scholarly journals Reindeer meat – is it always tender, tasty and healthy?

Rangifer ◽  
2007 ◽  
Vol 27 (3) ◽  
pp. 71 ◽  
Author(s):  
Eva Wiklund ◽  
Gunnar Malmfors ◽  
Greg Finstad

Meat with high pH values, so called DFD (Dark, Firm, Dry meat, is a persistent quality defect foundmin all meat species. DFD shortens shelf life, especially for vacuum-packed meat and affects meat colour, tenderness and water-holding properties. High pH values in reindeer meat have been related to pre-slaughter handling stress and poor nutritional status of the animals. There are numerous reports that variation in muscle pH and glycogen content give rise to considerable variations in meat tenderness in species such as beef and lamb. In contrast, reindeer meat has been found to be extremely tender regardless of ultimate pH. This phenomenon has been related to the speed of post mortem protein degradation and the small muscle fibre size in reindeer. Previous research has demonstrated that the fatty acid composition of meat changes in response to diets. Generally, a higher proportion of long, unsaturated fatty acids were found in meat from grazing animals compared with animals fed a grain-based diet. Reindeer meat has been found to contain moderate amounts of polyunsaturated fatty acids (PUFA), especially so-called n-3 (or omega-3) PUFAs. The PUFAs are known to be susceptible to oxidation and may therefore be easily oxidized during processing by techniques like smoking and drying. A trained sensory panel concluded that meat from reindeer fed commercial feed scored higher for liverish and sweet flavours and lower for off-flavou (i.e. ‘grass’, ‘wild’ and ‘game’) compared with meat from grazing animals. Consumer preference tests on reindeer meat showed that 50 per cent of the consumers preferred meat from grazing reindeer and 50 per cent meat from pellet-fed animals. Recent reindeer meat research has included new feed mixtures using ingredients like linseed and fishmeal. Crushed linseed in the feed gave meat with a fat composition similar to that of natural pasture, which meant more PUFA than in meat from reindeer fed the normal grain-based mixture. Fishmeal used as a protein source in reindeer feed mixtures demonstrated good feed conversion and weight gain in the animals, and sensory 72 evaluation by both a trained panel and consumers did not show any negative effects on flavour attributes of the meat. The fat composition of the meat changed just slightly when comparing fish- and soybean meal, with more PUFA in the meat from fishmeal fed animals. The control group of free-ranging reindeer had significantly highest PUFA content in the meat. Our knowledge about various factors affecting reindeer meat quality has increased significantly over the last 25 years, but there is still information missing particularly regarding the interaction between production systems, slaughter handling techniques and ultimate meat quality. Renkött - är det alltid mört, gott och nyttigt?Abstract in Swedish / Sammanfattning: Kött med höga pH-värden, DFD-kött (Dark, Firm, Dry), är ett kvalitetsproblem som kan drabba kött från alla djurslag. Detta kött har dålig hållbarhet speciellt i en vakumförpackning, men andra egenskaper som köttets färg, mörhet och vattenhållande förmåga påverkas också av DFD. Höga pH-värden i renkött har visats bero på stress i samband med slakthantering och på dålig näringsstatus hos djuren. Ett flertal undersökningar på t.ex. nöt- och lammkött har rapporterat att en variation i pH-värde och glykogeninnehåll har stor betydelse för köttets mörhet. Renkött har däremot visats vara mycket mört oberoende av pH-värde, vilket har förklarats bero på en hög aktivitet av proteinnedbrytning efter slakt men också på små muskelfibrer i renköttet. Tidigare undersökningar har demonstrerat att fettsyrasammansättningen i kött förändras beroende på vad djuren äter. Allmänt gäller att i kött från betande djur finns en högre andel fleromättade fettsyror (PUFA) jämfört med djur som utfodrats med spannmålsbaserade foder. Renkött har visats ha en relativt hög andel PUFA och särskilt de sk. omega-3 PUFA. En tränad smakpanel bedömde att kött från renar som utfodrats med kommersiellt renfoder smakade mer lever och sött och hade mindre bismaker (som t.ex. gräs, vilt och ren) jämfört med kött från naturbetande renar. I en konsumentundersökning av samma typer av renkött föredrog 50 procent av konsumenterna beteskött och 50 procent föredrog kött från utfodrade renar.Den senaste forskningen har studerat nya foderblandningar där ingredienser som linfrö och fiskmjöl har utvärderats. Linfrökaka som tillsats i renpellets gav köttet en fettsammansättning som påminde om den i kött från naturbetande renar, d.v.s. köttet innehöll mer PUFA än kött från renar som utfodrats med normala pellets. I försök där fiskmjöl har använts som proteintillskott i renfoder visades ett bra foderutnyttjande och god tillväxt hos renarna och inga negativa effekter på renköttets smak kunde påvisas varken av en tränad smakpanel eller vid en konsumentundersökning. Fettsammansättningen i köttet påverkades marginellt av tillsatsen av fiskmjöl jämfört med normalfodret baserat på sojaprotein. Kött från kontrollgruppen av naturbetande renar hade det signifikant högsta innehållet av PUFA. Kunskapen om de olika faktorer som påverkar renköttets kvalitet har ökat påtagligt under de senaste 25 åren, men fortfarande saknas en del fakta när det gäller sambanden mellan produktionssystem, slakthantering och köttkvalitet.

