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Breeding / Calving Issues
"BioPryn test after lutalyce" question . . .
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<blockquote data-quote="inyati13" data-source="post: 1348198" data-attributes="member: 17767"><p>BioPRYN Tests for a protein (PSPB) produced by the placenta. Only if the embryo is in the placental stage will the subject test as pregnant. The placenta is established and producing PSPB 30 days post breeding or AI.</p><p></p><p>Assuming the two heifers were pregnant and you Lutalysed them 30 days ago, you need to account for the time it takes Lutalyse to expell the pregnancy. That normally takes a few days up to 7 days. I would allow the PSPB to clear the blood stream. So 30 days after the pregnancy was ended by the lutalyse, the test should be negative if the lutalyse worked. Adding the numbers, you should get accurate results 37 days after you lutalysed the two heifers. It is likely that PSPB clears the bloodstream in less than 30 days. If you are in a hurry, the risk might be worth doing it sooner.</p><p></p><p>Reference BioPRYN Web page:</p><p><em>Pregnancy-Specific Protein B (PSPB), a protein only produced by the placenta of a growing fetus, in the blood circulation of the animal.</em></p></blockquote><p></p>
[QUOTE="inyati13, post: 1348198, member: 17767"] BioPRYN Tests for a protein (PSPB) produced by the placenta. Only if the embryo is in the placental stage will the subject test as pregnant. The placenta is established and producing PSPB 30 days post breeding or AI. Assuming the two heifers were pregnant and you Lutalysed them 30 days ago, you need to account for the time it takes Lutalyse to expell the pregnancy. That normally takes a few days up to 7 days. I would allow the PSPB to clear the blood stream. So 30 days after the pregnancy was ended by the lutalyse, the test should be negative if the lutalyse worked. Adding the numbers, you should get accurate results 37 days after you lutalysed the two heifers. It is likely that PSPB clears the bloodstream in less than 30 days. If you are in a hurry, the risk might be worth doing it sooner. Reference BioPRYN Web page: [i]Pregnancy-Specific Protein B (PSPB), a protein only produced by the placenta of a growing fetus, in the blood circulation of the animal.[/i] [/QUOTE]
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