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Health & Nutrition
Bottle Jaw Causes
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<blockquote data-quote="palomino985" data-source="post: 628056" data-attributes="member: 9480"><p>There's a type of worm that can cause bottle jaw called Ostertagia. It is similar to small strongyles (cyathostomes) in horses. It may cause two different types of disease. Type II occurs typically in cattle over 1 year of age- and in the south, during late summer, practically into September is when you will see signs of this disease.. diarrhea, bottle jaw, dehydration, decreased appetite, etc..</p><p></p><p>What happens is this: The cattle ingest the eggs which develop into larvae. Somehow through some sort of biological cues these larvae know that it's not the right time of year to deposit their eggs (the heat and usual dryness of summer really gets to the eggs and kills them..) so they embed themselves in the abomasum and wait until they get signals that weather is getting 'better' for survival of their eggs. THEN they all come out at once and finish development and THEN will start producing eggs. Just because you don't see eggs in the feces doesn't mean the cattle don't have worms, it just means that if there ARE worms they aren't producing anything.</p><p></p><p>I'm not a veterinarian (yet) but I stumbled across this site while I was working on something for my parasitology class and just thought I'd throw that in.. not saying it's the cause but it's worth considering.</p><p></p><p>I *think* ivermectin should be effective against Ostertagia as well as Haemonchus which can cause bottle jaw also (but it doesn't embed itself in the stomach like Ostertagia and come out all at once).. but you have to hit them with it at the right time.. might want to find a vet or someone and ask them..</p></blockquote><p></p>
[QUOTE="palomino985, post: 628056, member: 9480"] There's a type of worm that can cause bottle jaw called Ostertagia. It is similar to small strongyles (cyathostomes) in horses. It may cause two different types of disease. Type II occurs typically in cattle over 1 year of age- and in the south, during late summer, practically into September is when you will see signs of this disease.. diarrhea, bottle jaw, dehydration, decreased appetite, etc.. What happens is this: The cattle ingest the eggs which develop into larvae. Somehow through some sort of biological cues these larvae know that it's not the right time of year to deposit their eggs (the heat and usual dryness of summer really gets to the eggs and kills them..) so they embed themselves in the abomasum and wait until they get signals that weather is getting 'better' for survival of their eggs. THEN they all come out at once and finish development and THEN will start producing eggs. Just because you don't see eggs in the feces doesn't mean the cattle don't have worms, it just means that if there ARE worms they aren't producing anything. I'm not a veterinarian (yet) but I stumbled across this site while I was working on something for my parasitology class and just thought I'd throw that in.. not saying it's the cause but it's worth considering. I *think* ivermectin should be effective against Ostertagia as well as Haemonchus which can cause bottle jaw also (but it doesn't embed itself in the stomach like Ostertagia and come out all at once).. but you have to hit them with it at the right time.. might want to find a vet or someone and ask them.. [/QUOTE]
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