Elk Delivery

D. E. Larsen, DVM

“Doc, I have a cow elk that has been walking around the pasture in labor for the last couple of hours,” Frank said into the phone. “I can see a small sac of fluid and a foot once in a while, but she is not making any progress.”

“If she has been at it a couple of hours, we probably should get a look at her. Don’t dart her until I get up there.”

Frank had quite a variety of exotic animals. Sika deer, Fallow deer, some antelope, and a small herd of elk. The elk herd consisted of a bull and five or six cows. There were no facilities for handling any of these. We were stuck with using a capture dart.

“What drug do you want me to use,” Frank asked as we were loading the dart.

“She is not too high strung, and with this difficult birth, a dose of Rompun will probably do the trick. We want her to recover pretty quickly so she will take care of the calf.”

“She is not too big,” Frank observed. “What kind of a dose should we use?”

I had provided a dosage chart to Frank so he would not have to do any calculations on dosage. The chart was set up to give the volume dose in milliliters for each weight in fifty-pound steps.

“Let’s give her a five-hundred-pound dose,” I said. “She might be a little over that, but not by much. And we want her to recover quickly.”

Rompun was a tranquilizer approved for the horse and small animals. We routinely used it at very low doses on cows. It was useful for short-term procedures that required chemical restraint. Its shortcoming was animals who were flat out could suddenly recover and react defensively.

We stepped through the gate into the elk pasture. The bull and the other cows moved to the far corner. We could usually lure the herd to the feed rack with a bucket of apples, but this problem cow was by herself away from the others. I could see her getting up, turning around, straining, and lying down again.

She did not seem to be bothered by our approach. When we were within twenty yards, she stood up, and Frank fired the dart gun, striking her in the hip with the loaded dart. We moved away to allow the drug to take effect.

Once she was on the ground and her head turned to her side, we approached cautiously. 

“Let’s get a rope on her just in case she jumps up when I start working on her,” I said. “We don’t want to have to give a second dose.”

Jim, Frank’s hired man, placed the lasso over her head and backed away. Holding the rope with gloved hands just in case she came alive.

I removed the dart from her left hind leg and applied some Betadine to the wound. Then I washed her rear end and carefully explored her birth canal. She had no response. 

I could feel one front foot and then the nose. I reached deeper. The second foot was to be found in the birth canal.

“The calf has a front leg back,” I said. “I should be able to get it up into position easily. There is plenty of room in there. He will pop right out once the position is corrected.”

I reached in and ran my hand past the shoulder on the calf and along its side. I grabbed the cannon bone on the retained leg and pulled it forward. Then I flipped the hoof up into the birth canal.

The cow elk raised her head when I corrected the leg position of the calf. I grabbed the front feet and pulled. The calf quickly slipped out onto the ground. I pulled the calf around toward the cow’s head and stood up.

“Go ahead and remove that rope, Jim,” I said.

As soon as the rope was off, I gave the cow a slap on the butt. She instantly jumped to her feet. 

At the same time, she kicked with a hind leg. The kick was directed with deadly accuracy at me. She walked away, going only a few steps up the hill.

I was lucky that I was just far enough from her that it only brushed my shirt. I had a neat imprint of the toes of her hoof on my shirt just above my navel.

“I think that would have hurt a little if I had been an inch or two closer,” I said.

“I would guess so,” Frank said, with an expression of concern on his face.

“Let’s just move away, quietly, down the hill. Hopefully, she will return and take care of this calf,” I said.

I quickly gathered my stuff into my bucket, and we moved down the hill. Looking back, she was watching both us and the calf. By the time we got to the gate, she was back licking the calf.

“Frank, I think we got a little lucky,” I said as we opened the gate and left the pasture. “You want to write that dose down on your chart. That worked perfectly.”

“I’ll try to remember to do that when I get back to the house,” Frank said. “Is there anything I need to do with her now?”

“I don’t think so,” I said. “She would have probably been coyote food in the wild. There would have been no way for that calf to come out on its own.”

I watched up the hill as I turned my turn to the gate on the end of the lane. Momma elk was over tending to the calf. Things were going to be okay.

From the Archives, one year ago

Donica Lake Trip

https://docsmemoirs.com/2020/03/04/donica-lake-trip/

If It Ain’t Broke, Don’t Fix It

D. E. Larsen, DVM

A group of us younger veterinarians were seated around a table at lunch during the state Veterinary Medical Association meeting when Ed stopped by to visit. Ed was head of the large animal hospital at the new veterinary school that was just getting off the ground at Oregon State University.

After some small talk, Ed asked the group, “I am interested in how many of you guys use or recommend the Pasteurella vaccine in your practice.”

Everyone raised their hand except me.

“Did any of you guys read the article in the last Journal of the AVMA?”

