Effect of dose level of Estrumate® (prostaglandin) on estrus response of two Nigeria breeds of goat
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Date
2018
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Kebbi State University, Aleiro
Abstract
The present study was aimed at determining the effect of dose level of prostaglandin on estrus response
in Sokoto Red Goats (SRG) and West African Dwarf (WAD) goats. Estrumate® (a prostanglandin
analogue) was administered by intramuscular injection to thirty does (15 animals per breed) at three
dose levels (0.25ml, 0.50ml and 0.75ml). Results showed that dose level influenced the proportion of
animals that responded to Estrumate® in the two breeds. Results further showed marked difference in
the estrus response between WAD and SRG at 0.25ml Estrumate® dose level (60 against 40%
respectively). There was also breed difference in overall response (87 and 80% for WAD and SRG does,
respectively). Time interval between Estrumate® administration and onset of heat ranged from 48-72
hours. Dose level influenced interval between Estrumate® administration and onset of heat in WAD
goats. Dose levels of 0.50 and 0.75ml hastened the onset of heat (48-54hrs after injection) and shortened
within breed variation compared to dose level of 0.25 ml (60-72 hrs after injection). Pearson correlation
showed strong associations among levels of Estrumate® administration, time before the onset of heat
and the number of does that showed estrus in both West African Dwarf and Sokoto Red goats. It was
concluded from the study that 0.50ml of Estrumate® can be used to achieve a satisfactory estrus
synchronization in both SRG and WAD does
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Keywords
Estrumate®, Estrus, Red Sokoto goat, West African Dwarf, Correlation