Abstract
Ontogeny of selected hemostatic system components was studied in 120 bovine fetuses which had been divided into eight monthly gestational age groups. Fetal blood was subjected to the following tests: platelet count, partial thromboplastin time, prothrombin time, thrombin time, fibrinogen quantitation, and assays for prothrombin and factors V and VIII. Platelet numbers corresponding to adult numbers were in fetal blood at least as early as gestation day 60, and their numbers varied only slightly thereafter. Bovine blood was incapable of in vitro coagulation at gestation day 90, with all samples coagulating by gestation day 150. Fetal coagulation screening test times (partial thromboplastin time, prothrombin time, and thrombin time) shortened during gestation and were near times of adults at birth. Of the four individual coagulation factors tested, only factor VIII reached adult values in the fetus in utero. Amounts of fibrinogen, prothrombin, and factors V and VIII in the neonate exceeded that of normal adult cattle.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1402-1405 |
| Number of pages | 4 |
| Journal | American Journal of Veterinary Research |
| Volume | 40 |
| Issue number | 10 |
| State | Published - Oct 1 1979 |
| Externally published | Yes |
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ASJC Scopus subject areas
- veterinary(all)
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Ontogeny of bovine hemostasis. / Culbertson, R.; Abildgaard, C. F.; Harrison, J.; Jefcoat, K.; Osburn, Bennie.
In: American Journal of Veterinary Research, Vol. 40, No. 10, 01.10.1979, p. 1402-1405.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ontogeny of bovine hemostasis.
AU - Culbertson, R.
AU - Abildgaard, C. F.
AU - Harrison, J.
AU - Jefcoat, K.
AU - Osburn, Bennie
PY - 1979/10/1
Y1 - 1979/10/1
N2 - Ontogeny of selected hemostatic system components was studied in 120 bovine fetuses which had been divided into eight monthly gestational age groups. Fetal blood was subjected to the following tests: platelet count, partial thromboplastin time, prothrombin time, thrombin time, fibrinogen quantitation, and assays for prothrombin and factors V and VIII. Platelet numbers corresponding to adult numbers were in fetal blood at least as early as gestation day 60, and their numbers varied only slightly thereafter. Bovine blood was incapable of in vitro coagulation at gestation day 90, with all samples coagulating by gestation day 150. Fetal coagulation screening test times (partial thromboplastin time, prothrombin time, and thrombin time) shortened during gestation and were near times of adults at birth. Of the four individual coagulation factors tested, only factor VIII reached adult values in the fetus in utero. Amounts of fibrinogen, prothrombin, and factors V and VIII in the neonate exceeded that of normal adult cattle.
AB - Ontogeny of selected hemostatic system components was studied in 120 bovine fetuses which had been divided into eight monthly gestational age groups. Fetal blood was subjected to the following tests: platelet count, partial thromboplastin time, prothrombin time, thrombin time, fibrinogen quantitation, and assays for prothrombin and factors V and VIII. Platelet numbers corresponding to adult numbers were in fetal blood at least as early as gestation day 60, and their numbers varied only slightly thereafter. Bovine blood was incapable of in vitro coagulation at gestation day 90, with all samples coagulating by gestation day 150. Fetal coagulation screening test times (partial thromboplastin time, prothrombin time, and thrombin time) shortened during gestation and were near times of adults at birth. Of the four individual coagulation factors tested, only factor VIII reached adult values in the fetus in utero. Amounts of fibrinogen, prothrombin, and factors V and VIII in the neonate exceeded that of normal adult cattle.
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UR - http://www.scopus.com/inward/citedby.url?scp=0018527947&partnerID=8YFLogxK
M3 - Article
C2 - 525861
AN - SCOPUS:0018527947
VL - 40
SP - 1402
EP - 1405
JO - American Journal of Veterinary Research
JF - American Journal of Veterinary Research
SN - 0002-9645
IS - 10
ER -