NEWS 100 FEED & ADDITIVE MAGAZINE July 2024 Selko, the feed additives brand of Nutreco, unveiled its latest research findings on dietary interventions to reduce Vibriosis pressure in shrimp farming. Study results were presented during the Asia-Pacific Aquafeed 2024 event in Surabaya, Indonesia. Saravanan Subramanian, Global Technical Commercial Manager Aquafeed at Selko® shared findings from a study investigating the dietary effect of an organic acid-based additive (Selko® Selacid® GG) in supporting shrimp under a Vibriosis challenge. Researchers at Central Institute of Brackishwater Aquaculture, ICAR, India looked at shrimp survival and the total Vibrio load in the hepatopancreas (HP) seven days following a Vibrio sp. immersion challenge. Shrimp in three treatment groups received diets with specific inclusion levels of an organic acid blend Selacid® GG (0.1%, 0.2%, 0.3%) and findings for each treatment group were compared to shrimp in a positive and negative control group receiving the same diet without the organic acid blend. Researchers looking at growth parameters including final body weight, weight gain, specific growth rate, and survival rate reported that shrimp fed the 0.2% organic acid blend diet had significantly higher values than the positive control group. Additionally, microscopic analysis revealed relatively less degeneration and necrosis of HP tubules and HP epithelial cells, along with fewer inflammatory indicators, among the group receiving the 0.2% organic acid blend. Shrimp receiving the organic acid blend at 0.2% in the diet had significantly reduced Vibrio load in HP along with improved immunity, growth and survival compared to the positive control group. Read more>> Selko discusses Vibriosis in shrimp at event in Asia Darling Ingredients Inc., one of the world's leading companies turning food waste into sustainable products and producer of renewable energy, announced that it plans to reduce emissions from its wastewater treatment plants at some of its rendering facilities by capturing biogas and converting it to renewable natural gas (RNG) in partnership with GreenGasUSA. The initial plan is to start with five Darling Ingredients plants in the United States with the opportunity to expand to other facilities depending on feasibility and market conditions. "Darling continues to find value where others see waste," said Randall C. Stuewe, Chairman and CEO of Darling Ingredients. "By combining our deep knowledge of RNG from our position in Europe with the capabilities of GreenGas in the U.S., Darling can significantly decrease its greenhouse gas emissions and help develop a successful RNG business in the U.S." Read more>> Darling Ingredients to reduce emissions through renewable natural gas production
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