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Dex/Lute Question
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<blockquote data-quote="farmerjan" data-source="post: 1714944" data-attributes="member: 25884"><p>Inducing labor a week or 2 before due date is a whole different ball game than trying to abort in the 5-8 month time frame. They often will not properly dialate when trying to abort.... hence the aborting when not far along so that the body passes it off and the fetus is very small. I do not know all the exact details. But if trying to induce labor you are trying to get dialation and ready the birth canal for birth. And that close to actual due dates has the animals' body getting ready for the birthing process anyway. Hormone changes and all. My vet has always said to give lute and then 2 weeks later give another shot of lute to heifers that have come off their mommas if I have any inclination they were possibly bred by the bull. You have to have them at least 10-14 days post breeding for the lute to cause the hormone shift and to get them to come back into heat. If we got the bulls out after 75 days breeding..... 99.9% of the heifers would have been too young to have even thought about coming into heat. But often the bulls go out with the cows to be bred back, with 60-90 day old calves, and stay there until we get them back up in late fall to wean calves and preg check the cows. Some places it is just not workable to get the bulls out . It would get our calving windows down and we would probably do a better job of weaning and then marketing calves. But with working other jobs and many other demands, several places the bulls go in and stay for 6 months.</p><p> </p><p>To use lute you have to understand the cycles too. It does no good to give lute 2 days after a possible breeding because of the hormone influence. Lute is used to cause the CL to shrink and dissipate so that the ovary will produce another egg. If there is a CL, it causes the ovary to stop producing eggs and for the uterus to have higher levels of the pregnancy hormone, to allow the egg to implant and grow. If there is no egg to implant, then the hormones "switch" and the one that kicks the ovary into producing eggs takes over, the blood lining is sloughed off then, and a new egg is produced and the whole cycle starts over. If you use lute, it causes the pregnancy hormone to recede, therefore the egg that may have implanted in the uterus will be shed off in the process and the ovary will kick in and a new egg will be formed. One is estrogen and the other is progesterone. </p><p></p><p>Perhaps when you first get these heifers, you need to have them preg checked and then make decisions from there. If they are guaranteed open, then you have recourse. But if you are just buying them, with no guarantees, then you need to reconsider how to handle them when they first get to your place. Every place that I have know that buys heifers to feed out will go through some sort of lute protocol from day one to make sure they are not bred unless they are spayed heifers.</p></blockquote><p></p>
[QUOTE="farmerjan, post: 1714944, member: 25884"] Inducing labor a week or 2 before due date is a whole different ball game than trying to abort in the 5-8 month time frame. They often will not properly dialate when trying to abort.... hence the aborting when not far along so that the body passes it off and the fetus is very small. I do not know all the exact details. But if trying to induce labor you are trying to get dialation and ready the birth canal for birth. And that close to actual due dates has the animals' body getting ready for the birthing process anyway. Hormone changes and all. My vet has always said to give lute and then 2 weeks later give another shot of lute to heifers that have come off their mommas if I have any inclination they were possibly bred by the bull. You have to have them at least 10-14 days post breeding for the lute to cause the hormone shift and to get them to come back into heat. If we got the bulls out after 75 days breeding..... 99.9% of the heifers would have been too young to have even thought about coming into heat. But often the bulls go out with the cows to be bred back, with 60-90 day old calves, and stay there until we get them back up in late fall to wean calves and preg check the cows. Some places it is just not workable to get the bulls out . It would get our calving windows down and we would probably do a better job of weaning and then marketing calves. But with working other jobs and many other demands, several places the bulls go in and stay for 6 months. To use lute you have to understand the cycles too. It does no good to give lute 2 days after a possible breeding because of the hormone influence. Lute is used to cause the CL to shrink and dissipate so that the ovary will produce another egg. If there is a CL, it causes the ovary to stop producing eggs and for the uterus to have higher levels of the pregnancy hormone, to allow the egg to implant and grow. If there is no egg to implant, then the hormones "switch" and the one that kicks the ovary into producing eggs takes over, the blood lining is sloughed off then, and a new egg is produced and the whole cycle starts over. If you use lute, it causes the pregnancy hormone to recede, therefore the egg that may have implanted in the uterus will be shed off in the process and the ovary will kick in and a new egg will be formed. One is estrogen and the other is progesterone. Perhaps when you first get these heifers, you need to have them preg checked and then make decisions from there. If they are guaranteed open, then you have recourse. But if you are just buying them, with no guarantees, then you need to reconsider how to handle them when they first get to your place. Every place that I have know that buys heifers to feed out will go through some sort of lute protocol from day one to make sure they are not bred unless they are spayed heifers. [/QUOTE]
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