Effect of microencapsulated fish oil on blood metabolites and rumen fatty acids in Sannan Lactating dairy goat

Document Type : Ruminant Nutrition

Authors

• Rashid Safari ¹
• Reza Valizadeh ²
• Rasool Kadkhodaei ³
• Abdolmansour Tahmasebi ⁴
• Abbas Ali Naserian ²
• Einollah Abdi Ghezeljeh ⁵

¹ Department of Animal Science, Ahar Faculty of Agriculture and Natural Resources, University of Tabriz, Tabriz, Iran

² Department of Animal Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran

³ Department of Food Nanotechnology, Ahar Institute of Food Science and Industry

⁴ Dept. of Animal Science, College of Agri. Ferdowsi University of Mahhad, Mashhad, Iran

⁵ Department of Animal Sciences, Ahar Faculty of Agriculture and Natural Resources, University of Tabriz, Tabriz, Iran

10.22067/ijasr.v6i3.43296

Abstract

To estimate the effect of microencapsulated fish oil on blood metabolites, rumen and blood plasma fatty acids concentrations twelve Sannan dairy goats with 30 ± 5 days in milk (DIM) were allocated to 3 treatments in a 3×2 change over design with 2 periods of 30 days. Treatments were: 1) the control (without fish oil), 2) microencapsulated fish oil (2% fish oil capsulated in 6% treated whey protein concentrate, 3) fish oil (2% fish oil and 6% whey protein concentrate). Concentration of C18:0 in the rumen for microencapsulated fish oil decreased significantly in comparison with the control. The same manner was observed in goat’s blood plasma for microencapsulated fish oil. Microencapsulated fish oil led to a significant increase in polyunsaturated fatty acids concentration, hence concentration of C18:3, C20:5 EPA, C22:5 DPA and C22:6 DHA as a source of ω3 fatty acids increased 10, 20, 10 and 13 folds in comparison with the control and 10, 20, 2 and 2.5 folds in comparison with the fish oil treatment, respectively. HDL concentration in protected fish oil was significantly higher than that for the control and unprotected fish oil treatments. It seems that fish oil supplementation caused significant changes in blood fatty acids composition of ruminants as well as ω3 fatty acids in their products. Significant increase of ω3 fatty acids in blood plasma of microencapsulated fish oil treatment showed the protective effect of capsulation against rumen microbial biohydrogenation.

Keywords

• Microencapsulation
• Fish oil
• ω-3fatty acid
• Blood metabolites

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