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- Title
Testing milk pregnancy-associated glycoprotein for risk assessment service of abortion in dairy cattle.
- Authors
Tu, P. A.; Yang, M. K.
- Abstract
Embryonic death and abortion are the main factors that influence the reproduction efficiency of dairy cattle. Our previous research revealed that sufficient amount of PAG can be used as pregnancy diagnostic marker 14 days post-breeding. PAG is also a potential marker for evaluating the ability of pregnant persistency. We collected 7,214 pregnant milk samples and tested the samples for PAG. Conception rate of 6th week post-breeding was 70.6%. Ultrasonographic diagnosis of pregnancy was used for confirming embryonic heartbeat. The milk PAG was 1.196 ± 0.046 (mean ± SEM) 6th week post-breeding. Among them, the PAG concentration was 1.318 ± 0.047 and 0.697 ± 0.095 for the pregnancy persisting group and abortion group in 15th week, respectively. The result showed that if PAG concentration ≥ 1.021, the correctness of pregnancy persisting prediction until 15th week is 93.0%. However, if PAG concentration ≤ 0.351, the correctness of pregnancy loss prediction until 15th week is 92.3%.
- Subjects
DAIRY cattle reproduction; GLYCOPROTEINS; ULTRASONIC imaging; DAIRY cattle breeding
- Publication
Journal of the Chinese Society of Animal Science, 2021, Vol 50, p51
- ISSN
0253-9187
- Publication type
Article