Folicular dynamics, endocrine profiles and endometrial gene expression in fertile and subfertile cows.

Context Subfertility has a negative impact on the productivity of beef cow herds; thus, it is relevant to unravel the mechanisms. Aims To study follicular development, body composition, concentrations of progesterone and metabolic hormones and their gene expression in the endometrium during the oestrus cycle. Methods Fertile and subfertile Hereford cows were classified at 25 (n =84) and 60 (n =25) months old, as (1) fertile, pregnant at first insemination at 25months, that became pregnantmore than three of five times at 60months (n =5), or (2) subfertile, i.

At the crossroads: can desalination be a suitable public policy solution to address water scarcity in Chile's mining zones?

Water scarcity is a global issue that is threatening social and economic development. One approach to alleviating scarcity is the incorporation of new water sources into supply systems, including desalinated seawater for industrial and municipal use. In Chile, large volumes of water are used in water-scarce regions where mining takes place, alongside agriculture and small communities.