Effect of exogenous oxytocin hormone on oestrus synchronization in Nilotic goats of Sudan

Abstract

This experiment was conducted to determine the effect of exogenous 
oxytocin hormone on oestrus induction and synchronization in groups of ( n - 8 ) , and the control group ( n = 8 ) . were considered for this study . The 
created group was injected with 50 IU of synthetic oxytocin deep im on day 
zero , day , day 14 and day21 of the experiment , while the control group 
had zero treatments . Blood samples were taken from each doe in both 
groups every other day starting from day zero till day 27 of the experiment . 
Oestrus diagnoses were mainly via progesterone immunoassay based on 14 
level to be below2ng / ml , and heat signs as confirmatory elements . 
Emphasis was put on the synchronies after the 3 dose of oxytocin injection 
Results obtained showed that the treated group performed 75 % of destrus 
synchronies while the control group obtained 50 % of oestrus . Statistical 
analysis using Chi - square test had indicated no significant difference ( P > 
0.05 ) between the two groups in oestrus synchronization , but treated 
group had gained pronounced higher percentage of oestrus 
synchronization , i.c.75 % vs. 50 % . In conclusion Oxytocin , via its luteolytic 
physiological property , apparently causes oestrus synchronization in Nilotic 
goats using 50 IU , oxytocin . So , 50 IU of oxytocin can be considered as a 
research dose for oestrus synchronization in the above mentioned breeds , 
despite the insignificant difference .