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BioPRYN (Preg Test for Cattle)
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<blockquote data-quote="milkmaid" data-source="post: 563812" data-attributes="member: 852"><p>It's not too far. I use a 1" needle on cows and go in at... oh, no more than a 45' angle. Wouldn't want to go too deep as the artery is under there somewhere. You'll usually hit the vein at about 1/2", sometimes it's a bit deeper. Calves I can use a 3/4" needle on but 1" is easier if you're doing a big IV -- like putting fluids into a dehydrated calf. (Note that dairy animals have less fat than beef animals; it's possible you'd have to go a tad deeper on a beef cow?) The vein is parallel to the neck, same place as a horse. It's just easier to see on a horse.</p><p></p><p>I like to tie them when IV'ing not just because it's safer and easier, but also because when I have to IV I'm usually putting a caustic substance into the cow... calcium, dextrose, oxytet, sodium iodide, etc... and if that cow moves too much I might ruin the vein by getting the substance outside the vein.</p><p></p><p>Sometime when you want to avoid doing something like cleaning the house, LOL... try putting a cow in the chute and shaving the area where the vein is. If you put rubbing alcohol or warm water on it the vein will stand up a little and it'll be easier to see. If you put your fingers on that groove to stop the blood flow it's also easier to see; same way you'd do if you were drawing blood on a horse. Another thing that might help you is trying with a syringe that has something like dex or another cheap, harmless substance in it. For some reason it's often easier to find the vein when you're using a syringe, esp one with fluid.</p><p></p><p>I practice on just about every cow I have opportunity to practice on. Boss had a heifer with peritonitis recently that he had to put down, and I begged for the chance to try hitting the vein before he shot her. A bit morbid, perhaps, but it was one more opportunity to practice my IV skills. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick out tongue :p" loading="lazy" data-shortname=":p" /></p></blockquote><p></p>
[QUOTE="milkmaid, post: 563812, member: 852"] It's not too far. I use a 1" needle on cows and go in at... oh, no more than a 45' angle. Wouldn't want to go too deep as the artery is under there somewhere. You'll usually hit the vein at about 1/2", sometimes it's a bit deeper. Calves I can use a 3/4" needle on but 1" is easier if you're doing a big IV -- like putting fluids into a dehydrated calf. (Note that dairy animals have less fat than beef animals; it's possible you'd have to go a tad deeper on a beef cow?) The vein is parallel to the neck, same place as a horse. It's just easier to see on a horse. I like to tie them when IV'ing not just because it's safer and easier, but also because when I have to IV I'm usually putting a caustic substance into the cow... calcium, dextrose, oxytet, sodium iodide, etc... and if that cow moves too much I might ruin the vein by getting the substance outside the vein. Sometime when you want to avoid doing something like cleaning the house, LOL... try putting a cow in the chute and shaving the area where the vein is. If you put rubbing alcohol or warm water on it the vein will stand up a little and it'll be easier to see. If you put your fingers on that groove to stop the blood flow it's also easier to see; same way you'd do if you were drawing blood on a horse. Another thing that might help you is trying with a syringe that has something like dex or another cheap, harmless substance in it. For some reason it's often easier to find the vein when you're using a syringe, esp one with fluid. I practice on just about every cow I have opportunity to practice on. Boss had a heifer with peritonitis recently that he had to put down, and I begged for the chance to try hitting the vein before he shot her. A bit morbid, perhaps, but it was one more opportunity to practice my IV skills. :P [/QUOTE]
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