Animals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3122
Author(s):  
Jalil Ghassemi Nejad ◽  
Bae-Hun Lee ◽  
Ji-Yung Kim ◽  
Kyung-Il Sung ◽  
Hong-Gu Lee

The effects of grazing lactating cows in mountainous areas for 12 and 24 h compared with the confined indoor system were evaluated by examining the overall milk fatty acid and cortisol. Twenty-one dairy cows were allocated to three treatment groups: (1) control (confined management system in a free-stall barn; TMR based), (2) grazing for 12 h (12hG; TMR plus grazing pasture), and (3) grazing for 24 h (24hG; pasture-based feeding system). Dry matter intake was higher in the control and 12hG groups than in the 24hG group. The yields of total milk and the 3.5% fat-corrected milk were the lowest in the 24hG group. Milk fat was the highest in the 24hG group and higher in 12hG compared with the control group. Milk protein and lactose levels were the highest in the 12hG group. The highest somatic cell count was observed in the 24hG group. The saturated fatty acid levels were higher in the control group compared with the 12hG and 24hG groups. There was no difference in overall mono-unsaturated fatty acids between 12hG and 24hG groups. Poly-unsaturated fatty acids were higher in the 12hG group compared with the control and 24hG groups. There was no difference in omega-6 (ω-6) fatty acids among the groups, and omega-3 fatty acids were higher in the 12hG group than in the control group. Milk cortisol was the highest in the 24hG group and higher in the control group compared with the 12hG group. Taken together, grazing for 12 h is advisable for farms that have access to mountainous areas to improve the milk fatty acid profile and decrease the stress levels in high-yielding Holstein lactating cows.


Author(s):  
N Kılıçalp ◽  
C Yücel

This experiment was conducted to investigate the effects of supplemented omega 3 poly unsaturated fatty acids on fertility of Karayaka sheep during the flushing period. This trial was arranged on 3-4 year old, average 55±0.5 kg live weight, 80 head Karayaka sheep were distributed completely Randomize into 4 groups. Oestrus synchronization was performed in the three groups of sheep except for control group. Experimental groups were pasture, pasture (oestrus synchronization), barley and Omega-3. Progeny yields were determined as 80 % in the control, 125 % in the pasture, 116 % in the barley and 135% in the omega-3 groups.The highest twin birth was observed in omega 3 group (44%), follwed by pasture group (33%) and barley group (24%). The results indicated that, addition of omega-3 polyunsaturated fatty acids to supplemental feeds increased fertility of Karayaka sheep.


2014 ◽  
Vol 57 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Francesco Vizzarri ◽  
Maria Nardoia ◽  
Marisa Palazzo

