Reproductive disorders in Corriedale ewes
Keywords:
Corriedale sheep, reproductive disorders, postnatal mortality, yearly variationAbstract
Reproductive disorders ofCorriedale ewes were studied for twelve years (1992-2003) at Sheep research station,
SKUAST-K, Srinagar. The reproductive disorders recorded were dry ewes, abortion, stillbirths, dystocia, lamb died due to
dystocia, ewes died before lambing and retained placenta. The occurrence of reproductive disorders varied significantly among the years. Out of total reproductive disorders, dry ewe percentage was highest (2.19 to 80.86 %; Av. 23.62 %) and retained placenta was lowest (0.03%). Incidence of other disorders recorded were abortion 0.25 %, still births 1.60 %, dystocia 1.23 %, lamb died
due to dystocia 0.43% and ewes died before lambing 6.87 %. The incidence of lamb mortality within 24 hours (0 to 2.86 %; Av.
1.04 %), lambs died due to poor mothering ability (0 to 4.5 %; Av. 1.31 %) and mastitis (0 to 1.90 %; Av. 0.71 %) varied significantly among the years.
