Petfood Forum Guide - 2019 - 13

See the separate Schedule of Events and Floor Plan brochure for times for the
student paper oral presentations.

science and management from Kansas State University. She has collaborated with
industry companies for Petfood Workshop presentations and has presented scholarly work at ASAS-CSAS Annual Meeting & Trade Shows (2017 and 2018), 18th
Annual AAVN Clinical Nutrition & Research Symposium and Petfood Forum 2018.
11:20-11:30 a.m. Effects of fiber source on fermentation
products of dog fecal inoculum
Dietary fibers can benefit dog and cat gut health.
Not all fibers are similar. Their extent of fermentation and the quantity and proportion of postbiotics
differ. Renan Antunes Donadelli's poster will focus
on an in vitro study where Miscanthus grass, beet
pulp, cellulose, sorghum bran and pea fiber were
inoculated with anaerobic buffered dog feces and
analyzed at incremental times over 24 hours.
Beet pulp was the most fermented fiber source,
followed by sorghum bran and pea fiber. Miscanthus grass and cellulose were the
least fermentable. Sorghum bran yielded higher concentrations of branched chain
fatty acids, which may be an indication of indigestible proteins in this fiber source.
Donadelli is a Ph.D. student working on his last semester in the Pet Food Program
at Kansas State University. He has a bachelor's degree in agronomy engineering
(focus in use of water in agricultural systems) and a master's degree in animal
science and pastures (aquaculture nutrition and economic evaluation of diets and
ingredients for native fish species - dourado).
Besides his academic duties, he was the vice president of the graduate student
committee within the Department of Animal Science and Pastures at College of
Agriculture "Luiz de Queiroz" at the University of São Paulo and helped Jose Cyrino,
Ph.D., to manage the wet and analytical laboratories. He started working on his
Ph.D. program under Greg Aldrich, Ph.D., in the spring semester of 2015. His
research focuses on the effects of Miscanthus grass in dog and cat food production,
nutrient utilization by dogs and cats, cat hairball management and fermentation end
products using a dog fecal inoculum. In addition, he helps Aldrich manage his laboratories (for food production and sample analysis). He presented some of his work in
industry and scientific conferences and was awarded for his accomplishments.
11:30-11:40 a.m. Evaluation of white and red sorghum flour as
potential ingredients for extruded crisp
production
Sorghum and pet food are both considered among
the top five growth sectors for the Kansas economy. This presents an opportunity to connect these
two sectors by increasing sorghum marketing opportunities within the pet food industry. Currently,
there is only incidental inclusion of sorghum in pet
treats. Sorghum crisps as a value-added ingredient

Industry

produced through extrusion may be a method to include this grain in treats.
Thus, the aim of Julia Guazzelli Pezzali's study was to determine the necessary
extrusion parameters for white and sorghum flour necessary to create a consistent
crisp. White and red sorghum were obtained from local farmers and milled at
Hal Ross Flour Mill. White and red sorghum flour (WSF and RSF, respectively)
were extruded in a pilot scale single screw extruder over three days to achieve
replication. After extrusion, the product was dried in a forced air dryer at 87 C for
seven minutes.
Processing parameters and product out of the extruder and dryer were collected
every 15 minutes for each replicate. Crisp macrostructure was analyzed using a
caliper and hardness and crispness were obtained using a TA-XT2 Texture Analyzer.
Data was analyzed using statistical software. Extrusion of WSF and RSF was
successfully achieved during the three days of production. No differences were
observed in the processing parameters between WSF and RSF. Specific mechanical energy, in-barrel moisture, as well as product bulk density were similar for
WSF and RSF during extrusion. Consequently, crisps macrostructure and sectional
expansion index were also similar between treatments. There were also no differences in hardness and crispness between WSF and RSF. In conclusion, production
of white and red sorghum crisps from extrusion processing was successfully
accomplished with no differences between sorghum varieties.
Pezzali is originally from Xanxere, Brazil, where she earned her DVM from Federal
University of Rio Grande do Sul (UFRGS) with a focus on animal nutrition. She
is currently pursuing her master's degree at Kansas State University under the
supervision of Greg Aldrich, Ph.D., with a focus on pet food processing. She plans
to pursue a career in the pet food industry, developing new products that optimize
processing conditions and nutrition.

WEDNESDAY, MAY 1
ORAL PRESENTATIONS
9:50-10:05 a.m. Digestibility, fecal characteristics and blood
parameters of adult dogs fed high-fat diets
Due to consumer demand for less processed pet food,
there is a need for decreased carbohydrate inclusion.
However, another ingredient is needed in order to
meet energy demands. Fats and oils are added to
diets to increase caloric density, but little information
is known on the effects of high-fat diets with low
levels of starch on canine health. The objective of
Logan R. Kilburn's study was to evaluate four diets
with increasing fat levels fed to adult dogs. In short,
the increase of dietary fat improved digestibility, did not disrupt fecal characteristics and
maintained the health status of each dog.
Kilburn is a master's student at Iowa State University working with Mariana

2019 Petfood Forum

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Petfood Forum Guide - 2019

Table of Contents for the Digital Edition of Petfood Forum Guide - 2019

Petfood Forum Guide - 2019
Topics and speakers
Student research abstracts
Exhibitor profiles
Sponsors
Corporate profiles
Petfood Forum Guide - 2019 - Cover1A
Petfood Forum Guide - 2019 - Cover2A
Petfood Forum Guide - 2019 - 1A
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Petfood Forum Guide - 2019 - Cover4A
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Petfood Forum Guide - 2019 - Topics and speakers
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Petfood Forum Guide - 2019 - Student research abstracts
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Petfood Forum Guide - 2019 - Corporate profiles
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