The introduction of yeast in the diet prevents the occurrence of heat stress in pigs

Heat stress in pigs, which often results in reduced or complete lack of food intake, is a problem that many breeders face. However, the latest research shows that if pigs ingest a sufficient amount of probiotics through yeast, it could improve their digestion and help them survive high temperatures.

Pigs are animals that are exceptional sensitive to high temperatures. At temperatures above 25 ° C, sows already show the first signs of heat stress. Their behavior and eating habits change to make it easier to adapt to high temperatures. This is evidenced by the fact that in 2003, heat stress caused economic losses in the pig industry in value of $ 299 million per year in the United States only.

The effects of heat stress on pig health are not negligible. With the onset of heat stress, it has been proven that endotoxin levels increase which can later cause shock. Increased levels of this lipopolysaccharide lead to a weakening of immunity and intestinal function, which can lead to pathogen transmission from the intestinal lumen into the bloodstream.

A study conducted at the French National Institute of Agriculture aimed to show that the intake of probiotics through yeast is a good way to improves digestion in sows during high temperatures.

Dietary yeast reduces heat stress in pigs - © Pixabay

The results of this study indicated that live yeast had a positive effect in both pigs that were in a thermo-neutral environment and in those that were subjected to heat stress conditions. However, it has been proven that yeast intake in those pigs that were subjected to heat stress was more efficient.

This research has proven that the intake of yeast improves eating habits pig and has a positive effect on the use of retention and use of energy in the body. Namely, during this probiotic diet, the high temperature had no effect on the daily diet of pigs. On the contrary, all pigs showed significantly better appetite and had a higher number of meals during the day compared to the period when they were not subjected to this diet.

Also, pigs are under conditions of heat stress consumed a large amount of energy to adapt to high temperatures. By adding yeast to the diet, that amount of energy is significantly reduced.