A comparison between the body composition, carcass characteristics and retail cuts of South African Mutton Merino and Dormer sheepe/pj

Cloete, J.J.E.; Hoffman, Louwrens C.; Cloete, S.W.P.; Fourie, Jannie

doi:10.4314/sajas.v34i1.4040

Cited by 24 publications

(20 citation statements)

References 26 publications

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“…The dressing percentage results obtained from the present study are similar to those previously recorded for sub-adult male impala (57.0%-59.2%) [16]. The mean pooled warm dressing percentage of male and female impala (57.4%) from the present study is higher than the dressing percentages of domestic livestock, which has been reported to range from 50.3% to 53.8% for cattle [32] and 41.5% to 44.2% for sheep [33]. In combination with the lack of visible subcutaneous fat in impala, these high dressing percentages are indicative of higher lean meat production potential in impala.…”

Section: Carcass and Offal Yieldssupporting

confidence: 89%

Carcass Yields and Physiochemical Meat Quality of Semi-extensive and Intensively Farmed Impala (Aepyceros melampus)

Needham

Engels

Bureš

et al. 2020

Foods

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The effects of sex and production systems on carcass yield, meat quality and proximate composition of sub-adult impala were evaluated by culling 35 impala from intensive (12 males) and semi-extensive (12 males and 11 females) production systems within the same game farm. While no sexual dimorphism was found for carcass weights, male impala had a higher dressing percentage than females, indicating a higher meat production potential. Few differences were observed for yields between the male impala from the different production systems, but physical meat quality parameters indicated possible stress for those kept intensively. Minor differences existed in physiochemical parameters between various impala muscles for the two sexes and production systems, providing little motivation for these factors to be considered when processing sub-adult impala carcasses. Impala meat from both sexes, all muscles and all production systems produced meat with shear force values below 43 N, and thus may be considered as tender. Furthermore, the proximate composition of all impala meat in this study ranged from 74.7 to 77.0 g/100g moisture, 20.7 to 23.5 g/100g protein, 1.2 to 2.2 g/100g fat and 1.1 to 1.3 g/100g ash content. These values compare favorably to other game species, indicating that impala meat may serve as a lean protein source.

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Section: Carcass and Offal Yieldssupporting

confidence: 89%

Carcass Yields and Physiochemical Meat Quality of Semi-extensive and Intensively Farmed Impala (Aepyceros melampus)

Needham

Engels

Bureš

et al. 2020

Foods

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“…In addition, the presence of fatty acids heneicosanoic acid could oxidize omega fatty acids, but the exact mechanism is still unknown. The results of this study indicate that the marbling fat content of garut sheep was 1.60% -1.73%, lower than other sheep breeds such as south african mutton, merino, dormer (Cloete et al, 2004), moranda nova, santa inez and crosses dorper x santa inez (Costa et al, 2009) as well as cholesterol content (6.10% -8.91%) was lower than reported Costa et al (2009) and Mas'ud (2012). It is suspected due to the age of the sheep were used relatively young (8-10 months), where the deposition of marbling not yet formed perfectly.…”

Section: Association Of Polymorphisms Lipoprotein Lipase Gene C 192 contrasting

confidence: 49%

“…LPL leads to increased oxidation Oleic was most abundant fatty acid in this study, followed by palmitic, stearic, myristic, palmitoleic and linoleic. Several studies have reported that oleic is the major fatty acid was found in sheep (Cloete et al, 2004;Costa et al, 2009;Gallardo et al, 2011;Borys et al, 2012;Popova, 2014). Oleic acid is formed by stearic acid by activity of stearoyl CoA desaturase (Wood et al, 2008).…”

Section: Association Of Polymorphisms Lipoprotein Lipase Gene C 192 mentioning

confidence: 98%

Single Nucleotide Polymorphisms of Lipoprotein Lipase Gene and Its Association With Marbling Quality in Local Sheeps

