Farm & Ranch
Supper at Grand Island

By Ralph Chain
Funny things happen in a person’s lifetime. One of the funny things that I can remember happened several years ago.
We were hauling grain and hay out of Nebraska because it was so dry here in Oklahoma. I had a friend named Gene Bloomer, who owned a ranch north of Griever Canyon in Major County. He had a bunch of steers and thought the market might be better at Grand Island, Neb., than it was in Oklahoma, because they had plenty of feed in that area.
He thought if he had a way of getting those steers to Grand Island to the sale barn that they would probably bring him more money. He approached me and asked, “Would you guys want to haul those steers to Grand Island, Neb.?” We had three trucks, and I said, “We could probably haul them for you.”
We had a hand named Iman Widner, who had worked for us a long time ago, and a kid named Gene Anson. They were great guys but never traveled much. Anson had worked for us all of his life, and Widner had been here a long time. They were not used to going to high-priced restaurants and eating. They ate bologna sandwiches usually, or hamburgers if they went into a restaurant. You did not go to restaurants too often then.
I told Gene that we would haul his cattle to Grand Island for him. We loaded them about 4 a.m. north of Griever Canyon in our three trucks. It took us all day to get to Grand Island, and it was late evening when finally, we unloaded the cattle.
Nothing would do, Gene Bloomer wanted to take us out for supper, along with his wife. He did not give us time to clean up or anything, and he told us where to meet him. He was in his Cadillac and had his suit and tie on, and his wife was all dressed up. He said, “I’ll meet you at the so-and-so hotel at a certain time,” which wasn’t very long.
We unloaded the cattle, got into one of the trucks and went downtown Grand Island and found the hotel. We went in, and it was a plush place. I do not know why in the world he ever went in to that hotel with us guys looking like we did. We had cow manure all over us, and we smelled just like a cow. We had our cowboy hats and boots on.
We went into the hotel and he had a table set up for us. He and his wife, who were sitting at the table, motioned to us. There weren’t a lot of people in the dining room. There were linens on the table and nice silverware. I remember when we walked in, there were two older ladies sitting there. They turned around and looked at us (they could smell us, too) and they got up and moved over to another table farther away when we came in and sat down. One of them had an eye piece on, I’ll always remember that. They were really well dressed.
It was sort of a French restaurant or Italian. The menu was different, I could hardly read it. I knew what was going to happen because Anson and Widner weren’t going to be able to read it at all. The very first thing the waitress did was came over to Widner and said, “What will you have, sir?” He began to squirm and kept looking at this menu, and I got tickled. I had my menu in front of my face. He began to shuffle his feet and squirm in his chair. He cleared his throat and kept looking at the menu and said, “Do you have hamburger steak?” She said, “Yes, we can fix you a hamburger steak.” She then asked, “What kind of salad dressing would you like, sir?” He cleared his throat because he didn’t know what she was talking about.
“We have Thousand Island, French, and we have House,” she said. He said, “Oh, I think France.” Then she asked, “Would you like hash browns or candied yams?” He was used to fried potatoes or sweet potatoes. He said, “Oh, I guess I’ll just take some hash.” He didn’t know what she was talking about. Then she asked, “Sir, would you like tomato juice or barley soup?” He said, (after clearing his throat) “I guess I’ll have the garlic soup.” He thought she had said garlic soup. I was just about to bust.
She came up to Anson’s side and asked, “What will you have, sir?” Gene cleared his throat, shuffled his feet, and looked at the menu and said, “Hell, I don’t know. Just bring me something to eat.” I had just taken a big drink of water, and I just busted out and spewed water over the table.
Farm & Ranch
Cattle Nematodes (Worms)

Barry Whitworth, DVM | Senior Extension Specialist | Department of Animal & Food Sciences
According to the Mesonet, Oklahoma received some much-needed rain in late April (2023). With the moderate temperatures and high humidity, the environment is perfect for the proliferation of gastrointestinal nematodes (GIN) which are commonly called “worms.” Cattle can be infected with a variety of GIN. Most do not cause issues unless husbandry practices are poor. However certain GIN have been associated with disease. The most pathological GIN in cattle is Ostertagia ostertagi. Cooperia species and Haemonchus species are two that have been implicated with production issues. Control of these parasites is constantly changing due to environment, anthelmintic (dewormer) resistance, and consumer preference. Cattle producers should develop a plan to manage these parasites.
