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Cattle Boards
Breeding / Calving Issues
EMBRYO CLASSIFICATION AND GRADING
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<blockquote data-quote="ETschool" data-source="post: 1276659" data-attributes="member: 20428"><p>As I reported in the newsletter grading is unfortunately subjective, one technician will grade an embryo a 2, while another will grade the same embryo a 1. Also there are differences in the pregnancy rates of # 1 embryos from two different donors,that is why I impress on my students keep accurate records of the performance of each donor. In this case it would have been wise to transfer some of these # 2 embryos as soon as a significant number of # 2s are diagnosed. In addition from some donors occasionally the # 3s yield satisfactory results, so I will transfer them if there are available recipients.</p></blockquote><p></p>
[QUOTE="ETschool, post: 1276659, member: 20428"] As I reported in the newsletter grading is unfortunately subjective, one technician will grade an embryo a 2, while another will grade the same embryo a 1. Also there are differences in the pregnancy rates of # 1 embryos from two different donors,that is why I impress on my students keep accurate records of the performance of each donor. In this case it would have been wise to transfer some of these # 2 embryos as soon as a significant number of # 2s are diagnosed. In addition from some donors occasionally the # 3s yield satisfactory results, so I will transfer them if there are available recipients. [/QUOTE]
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EMBRYO CLASSIFICATION AND GRADING
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