THE EFFECTS OF EXOGENE GnRH ON PLASMA TESTOSTERONE CONCENTRATIONS IN ANATOLIAN SHEPHERD DOG

Abstract

The aim of present study was to investigate testosterone patterns before and after GnRH injection and to determined the effieacy of GnRH on indueing libido activity in male Anatolian shepherd dogs. A GnRH- analogue (Buserelin) was administered at the dosage of 25 /Lg to 2 to 5- years old intramusculGlY, 6 pure breed Anatolian shepherd male dogs. Peripheral plasnıa testosterone concentrations (T) were measured before and after GnRH injections. Blood sanıples were taken before GnRH injection and after GnRH injection every 60 nıin for a period of 3h. Plasma testosterone concentrati01IS were deternıined by the radioimmunoassay. Before GnRH injections, plasma T leve/s were obtained 2.4:1:1.6 ng/nıl. T levels were obtained 5AH.05, 3.2i:l. L. 3.0iO.8 ng/ml respectively. 1h, 2h and 3h after the iI~iection. According to the results, T leve/s of all the dogs reached the maximum level lh after GnRH injections (PO.OOl). We concluded that GnRH teratment induced transitory inLTeases in the testosterone concentration in pure breed Anatolian shepherd male dogs and it has been proved that this procedure may be helpful in order to stimulate libido for breeding dogs to a great extent.

Keywords

• Testosterone
• GnRH
• Male Dog

References

1. Ankara Üniversitesi – Ankara Üniversitesi Veteriner Fakültesi Dergisi