In order for GIN to complete their life cycle, certain environmental conditions must exist. The development stage begins with passing of the egg in the feces of the animal. If the egg is to hatch, the temperature must be warm and the humidity needs to be close to 100%. Ideal temperature ranges from 70⁰ to 80⁰ Fahrenheit (F), but any temperature above 45⁰ F will allow for development. Temperatures above 85⁰ F or below 45⁰ F will begin to hamper development. Humidity needs to be 80% or higher.
Once the egg hatches, the larva goes through a couple of molts to reach the infective stage which is the third stage larva (L3). L3 must have moisture to free itself from the fecal pat. Once free, it rides a wave of water on to a blade of forage. Once ingested, this begins the prepatent or pre-adult stage. Two molts take place during this stage (L3 to L4 and L4 to L5). If conditions are not favorable for survivability of offspring, L4 will go into an arrested development stage (hypobiosis) for a period of time. The patent or adult stage is the mature breeding adult.
Once inside the body, the parasite will migrate to certain locations in the digestive tract. For example, O. ostertagi develop in the gastric gland in the abomasum. H. placei and H. contortus will migrate to the abomasum. Cooperia species will live in the small intestine. A few like Trichuris (whipworms) are found in the large intestine.
Clinical signs of parasitism vary according to the species of parasite, burden, and site of attachment. Severe disease, which is referred to as parasitic gastroenteritis (PGE), with internal parasites is unusual with today’s control methods. Clinical signs of PGE are lack of appetite, weight loss, weakness, diarrhea, submandibular edema (bottle jaw), and death. However, most parasite infection are subclinical which means producers do not see clinical signs of disease. In subclinical infections, the parasite causes production issues such as poor weight gain in young cattle, reduced milk production, and lower pregnancy rates.
Producers should be monitoring their herds for parasites throughout the year but especially in the spring when conditions are ideal for infection. A fecal egg count (FEC) is a good way of accessing parasite burdens. Livestock producers need to gather fecal samples from their herd periodically. The samples should be sent to their veterinarian or a veterinary diagnostic lab. Different techniques are used to access the number of eggs per gram of feces. Based on the counts, the producer will learn the parasite burden of the herd. Producers can use this information to develop a treatment plan.
In the past, GIN control was simple. Cattle were routinely dewormed. Unfortunately, anthelmintic resistance has complicated parasite control. Now proper nutrition, grazing management, a general understanding of how weather influences parasites, biosecurity, refugia, anthelmintic efficiency, and the judicious use of anthelmintics are important in designing an effective parasite management program. All of these considerations need to be discussed in detail with a producer’s veterinarian when developing a plan for their operation.
Cattle producers need to understand that parasites cannot be eliminated. They must be managed with a variety of control methods. Designing a parasite management plan requires producers to gain a general understanding of life cycle of the parasite as well as the environmental needs of the parasite. Producers should use this information as well as consult with their veterinarian for a plan to manage GIN. For more information about GIN, producers should talk with their veterinarian and/or with their local Oklahoma State University Cooperative Extension Agriculture Educator.
References
Charlier, J., Höglund, J., Morgan, E. R., Geldhof, P., Vercruysse, J., & Claerebout, E. (2020). Biology and Epidemiology of Gastrointestinal Nematodes in Cattle. The Veterinary clinics of North America. Food animal practice, 36(1), 1–15.
Navarre C. B. (2020). Epidemiology and Control of Gastrointestinal Nematodes of Cattle in Southern Climates. The Veterinary clinics of North America. Food animal practice, 36(1), 45–57.
Urquhart, G. M., Armour, J., Duncan, J. L., Dunn, A. M., & Jennings, F. W. (1987). In G. M. Urquhart (Ed). Veterinary Helminthology. Veterinary Parasitology (1st ed., pp 3-33). Longman Scientific & Technical.
Farm & Ranch
The Value of Vitamin A

Barry Whitworth, DVM – Area Food/Animal Quality and Health – Specialist for Eastern Oklahoma
A ranch in Australia experienced an abnormally high number of stillbirths and weak born calves in 2004-2005. An investigation revealed that the usual infectious causes were not the problem. After additional testing, veterinarians diagnosed low levels of vitamin A as the cause.
