Distillers’ Grains for Cows: Boon or Bust?
نویسنده
چکیده
The United States’, and especially Iowa’s, ethanol industry has increased dramatically resulting in millions of tons of the distillers grains co-products produced annually. For every one bushel of corn processed there is a yield of about 2.8 gallons of ethanol and about 17 to 18 pounds of distillers’ grains (DGs) on a dry basis. Although one cannot be certain of future markets, it appears that large quantities of DGs will be available to the livestock industry for many years. Will the DGs remain the same? No, as we speak many ethanol plants are changing their manufacturing techniques, extracting corn oil and other by-products, which change the nutrient content and density of the DGs.
منابع مشابه
Effects of variable sources of distillers dried grains plus solubles on milk yield and composition.
This study compared diets supplemented with distillers dried grains plus solubles originating from whiskey distilling with those from fuel alcohol production or soybean meal. Forty-eight cows in mid and early lactation were offered a different dietary treatment in each of three 28-d periods. Dietary design included three supplements at 14 or 18% CP of dietary DM, with or without blood meal. Add...
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Twelve lactating Holstein cows were utilized in a repeated switchback design to evaluate milk production and milk fat composition responses to wet corn distillers grains. Total mixed diets consisted of 31.4% corn silage, 18.4% alfalfa hay, and either 50.2% of a concentrate mix that contained mostly corn and soybean meal or 19.4% of a concentrate mix that contained mostly corn and 31.2% wet corn...
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The feeding of distillers grains to dairy cattle is nothing new; such products have been fed cattle for more than a century. The research article by Loosli et al. (1952) referenced an 1895 Vermont Agricultural Experiment Station Bulletin that reported on the feeding of distillers grains to lactating cows. In many respects, one might say that responses to feeding distillers grains today should b...
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