Study provides nutritional information on oilseed crop for use in pig diets

Dec 11, 2013

Long considered a weed in North America, Camelina sativa is increasingly valued as an oilseed crop.

Researchers at the University of Illinois are now studying its when used as part of weanling pigs' diets.

When oil is extracted from the seeds, using either solvent extraction or expeller pressing, the oil is then used in fuel production. The defatted meal that is produced during this process is high in protein and may be fed to livestock, but there is very little knowledge about the nutritional value of camelina meal when fed to pigs, said Hans Stein, a U of I professor of animal sciences.

"Camelina seeds and expellers have been evaluated for use in poultry and dairy cattle diets, but to our knowledge, the nutritional values of these ingredients have not been studied in pigs," he said. "This lack of knowledge limits the use of camelina products in diets fed to pigs so we wanted to determine the digestibility of in these ingredients."

To determine amino acid digestibility values, Stein and his team fed growing pigs diets containing one of five different camelina products. They tested camelina seeds from two different sources as well as camelina expellers from three different sources. The camelina products were compared with each other and with canola meal.

The digestibility of crude protein and most amino acids in two sources of camelina expellers did not differ from that of canola meal whereas the third source had lower digestibility values. Digestibility values in both sources of camelina seeds were less than in canola meal.

Stein said that the variation in digestibility among the sources of camelina expellers might be due to genetic differences between the or differences in the oil extraction procedures. "However, amino acid digestibility in two of the sources of camelina expellers was comparable to that of canola meal, which indicates that camelina expellers may be included in diets fed to ," he explained.

The camelina expellers studied were cold pressed and contained greater levels of trypsin inhibitors than canola meal. Amino acid digestibility in camelina products might be improved by heat treatment, provided that heat damage is avoided.

These findings will help producers and feed companies evaluate camelina expellers for possible inclusion in pig diets. Stein said that the next steps for research would be to determine the digestible and metabolizable energy content of camelina expellers and to conduct growth performance studies.

Explore further: Researchers determine digestibility of blood products as feed in weanling pigs

More information: "Amino acid digestibility in camelina products fed to growing pigs," was recently published in the Canadian Journal of Animal Science. It was co-authored with Ferdinando Almeida of U of I, John Htoo of Evonik Industries AG, and John Thomson of Evonik Degussa Corporation. The full paper is available at pubs.aic.ca/doi/full/10.4141/cjas2012-134

add to favorites email to friend print save as pdf

Related Stories

Replacing soybean meal in pig diets

Feb 28, 2013

Canola, cottonseed, and sunflower products can replace soybean meal in diets fed to pigs, but they contain less protein and energy. To determine if it makes economic sense to use them, producers need to know the concentrations ...

Recommended for you

Male monkey filmed caring for dying mate (w/ Video)

Apr 18, 2014

(Phys.org) —The incident was captured by Dr Bruna Bezerra and colleagues in the Atlantic Forest in the Northeast of Brazil.  Dr Bezerra is a Research Associate at the University of Bristol and a Professor ...

Orchid named after UC Riverside researcher

Apr 17, 2014

One day about eight years ago, Katia Silvera, a postdoctoral scholar at the University of California, Riverside, and her father were on a field trip in a mountainous area in central Panama when they stumbled ...

In sex-reversed cave insects, females have the penises

Apr 17, 2014

Researchers reporting in the Cell Press journal Current Biology on April 17 have discovered little-known cave insects with rather novel sex lives. The Brazilian insects, which represent four distinct but re ...

Fear of the cuckoo mafia

Apr 17, 2014

If a restaurant owner fails to pay the protection money demanded of him, he can expect his premises to be trashed. Warnings like these are seldom required, however, as fear of the consequences is enough to ...

User comments : 0

More news stories

Biologists help solve fungi mysteries

(Phys.org) —A new genetic analysis revealing the previously unknown biodiversity and distribution of thousands of fungi in North America might also reveal a previously underappreciated contributor to climate ...

Making graphene in your kitchen

Graphene has been touted as a wonder material—the world's thinnest substance, but super-strong. Now scientists say it is so easy to make you could produce some in your kitchen.