weaning stress -sows - Anco FIT

Feeding sows and piglets for piglet resilience to weaning stress

How piglets cope with weaning stress has a significant impact on their subsequent performance. A commercial sow trial supervised by the University of Sao Paulo in Brazil evaluated piglet pre-and post-weaning performance in response to a feeding regime involving the gut agility activator Anco FIT.

Stressors at weaning

During the weaning process the pig is subjected to a number of different stressors: Abrupt separation from the sow, transportation and handling stress, change in diet, social hierarchy stress, co-mingling with pigs from other litters, change in environment, increased exposure to pathogens, and dietary or environmental antigens.

What matters is how the piglet adapts to the weaning stress

The piglet must adapt to the above stressors rapidly in order to be productive, healthy and efficient. On the cellular and gut level, the stressors at weaning will cause stress reactions, such as oxidative stress, reduced gut integrity, reduced feed intake and inflammatory responses. The extent of these reactions will determine the impact of weaning stress on subsequent health and performance of the piglet. This means that managing the piglet to reduce the stress reactions, will lead to a more resilient pig, i.e. lower fluctuations in performance and better health.

Nutritional solution for greater resilience

A gut agility activator is a feed solution designed to help the animal to adapt to stressors more efficiently by nutritional means. Part of its formula is a combination of bioactive compounds derived from herbs and spices known to reduce common stress reactions, such as antioxidative stress and reduced gut integrity.

Feeding the gut agility activator to highly prolific sows during lactation is expected to improve energy available for milk production due to reducing the extent of stress reactions in sows. As a result pre-weaning piglet growth is better, which again helps the piglets to be stronger at weaning.

In the post weaning diet for piglets, the gut agility activator is expected to help reduce the stress reactions in response to weaning stressors on the cellular and gut level in piglets. This should then increase the energy available for growth, since the stress reactions would normally increase maintenance energy and make piglets more susceptible to disease.

Evaluation of a gut agility activator on a sow farm in Brazil

The animal science department of the University of Sao Paulo evaluated the gut agility activator Anco FIT in a feeding program designed to improve adaptation to weaning in piglets in a commercial sow farm.

Experimental design

100 sows (PICxCamborough) were split into two groups 14 days pre-farrowing. One group was fed a control corn-soy diet and the other group was fed the control diet including 1kg/t of Anco FIT until the end of lactation. Average litter size per sow after fostering was 14 piglets. Piglets were weighed after fostering at birth and at weaning (26.5 days). Piglets stayed within groups post weaning. Piglets from sows fed Anco FIT received Anco FIT in their diets post weaning. Both groups of piglets were weighed at day 22 and day 33 post-weaning.

Results

Piglets from sows fed Anco FIT in their diets tended to have higher weaning weights despite being on average 1 day younger at weaning than piglets from control sows. In the post-weaning phase Anco FIT piglets grew significantly faster than control pigs and had significantly higher weights at day 22 and day 33 post weaning (+9.2% and +9.3% respectively). Apart from the fact that piglets tended to have higher weaning weights, this was mainly due to a significantly increased feed conversion ratio in Anco FIT piglets post-weaning.

Conclusion

A feeding strategy comprising the application of the gut agility activator Anco FIT to sows diets in lactation, followed by adding Anco FIT to piglet diets post weaning improved overall piglet performance from birth to day33 post weaning compared to the control feeding regime on a commercial sow farm. The improved FCR seen in Anco FIT piglets in the post weaning period might be explained by Anco FIT helping to reduce stress reactions on the cellular and gut level and thus saving energy for growth.

Related articles

Anco FIT – Managing cost- effectiveness of pig diets
The biological stress of early weaned piglets. Journal of Animal Science, 2013