Meat quality and fatty acid composition of lipids in muscle and fatty tissue of Skudde lambs fed grass versus concentrate

Nuernberg, Karin; Fischer, Andréas; Nuernberg, Gerd; Ender, K.; Dannenberger, Dirk

doi:10.1016/j.smallrumres.2007.07.009

Cited by 86 publications

(88 citation statements)

References 13 publications

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“…The 9 desaturation (C18) index, both in depot and intramuscular fats, was found to be higher in CO lambs than in PS lambs (p< 0.001; Tables 4 and 5). In similar studies, the C16:1 and/or C18:1 content was high in the concentrate-fed lambs (Cividini et al, 2014;Fisher et al, 2000;Santos-Silva et al, 2002a;Nuernberg et al, 2008), but these results were not found to be significant in other studies (Diaz et al, 2002;Popova, 2007). Moreover, the effect of feeding system on C16:1, C18:1n9 and C18:3n3 varied depending on muscle type, and significant interactions were present for these FAs (p< 0.001).…”

Section: Fa Composition Of Adipose Tissuementioning

confidence: 81%

“…The biohydrogenation activity of polyionic FAs decreased due to the concentrate diet reducing rumen pH levels and the time spent by the concentrate in the rumen when compared to that of forage (Jenkins et al, 2008;Wood et al, 2008;Diaz et al, 2002). However, it was reported that there were similarities in the percentages of C16:0 and C18:0 in SC and TF (Nuernberg et al, 2008;Velasco et al, 2001) and intramuscular fats (Cividini et al, 2014;Popova, 2007) from pasture and concentrate lambs. In the present study, no significant difference in the percentage of saturated FAs (SFA) in depot fats was determined.…”

Section: Fa Composition Of Adipose Tissuementioning

confidence: 99%

“…Previous studies that predominantly compared pasture vs. grain feeding indicated that growth performance and carcass characteristics (Carrasco et al, 2009b;Ripoll et al, 2008), meat quality traits, such as color (Priolo et al, 2001;Ripoll et al, 2008), water-holding capacity (WHC) (Santos-Silva et al, 2002b), sensory characteristics (Duckett et al, 2013;Fisher et al, 2000), fatty acid (FA) profile (Karaca and Kor, 2015;Nuernberg et al, 2008), and oxidative stability (Popova, 2007), can also be affected by feeding systems. In general, pasture-fed lambs have leaner carcasses, lower dressing percentage, and more Pastures plays a very important role in small ruminant breeding and in extensive animal feeding, which is common practice in Turkey, where supplementation of lambs with commercial concentrate is limited.…”

Section: Introductionmentioning

confidence: 99%

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The effect of feeding system on slaughter-carcass characteristics, meat quality, and fatty acid composition of lambs

et al. 2016

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Abstract. In this study, we aimed to determine the slaughter-carcass characteristics, meat quality, and fatty acid composition in lambs raised under intensive and extensive conditions. The animal material consisted of 30 Norduz male lambs, with an average age of 171 days. The lambs were divided into two groups: concentrate-fed lambs (CO) and pasture-fed lambs (PS). The results showed that the CO lambs had heavier carcasses (p< 0.001), a higher dressing percentage (p< 0.001), and higher intramuscular fat (p< 0.01) than the PS lambs. It was determined that the longissimus thoracis muscle of the CO lambs had a lower ultimate pH and higher L * and water-holding capacity than the PS lambs. In this study, intramuscular fat (longissimus thoracis, semimembranosus, triceps brachii), subcutaneous and tail fat samples were used to evaluate the effect of feeding system on fatty acid composition. The polyunsaturated fatty acid to saturated fatty acid ratio (PUFA / SFA) of intramuscular fat was found to be significantly higher in the CO group than in the PS lambs, while similar subcutaneous and tail fat results were found in both groups. Moreover, the PS lambs had a lower n6 / n3 ratio and higher percentage of omega-3 than the CO lambs in all tissues studied (p< 0.05). Overall, the CO lambs have heavier and fattier carcasses with better meat quality traits than the PS lambs. However, the effects of feeding system have varying results based on the fatty acid composition of different types of fat deposits.

