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Screwworm is here...

41,396 Views | 308 Replies | Last: 4 hrs ago by Centerpole90
FishrCoAg
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Deerdude said:

BlueSmoke said:

Deerdude said:

Right or wrong I've put Safe-Guard licks in feeder pens. Do it every year before fawning starts. It's Fenbendazole. Makes me feel better anyway and the deer hammer it.

Isn't that more for intestinal worms?


Yea but it's a parasitic lick. Best I can do.


It does nothing to control screwworms or any other external parasites
Deerdude
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Yea I know that i put it out every late spring and Maybe not anything proven except that I'm trying something that I do every year anyway and it won't hurt anything. If it were found to save a deer then I win. If not, no sweat.
About 60 years ago sterile flies were a crazy idea.
Old RV Ag
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FishrCoAg said:

Deerdude said:

BlueSmoke said:

Deerdude said:

Right or wrong I've put Safe-Guard licks in feeder pens. Do it every year before fawning starts. It's Fenbendazole. Makes me feel better anyway and the deer hammer it.

Isn't that more for intestinal worms?


Yea but it's a parasitic lick. Best I can do.


It does nothing to control screwworms or any other external parasites

But, it makes those people feelz good - something that is not only aligned with certain "demographic people." Deerdude (or whatever your handle is, I do commend you for wanting to be proactive) Thanks for your response previously saying they are taking my comments as too harsh. I don't blame hobby farmers and bait hunters. I only pointed out these were not so prevalent as the previous outbreak. And I stated bluntly that I hoped that I was wrong that these conditions would make it harder this time around. We've got very large stockpiles of known mediations for controlling scewworm only because I knew this was coming. But, in reality only the sterile fly program is a known/given solution. Too bad we are far behind where we should be.

FishrCoAg - take care of that wonderful lady. You are a blessed man and also in a professional manner, Texas is lucky to have you as a superb Vet so important in a critical area!
FishrCoAg
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Thanks for the kind words. This is going to be a struggle and I hope to see people and groups pulling in the same direction and not depending on things that do nothing. None of us want to see our industries decimated

Is there any way I can contact you? I have a question I would like to ask.
Old RV Ag
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FishrCoAg said:

Thanks for the kind words. This is going to be a struggle and I hope to see people and groups pulling in the same direction and not depending on things that do nothing. None of us want to see our industries decimated

Is there any way I can contact you? I have a question I would like to ask.

Agree. I'm amazed still how the younger generation is so sensitive (yeah, I'm showing my age and crusty side (which is all sides)). I'm not against hobby farms and deer hunters. Just pointing out these are different and they need to be involved and not thinking their actions don't impact the broader community.

I bought a star so now I think you can message me.

good gosh, the updated autocorrects correct my typing to even more than my typical dementia gibberish!
RCR06
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When I hear people talking about NWS it is either this will have a significant effect or this is no big deal. Not much inbetween.
SanAntonio
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Been a quiet week on the new case front...
Deerdude
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Sneaky bastages…
AnScAggie
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SanAntonio said:

Been a quiet week on the new case front...

Yes it has, and believe it or not that has me more worried. I'm on record saying I don't think this will be anything at all like the 60's, and I still feel that way. What I am concerned about is if you can believe the screwworm flight data that's out there, that they may feel they have gotten a head of it which I just don't believe. I am still confused that we have had 12 cases reported and still have yet to catch a wild fly in the traps, that makes no sense to me.
Monkeypox
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Agreed.
hillcountryag86
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SanAntonio said:

Been a quiet week on the new case front...


I hope it is an accurate reflection. That there aren't any, or many, new cases.

I hope it is not because people are not reporting.

With NWS, the gov't is a friend.
SanAntoneAg
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House Committee on Ag & Livestock live stream:

https://house.texas.gov/videos

Deerdude
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Hope there's experts like Crockett and Al Green on this committee.
Buck Compton
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hillcountryag86 said:

SanAntonio said:

Been a quiet week on the new case front...


I hope it is an accurate reflection. That there aren't any, or many, new cases.

