TITLE:
Analytical Evaluation of Omega 3 Fatty Acids Imbedded in Hydrophobic Starch in the Rumen
AUTHORS:
Malcolm Ballard
KEYWORDS:
Encapsulation Omega-3, Rumen-Protection
JOURNAL NAME:
Open Journal of Animal Sciences,
Vol.8 No.4,
October
23,
2018
ABSTRACT: Two experiments were conducted to assess the value
of hydrophobic starch as a method to encapsulate a supplement consisting of
refined fish oil intended for use as a feed supplement for ruminant animals. In
Study 1, the product was incubated in
vitro for 24 hours. The entire media was analyzed to determine fatty acid
composition. In Study 2, the test material was incubated for 0, 2, 4, 6, 8, 10,
12 and 24 hours in order to determine rate of loss of dry matter, as well as
the fatty acid profile of the dry matter remaining at 24 hours. Results from
Study 1 indicated that 61.1 % of the eicosapentaenoic acid (C20:5) and 75.3%
docosahexaenoic acid (C22:6) were still intact after the 24 hour incubation
period. In Study 2, 39.1% of the test material was solubilized in the 24 hour
period. However, the losses in C20:5 and C22:6 fatty acids were less (25.32%
and 27.90% respectively) indicating that the majority of the test product was
protected against biohydrogenation. It was concluded that hydrophobic starch
can be used to ruminally protected fish oil and to deliver C20:5 and C22:6
fatty acids past the rumen.