Fatty Acid Profile of Intramuscular Fat in the Longissimus Lumborum and Semimembranosus Muscles of Bulls Fed Diets Based on Virginia Fanpetals, Grass and Maize Silages

Zenon Nogalski,Paulina Pogorzelska-Przybyłek,Monika Modzelewska-Kapituła,Martyna Momot,Monika Sobczuk-Szul

doi:10.2478/aoas-2021-0023

Zenon Nogalski, Paulina Pogorzelska-Przybyłek + Show 3 more

Open Access

https://doi.org/10.2478/aoas-2021-0023

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Abstract

Abstract The aim of this study was to determine the effect of Virginia fanpetals (Sida hermaphrodita) silage on the fatty acid profile and the content of selected nutrients and vitamins in the Longissimus lumborum (LL) and Semimembranosus (SM) muscles of young bulls. Forty Polish Holstein-Friesian bulls aged 16 months were assigned to four dietary treatments (n=10) and were fed different types of silage during a 7-month fattening period. The proportion (g/kg dry matter) of silage in the diets was as follows: (1) grass silage (GS) (600); (2) Virginia fanpetals silage (VFS) (600); (3) VFS (300) and GS (300); and (4) VFS (300) and maize silage (MS) (300). Silage was supplemented with concentrate at 400 g/kg DM in each diet. The animals were slaughtered at the end of the fattening period. The intramuscular fat (IMF) of bulls fed GS had the highest (P<0.05) concentrations of n-3 polyunsaturated fatty acids (PUFAs) and linolenic acid (LNA), whereas the IMF of bulls receiving GS and VFS was characterized by the highest proportion of MUFAs, mostly oleic acid (C18:1 cis 9). In comparison with the LL muscle, the SM muscle contained less IMF (by 40%) with a more nutritionally desirable profile. The SM muscle was characterized by a more desirable mineral composition and a higher concentration of α-tocopherol.

Highlights

Meat is an important component of the human diet as a source of nutrients, vitamins, minerals and essential fatty acids (Pereira and Vicente, 2013)
Fat cover scores varied across the dietary treatments, and they were higher in Virginia fanpetals silage (VFS)+maize silage (MS) bulls compared with VFS bulls (P
The intramuscular fat (IMF) extracted from the muscles of bulls fed VFS+grass silage (GS) contained less (P

Summary

Introduction

Meat is an important component of the human diet as a source of nutrients, vitamins, minerals and essential fatty acids (Pereira and Vicente, 2013). These biologically active substances are known to have antineoplastic antioxidant, immune-boosting and antibacterial properties (Decker et al, 2000). High dietary intake of saturated fatty acids (SFAs) has been associated with elevated serum levels of total and low-density lipoprotein (LDL) cholesterol, which is the risk factor for cardiovascular disease (Siri-Tarino et al, 2010) For this reason, animal products are criticized on account of their high SFA content, and they are labeled as harmful to health (Wood et al, 2008). The plant could be suitable for forage production due to its high yield potential, resistance to lodging and freezing, low soil nutrient requirements, and high drought tolerance (Franzaring et al, 2014)

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