I hope it is not because people are not reporting.

With NWS, the gov't is a friend.
I would unfortunately lean towards the lack of reporting/recording…

I know someone who thought they had a case after finding 3 goats randomly dead one morning (alive the previous day) with open wounds, flies, maggots, and what looked like screwworm. He called and reported it, state/fed vet (someone) told them that "it probably isn't screwworm since you didn't see the maggots when they were alive". No more testing was done.
ttha_aggie_09
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SanAntoneAg said:

House Committee on Ag & Livestock live stream:

https://house.texas.gov/videos



I listened to a little bit while eating lunch and before my next call. That part I got was the bombardment of questions towards the L&E dude (I presume) about ivermectin in protein/corn, similar to the tick program. Sounds like the concentration in that application is much lower than what would be needed for NWS. It also sounds like considerations for min. dosing, regardless of the range conditions, are considered for feeding to wild deer.

Also sounds like mobile, onsite sterile fly facilities can be given a green light for like $4MM a piece. There is apparently another existing facility in South Texas (I think - didn't catch the exact location) that can be up and running and producing 90 million sterile flies (not sure on what frequency - I missed that part) within 9-12 months.

A bunch of criticism from a representative on why they were talking about this 18 months ago and still talking about it now. "Why are we always reactive and not proactive?". I think that was an excellent point and feel his frustration.

There was also a guy from M3 Ag technologies on the panel and he didn't really talk a whole lot when I listened. Just mentioned that they're the ones, I think, that are facilitating the sterilization, capture, release of NWS flies.

That was all I got and remember off the top of my head. I'll try and grab the notes to review later and plan on comparing notes with a few folks in Uvalde this weekend.
Centerpole90
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Quote:

There is apparently another existing facility in South Texas (I think - didn't catch the exact location) that can be up and running and producing 90 million sterile flies (not sure on what frequency - I missed that part) within 9-12 months.

This sounds like Moore Field in Edinburg - the quantity and timeline (late 2027) line up. That is where the flies they are dropping now are being brought to and dispersed from. It was a production facility in previous outbreak - and the site of the one under construction today.
SanAntoneAg
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TPWD reports they have investigated 1,668 potential wildlife cases, including WTD, skunks, vultures, etc. Of these, 19 were highly suspect. To date, no confirmed wildlife cases. They are stressing observation, especially through trail cameras during summer months, and reporting.
txags92
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SanAntoneAg said:

TPWD reports they have investigated 1,668 potential wildlife cases, including WTD, skunks, vultures, etc. Of these, 19 were highly suspect. To date, no confirmed wildlife cases. They are stressing observation, especially through trail cameras during summer months, and reporting.

Mine was one of those. After watching more carefully for a week or so and watching a lot of videos of the deer, I am pretty sure the black spot on its shoulder is a Cutaneous Fibroma. It is definitely an outward growth and not a wound cavity that is open or scabbed over flat.
RanchAg
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M3 is saying they can do it with x-ray but they haven't tested on NWS. He was providing other examples of insects they have had success with and thinks it will work on NWS. University of Florida is working with feds on testing x-ray and TAMU is working on using Ebeam because neither requires radioactive material. Both universities have been to Panama but haven't confirmed correct dosage to ensure complete sterilization of pupae.

Ivermectin in feed is being tested by TAMU at two locations. Difference between NWS and fever tick is that the tick feeds on blood and NWS feeds on tissue. They are still trying to determine correct dosage for medicated feeds to have an effect in tissue. The other thing to note is medicated feed is pulled 60 days prior to bow season in the fever tick program, so typically early August. This could help during fawning and velvet shed but not during rut if a warm winter.
txags92
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Last thing you want is an inadequate dose in the feed not killing the maggots and helping them build tolerance instead.
ttha_aggie_09
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txags92 said:

Last thing you want is an inadequate dose in the feed not killing the maggots and helping them build tolerance instead.
One of the points they brought up was that ivermectin was recently removed from any restrictions - at least for personal consumption. The concern is people may start mixing and medicating feed (corn or protein) for wildlife at inadequate doses and create problems like NWS that are potentially immune.

