Linseed-based diets for sheep. 2. Performance and chemical composition of meat and liver

Abstract

The effects of dietary linseed cultivars, traditional (Opal, Omega) or the new Linola cultivar with an increased content of linoleic acid, on the performance and chemical composition of lamb meat and liver were investigated. The animals were fed meadow hay and concentrate. The control group received no linseed in concentrate, whereas the experimental groups received 10% crushed linseed of different cultivars. There was no significant effect of linseed, irrespective of cultivar, on daily weight gains of the lambs, feed conversion, dressing percentage and chemical composition of leg muscle and liver. However, significant (PO.05) changes were shown in the fatty acid profile of meat and liver.

Nutritional Enhancement of Health Beneficial Omega-3 Long-Chain Polyunsaturated Fatty Acids in the Muscle, Liver, Kidney, and Heart of Tattykeel Australian White MARGRA Lambs Fed Pellets Fortified with Omega-3 Oil in a Feedlot System

“…The major synthesis pathway of the CLA isomer, rumenic acid, in the tissues of ruminants is primarily from the biohydrogenation of ALA into vaccenic acid (C18:1n-7) catalyzed by reductase enzymes [76,77]. The variation patterns and ranges in liver fatty acid profiles in the present study were similar to previously reported findings [78][79][80][81][82][83]. The liver has also been reported to have a high nutrient content of essential amino acids, fatty acids, iron, zinc, magnesium, selenium, calcium, vitamins B1, B6, B12, and folic acid [84,85] and may explain why duck liver attracts a price premium and is consumed in France [86].…”

Effect of ground flaxseed on the carcass characteristics of Karadi male lambs

“…These results agree with those reported by (37) when lambs fed diet supplemented with linseed oil and mineral bioplex. Similar findings were observed by many other reports (32,38,39). The effect of ground flaxseed GF supplementation on rib eye area and fat thickness which are presented in table 3.…”

“…These results might be caused by increases in the concentration of free amino acids, glutamic acid, methionine, and α-AAA, and peptides, anserine and carnosine, and their complex reactions. Some studies have shown that carcass traits under way to increase the concentration of unsaturated fatty acids (UFA) using vegetable or fish oil supplements in feeds and to reduce the level of cholesterol in animal products through appropriate nutrition: (30), eggs (31) and meat (32). Several feed strategies have been tested to increase the n-3 UFA content of lamb meat such as fish oil used in the past or more recently vegetable sources like linseed.…”

Evaluation of carcass and meat quality in native wrzos�wka lambs fed linseed-supplemented diet

“…Borowiec i wsp. [5] nie potwierdzili statystycznie istotnego wpływu skarmiania mieszanek z 10-procentowym udziałem nasion lnu różnych odmian na przyrosty masy ciała jagniąt, wykorzystanie paszy, wydajność rzeźną i skład chemiczny mięsa. Jakość mięsa W badaniach własnych nie zaobserwowano wpływu uzupełnienia mieszanki treściwej nasionami lnu w ilości 5 % na podstawowy skład chemiczny mięsa (tab.…”

“…W badaniach przeprowadzonych przez Borowca i wsp. [5] oraz Micka i wsp. [11], dodatek nasion lnu spowodował wzrost sumy nienasyconych kwasów tłuszczowych (UFA) mięsa jagniąt w grupach doświadczalnych.…”