Seasonal variations in serum pregnancy associated glycoproteins during early pregnancy in Aardi goats in central Saudi Arabia
Journal Title: Asian Pacific Journal of Reproduction - Year 2017, Vol 6, Issue 5
Abstract
Objective: To accurately detect pregnancy in local Aardi goats of Saudi Arabia before day 30 of pregnancy by using serum caprine pregnancy associated glycoproteins (caPAG) concentrations and to evaluate the effects of heat stress on early pregnancy and on caPAG concentrations in pregnant and non-pregnant goats. Methods: This study was to confirm the reliability of our methods in different seasons of the year. A new protocol to evaluate and improve Aardi goats' reproductive performance was implemented during summer and winter months. A total of 60 healthy mature Aardi goats were used (30 and 30 in the summer and winter, respectively). All were synchronized using an ovsynch protocol and then naturally mated (NM) to mature tested bucks. Conception rates and caPAG were measured and pregnancy was verified by ultrasonography. Results: Regardless of season, however, on day 23 and 35 post-NM, caPAGs were higher in sera of pregnant (P<0.05) than in non-pregnant goats, while there was no difference in caPAG concentrations on day 15. On day 23 and 35 post-NM, serum caPAG concentrations were higher (P<0.001) in the pregnant winter group than in the pregnant summer group, while no differences were found in non-pregnant goats. Measuring serum caPAG concentrations proved to be easy and accurate in assessing early stages of pregnancy (as early as 23 days post-NM) during both summer and winter seasons. Conclusions: It can be concluded that pregnancy rates were not affected by seasonal differences. The modified ovsynch program can be advantageous and worthwhile for its ease of use. When we add the accuracy of caPAG tests, such a program will help in detecting pregnancies in Aardi goats as early as 23 days post-NM, regardless of the season.
Authors and Affiliations
Mohamed J Al-Hassan, Kamal A Al-Samawi
Keywords
Related Articles
- EP ID EP243323
- DOI 10.4103/2305-0500.215934
- Views 204
- Downloads 0
Role of follicle-stimulating hormone and estradiol benzoate in recovering spermatogenesis in tamoxifen-injured rats
Objective: To evaluate the effects of follicle-stimulating hormone (FSH) and estradiol benzoate (EB) on the recovery of spermatogenesis, histology, sexual hormones levels and testicular gene expression in testes of tamox...
Antifertility properties of Centella asiatica ethanolic extract as a contraceptive agent: Preliminary study of sperm proteomic
Objective: To investigate the antifertility properties of Centella asiatica L. ethanolic extract and identify the sperm proteomic changes in treated male rats. Methods: A total of 32 male Sprague-Dawley rats were divided...
Dose and duration dependent cytotoxicity of aroclor 1254 in the testis of mice
Objective: To evaluate the dose and duration dependent cytotoxicity of aroclor 1254 on mice testis. Methods: The study tests the hypothesis that in vivo exposure of very low dose aroclor 1254, comparable to that of possi...
Sperm dosage and site of insemination in relation to fertility in bovines
Low sperm numbers in artificial insemination (AI)-doses are being used widely to make the best use of high genetic value bulls as well as sex-sorted semen. Sperm concentration needed for AI to obtain reasonable fertility...
Non-ischemic priapism in dog: Case report
Bulldog with unilateral cryptorchidism was admitted to our clinic suffering from a persistent erection for 2 d. The animal was left for the first time for breeding without observation. Penis was hyperaemic, oedematous wi...