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Article published the June 16, 2017
Introduction Feed represents between 60 and 70 % of the total cost of pork production in modern capital-intensive systems. Within feed, energy alone may represent 50 % or more of the total cost [1]. Carbon-containing compounds in the feed, including fat, carbohydrate and protein, release energy when oxidized. Such energy is required for such processes as the biosynthesis of proteins, bones and li ...
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Article published the June 9, 2014
The economic losses caused by Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) infection are estimated to cost the US swine industry more than $640 million annually (USDA, 2008). While significant advances have been made through research efforts to enhance our understanding of PRRSV at the animal health, immunological and genomic level, this disease st ...
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This member gave a presentation on April 1, 2014
At the following event:
INSPIRE- International Non-Starch Polysaccharide Forum 2014
Article published the September 12, 2013
INTRODUCTION Iowa leads the nation in corn and ethanol production. For corn-based ethanol plants, a primary co-product of the process is distillers dried grains with solubles (DDGS). DDGS have been reported to contain high levels of digestible energy and metabolizable energy, digestible amino acids, and available phosphorus (Shurson et al., 2003; Honeyman et al., 2007). Generally, DDGS have been ...
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This member gave a presentation on June 27, 2013
At the following event:
Iowa Swine Day
Article published the June 10, 2013
Introduction In the past few decades, the American pig industry has seen a steady increase in market weights. This trend is driven by economic factors at the packing plant, where fixed costs can be allocated over more pounds of pork sold per pig, and at the farm, where sow and other fixed costs can be spread over more pounds of pork sold. Unfortunately, there is very little empirical data explai ...
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Article published the June 10, 2013
Introduction It is estimated that feed comprises up to 75% of livestock production costs, and energy is the greatest single cost of diets in swine (Noblet et al., 1993). Energy yielding substances make up 70 to 90% of dietary DM, and carbons from these compounds are oxidized by the animal to produce energy needed to perform biochemical work, in the form of biosynthesis of protein and lipids, acti ...
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Article published the January 24, 2012
1. INTRODUCTION Much has been said and written about feed intake in the pig.  It is therefore surprising that it remains a topic of much interest to pork producers, as we appear to be continually challenged to reach a maximum, or at least an optimum, level of feed intake on a consistent basis. However, the focus on feed intake is not surprising in that it is the ultimate driver of growt ...
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News published on November 17, 2009
Dr. John Patience, from the Department of Animal Science of Iowa State University of Science and Technology, talks about "New tools to control the variability in the pork production chain". The interview was recorded at the 15th edition of ABRAVES (Brazilian Society of Swine Veterinarians), held at Uberlandia, from the 26th to the 29th of October.
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Video published on November 6, 2009
John Patience, professor at Iowa State University, talks to Engormix.com about new Tools to Manage Variability Throughout the Pork Production System at Abraves 2009, Brazil.
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Information
John F. Patience is a professor in the Department of Animal Sciences at Iowa State University, having joined the faculty in 2008. Prior to this, he was President and C.E.O. of the Prairie Swine Centre, a non-profit research and technology transfer company located in Saskatoon, Canada. He received his Ph.D. from Cornell University and B.Sc. (Agr) and M.S. degrees from the University of Guelph in animal science and animal nutrition, respectively. John is responsible for research in applied swine nutrition and as such, undertakes investigations on energy metabolism, ingredient evaluation and gene
Location:Ames, Iowa, Estados Unidos de América
Profile: Academic / scientific
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