means careful planning must take place to manage the two groups separately. There are various ways to wean lambs off of their dams. The approach you choose may vary from year to year depending on the mix of ewe and ram lambs per dam, the ages of the lambs, changes in the size of the flock, available resources and even the weather.  Some folks choose to fence line wean by dividing the groups with fencing (preferably permanent) and moving…

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Udder Health in Ewes: Mastitis, Udder Scores and Management

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Ewes only have two teats and hopefully raise at least twin lambs, so maintaining healthy udders and culling ewes with udder problems is important to minimize lamb losses and bottle lambs while ensuring optimal growth of lambs on your farm. Mastitis leads to lower weaning weights in lambs of affected dams, takes time and money for treatment, as well as slowing down genetic progress due to forced culling of ewes. Rates of mastitis are variable across different farms. It is important to keep track of the percentage of ewes that get mastitis each year or are culled for lumpy udders…

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Pregnancy Diagnosis

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There are various options for diagnosing pregnancy in sheep. The cost/benefit analysis for doing this procedure depends on what you are going to do with the information. Your reasons for doing pregnancy diagnosis will also dictate which method you want to employ. In general, the earlier in pregnancy the diagnosis is made, the larger the risk of false positive results due to early embryonic loss. If avoiding false positive pregnancy diagnosis is essential to your production, it might be better to postpone diagnostic testing so ewes are closer to 60 days pregnant before testing. Available diagnostic tests: Blood tests: Pregnancy…

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Polio in Sheep: A Medical Emergency

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Polioencephalomalacia (PEM or Polio) is a common disease in sheep. Unlike the human form of Polio, it is not a viral infection, but a neurological disease characterized by brain swelling that, if left untreated, progresses to degeneration of brain tissue due to pressure necrosis. Early treatment is critical to lamb survival. A deficiency in thiamine (vitamin B1) is the most common cause of Polio and is usually induced by a disruption in normal rumen function, especially acidosis. Thiamine plays a key role in glucose metabolism and proper brain function. Since thiamine is produced from rumen microbes, lambs at greatest risk…

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