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Amino acid digestibility in low-fat distillers dried grains with solubles fed to growing pigs

Journal of Animal Science and Biotechnology 2014年第4期5卷 414-420页

作者： Shelby Marie Curry Diego Mario David Labadan Navarro Ferdinando Nielsen almeid. juliana abranches soares almeid. Hans Henrik Stein Department of Animal Sciences University of Illinois

The objective of this experiment was to determine the standardized ileal digestibility（SID） of amino acids（AA） in 3sources of distillers dried grains with solubles（DDGS） with different concentrations of *** growing barrows（initial body weight：76.1 ± 6.2 kg） were randomly allotted to a replicated 6×4 Youden square design with 6 diets and 4 *** fat content of the 3 sources of DDGS were 11.5,7.5,and 6.9%*** contained 60%DDGS and fat concentration of the diets were 7.5,52,and 5.2%,*** additional diets containing the 2sources of DDGS with 75 and 6.9%fat were also formulated,and corn oil was added to these diets to increase the concentration of fat in the diets to levels that were calculated to be similar to the diet containing conventional DDGS with 11.5%fat.A N-free diet was also formulated to calculate endogenous losses of crude protein（CP） and AA from the *** were fed experimental diets during four 7-d *** first 5 d of each period were an adaptation period and ileal digesta were collected on d 6 and 7 of each *** apparent ileal digestibililty（AID） and SID of CP and all indispensable AA,except AID Pro and SID of Trp,were greater（P 〈 0.01） in conventional DDGS than in the 2 sources of DDGS with reduced *** oil to the diets containing the 2 sources of DDGS with reduced fat did not consistently increase SID of *** conclusion,conventional DDGS has greater SID values for most AA compared with DDGS that contains less fat and inclusion of additional oil to diets containing low-fat DDGS does not increase AID or SID of *** lower AA digestibility in low-fat DDGS could not be overcome by the inclusion of additional fat to the diets.

关键词： Amino acid digestibility Distillers dried grains with solubles Pigs

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Escherichia coli challenge and one type of smectite alter intestinal barrier of pigs

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Journal of Animal Science and Biotechnology 2014年第2期5卷 173-180页

作者： juliana abranches soares almeid. Yanhong Liu Minho Song Jeong Jae Lee H Rex Gaskins Carol Wolfgang Maddox Orlando Osuna James Eugene Pettigrew Department of Animal Sciences University of IllinoisUrbana 61801USA Department of Animal Science and Biotechnology Chungnam National UniversityDaejeonSouth Korea Department of Pathobiology University of IllinoisUrbana 61801 USA Milwhite Inc.BrownsvilleTXUSA

An experiment was conducted to determine how an E. coil challenge and dietary clays affect the intestinal barrier of pigs. Two groups of 32 pigs （initial BW： 6.9 ± 1.0 kg） were distributed in a 2 x 4 factorial arrangement of a randomized complete block design （2 challenge treatments： sham or E. coil, and 4 dietary treatments： control, 0.3% smectite A, 0.3% smectite B and 0.3% zeolite）, with 8 replicates total. Diarrhea score, growth performance, goblet cell size and number, bacterial translocation from intestinal lumen to lymph nodes, intestinal morphology, and relative amounts of sulfo and sialo mucins were measured. The E. coli challenge reduced performance, increased goblet cell size and number in the ileum, increased bacterial translocation from the intestinal lumen to the lymph nodes, and increased ileal crypt depth. One of the clays （smectite A） tended to increase goblet cell size in ileum, which may indicate enhanced protection. In conclusion, E. coli infection degrades intestinal barrier integrity but smectite A may enhance it.

关键词： Barrier function E.coli Pigs Smectite Zeolite

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