The Utilization of Dietary Fiber and Its Effects on The Utilization of Other Dietary Components by Swine
Frank, George Robert
This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.
Permalink
https://hdl.handle.net/2142/70000
Description
Title
The Utilization of Dietary Fiber and Its Effects on The Utilization of Other Dietary Components by Swine
Author(s)
Frank, George Robert
Issue Date
1982
Department of Study
Animal Sciences
Discipline
Animal Sciences
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Agriculture, Animal Culture and Nutrition
Abstract
The utilization of dietary fiber and its effects on the utilization of dietary dry matter (DM), nitrogen (N), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose (H) and digestible energy (DE) by growing swine. For weanling pigs, fecal N excretion was increased and N retention was decreased by the addition of either of three commercial cellulose products to a 15% cornstarch-casein diet. Cellulose additions to a 9% CP cornstarch-casein diet had no significant effect on N excretion or retention. Pigs fed the 9% CP diets digested only half as much NDF as pigs fed the 15% CP diets. These results suggest a relationship between the level of dietary CP and the extent of fiber digestion which also influences the fecal N excretion of weanling pigs.
A feeding trial was conducted to evaluate the effects of three levels of dietary fiber on pig performance. Average daily gain and gain/feed ratio were decreased while average daily feed intake was increased with increasing fiber levels. Average daily DE intake tended to decrease with increasing fiber levels suggesting that pig performance was depressed due to the inability of pigs fed the fiber diets to maintain similar DE intakes. Pigs were selected on the basis of average daily gain to represent pigs of above average, average, and below average performance within each level of dietary fiber. A digestion trial was conducted to determine if the previous performance of these pigs could be related to the digestibilities of dietary components. Dietary DE and the digestibilities of DM, N, NDF and ADF were decreased with increasing fiber levels. Regardless of diet, no significant differences in any of these criteria were observed among pigs of different previous performance.
Growing pigs were fed a corn-soybean meal diet to evaluate the effects of supplemental intakes of either 0, 7.5 or 15 g corn cobs/100 g basal diet on the digestibilities of the major dietary components relative to the concentrations of glucose, ammonia, urea and VFAs in portal and vena cava plasma. The digestibilities of total dietary DM, N, NDF, ADF and H were decreased with increasing intakes of corn cobs due to the poor digestibilities of these components contributed by corn cobs. Although pigs consuming corn cobs digested about 20 g more NDF per day than did the control pigs, the concentrations of VFAs in the portal plasma were similar regardless of treatment. These results indicate tht the VFAs produced in and absorbed from the hindgut as much as an estimated 18-20% of the maintenance net energy requirement of growing pigs fed corn-soybean meal diets.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
