Effect of bilateral ovarian massage on post-partum anoestrus interval in cross bred (Holstein Friesian x Sahiwal) dairy cows

Abstract

Post-partum anoestrus reduces the productivity of dairy cows by delaying in producing a calf in a year. Therefore, to restore early ovarian cyclicity bilateral ovarian massage was attempted. In present study both ovaries were massaged repeatedly after every 15 days of cross-bred (Holstein Friesian x Sahiwal) dairy cows (n=141) during 2005-6 to 2009-10. Results revealed that the incidence of anoestrus was reduced to 14.18% (20/141) and a 64.53% (91/141) pregnancy rate was recorded following bilateral ovarian massage performed at 15th, 30th, and 45th day post-partum. However, out of the 20 post-partum anoestrus cows (n=20), 50% (10/20) of the animals exhibited estrus with 45% (9/20) conceiving following bilateral ovarian massage performed at 60th , 75th , 90th and 105 days post-partum. The data in relation to animal’s age, lactation number versus ovarian cyclicity resumption was insignificant. It was concluded that bilateral ovarian massage was effective in inducing cyclicity in anestrus animals .