| A group of poultry scientists led by Dr. Bill Dozier, a USDA-Agricultural Research Services scientist, underscored recently that glycerin, a co-product produced in the production of biodiesel, could have value as a poultry feed ingredient. |
| Release Date: 2008年2月26日 |
| A group of poultry scientists led by Dr. Bill Dozier, a USDA-Agricultural Research Services scientist, underscored recently that glycerin, a co-product produced in the production of biodiesel, could have value as a poultry feed ingredient. Their findings indicate that glycerin can be used efficiently by broiler chickens, with their research suggesting an apparent metabolizable energy of around 92 – 95 percent. The research gives reassurance that alternative ingredients like glycerol can be utilized effectively in the face of rising corn costs. The researchers recently publicized their findings in the scientific journal Poultry Science. The topic of feeding glycerine to poultry and livestock has also been covered in the December 2006 issue of Feed International. The research led by Dr. Dozier is exciting from the standpoint that it indicates that the energy in glycerin, a co-product created in the production of biodiesel, is almost completely metabolized when used as an ingredient in feed for broiler chickens. The findings point to the potential for significant cost savings for poultry producers, as greater amounts of glycerin become available for use in feed, due to increasing production of biodiesel. From 2006 to 2007, U.S. production of biodiesel, a fuel for diesel engines, almost doubled, jumping from 250 million to 450 million gallons, resulting in the creation of an additional 18 million gallons of glycerin. Glycerin and biodiesel are produced by the transesterfication of triglycerides found in soybean and corn oils, and animal fats from processing plants, in a process using methanol and sodium hydroxide. Dr. Dozier’s research involves a series of three energy balance experiments conducted to determine the apparent metabolizable energy (AMEn) of glycerin using broiler chickens of diverse ages. They found that the average AMEn of glycerin across the three experiments was 3,434 kcal/kg, which is similar to its gross energy (GE) content. Based on their findings, the researchers say that the AMEn content of glycerin can be assigned 92 to 95 percent of its GE. Dr. Dozier points out that over the last two years, the U.S. poultry industry has spent an additional $2 billion on feed costs, due to higher corn prices resulting from ethanol production. Given that the recent energy bill signed by U.S. President George W. Bush will increase ethanol production significantly, corn prices will likely continue to climb. Consequently, finding alternative sources for feed ingredients is vital in controlling production costs for the industry, and, ultimately, retail costs for consumers, he adds. Dr. Dozier concludes that with the rapid increase in the production of biodiesel bringing a great deal more glycerin onto the market, glycerin has the potential to become an increasingly affordable ingredient for poultry producers. |
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