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Iowa State University

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Food Science and Human Nutrition Publications

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Short-Term Exposure To Heat Stress Attenuates Appetite And Intestinal Integrity In Growing Pigs 1, S. C. Pearce, M. V. Sanz-Fernandez, James Hollis, Lance H. Baumgard, Nicholas K. Gabler Dec 2014

Short-Term Exposure To Heat Stress Attenuates Appetite And Intestinal Integrity In Growing Pigs 1, S. C. Pearce, M. V. Sanz-Fernandez, James Hollis, Lance H. Baumgard, Nicholas K. Gabler

Food Science and Human Nutrition Publications

Acute heat stress (HS) and heat stroke can be detrimental to the health, well-being, and performance of mammals such as swine. Therefore, our objective was to chronologically characterize how a growing pig perceives and initially copes with a severe heat load. Crossbred gilts (n=32; 63.8±2.9 kg) were subjected to HS conditions (37°C and 40% humidity) with ad libitum intake for 0, 2, 4, or 6 h (n=8/time point). Rectal temperature (Tr), respiration rates (RR), and feed intake were determined every 2 h. Pigs were euthanized at each time point and fresh ileum and ...


Dietary Oil Composition Differentially Modulates Intestinal Endotoxin Transport And Postprandial Endotoxemia, Venkatesh Mani, James H. Hollis, Nicholas K. Gabler Jan 2013

Dietary Oil Composition Differentially Modulates Intestinal Endotoxin Transport And Postprandial Endotoxemia, Venkatesh Mani, James H. Hollis, Nicholas K. Gabler

Food Science and Human Nutrition Publications

Background: Intestinal derived endotoxin and the subsequent endotoxemia can be considered major predisposing factors for diseases such as atherosclerosis, sepsis, obesity and diabetes. Dietary fat has been shown to increase postprandial endotoxemia. Therefore, the aim of this study was to assess the effects of different dietary oils on intestinal endotoxin transport and postprandial endotoxemia using swine as a model. We hypothesized that oils rich in saturated fatty acids (SFA) would augment, while oils rich in n-3 polyunsaturated fatty acids (PUFA) would attenuate intestinal endotoxin transport and circulating concentrations.

Methods: Postprandial endotoxemia was measured in twenty four pigs following a porridge ...


Ingredient Selection For Plastic Composite Supports For L-(+)-Lactic Acid Biofilm Fermentation By Lactobacillus Casei Subsp. Rhamnosus, K.L. Ho, A. L. Pometto Iii, P. N. Hinz, James S. Dickson, A. Demirci Jul 1997

Ingredient Selection For Plastic Composite Supports For L-(+)-Lactic Acid Biofilm Fermentation By Lactobacillus Casei Subsp. Rhamnosus, K.L. Ho, A. L. Pometto Iii, P. N. Hinz, James S. Dickson, A. Demirci

Food Science and Human Nutrition Publications

Plastic composite supports containing 50% agricultural products (oat hulls, soybean hulls, yeast extract, soybean flour, dried bovine erythrocytes, bovine albumin, and/or mineral salts) and 50% (wt/wt) polypropylene were produced by high-temperature twin-screw extrusion. The research employed two half sets of a five-factorial fractional design (2(5 - 1)) to evaluate the effects of different agricultural components on the properties of the plastic composite supports and to select the best plastic composite support formulation for lactic acid fermentation. The biofilm population was affected by the contact angle and relative hydrophobicity of the supports (r = 0.79 to 0.82). Lactic ...