2018 | by PROHEALTH Consortium | Print Article

Conclusions from a PROHEALTH experimental study

Piglet mortality is a major concern for pig producers. On European farms, approximately one piglet out of five or six is born dead or dies after birth. The main cause of stillbirth is prolonged farrowing possibly due to stress or fatigue of sows; the main causes for post-natal mortality are hypothermia as a result of hypoxia and(or) starvation, crushing by the sow and infections.

There is some evidence that the environment of the sow during pregnancy can generate maternal stress which could influence piglets before and after birth. Notably, in a previous study of the PROHEALTH project, we observed a positive impact of a friendly housing system on sow welfare and piglet survival (see Newsletter No. 2, November 2015). This friendly “enriched” system in which sows were group-housed on deep straw litter and had 3.5 m2 per sow was compared to a system which is a conventional system in many European countries, including France, and in which sows were housed on a slatted floor and had only 2.4 m2 per sow. 

The difference in piglet survival likely had its origins during gestation since sows from both systems were transferred, a few days before farrowing, to maternity rooms with similar lactation pens and management practices. Based on these results, we hypothesized that enriching the environment and diet of sows housed in the conventional system to mimic straw supply might reduce maternal stress during pregnancy and piglet mortality.img

Three experimental systems were thus compared during pregnancy, from the less to the more enriched: the conventional system (C, on a slatted floor); the conventional system which was enriched with manipulable material and straw pellets (CE), and the enriched system (E, on deep straw litter and with additional space per sow). In the CE system, pieces of oak attached to a chain were provided to sows to fulfil their need for investigatory behaviour and straw pellets were provided to reduce their frustrated feeding motivation. Straw pellets were provided in the trough after each meal from 3 to 104 days of gestation. Then, all sows (n = 83) were transferred into farrowing pens and housed in identical individual crates on a slatted floor.

Maternal stress was assessed by cortisol concentrations in saliva and by behavioural traits. During late pregnancy, cortisol concentration of sows was greater in the conventional system (C) than in the enriched system (E) and was intermediate in the conventional enriched system (CE). The enrichment reduced sow stereotypies, which are repetitive movements or postures illustrating frustration (ECE>C). Piglet mortality during farrowing and within 12 h of birth was lower in the two enriched systems than in the conventional one. Total mortality (i.e. live-born + stillborn deaths) was lower by 4 percent points in these 2 systems but the difference did not reach the level of significance.

To conclude, when sows were housed in a conventional intensive system during pregnancy, enriching their environment with manipulable material and their diet with straw pellets throughout gestation improved their welfare. These effects were accompanied by a reduction in piglet neonatal mortality. Improving sows’ welfare during gestation should therefore be considered to reduce piglet mortality in pig farms.



  • George36 2 weeks ago

    Some services even offer huge discounts. You just need to know when exactly they ptovide them. Not so long ago, I saw a tremendous <a href="https://essaymillbusters.com/reviews/trustmypaper-com/">trustmypaper coupon</a> with a price reduction up to 20%.

  • newmancarl24 1 month ago

    We all need help from time to time. As for me, it’s worth trying https://buycollegeessays.online/. Placing orders wasn’t hard as I had thought before.

  • Nancy 1 month, 1 week ago

    Thanks for sharing such a great and informative post Black Widow Bomber Jacket

  • lyndawilliam 1 month, 1 week ago

    Eastern Oklahoma Dental Care is a health centered facility offering the best and affordable dental services to the patients. With the Affordable Family Dental Care in Tulsa, OK, we are able to make our facility a welcoming place for the patients. Know our team before booking an appointment by visiting our website.

  • mjackets 2 months ago

    I appreciate this blog your blog is vert help full for me i really enjoyed this stuff dude. Movie Jackets

  • mjackets 2 months ago

    This is the first time that I visit here. I found so many exciting matters in this particular blog, One thing I would like to request you that pls keep posting such type of informative blog. Spiderman Jacket

  • WillDudley 2 months, 2 weeks ago

    I wanted to have a look at free samples of college essays. I’ve found them on this website. They don’t charge for reading them https://qweetly.com.

  • alexbou741 2 months, 2 weeks ago

    Looking for writing assistance? Visit https://essaysmate.com  where you can get help with writing essay.

  • Kyrie382 2 months, 3 weeks ago

    Doctors are doing their best to pick some good things for them and try to test them too. The https://awriter.org/myassignmenthelp-com-review/ also explain things well about it in a recent writing guide.

  • heenacruzl 3 months, 4 weeks ago

    Thank you so much for taking the time for such good information.