“I read that article the other day,” I said. “I found it very interesting. When I was in school at Colorado State, Dr. Pierson told me to never use that vaccine because it was a terrible vaccine.”

“For those that didn’t read the article,” Ed said. “It is saying that current research shows the vaccine does more harm than good.”

“How is that possible? That vaccine has been used for years,” Scott asked?

“All the research says that the vaccine works by enhancing the white blood cell’s ability to engulf the bacteria,” Ed said. “That allows the bacteria to kill the white blood cell. And the debris from the dead white blood cells causes all the pathology in the dependent lobes of the lungs. They are planning to pull the vaccine.”

“Wow! That is hard to believe,” Scott said.

“Yes, this has been the widest used vaccine in cattle since the late 1940s, maybe the widest used vaccine in the world. For this profession to fail to recognize it as a problem is a major failure. I would be interested in what Dr. Pierson had to say about it, Larsen,” Ed said.

“Dr. Pierson just said it was a terrible vaccine. He did a lot of work in the feedlots in Northern Colorado. I spent a week with him, mostly doing necropsies in several rendering plants in Greeley. He said he would recommend I never use the vaccine. In fact, he recommended I decline to provide services to any herd who used the vaccine.”

“So he was just basing his opinion on his observations,” Ed asked?

“Yes, he was pretty astute. He was also a master with the stethoscope. He could almost draw a picture of the lung field of the steer.”

“Well, this is a good lesson for all of us,” Ed said. “This is why double-blind studies are so important. For almost the entire profession to think they were benefiting cattle by using this vaccine demonstrates that we make ourselves see what we want to see.”

“How are you planning to address the problem at the Veterinary School,” I asked?

“We are definitely going to have to rewrite our vaccination recommendations we hand out to clients. Educationally, it will be a good platform to discuss the placebo effect and how it even affects our ability to really see the results we are getting.”

“Yes, I think that I am losing faith in the way we repair the anterior cruciate tears in the dog,” I said. “I had the opportunity to look at a pair of knees on necropsy. One knee was repaired, and the other was not. On the gross exam, you could tell no difference between the two knees. Talking with the owner, he said that 6 months following the tear of the second ligament, you could not tell any difference in how the dog walked and ran.”

“There are a lot of people working on that problem,” Ed said. “But Larsen, I am interested in how your recommendations differ from everybody else since you don’t use Pasteurella vaccine.”

“I use the viral vaccines, and we practice a closed herd or at least a semi-closed herd approach in the herds that I manage. The only bacterial vaccines I recommend are the Hemophilus and Lepto vaccines.  I rarely see a case of pneumonia in my well-vaccinated herds. Unlike some of the backyard outfits that have pneumonia cases every year.”

“Maintaining a close herd is difficult for most producers,” Scott said.

“Sure, but any replacements are carefully selected, and they try to isolate them for a week or two before introducing them into the herd,” I said. “I don’t have any huge herds, and most of the guys do pretty well.”

“So why just do the viral vaccines,” Scott asked.

“Pasteurella is a normal inhabitant of the respiratory tract,” I said. “It is an opportunistic organism. When the respiratory system is compromised by a viral infection, it becomes susceptible to many bacterial invaders. Throw in stress and environmental factors, and you end up with shipping fever.”

“Well, we are all going to have to work from a different perspective for several years,” Ed said. “I understand that a couple of companies are already starting to work on a new vaccine. But with this experience, the FDA will be very cautious on their approval. I would expect it to take five or six years before we have a replacement.”

“What are you going to do then, Larsen,” Scott asked?

“Five or six years is a long time,” I said. “I guess it will depend on the data. But I firmly believe in the old saying, ‘If it ain’t broke, don’t fix it.’ If my herds continue to have no issues with the way they manage their vaccine programs, it will be hard for me to make a change.”

“I can see your point,” Scott said. “I also find it interesting that you had the chance to work with Dr. Pierson for a week doing necropsies. That kind of experience wasn’t available at Washington State.”

“We had a lot of large feedlots around Fort Collins and Greeley,” I said. “I worked in the Monfort’s feedlot in Greeley, on the weekends for a time. They had a hundred thousand head on feed at that lot and another lot the same size South of Greeley. That was also a great experience for me. But, of course, we don’t have anything close to that in Western Oregon.”

“Well, it has been an interesting discussion,” Ed said. “I’m glad I stopped by to chat.”

“So what is the status of the school,” Scott asked.

“We start our first class this fall,” Ed said. “They will graduate in 1983. It will be a little hard on them. They will take their first year and part of the second year here, then they move to Pullman to take the rest of their second year at WSU. They will take all the small animal medicine during their third year before returning here for their fourth year. Difficult, but at least they will end up with a degree.”

“Sounds difficult,” I said. “I was flat broke when I finished school in Colorado. I am not sure I could have handled all the moving expense, let alone the stress.”

Photo by Dylan Gillis on Unsplash