Adisseo

Hydroxy-selenomethionine secures performance of broilers under heat stress

02/21/2019

Dr. Michele De Marco, Global Scientific & Technical Manager at Adisseo, presented our latest research during the Australian Poultry Science Symposium (APSS).

This new study investigated the effect of different selenium dietary sources on heat stress management, in finishing broilers.

The experiment was designed in collaboration with the University of Ghent using a cyclic heat stress model to study the effects of Selisseo® on the FCR of broilers; along with some heat stress-related biomarkers. In the finisher phase of the breeding cycle (day 25 to day 39) the temperature in the experimental poultry house was increased from 22°C to 34°C for six hours per day, with a relative humidity between 50 and 60%. Broilers were reared for 39 days and fed a diet with either 0.3 ppm Se kg/feed from sodium selenite or 0.3 ppm Se kg/feed from Selisseo®.

When the cyclic heat stress was applied, a significant improvement in feed efficiency was observed for the Selisseo® group compared to the sodium selenite group (1.56 vs. 1.62, respectively). Mortality in the finisher period, which increased substantially with cyclic heat stress, was lower of -4.2 points for the Selisseo®-fed birds compared to the birds fed sodium selenite.

The results obtained on performances were furthermore corroborated by different biomarkers. In fact, the selenium levels in plasma was significantly higher in the Selisseo® group than the sodium selenite group – confirming the higher bioavailability of the organic form. On day 39, broilers fed Selisseo® maintained significantly higher serum T3 level than in broiler fed sodium selenite indicating a higher metabolic efficiency. Moreover, broiler fed Selisseo® showed lower plasma heat shock protein 70 (HSP70), an indication of lower oxidative damages in the cells. These results indicate a better adaptation to heat stress of broilers fed Selisseo®.

Dr. Michele De Marco commented: “Maintaining the antioxidant balance, by ensuring an adequate production of selenoproteins, is the key to secure broiler’s performance during heat stress. Feeding broiler with a pure form of organic selenium such as Selisseo® enhance the selenium deposition in tissues creating a sort of “selenium insurance policy”. This selenium insurance policy enables animals to produce enough amounts of antioxidant enzymes during heat stress – when feed intake is reduced resulting an effective way to secure their growth performance and to reduce the mortality rate in this challenging condition.”

Tweets

Our Spanish site in Burgos 🇪🇸 welcomes 9 students for an #internship, coming from different training centers, in collaboration with our company. We wish them all an excellent professional experience at Adisseo 🙌 https://t.co/HEATtBYT1l Adisseo photo
Vous recherchez un nouveau challenge ? Découvrez les postes à pouvoir en #France :
💻 Chef de projet Power BI
🏭 #Ingénieur Méthodes et fiabilité
🔬 Technicien In Vitro
📅 Responsable Plannification
👩‍🎓 Chargé etudes SIRH ( alternance)
Plus d'infos : https://t.co/qyM30kTpSr https://t.co/zXA2befJTy
Join us in celebrating the #30thAnniversary 🎉 of #AminoAcidBalancing in dairy rations.
There will be a series of six #webinars 💬
The overall focus is Amino Acid balancing for Lifetime Performance. Stay tuned for more information to come! https://t.co/22WQwO2UGf
🦃 New article written by Dolores I. Batonon-Alavo, Yves Mercier and Rob B. Shirley on #turkey #methionine requirements, result of a trial conducted in the US, with the use of DL-HMTBA (OH-Methionine) and DL-Methionine as methionine sources: https://t.co/EFWspWi3QV @PoultryWorld https://t.co/pG8sXduD4r Adisseo photo
[Did you know ❓] #Adisseo at a glance what is it? 😉
🏭 18 plants
🔬 8 research centers
💼 2 industrial platforms
🧑🔬 290 researchers
🤝 2656 employees
🌍 4200 customers worldwide
➡️ https://t.co/IPlhgONE59 https://t.co/829JthmUmq
For several weeks now, you have been discovering the feedback of #Adisseo employees through a mini-series 📹 Today, Delphine Bayle, quality manager for the R&I nutrition, shares her feelings after moving few months ago. You want to join us? Apply now: https://t.co/3NL7kde8CE https://t.co/vY0hhTQ64a