Erika Lyon, OSU Extension Educator ANR, Jefferson and Harrison Counties
(Previously published in Farm and Dairy: January 24, 2019)
You may have heard about a new(ish) tick to the U.S. The Centers for Disease Control recently published a news release on the spread of the Asian longhorned tick (Haemaphysalis longicornis), which is now found in eight states: Connecticut, New Jersey, Virginia, West Virginia, Maryland, North Carolina, New York, Pennsylvania, and Arkansas, and it is right next door to Ohio.
Researchers suspect this tick has been in New Jersey since 2013 even though it was first confirmed on sheep in the U.S. over a year ago. Much about this tick is unknown — it is the first new tick found in the U.S. in roughly 80 years. Unfortunately, since this tick has yet to be studied in its new environments, much is unknown about its ability to transmit disease and how well these populations are able to survive the winter.
What we do know is Continue reading
Dr. David G. Pugh, DVM, MS, MAg, DACT, DACVN, DACVM, Auburn University
(Previously published online with the Merck Manual – Veterinary Manual: January, 2014)
Sheep require the major minerals sodium, chlorine, calcium, phosphorus, magnesium, sulfur, potassium, and trace minerals, including cobalt, copper, iodine, iron, manganese, molybdenum, zinc, and selenium. Trace mineralized salt provides an economical way to prevent deficiencies of sodium, chlorine, iodine, manganese, cobalt, copper, iron, and zinc. Selenium should be included in rations, mineral mixtures, or other supplements in deficient areas. Sheep diets usually contain sufficient potassium, iron, magnesium, sulfur, and manganese. Of the trace minerals, iodine, cobalt, and copper status in ewes are best assessed via analysis of liver biopsy tissue. Zinc adequacy can be assessed from the careful collection of nonhemolyzed blood placed in trace element–free collection tubes. Selenium status is easily assessed by collection of whole, preferably heparinized, blood.
In the USA, except on certain alkaline areas of the western range and along the seacoast, sheep should be provided with Continue reading
Brady Campbell, Program Coordinator, OSU Sheep Team
Ohio Sheep Day, a favorite among many sheep producers across the state of Ohio, has been canceled for 2020. Originally scheduled for July 11th and then rescheduled for October 3rd, Ohio Sheep Day was set to provide producers with an updated insight of the work being conducted at the OARDC Sheep Unit in Wooster, Ohio. Among the topics, the introduction of the units newest EID system and grilling 101 highlighting everything lamb were sure to be big hits. However, due to the uncertainty of the COVID-19 pandemic, the planning committee has chosen to cancel the event for this year. As a result, we plan to provide this information to you, our shepherds, at the 2021 Ohio Sheep Day set for July 10th at the same location with the same topics and much more! In the meantime, the OSU Sheep Team plans to provide research and farm video updates of what we have been up to at our research units. Until we are able to see you in person again, happy shepherding!
Christine Gelley, OSU Extension Educator ANR, Noble County
Farming is truly risky business. Every moment of every day on the farm holds inherent risk. The main duties of the farm manager in any sector are to identify, evaluate, and mitigate risk. All the little steps of risk mitigation add up to make a big difference that we can’t always see, but can still save us time, money, and distress in the future.
One of the risks forage managers face on a regular basis is the threat of persistent weeds. Weeds are an issue that compound over time if not addressed soon after detection. Choosing to make the investment in weed prevention and control early can help prevent exponential population growth that is increasingly difficult to manage.
Any plant in the wrong place can be considered a weed, but Continue reading
Dr. David Barker, Professor – Horticulture and Crop Science, The Ohio State University
Dry weather in recent weeks throughout Ohio has raised several questions about how pastures should be managed during drought. Although the experts don’t all agree if this period of dry weather meets the definition of a drought (yet), there is no doubt that pasture growth will slow to zero. How should we be grazing our pastures in mid-summer?
Unfortunately, without rain or irrigation pastures will not grow, and close grazing will exaggerate this effect. Leaf removal by grazing (or mowing) results in a roughly similar proportion of root death. During moist conditions, roots can recover quite quickly, however, grazing during drought will reduce water uptake due to root loss. As a general rule of thumb, grazing below 2 or 3 inches will accelerate drought effects on pastures, and also, slow recovery once rain does come. Of course, optimum grazing height and management varies with Continue reading
Ralph E. Williams, Extension Entomologist, Purdue University
(Previously published online as a white paper with Purdue Extension, Purdue University)
Sheep Keds and Sheep Lice
The sheep ked (Melophagus ovinus), often called the sheep “tick”, is a common pest of sheep. It looks somewhat like a tick but is actually a wingless fly, grayish-brown in color and 1/4 inch long. Its entire life cycle is spent on the host, except when accidentally dislodged; and it will readily crawl from one animal to another.
Sheep keds live 6-8 months, during which time the female produces about 15 young at the rate of approximately one a week. Breeding is continuous, although slower in winter; and there are several generations each year. Unlike most insects, the female gives birth to fullgrown maggots, one at a time, which are attached to wool strands about the neck, inside the thighs and along the belly. Within a few hours after birth, the larval skin turns brown and forms a hard puparium. Fully developed keds Continue reading
Christine Gelley, OSU Extension Educator ANR, Noble County
- “I really need to do something with that junk pasture this year.”
- “The bales off that hayfield are junk. I’m going to reseed it.”
Issues with “junk forage” can include low yields, weed encroachment, and low-quality feed value. Forage growers tend to lament over junk forage two of the four seasons of the year. One is the summer, when their hay equipment is running, their animals are grazing, and the forage is right in front of their eyes. The other is winter, when forage is in short supply, quality issues are leading to low animal productivity, and when pastures look more like mud spas. The time to make progress on correcting the factors that lead to Continue reading
David C. Van Metre, DVM, DACVIM Extension Veterinarian, Colorado State University
(Previously published online with Veterinary Extension through Colorado State University)
Veterinarians are well positioned to become valued participants in sheep flock and goat health programs through introduction of certain practices that have high potential to provide direct economic benefit to the producer. Opportune times for veterinary intervention include evaluation of the breeding flock in the fall prior to breeding, late fall / early winter pregnancy diagnosis, and lambing / kidding during the spring. To optimize the size of the following spring’s lamb or kid crop, the primary goal of the pre-breeding health program should be optimization of fertility through nutritional management and disease control measures, as well as documentation of Continue reading
Rob Cook, Planned Consultation Manager and Pasture and Range Consultant
(Previously published on Noble Research Institute: October 1, 2017)
Grazing land managers who graze multiple livestock species in the same animal groups or on the same acres of land see ecological as well as economic benefits that could improve the sustainability of their operations. Multi-species grazing can be used to more effectively utilize all of the browse and forage in pastures, target weeds and brush, and reduce parasite loads across pastures. These benefits could also lead to increased revenues or decreased costs.
Regardless, using multiple species to capture these benefits is not always sunny days. Including additional species on the ranch will add
(Previously published online with Agriculture Victoria)
Accurate identification of sheep
A Sheep Electronic Identification (EID) system uses an electronic ear tag or device, marking each animal with its own, individual identifying number. There are many potential flock and cost management benefits of EID for producers to utilize on the farm.
The EID tag or device contains a microchip that can be read electronically in a fraction of a second by producers who have a suitable reader (panel or handheld). With electronic reading, transcription errors can be eliminated saving both time and labor in the yards [and barns] whilst increasing the accuracy of your information.
Individual animal management
Within a flock there is a substantial variation in the characteristics that influence an animal’s production level. Identifying and Continue reading