Abstract. Three different dietary doses of Lippia citriodora natural extract were tested in order to verify their effect on productive performance and the meat quality of intensively-reared hare (Lepus europaeus Pall.). The 240 day-trial was conducted on 20 male hares, divided into 4 homogeneous groups of 5 animals each. A control group received a basal diet without any supplementation, and the other three experimental groups received a natural extract of Lippia citriodora, titrated in verbascoside, in the following amounts: 1 g, 1.5 g and 2 g of natural extract/kg feed in the low (LNE), medium (MNE), and high natural extract (HNE) groups, respectively. Natural extract enhanced the quality of the meat: there was a significant decrease (P<0.05) in saturated fatty acids and a significant increase (P<0.05) in mono- and poly-unsaturated fatty acids. The oxidative stability of the meat improved, thus highlighting a possible link between the decrease (P<0.05) in TBARS values and an increase (P<0.05) in lipid vitamin content. The cholesterol content of the meat decreased markedly (P<0.01) after the dietary verbascoside treatment, thus improving the health benefits of the meat. These results clearly show the important role of Lippia citriodora extract, titrated in verbascoside, in improving the quality of the meat of intensively-reared hares. In addition the present paper underlines how the use of natural antioxidant in the animal feeding system may provide healthier and low-oxidized products to the final consumer.


2019 ◽  
Vol 64 (No. 11) ◽  
pp. 467-475
Author(s):  
P Nevrkla ◽  
E Vaclavkova

The study was designed to evaluate the effect of diet supplementation with linseed on the carcass characteristics, meat quality and oxidative stability as well as the composition of the fatty acids in M. longissimus lumborum et thoracis (MLLT) and the backfat of fattening gilts. A total of 40 animals were used, 20 in the experimental and 20 in the control group. The results indicate that gilts fed with the control feed mixture (C) showed a higher (P &lt; 0.05) content of intramuscular fat and backfat as compared to the experimentaL group (L) of gilts. A higher drip loss (P &lt; 0.001) was recorded in the L group as same as higher pH<sub>45</sub> and pH<sub>24</sub> values (P &lt; 0.01). The fatty acid profile analysis in the MLLT showed that the content of the MUFA (monounsaturated fatty acids) was lower (P &lt; 0.01) in the L group than in the C group of the animals and also showed a higher (P &lt; 0.01) content of the PUFA (polyunsaturated fatty acids) in the L group. The content of the n-6 and n-3 PUFA was higher (P &lt; 0.001) in the L group. The ratio of the n-6/n-3 PUFA was significantly lower (P &lt; 0.001) in the L group. The PUFA/SFA (saturated fatty acids) ratio was more favourable in the L group of gilts (P &lt; 0.01). The results of the fatty acid profile analysis in the backfat proved the higher (P &lt; 0.05) content of the UFA (unsaturated fatty acids) in the L group, while the content of the MUFA was lower (P &lt; 0.001) in the L group. The total content of the SFA was lower (P &lt; 0.05) in the L group. A higher content of the PUFA (P &lt; 0.001) in the backfat was recorded in the L group than in the C group and the content of the n-3 PUFA was higher (P &lt; 0.001) in the L group. The ratio of the n-6/n-3 PUFA was more favourable (P &lt; 0.001) in the L group than in the C group. Also, the PUFA/SFA ratio was higher (P &lt; 0.001) in the L group.


2020 ◽  
Vol 20 (2) ◽  
pp. 38-40
Author(s):  
A. Levitsky ◽  
A. Lapinska ◽  
I. Selivanskaya

The article analyzes the role of essential polyunsaturated fatty acids (PUFA), especially omega-3 series in humans and animals. The biosynthesis of essential PUFA in humans and animals is very limited, so they must be consumed with food (feed). Тhe ratio of omega-3 and omega-6 PUFA is very important. Biomembranes of animal cells contain about 30% PUFA with a ratio of ω-6/ ω-3 1-2. As this ratio increases, the physicochemical properties of biomembranes and the functional activity of their receptors change. The regulatory function of essential PUFA is that in the body under the action of oxygenase enzymes (cyclooxygenase, lipoxygenase) are formed extremely active hormone-like substances (eicosanoids and docosanoids), which affect a number of physiological processes: inflammation, immunity, metabolism. Moreover, ω-6 PUFA form eicosanoids, which have pro-inflammatory, immunosuppressive properties, and ω-3 PUFAs form eicosanoids and docosanoids, which have anti-inflammatory and immunostimulatory properties. Deficiency of essential PUFA, and especially ω-3 PUFA, leads to impaired development of the body and its state of health, which are manifestations of avitaminosis F. Prevention and treatment of avitaminosis F is carried out with drugs that contain PUFA. To create new, more effective vitamin F preparations, it is necessary to reproduce the model of vitamin F deficiency. An experimental model of vitamin F deficiency in white rats kept on a fat –free diet with the addition of coconut oil, which is almost completely free of unsaturated fatty acids, and saturated fatty acids make up almost 99 % of all fatty acids was developed. The total content of ω-6 PUFA (sum of linoleic and arachidonic acids), the content of ω-3 PUFA (α-linolenic, eicosapentaenoic and docosahexaenoic acids) in neutral lipids (triglycerides and cholesterol esters) defined. Тhe content of ω-6 PUFA under the influence of coconut oil decreased by 3.3 times, and the content of ω-3 PUFA - by 7.5 times. Тhe influence of coconut oil, the content of ω-6 PUFA decreased by 2.1 times, and the content of ω-3 PUFA - by 2.8 times. The most strongly reduces the content of ω-3 PUFA, namely eicosapentaenoic, coconut oil, starting from 5 %. Consumption of FFD with a content of 15 % coconut oil reduces the content of eicosapentaenoic acid to zero, ie we have an absolute deficiency of one of the most important essential PUFAs, which determined the presence of vitamin F deficiency.


