Figure 2 - Average daily feed intake results. Negative control Nutritional solution


6.5 7


5.5 6


4.5 5


3.5 4


2.5 3


3 3


Last week of gestation


* Fresh Up, Wisium


1st week of lactation


2nd week of lactation


3ed week of lactation


Global lactation (21 days)


5 5.1 6 5.7 6.1 5.6


6.6 5.9


Gestating sows in hot conditions, on a farm near Ho Chi Minh City, Vietnam.


strategy developed by Wisium. Sows were exposed to a constant temperature of 28°C throughout the lactation peri- od. In the trial it was observed that the nutritional strategy helped to significantly (P=0.01) limit body losses over the lac- tation. The average body loss in the control group was 41.2 kg compared to 29.4 kg in the trial group (-11.8 kg). As a con- sequence of the improved situation of the sows, another clear benefit that was observed was reduced preweaning mortality (from 12.6% in the control group to 5.6% in the nutritional strategy group). During another R&D trial conducted in France in 2019 with a total of 43 sows from day 107 of gestation to weaning at 21 days, the same nutritional strategy was tested against a negative control. In this situation, sows were exposed to high temperatures (28–29°C during the day and 26°C at night). An improvement in average daily feed intake was observed for sows in the group receiving a three-dimensional heat stress strategy approach (+5.36%) for the overall lactation period (see Figure 2). Consequently, backfat and loin depth mobilisa- tion were slightly lower. Also, litter weaning weight was numerically improved by +3.82% in this group. In addition to a better feed intake, a better water intake was also observed: +10.9% for the tested group (34.6 litre/day vs 31.2 litre/day for the control group).


Global approach


Nutritional solutions help in managing heat stress better but cannot be the only approach. A global and holistic approach is key to limiting the negative impacts of heat stress on production. The Wisium solution, Fresh Up, is a


three-dimensional concept, which includes different and complementary tools: • A formulation support which is focused on optimisation of current formulas for better valorisation of feed by pigs under high temperature; • A connected device which collects environmental data and sends it to a platform so it is available in real time in the user’s hand. The device sends alert messages when environ- mental parameters are dangerous for animals or staff as well as predictive alerts in anticipation of a heat stress period; • Technical support based on animal and environmental management. Once farm management strategies have been implemented, high quality feed additives may be considered as potential solutions for both repair of gut damage and to increase the ability of the animal to cope with this environmental challenge.


Based on the detected risks, Fresh Up provides a nutritional solution to manage that challenge. The solution is a blend of natural and specific ingredients that is formulated to manage the risks of leaky gut and gut inflammation. One of the most effective ways to improve the structure of the gut is with certain additives that activate the sweet taste recep- tor T1R2/3 in the intestine, which stimulates the release of glucagon-like peptide (GLP-2) from the entero-endocrine cells of the gut. GLP-2 is a potent gastroprotective agent that increases blood flow, stimulates mucosal growth and prevents cell death during challenging conditions. Animals supplemented should have improved gut structure during heat stress but will also recover quicker.


▶ PIG PROGRESS | Volume 37, No. 5/6, 2021 15


ADFI (kg/day/sow)


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