According to Dr. Greg Hanzlicek, with the Kansas State Veterinary Diagnostic Laboratory (KSVDL), Kansas had an unusually high number of stillbirth cases and weak born calves in the spring of 2019. After many laboratory tests, it was concluded that the problem stimmed from a lack of energy, protein, Vitamin A, or combinations of all of these.
Both of the above examples demonstrate the importance of vitamin A in reproductive efficiency. Research has shown that low vitamin A levels during pregnancy are associated with abortions, stillbirths, and weak born calves. In addition to playing an important role in reproductive efficiency, vitamin A is essential for vision, bone growth, and maintaining epithelial tissue such as skin and hooves.
Animals obtain vitamin A from consuming green forage and/or the addition of vitamin A supplements to the diet. Lush green pastures contain high amounts of vitamin A. As plants mature and during times of drought, the amount of vitamin A decreases. The ranch in Australia experienced below average rainfall in the previous two years prior to the calving season. During the calving season, rainfall was below average with very dry conditions and little green forage was available.
In general, animals obtain adequate amounts of vitamin A by grazing green forage. Animals grazing green pastures will build a healthy store of vitamin A in the liver. When vitamin A is in short supply, the stores in the liver prevent deficiencies. According to Dr. Lalman, Extension Beef Cattle Specialist Oklahoma State University, the stores should last 2 to 4 months during times of deficiency. During times when green forage is not available, vitamin A supplements need to be added to the diet to prevent deficiencies.
When vitamin A levels are deficient, night blindness is one of the earliest clinical signs. Other eye issues include clouding of the cornea, ocular discharges, and possible ulcerations. Skin issues found when levels of vitamin A are deficient include a dry rough coat, scales on the skin, and dry cracked hooves. Other neurological signs include incoordination or gait problems. Seizures may occur due to the increase cerebrospinal fluid pressure. Birth defects have also been attributed to low vitamin A levels.
Animals displaying vitamin A deficiency should be treated immediately with vitamin A injections. If treated early, response is usually rapid and complete. However, delaying treatment may result in irreversible damage. Even with treatment, cattle with vision impairment due to vitamin A deficiency may not regain their sight.
Preventing Vitamin A deficiency depends on producers being attentive to the environmental conditions that favor low vitamin A levels in forage. During these times, producers need to supplement the diet with vitamin A. Producers need to be aware that Vitamin A supplements degrade rapidly, so vitamin A supplements should not be stored for long periods of time. In addition to vitamin A supplementation, research indicates that diets low in protein result in poor absorption of vitamin A. It is important that producers ensure that the rations have sufficient protein levels. Lastly, since colostrum contains high levels of vitamin A, producers need to ensure that newborns obtain adequate amounts of colostrum at birth.
Similar to the Australian example, most of Oklahoma had below average rainfall for the year of 2022. This resulted in pasture quality decreasing earlier than normal. Due to this year’s lack of green forage, liver stores of vitamin A may be inadequate for the animal’s needs. Producers need to ensure that the diets of their cattle have adequate amounts of vitamin A, energy, and protein. For more information about Vitamin A, producers should contact their veterinarian and/or visit with their Oklahoma State University County Ag Educator.
References
Hanzlicek, G. (2019, May). Difficult Calving Season Findings:2019. Diagnostic Insights. www.ksudl.org/resources/news/diagnostic_insights/may2019/difficult-calving-season2019.html.
Hill, B., Holroyd, R., & Sullivan, M. (2009). Clinical and pathological findings associated with congenital hypovitaminosis A in extensively grazed beef cattle. Australian Veterinary Journal, 87(3), 94–98.
Parker, E. M., Gardiner, C. P., Kessell, A. E., & Parker, A. J. (2017). Hypovitaminosis A in extensively grazed beef cattle. Australian veterinary journal, 95(3), 80–84.
