Fillet colour of pangasius fed corn (Co), cassava (DC) and sorghum (SR) based diet. (Photo: US Grains Council Report)
USGC promotes sorghum as fish feed in Southeast Asia
Wednesday, September 13, 2017, 03:50 (GMT + 9)
The U.S. Grains Council (USGC) and United Sorghum Checkoff Program (USCP) travelled at the end of August to Southeast Asia to demonstrate the potential of US sorghum as a feed ingredient for fish.
The USGC recently completed in-country feeding trials to test the viability of substituting sorghum or corn for cassava, with support from the USCP, for pangasius, a large catfish species native to Southeast Asia. The trials concluded both grains could replace cassava as a source of starch for feeding pangasius.
Results showed no difference between the sources of starch on growth performance, fillet colour or physical properties of feed pellet quality (density and floatability). Beyond starch, sorghum is also low in tannins and contains higher protein than cassava as well as more amino acids (similar to corn), particularly tryptophan and threonine, the USGC said.
The USGC and USCP are showcased these results during travel to Vietnam and Thailand, including to one of the world’s leading seafood trade shows - VietFish 2017. Every year, nearly 200 local and international exhibitors participate in the show, with approximately 30,000 visitors from Vietnam and around the world attending.
The Council and the USCP conducted a series of seminars during the tradeshow as well as distributed the trial results at technical workshops and discussions in Thailand.
Sorghum is one potential ingredient to substitute for cassava as a source of starch for feeding pangasius in Vietnam. Sorghum contains a reasonable amount of protein (10 per cent), higher than cassava. Sorghum contains higher amino acids, similar to corn but relatively higher in tryptophan and threonine.
The USGC conducted a sorghum feeding trial to pangasius catfish at research farm of a private company in Vietnam. The sorghum diet was compared to a cassava-based diet and corn-based diet.
Photo: United Sorghum Checkoff Program.
Sorghum is traditionally grown throughout the Sorghum Belt, which runs from South Dakota to Southern Texas, primarily on dryland acres. Acreage increases are seen in non-traditional areas like the Delta and Southeast regions.
In 2016, sorghum was planted on 6.7 million acres and 480 million bushels were harvested. The top five sorghum-producing states in 2016 were:
- Kansas – 3.1 million acres;
- Texas – 1.9 million acres;
- Colorado– 450,000 acres;
- Oklahoma – 400,000 acres;
- South Dakota– 270,000 acres.
Source: Susan Reidy /world-grain.com | FIS