Camelina sativa affects the fatty acid contents in M. longissimus muscle of lambs

Abstract

Ruminant diets supplemented with different sources of unsaturated fatty acids (UFA) may be effective for modulating the rumen biohydrogenation process as well as for de novo fatty acid synthesis in animal tissues. Such a supplementation may consequently improve the proportion of fatty acids in animal products. The obtained effect in animal products depends on the quantity and composition of dietary fat; particularly UFAs. This study illustrates the effect of diets in which two doses of Camelina sativa (100 and 200 g in concentrate dry matter, respectively) were given as the primary sources of UFAs. The study shows the effect on the fatty acid contents in longissimus dorsi muscle of lambs. Diets containing C. sativa led to higher contents of either C18:2 c9t11 or C18:2 t10c12 isomers in lamb muscle as well as an increase in vaccenic acid (VA), arachidonic acid (AA), eicosapentaenoic acid (EPA) and docosapentaenoic acid (DPA) contents. The results also indicated that the addition of C. sativa leads to a higher content of linoleic, oleic and alpha linolenic acids in lamb muscles. Practical applications: The results of this study showed favorable changes in the UFA contents in longissimus dorsi muscle of lambs. The changes were obtained by supplementing the diets of the lambs with C. sativa cake, the plant cultivated as a biodiesel source. Inclusion of C. sativa cake in the concentrate dry matter for lambs may allow animal products to obtain the nutritionally desired fatty acids. Consumption of enriched products may act as chemopreventive agents and counteract the development of some human diseases.

Fatty acid profile of Turkish Bandirma Crossbreed, Karacabey Merino Multiplier and Karacabey Merino Nucleus lambs raised in the same intensive production system

“…Additionally, Santos-Silva et al (2002) showed that the proportion of CLA present in intramuscular fat was dependent on feeding system. While some researchers reported that CLA rates are higher than the rates found in this study (Garcia et al, 2008;Cieslak et al, 2013;Villalobos-Villalobos et al, 2014), others have indicated lower CLA rate in lamb genotypes (Santos-Silva et al, 2002;Yarali et al, 2014). Linoleic acid (n-6, C18:2) predominates among the PUFAs.…”

“…Likewise, the proportion of conjugated linoleic acid (CLA) was also highest in KMM lambs (Table 2). Cieslak et al (2013) reported that the higher the conversion of CLA in muscle of lambs was presumably because of the conversion of vaccenic acid to CLA, by the enzymatic activity of 9 -desaturase. Additionally, Santos-Silva et al (2002) showed that the proportion of CLA present in intramuscular fat was dependent on feeding system.…”

“…The characteristics of the fat from lamb carcasses primarily depend upon the type of fatty acids (Cieslak et al, 2013). Meat quality and fatty acid composition of muscle lipid tissue of lamb may be influenced by different factors such as slaughter weight (Yakan and Unal, 2010;Landim et al, 2011) and sex (Tejeda et al, 2008).…”

Intramuscular fatty acid profile of feedlot lambs fed concentrates with alternative ingredients

“…However, less 16:0 was desaturated to cis-9 16:1 in the FIB treatment (P<0.05) compared with the other treatments (Table 2). Neither Lanza et al (2011) nor Cieslak et al (2013) observed changes on 12:0, 14:0, 16:0 and cis-9 16:1 concentrations in the IMF of lambs fed diets where camelina cake partially replaced rapeseed and soybean meal.…”

“…Some studies have reported the effects of replacing soybean meal with legume seeds on the intramuscular FA profile of lambs (Lanza et al, 2011;Scerra et al, 2011). The effects of replacing conventional protein sources by camelina cake or camelina seeds on the intramuscular FA profile of lambs were reported by Noci et al (2011) and Cieslak et al (2013), but no studies have dealt with the effects of solvent-extracted camelina meal. Solvent-extracted camelina meal has a lower fat content than camelina cake (3.0 vs. 13.6%).…”