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Section: Fa Composition Of Adipose Tissuementioning

confidence: 81%

Section: Fa Composition Of Adipose Tissuementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effect of feeding system on slaughter-carcass characteristics, meat quality, and fatty acid composition of lambs

et al. 2016

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“…Previous studies that predominantly compared pasture vs. grain feeding indicated that growth performance and carcass characteristics (Carrasco et al, 2009;Ripoll et al, 2008), meat quality traits, such as color (Priolo et al, 2001;Ripoll et al, 2008), water-holding capacity (WHC) always linked to sensory and technological properties of meat such as tenderness, juiciness and cooking yield (Pena et al, 2009). (Santos-Silva et al, 2002, sensory characteristics (Duckett et al, 2013;Fisher et al, 2000), fatty acid (FA) profile (Karaca and Kor, 2015;Nuernberg et al, 2008), and oxidative stability (Popova, 2007), can also be affected by feeding systems. In general, meat is composed of water, fat, protein, minerals and a small proportion of carbohydrate FAO (2007).…”

Section: Chemical Composition Of Meatmentioning

confidence: 99%

“…Perry et al (2001) reported that a shear force below 4 kg (40 N) is what equates to meat with an acceptable level of tenderness in Australian markets. Hopkins et al (2006) and Shorthose et al (1986) concluded that sheep meat with shear force values less than 49 N is considered and acknowledged as tender.Low pH and high carcass temperature can enhance the disruption of the lysosomal membrane to release cathepsins, which will then have access to myofibril proteins resulting in meat tenderness (O'Halloran et al, 1997;Hopkins and Taylor, 2002).Compared to goat, sheep meat tends to be higher tender, with low shear force values and collagen content (McMillin and Brock, 2005;Webb et al, 2005). Carcass composition is another important aspect of meat quality and is normally assessed by amount of physical dissected tissues (muscle, fat and bones) or chemical analysed constituents i.e.…”

Section: Meat Qualitymentioning

confidence: 99%

A Review Sheep Production System, Yield, Quality and Preservation Methods in Ethiopia

Worku¹,

Yadav²

2017

GJAS

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Expression of lipid metabolism related genes in subcutaneous adipose tissue from Chilota lambs grazing on two different pasture types

Gallardo

Cárcamo

Hiller

et al. 2014

Euro J Lipid Sci & Tech

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The focus of the present study was to investigate how the different chemical and botanical composition of two different pasture types, Calafatal pasture (CP) and naturalized pasture (NP), affect gene/protein expression levels of lipogenic enzymes and transcription factors (ACC, FAS, SCD1, and SREBP‐1c) as well as the concentrations of their fatty acid products in subcutaneous adipose tissue of Chilota lambs. Sixteen male Chilota lambs kept under different grazing conditions, CP versus NP, in Chiloé Archipelago (Chile) were included in the experiment. QRT‐PCR, western blot and fatty acid analysis were performed of subcutaneous adipose tissue samples. Compared to NP, CP diet induced a 1.51‐fold increase of ACACA expression, a 1.60‐fold rise of FASN expression and a 1.56‐fold elevation of SREBF1 expression. SCD gene expression did not significantly differ between both feeding groups. Different pasture types did not affect protein expression levels of lipogenic enzymes (ACC, FAS, and SCD1) and transcription factor pSREBP‐1c (precursor form) and mSREBP‐1c (mature form) in subcutaneous fat of lambs. Amounts of single and the sum of saturated fatty acids were significantly higher in subcutaneous fat samples of lambs fed NP than of lambs fed CP. Concentrations of single PUFA and the sum n‐3 and n‐6 PUFA and the n‐6/n‐3 PUFA ratio were not affected by different pasture types. The inclusion of different adipose tissue depots and more sampling “endpoints” during animal growth may be beneficial to comprehensively elucidate the mechanisms by which dietary PUFA intervention affects the lipid metabolism of adipose tissues in lambs. Practical applications: Increasing public awareness of the health benefits attributable to PUFA (n‐3 PUFA) has stimulated interest in sources of these fatty acids for human consumption. In relation to lamb adipose and muscle tissue, it is considered a good source of nutrients such as PUFA, especially if lambs are fed on pastures rather than concentrates. This study provides deeper insights in the clarification of the regulation of fatty acid biosynthesis and fat partitioning in tissues of ruminants with special emphasis on lambs. Relative gene expression differences between subcutaneous fat samples of Chilota lambs grazing on two different pasture types, Calafatal pasture (CP) and naturalized pasture (NP).

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Meat quality and fatty acid composition of lipids in muscle and fatty tissue of Skudde lambs fed grass versus concentrate

Cited by 86 publications

References 13 publications

The effect of feeding system on slaughter-carcass characteristics, meat quality, and fatty acid composition of lambs

The effect of feeding system on slaughter-carcass characteristics, meat quality, and fatty acid composition of lambs

A Review Sheep Production System, Yield, Quality and Preservation Methods in Ethiopia

Expression of lipid metabolism related genes in subcutaneous adipose tissue from Chilota lambs grazing on two different pasture types

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