Menu
Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Forums
Cattle Boards
Beginners Board
ivermectin cost
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support CattleToday:
Message
<blockquote data-quote="Lucky_P" data-source="post: 961068" data-attributes="member: 12607"><p>There are (at present) three classes of anthelminthics(dewormers) </p><p>Benzimidazoles - the 'white' dewormers - Panacur/Safeguard, Valbazen, etc.</p><p>Macrocyclic lactones - Ivermectin, Doramectin(DectoMax), Moxidectin(Cydectin)</p><p>Imidazothiazoles - levamisole, pyrantel, morantel, etc.</p><p>If you have a population of nematode parasites that are resistant to one member of any of the above classes of dewormers, they have resistance to ALL members of that class. So...in answer to your question Chris - since you're both using members of the same class of drugs, you're potentially going to see emergence of resistance to the MLs. Timing, frequency, and whether you deworm the entire herd or just the animals that 'need' it will come into play as to how rapidly the population of parasites will become totally resistance.</p><p></p><p>What we've seen in small ruminants, where resistance in their parasites(particularly H.contortus) is a major issue, is that if they have parasites resistant to Panacur/Safeguard, then they're also resistant to Valbazen. If they have resistance to ivermectin, they also have resistance to Cydectin - though the potency of Cydectin appears to be able to overcome ivermectin resistance to some degree, for a period of time - but eventually even Cydectin becomes ineffective.</p><p>Fortunately, at least for a little while, levamisol had sort of 'fallen out of favor' when ivermectin came on the scene, back in the early 1980s, so a lot of small ruminant parasites 'had not seen' levamisol in a long time, and I never knew of anyone using Strongid or Rumatel to any extent in ruminants, so the imidazothiazoles still have some efficacy - but it may not last long.</p><p>Not at all uncommon on a lot of small ruminant operations, to have populations of parasites that are resistant to ALL three classes of dewormers.</p></blockquote><p></p>
[QUOTE="Lucky_P, post: 961068, member: 12607"] There are (at present) three classes of anthelminthics(dewormers) Benzimidazoles - the 'white' dewormers - Panacur/Safeguard, Valbazen, etc. Macrocyclic lactones - Ivermectin, Doramectin(DectoMax), Moxidectin(Cydectin) Imidazothiazoles - levamisole, pyrantel, morantel, etc. If you have a population of nematode parasites that are resistant to one member of any of the above classes of dewormers, they have resistance to ALL members of that class. So...in answer to your question Chris - since you're both using members of the same class of drugs, you're potentially going to see emergence of resistance to the MLs. Timing, frequency, and whether you deworm the entire herd or just the animals that 'need' it will come into play as to how rapidly the population of parasites will become totally resistance. What we've seen in small ruminants, where resistance in their parasites(particularly H.contortus) is a major issue, is that if they have parasites resistant to Panacur/Safeguard, then they're also resistant to Valbazen. If they have resistance to ivermectin, they also have resistance to Cydectin - though the potency of Cydectin appears to be able to overcome ivermectin resistance to some degree, for a period of time - but eventually even Cydectin becomes ineffective. Fortunately, at least for a little while, levamisol had sort of 'fallen out of favor' when ivermectin came on the scene, back in the early 1980s, so a lot of small ruminant parasites 'had not seen' levamisol in a long time, and I never knew of anyone using Strongid or Rumatel to any extent in ruminants, so the imidazothiazoles still have some efficacy - but it may not last long. Not at all uncommon on a lot of small ruminant operations, to have populations of parasites that are resistant to ALL three classes of dewormers. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cattle Boards
Beginners Board
ivermectin cost
Top