2014 ◽  
Vol 4 (1) ◽  
pp. 31-39
Author(s):  
Siwitri Kadarsih

The objective was to get beef that contain unsaturated fatty acids (especially omega 3 and 6), so as to improve intelligence, physical health for those who consume. The study design using CRD with 3 treatments, each treatment used 4 Bali cattle aged approximately 1.5 years. Observations were made 8 weeks. Pasta mixed with ginger provided konsentrat. P1 (control); P2 (6% saponification lemuru fish oil, olive oil 1%; rice bran: 37.30%; corn: 62.70%; KLK: 7%, ginger paste: 100 g); P3 (lemuru fish oil saponification 8%, 2% olive oil; rice bran; 37.30; corn: 62.70%; KLK: 7%, ginger paste: 200 g). Konsentrat given in the morning as much as 1% of the weight of the cattle based on dry matter, while the grass given a minimum of 10% of the weight of livestock observation variables include: fatty acid composition of meat. Data the analyzies qualitative. The results of the study showed that the composition of saturated fatty acids in meat decreased and an increase in unsaturated fatty acids, namely linoleic acid (omega 6) and linolenic acid (omega 3), and deikosapenta deikosaheksa acid.Keywords : 


2018 ◽  
Vol 19 (11) ◽  
pp. 1309-1317 ◽  
Author(s):  
Daisuke Akagi ◽  
Katsuyuki Hoshina ◽  
Toshiaki Watanabe ◽  
Micheal S. Conte

Foods ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1133
Author(s):  
Atique Ahmed Behan ◽  
Muhammad Tayyab Akhtar ◽  
Teck Chwen Loh ◽  
Sharida Fakurazi ◽  
Ubedullah Kaka ◽  
...  

The supplementation of rumen bypass fat (RBF) has remained one of the preferred approaches used to decrease undesirable saturated fatty acids (FA) and increase beneficial unsaturated FA in the meat. This study was planned to evaluate the influences of rumen bypass fats on meat quality, fatty acid and metabolic profiles in male Dorper sheep (n = 36) with 24.66 ± 0.76 kg (mean ± standard error) initial body weight. Treatment comprised a basal diet (30:70 rice straw to concentrate) with no added RBF as a control (CON), basal diet with prilled fat (PF), basal diet with prilled fat plus lecithin (PFL) and basal diet with calcium soap of palm fatty acids (CaS). The findings revealed that cooking loss, drip loss and shear force in longissimus dorsi (LD) muscle were not affected by RBF supplementation, while meat pH was significantly higher in the CaS on aging day 1. However, the diet supplemented with prilled fat and lecithin modified the meat’s fatty acid profile significantly by increasing unsaturated fatty acids and decreasing saturated fats. The relative quantification of the major differentiating metabolites found in LD muscle of sheep showed that total cholesterol, esterified cholesterol, choline, glycerophosphocholine and glycerophospholipids were significantly lower in CaS and PFL diets, while glycerol and sphingomyelin were significantly higher in CaS and PFL diets. Most of the metabolites in the liver did not show any significant difference. Based on our results, the supplementation of protected fats did not have a negative influence on meat quality and the meat from Dorper sheep fed prilled fat with lecithin contained more healthy fatty acids compared to other diets.


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