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

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.

Yolk Fatty Acid Profile and Amino Acid Composition in Eggs from Hens Supplemented with ß-Hydroxy-ß-Methylbutyrate

“…Additionally, these supplements raised MUFA and lowered PUFA content in leg muscle, resulting in a decreased PUFA-to-SFA ratio. This aligns with findings in studies on animals other than poultry, suggesting the potential for nutritional modifications of fatty acids in animal products [57][58][59][60]. Changes in the muscle fatty acid metabolism might extend to affect the fatty acid profiles of eggs, although this has not been directly confirmed in either of those studies.…”

Selected minerals in skeletal muscles of fallow deer (Dama dama) and red deer (Cervus elaphus) farmed in the organic system - preliminary study

“…The differences in the content of macro-and microminerals between the deer species can be associated with their different diets. The effect of the muscle type on meat quality has been well documented [Holman et al 2021, Nogalski et al 2022.…”

“…animal species, sex, and age as well as environmental conditions. Moreover, the concentration of minerals varies between the type of muscles, the composition of muscle fibers, and physical activity of the animal [Holman et al 2021, Nogalski et al 2022.…”

Effects of Rearing System and Fattening Intensity on the Chemical Composition, Physicochemical Properties and Sensory Attributes of Meat from Young Crossbred (Holstein-Friesian × Hereford) Bulls

“…The fatty acids were determined by gas chromatography, using the Varian CP 3800 system (Varian, Palo Alto, CA, USA). All the details of the analysis were provided in the paper by Nogalski et al [ 24 ]. Saturated fatty acids (SFAs), unsaturated fatty acids (UFAs)—including monounsaturated fatty acids (MUFAs)—and polyunsaturated fatty acids (PUFAs) were reported as the relative percentage of total fatty acids along with the following calculated ratios: UFA/SFA, PUFA/SFA, and n -6/ n -3 PUFA.…”

“…The minerals such as potassium, sodium, magnesium, zinc, and iron were determined using an atomic absorption spectrometer (Candela, Warsaw, Poland) according to the method described in Nogalski et al [ 24 ].…”