I need to see if I can grab the transcript… it was interesting to hear the parts I listened to.

I am still mad we all knew this was coming but doesn't feel like we prepared at all for it. I guess that is par for the course for government…
RanchAg
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It will be interesting to see how things shake out. I'm not sure that ivermectin is going to have the impact people think it will. It is definitely a tool that can be used, but USDA has been feeding it for over a decade to combat the fever tick and we still have issues with that pest.

It is very difficult to control consumption in wildlife, especially with the rain we received this year and there being so many other choices to browse. Factor in the social aspects of animals and I think you will see some over consume and others not consume enough.

Finally, what was proposed this afternoon was a prescriptive approach, not mass feeding of medicated corn/feed across the state. Ivomec is approved in livestock as a preventative but not a cure once NWS is found, and that is as an injectable. They are using dectomax as a preventative and treatment. Their models will need to be accurate for any medicated feed to have a positive impact.
ttha_aggie_09
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Yep, great points!
FishrCoAg
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RanchAg said:

It will be interesting to see how things shake out. I'm not sure that ivermectin is going to have the impact people think it will. It is definitely a tool that can be used, but USDA has been feeding it for over a decade to combat the fever tick and we still have issues with that pest.

It is very difficult to control consumption in wildlife, especially with the rain we received this year and there being so many other choices to browse. Factor in the social aspects of animals and I think you will see some over consume and others not consume enough.

Finally, what was proposed this afternoon was a prescriptive approach, not mass feeding of medicated corn/feed across the state. Ivomec is approved in livestock as a preventative but not a cure once NWS is found, and that is as an injectable. They are using dectomax as a preventative and treatment. Their models will need to be accurate for any medicated feed to have a positive impact.


I read a report from Costa Rica, where they have been dealing with it for years, saying that NWS was pretty resistant to ivermectin now. Can't vouch for the accuracy but it is concerning.
jagsdad
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Tecolote said:

jagsdad said:

FishrCoAg said:

Deerdude said:

I don't know anybody running several thousand head by themselves or with one partner.
Heck, my tightwad cousin is running 400 pairs and has a dozen hands helping.


Big ranches out here do have multiple hands, but not enough to gather really big pastures without hiring day help. Doing it monthly would be expensive, the alternative of checking those pastures multiple times a week is also daunting. That's just one of the reasons we need to nip this thing in the bud quickly

Not nearly as expensive as losing cattle.

Not in Texas but a neighbor state. Yes, ideally doing the checking multiple times a week or more realistically a month is better than losing cattle. But, trying to find thousands of head in our neck of the woods in canyons, brush, trees, etc. spread over 10k, 20k, 30k, acres, etc. just isn't feasible with the manpower (or lack thereof). add in the wildlife and you've got a nightmare.

I understand that. Hunt west Tx, so I kinda know your predicament. All you can do is the best you can, and hope they decide to spread the sterile flies in your area as a preventative, I guess. Prayers for you guys. Liable to be lots of days in the saddle coming up.
country
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ttha_aggie_09 said:

txags92 said:

Last thing you want is an inadequate dose in the feed not killing the maggots and helping them build tolerance instead.
One of the points they brought up was that ivermectin was recently removed from any restrictions - at least for personal consumption. The concern is people may start mixing and medicating feed (corn or protein) for wildlife at inadequate doses and create problems like NWS that are potentially immune.

I need to see if I can grab the transcript… it was interesting to hear the parts I listened to.