Farm & Ranch
Lice in Cattle

Barry Whitworth, DVM, MPH | Senior Extension Specialist
Department of Animal & Food Sciences | Freguson College of Agriculture | Oklahoma State University
Cattle lice cost Oklahoma cattlemen millions of dollars each year in decreased weight gains and reduced milk production. If cattle producers have not treated their cattle for lice this fall, they need to consider what type of lice control to initiate. This is especially true for cattle producers that had problems in the previous year. Cattle producers should monitor cattle closely during the months of December, January, and February. Producers should not wait until clinical signs appear before beginning treatment.
The life cycle of the different species of cattle lice are very similar. The life cycle begins with the female louse attaching her egg to a shaft of hair. The egg will hatch as a small replica of the adult. After several molts, the adult will emerge. The cycle takes around 3 to 4 weeks to complete. These newly hatched lice will spend their entire life on the host and are host specific which means cattle cannot be infected with lice from other animals.
Small numbers of lice may be found on cattle in the summer, but high populations of lice are associated with cold weather. Since cattle tend to be in closer proximity to each other in the winter, lice can spread easily between cattle. A small percentage of cattle tend to harbor larger numbers of lice. These animals are sometimes referred to as “carrier animals”, and they may be a source for maintaining lice in the herd. As with many other diseases, stress also contributes to susceptibility and infestation.
Signs of lice infections in cattle are hair loss, unthrifty cattle, and hair on fences or other objects. If producers find these signs, they may want to check a few animals for lice. They can check for lice by parting the hair and observing the number of lice per square inch. If an animal has 1 to 5 lice per square inch, they are considered to have a low infestation. Cattle with 6 to 10 lice would be considered moderately infested. Any cattle with more than 10 lice per square inch are heavily infested.
Cattle have two types of lice. One type is the biting or chewing louse. These lice have mouth parts that are adapted to bite and chew the skin. The second type is sucking louse. These lice have mouth parts that will penetrate the skin and suck blood and other tissue fluids. It is not uncommon for cattle to be infested with more than one species of lice.
The biting or chewing louse is Bovicola (Domalinia) bovis. This type of lice feeds on hair, skin, skin exudate, and debris. Typical clinical signs with this type of louse are hair loss, skin irritation and scabs on the skin. They are found on the shoulders and back.
Four types of sucking lice can be found in the United States. The first is the “short nose” louse or Haematopinus eurysternus. This is the largest cattle louse. This louse is found on the neck, back, dewlap, and base of the tail. The second is the “long-nose” louse or Linognathus vituli. This louse is bluish in color with a long slender head. This louse is found on the dewlap, shoulders, sides of the neck, and rump. The third is the “little blue” louse or Solenoptes cappilatus. This louse is blue in color and is the smallest cattle louse. This louse is found on the dewlap, muzzle, eyes, and neck. The last is the “tail” louse or Haematopinus quadripertuses. This louse has been found in California, Florida, and other Gulf Coast States. This louse is found around the tail.
The sucking lice have the potential to cause severe anemia if the numbers are high. This can result in poor doing cattle or in extreme cases death. They also can spread infectious diseases. The long-nose louse has been found to be a mechanical vector for anaplasmosis.
Prevention of lice infestation should begin in the fall. Producers should not wait for clinical signs to appear before beginning treatment. Several products are available to control lice. Producers should read and follow the label directions. Producers should keep in mind that many of the lice control products require two administrations to control lice. Failure to do this may result in cattle having problems with lice infestations.
Some producers have complained that some products do not work. These complaints have not been verified; however, this is a good reason to consult with a veterinarian for advice on what products to use. Most treatment failures are associated with incorrect application not resistance. Proper application of Pour-On insecticides is to administer from the withers to the tailhead. Also, the proper dose is essential for good control.
Cattle producers need to consider a few other things in lice control. Since cattle in poor body condition are more prone to lice infestation, producers need to be sure that the nutritional needs of their cattle are being met. Cattle that have a history of lice infestations should be culled. Lastly, any purchased cattle need to be inspected for lice before entering the herd. If lice are found, the animals should be isolated and treated before entering the herd.
If producers would like more information on lice in cattle, they should contact their local veterinarian or Oklahoma State University County Extension Agriculture Educator. They may also want to read Oklahoma Cooperative Extension Fact Sheet Beef Ectoparasites VTMD-7000 at https://extension.okstate.edu/fact-sheets/beef-cattle-ectoparasites.html.
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