Dietary supplementation of n-3 polyunsaturated fatty acid alters endometrial expression of genes involved in prostaglandin biosynthetic pathway in breeding sows (Sus scrofa).

The present investigation was designed to study the effect of dietary supplementation of omega-3 (n-3) PUFA on endometrial expression of fertility-related genes in breeding sows. Sixteen crossbred sows were randomized to receive diets containing 4% (wt/wt) flaxseed oil as n-3 PUFA source (TRT group) or iso-nitrogenous, iso-caloric standard control diet (CON group), starting from the first day of estrus up to 40 days and were artificially bred on the second estrus. Endometrial samples were collected during days 10-11 and 15-16 post-mating for studying relative expression profile of candidate genes viz.

Resumption of ovarian cyclicity and fertility response in bull-exposed postpartum buffaloes.

A study was undertaken to evaluate the effect of bull exposure on resumption of ovarian cyclicity and fertility response in postpartum buffaloes raised under standard farm conditions. A total of 24 Murrah buffaloes was randomly grouped to receive one of the following treatments: (1) exposure to a vasectomised bull from 40th to 90th day postpartum (bull-exposed, BE, n=11) and (2) isolated from bull (non-exposed, NE, n=13). Changes in the progesterone concentration were used to assess the resumption of ovarian cyclicity.