I am still mad we all knew this was coming but doesn't feel like we prepared at all for it. I guess that is par for the course for government…

I am just about as anti-government as it gets and I agree with you on par for the course. But I want to stress that par for the course is related to the politicians not listening to the boots on the ground government workers in this instance. The guys and gals in the local field offices have been yelling from the rooftops to get things moving. That is why I say in this instance cooperate with those folks. They are the ones that can centralize the fight against NWS with what resources are available and that resource list will grow as politicians figure out how big of f ups they are. The local field offices are here to fight the problem with us. Not nit picking at your post at all, I just wanted to, once again, stress that cooperation is an absolute must.
Tecolote
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FishrCoAg said:

RanchAg said:

It will be interesting to see how things shake out. I'm not sure that ivermectin is going to have the impact people think it will. It is definitely a tool that can be used, but USDA has been feeding it for over a decade to combat the fever tick and we still have issues with that pest.

It is very difficult to control consumption in wildlife, especially with the rain we received this year and there being so many other choices to browse. Factor in the social aspects of animals and I think you will see some over consume and others not consume enough.

Finally, what was proposed this afternoon was a prescriptive approach, not mass feeding of medicated corn/feed across the state. Ivomec is approved in livestock as a preventative but not a cure once NWS is found, and that is as an injectable. They are using dectomax as a preventative and treatment. Their models will need to be accurate for any medicated feed to have a positive impact.


I read a report from Costa Rica, where they have been dealing with it for years, saying that NWS was pretty resistant to ivermectin now. Can't vouch for the accuracy but it is concerning.

Just left a meeting with state vet (not Texas). This was stated by the vet as being thought to be the case and they are concerned with people thinking ivermectin is the cure all and using it inappropriately, thus enhancing even more the resistance by NWS. Medicated feeds were very worrisome to the vet as too many variables.
CrossTimbersW
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Tecolote said:

FishrCoAg said:

RanchAg said:

It will be interesting to see how things shake out. I'm not sure that ivermectin is going to have the impact people think it will. It is definitely a tool that can be used, but USDA has been feeding it for over a decade to combat the fever tick and we still have issues with that pest.

It is very difficult to control consumption in wildlife, especially with the rain we received this year and there being so many other choices to browse. Factor in the social aspects of animals and I think you will see some over consume and others not consume enough.

Finally, what was proposed this afternoon was a prescriptive approach, not mass feeding of medicated corn/feed across the state. Ivomec is approved in livestock as a preventative but not a cure once NWS is found, and that is as an injectable. They are using dectomax as a preventative and treatment. Their models will need to be accurate for any medicated feed to have a positive impact.


I read a report from Costa Rica, where they have been dealing with it for years, saying that NWS was pretty resistant to ivermectin now. Can't vouch for the accuracy but it is concerning.

Just left a meeting with state vet (not Texas). This was stated by the vet as being thought to be the case and they are concerned with people thinking ivermectin is the cure all and using it inappropriately, thus enhancing even more the resistance by NWS. Medicated feeds were very worrisome to the vet as too many variables.


I understand this and I also don't think I disagree with it but another question that it raises to me is why not throw the kitchen sink at the fly while we're waiting on increased production of sterile flies? I would think even if the fly does build immunity to ivermectin, eventually we will have enough sterile fly production that it no longer matters if they're resistant or not. I haven't came to a conclusion on my end yet but it seems that building resistance to ivermectin won't be a real issue down the road. I would be concerned with other target parasites becoming resistant I think though. Interesting to think about as I'm still trying to wrap my mind around this whole thing.
Deerdude
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Built up immunity is not my forte, but I understand the concern, for WT, if you introduced treated feed on a limited basis, would potential for developed immunity still be a problem or concern? I'm thinking that during fawning and again or through shedding velvet would cover much of the threat? Winter when they start fighting it tends to be maybe cold enough that flies are dormant, dead, or a very minimal threat?
Tecolote
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CrossTimbersW said:

Tecolote said:

FishrCoAg said:

RanchAg said:

It will be interesting to see how things shake out. I'm not sure that ivermectin is going to have the impact people think it will. It is definitely a tool that can be used, but USDA has been feeding it for over a decade to combat the fever tick and we still have issues with that pest.

It is very difficult to control consumption in wildlife, especially with the rain we received this year and there being so many other choices to browse. Factor in the social aspects of animals and I think you will see some over consume and others not consume enough.

