Iranian Journal of animal Science

Iranian Journal of animal Science

Evaluation of Nutritional efficiency of encapsulated fish oil ca-salts in vitro and in vivo

Document Type : Research Paper

Authors
Hamed Khalilvandi-Behroozyar 1
Mehdi Dehghan-Banadaky 2
Rasoul Pirmohammadi 3
Behzad AsadnEjad 4
1 Assistant Professor, Faculty of Agriculture, Urmia University, Urmia, Iran
2 Professor, University College of Agriculture & Natural Recouces, University of Tehran, Karaj, Iran
3 Professor, Faculty of Agriculture, Urmia University, Urmia, Iran
4 Ph.D. Candidate, Faculty of Agriculture, Urmia University, Urmia, Iran
10.22059/ijas.2018.242888.653563
Abstract
In this research encapsulated fish oil Ca-salts were produced by using a saturated FA containing material and evaluated. Nutrient content and FA profiles of produced supplements were determined and ruminal biohydrogenation and oil releasing were examined in vitro. Additionally, in a complementary in vivo experiment, effects of dietary inclusion of fish oil, ca-salts and encapsulated ca-salts on nutrient digestibility and ruminal paramerters were evaluated using three rumen fistulated Holstein cows. Encapsulation of Ca-Salts increased protection efficiency of PUFA against ruminal biohydrogenation. Encapsulated ca-salts with 10 % of wall material (weight basis) had lower biohydrogenation afer 48-h in vitro incubation (P˂ 0.05). Encapsulation of ca-salts decreased rumen oil release but oil release in other simulated media or total tract oil release were not affected by encapsulation (P˃ 0.05). Protected supplements increased nutrient digestibility compared with fish oil (P˂ 0.05). Non-encapsulated fish oil decreased acetate and rumen N-NH3 concentration as well as protozoa `population, but increased propionic acid concentration (P˂0.05). Encapsulation of Ca-Salt did not change rumen parameters (P˃ 0.05). According to the results, it can be concluded that encapsulation of ca-salts increased protection of PUFA against ruminal biohydrogenation without worse effects on rumen parameters. Encapsulation with 10 % of wall material (weight basis) can be presented as the best treatment according to chemical composition, fatty acid profiles, rumen biohydrogenation and oil release results.
Keywords
Encapsulation
Omega-3
PUFA
Ruminal protection
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Iranian Journal of animal Science
Volume 48, Issue 4 - Serial Number 4
Winter 2018
Pages 505-521

  • Receive Date 03 October 2017
  • Revise Date 11 January 2018
  • Accept Date 11 January 2018