**5. Robustness needed, resilience favored**

The climate change requires a brave vision regarding breeding goals in the pig in the future. Buildings housing pigs will need to be energy saving and reducing CO2 emissions in the future. On the other hand, hotter climate will need pigs to be robust and more resilient under heat with less susceptible to becoming stressed under those conditions. Hyper-prolific sows, however, may actually be quite sensitive to heat in comparison to less productive breeds [81].

Consumers appear to asking for improved welfare such as provided by free farrowing /free lactation discussed earlier [34]. Therefore, there appears to be growing demand for cross breeding/genes for these characteristics and traits. Recent developments in reproductive technology may provide tools for international trade of germ cells and embryos in the near future.
