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- Title
PLASMATIC PROFILES OF PREGNANCY-ASSOCIATED GLYCOPROTEIN AND PROGESTERONE LEVELS DURING EARLY PREGNANCY IN CARPATHIAN GOAT.
- Authors
Zamfirescu, Stela; Anghel, Andreea; Nadolu, Dorina; Dobrin, N.
- Abstract
The choice of an adequate manner of breeding and exploiting small ruminants which will lead to the increased reproduction efficiency and also to the increased number and quality of these animals depends on the determination of an early diagnosis of gestation. This study was carried out to determine caprine pregnancy-associated glycoprotein (cPAG) and progesterone (P4) levels in the plasma of Carpathian goats throughout gestation. The cPAG levels were determined with a heterologous RIA. The P4 levels were measured by RIA. The statistical analysis of the PAG concentration values in goats with known reproduction grouped females into 4 groups, namely: pregnant RIA-clinically pregnant (positive diagnosis), non-pregnant RIA-clinically non-pregnant (positive diagnosis), non-pregnant RIA-clinically pregnant (incorrect diagnosis) and embryonic mortality. The results obtained demonstrated that the precision of the correct diagnosis for pregnancy and non-pregnancy on days 14-35 from mating was 92.85%, while the RIA-PAG error was 7.15%. Embryonic mortality was highlighted in 8.11% of the females and occurred in the interval of 25-35 days. On days 14- 25 of pregnancy, the values of the serum progesterone were close (12.18-13.33 ng/ml), which confirms that the unique source of progesterone is the gestation corpus luteum. The results obtained led to the conclusion that the quantitative assessment of proteins associated to gestation (PAG) by the RIA technique can be used as a sure method to establish early gestation in goats. The presence of a large quantity of gestation proteins in Romanian goat breed confirms gestation on day 14 after mating in goats, while the sudden drop of PAG values on day 30 after mating confirms the occurrence of embryonic mortality. In what regards the progesterone concentration, the precision of the gestation diagnosis is at its maximum on days 14-35 of pregnancy.
- Subjects
GLYCOPROTEINS; PROGESTERONE; PREGNANCY; GOATS; ANIMAL breeding; ANIMAL reproduction
- Publication
Annals of the Romanian Society for Cell Biology, 2011, Vol 16, Issue 2, p50
- ISSN
2067-3019
- Publication type
Article