Finally, what was proposed this afternoon was a prescriptive approach, not mass feeding of medicated corn/feed across the state. Ivomec is approved in livestock as a preventative but not a cure once NWS is found, and that is as an injectable. They are using dectomax as a preventative and treatment. Their models will need to be accurate for any medicated feed to have a positive impact.


I read a report from Costa Rica, where they have been dealing with it for years, saying that NWS was pretty resistant to ivermectin now. Can't vouch for the accuracy but it is concerning.

Just left a meeting with state vet (not Texas). This was stated by the vet as being thought to be the case and they are concerned with people thinking ivermectin is the cure all and using it inappropriately, thus enhancing even more the resistance by NWS. Medicated feeds were very worrisome to the vet as too many variables.


I understand this and I also don't think I disagree with it but another question that it raises to me is why not throw the kitchen sink at the fly while we're waiting on increased production of sterile flies? I would think even if the fly does build immunity to ivermectin, eventually we will have enough sterile fly production that it no longer matters if they're resistant or not. I haven't came to a conclusion on my end yet but it seems that building resistance to ivermectin won't be a real issue down the road. I would be concerned with other target parasites becoming resistant I think though. Interesting to think about as I'm still trying to wrap my mind around this whole thing.

Ivermectin will be one of the weapons in the fight against screw worms. I think it is the use it anywhere, everywhere, any concentration, etc. that is the main concern. Properly used and targeted is the key to its use.

Edit - we are seeing people hoarding again. Whether Ivermectin, Dectomax, Permethrin, etc., are all being sold out at feed stores, and wholesalers are showing signs of lots of "out of stock" - again, no one thinks of this happening but it does.
txags92
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Deerdude said:

Built up immunity is not my forte, but I understand the concern, for WT, if you introduced treated feed on a limited basis, would potential for developed immunity still be a problem or concern? I'm thinking that during fawning and again or through shedding velvet would cover much of the threat? Winter when they start fighting it tends to be maybe cold enough that flies are dormant, dead, or a very minimal threat?

The problem isn't the timing or duration, it is the dosage. If you put out feed and a deer only eats enough to get 1/3 of the intended dose, then any flies that infest that deer are going to potentially get exposed to a non lethal dose of the drug, which will help them build resistance to it.
bmfvet
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It's also not just resistance in screw worms, but other parasites as well. Low dose exposure will select for the resistant parasites. It's probably what accelerated the resistance in heartworms.
‘99
FishrCoAg
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bmfvet said:

It's also not just resistance in screw worms, but other parasites as well. Low dose exposure will select for the resistant parasites. It's probably what accelerated the resistance in heartworms.


And cattle, and small ruminant parasites.
FishrCoAg
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Tecolote said:

FishrCoAg said:

RanchAg said:

It will be interesting to see how things shake out. I'm not sure that ivermectin is going to have the impact people think it will. It is definitely a tool that can be used, but USDA has been feeding it for over a decade to combat the fever tick and we still have issues with that pest.

It is very difficult to control consumption in wildlife, especially with the rain we received this year and there being so many other choices to browse. Factor in the social aspects of animals and I think you will see some over consume and others not consume enough.

Finally, what was proposed this afternoon was a prescriptive approach, not mass feeding of medicated corn/feed across the state. Ivomec is approved in livestock as a preventative but not a cure once NWS is found, and that is as an injectable. They are using dectomax as a preventative and treatment. Their models will need to be accurate for any medicated feed to have a positive impact.


I read a report from Costa Rica, where they have been dealing with it for years, saying that NWS was pretty resistant to ivermectin now. Can't vouch for the accuracy but it is concerning.

Just left a meeting with state vet (not Texas). This was stated by the vet as being thought to be the case and they are concerned with people thinking ivermectin is the cure all and using it inappropriately, thus enhancing even more the resistance by NWS. Medicated feeds were very worrisome to the vet as too many variables.


Surely no one would use ivermectin inappropriately!
GottaRide
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S
Pretty soon I expect that anti-parasite treatments will require vet prescriptions, just like they did with antibiotics.
 
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