Sumantri

Noor

Priyanto

et al. 2015

J. Indonesian Trop. Anim. Agric.

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ABSTRAKLipoprotein lipase (LPL) merupakan enzim kunci dalam metabolisme dan transport lipoprotein yang mempengaruhi level trigliserida darah. LPL mengontrol partisi triasilgliserol antara jaringan lemak dan otot serta dapat meningkatkan penyimpanan lemak atau menyediakan energi dalam bentuk asam lemak untuk pertumbuhan otot. Penelitian ini bertujuan untuk mengeksplorasi keragaman gen LPL pada domba lokal Indonesia dan hubungannya dengan kualitas marbling. Total 66 DNA genom (260 bp) domba lokal Indonesia yang terdiri atas domba ekor tipis sumatera (50 ekor) dan domba garut (16 ekor) digunakan dalam penelitian ini. Amplifikasi DNA genome menggunakan Polymerase Chain Reaction dan metode direct sequencing digunakan untuk mengidentifikasi keragaman sekuens. Hasil sekuens dianalisis menggunakan software Bioedit dan MEGA 5.2. Sekuens kemudian disejajarkan menggunakan metode Clustal W dengan gen bank X.68308.1. Assosiasi keragaman gen LPL dengan kualitas marbling dianalisis menggunakan metode ANOVA satu arah dan uji lanjut menggunakan uji beda nyata terkecil. Hasil penelitian menemukan 3 SNPs baru pada posisi basa g.26>C/G, g.27>G dan c.192 T>C pada domba garut dan insersi g.26>C/G pada domba ekor tipis sumatera. Keragaman gen LPL posisi basa c.192 pada domba garut berasosiasi dengan asam lemak heneikosanoat, dimana genotipe TT (0.04%) memiliki kandungan lebih tinggi dibandingkan genotipe CC (0,03%) dan CT (0,02%). Kata kunci: gen LPL, SNPs, lamb, asam-asam lemak, henekosanoat ABSTRACTLipoprotein lipase (LPL) is a key enzyme that plays in metabolism and transport lipoprotein and therefore has an influence on blood triglyceride levels. LPL controls triacylglycerol partitioning between adipose tissue and muscle that increases fat storage or provides energy in the form of fatty acids for muscle growth. The research was aimed to explore Single Nucleotide Polymorphisms of LPL gene and to associate SNP with marbling quality. A total of 66 genomic DNAs consisted of sumatera thin-tail ed sheep (50 heads) and garut sheep (16 heads) were used in this study. Polymerase Chain Reaction was used to amplify genomic DNA and direct sequencing method was to identify polymorphism sequences. The sequences were analyzed with Bio Edit and MEGA 5.2. The BLAST sequence was obtained from gene bank X.68308.1. The association between the genotype and marbling quality was analyze by one way ANOVA and further between mean differences were tested using least sgnificant difference. The results showed that 3 novel SNPs i.e. insertion g.26>C; insertion g.27> G and c.192T>C on garut sheep and a SNP insertion g.26>C/G on sumatera thin-tail ed sheep. The diversity of LPL gene at c.192T>C was associated with heneicosanoic acid, whereas TT genotype (0.04%) was higher than CC (0.03%) and CT (0.02%).

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“…Cloete et al (2007) found that the SCF depth of Dorper lambs slaughtered at 43 kg was ~2.16 mm, while crossbred lambs from SAMM and Merino sires had a significantly thinner fat depth. The SAMM breed tends to deposit SCF at a relatively slower rate (Neser et al, 2000;Cloete et al 2004) than the early maturing Dorper breed. The Merino is a leaner and later maturing breed, and so would deposit fat at a slower rate than other meat sheep breeds.…”

Section: Discussionmentioning

confidence: 99%

Analysis of carcass characteristics and fat deposition of Merino, South African Mutton Merino and Dorper lambs housed in a feedlot

Brand¹,

Westhuizen²,

Merwe³

et al. 2018

SA J. An. Sci.

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The objective of this study was to determine the effect of time spent in a feedlot on the size of the various fat depots and the distribution of the main tissues (muscle, bone, and fat) of three common South African sheep breeds. Lambs were supplied with a balanced diet (16% protein, 10 MJ ME/kg feed) ad libitum and had free access to water. Lambs from each breed were divided into six groups, which were slaughtered at 21-day intervals until a production period of 105 days had been reached. During carcass dressing, visceral and renal fat was removed and expressed as a percentage of carcass weight. The subcutaneous fat (SCF) depth was measured on the longissimus lumborum at the 13th rib position using an electronic calliper. The proportion of muscle, bone and fat was determined by dissecting a three-rib cut made on the prime rib between the 9th and 11th ribs. The percentage of visceral and renal fat increased throughout the production period for all breeds. The percentage of renal fat was up to 2.9% higher than the percentage visceral fat in both SAMM production groups. Dorper lambs tended to have high SCF levels (5.6 mm fat after 42 days) due to the early maturing nature of the breed. They reached a maximum fat depth of 20.4 mm fat after 105 days. The SAMM lambs tended to deposit SCF at a slower rate and the late maturing Merino breed was found to be much leaner, and did not reach the high fat levels of the SAMM or Dorper lambs. The percentage of muscle and bone in all carcasses decreased with an increase in the number of days in the feedlot, while the percentage of carcass fat increased during this period. The increase in late maturing adipose tissue in all breeds as they become older is amplified by the restricted movement in the feedlot and high energy diet that the lambs receive.

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A comparison between the body composition, carcass characteristics and retail cuts of South African Mutton Merino and Dormer sheepe/pj

Cited by 24 publications

References 26 publications

Carcass Yields and Physiochemical Meat Quality of Semi-extensive and Intensively Farmed Impala (Aepyceros melampus)

Carcass Yields and Physiochemical Meat Quality of Semi-extensive and Intensively Farmed Impala (Aepyceros melampus)

Single Nucleotide Polymorphisms of Lipoprotein Lipase Gene and Its Association With Marbling Quality in Local Sheeps

Analysis of carcass characteristics and fat deposition of Merino, South African Mutton Merino and Dorper lambs housed in a feedlot

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