Estimation of the carcass composition of yearling bulls of “Asturiana de los Valles” breed from the dissection of a rib joint

Oliván, Mamen; Martínez, Antón García; García, P. Martínez; Noval, G.; Osoro, K.

doi:10.1016/s0309-1740(00)00092-9

Cited by 25 publications

(14 citation statements)

References 8 publications

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“…At the same time the 10th rib was removed, weighed, and stored at 48C for later dissection to yield the corresponding whole SC and IM tissues. The tissue composition around this rib was deemed representative of the tissue composition of the carcass as a whole (Olivá n et al, 2001).…”

Section: Methodsmentioning

confidence: 99%

Adipocyte cellularity in different adipose depots in bulls of seven Spanish breeds slaughtered at two body weights

Alzon

Mendizábal

Arana

et al. 2007

Animal

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The influence of body weight (BW) at slaughter and genotype on adipocyte size and number in the omental (OM), perirenal (PR), subcutaneous (SC) and intermuscular (IM) adipose tissues was studied in 168 bulls of Spain's local Asturiana, Avileñ a, Morucha, Parda Alpina, Pirenaica, Retinta, and Rubia Gallega cattle breeds. The young bulls were slaughtered at two BWs, 320 and 540 kg. The results obtained showed the higher amounts of lipids that accumulated between 320 and 540 kg BW (P , 0.001) to be ascribable primarily to adipose cell hypertrophy, i.e. larger adipocyte size, in the OM and PR depots (P , 0.001). In addition to hypertrophy, there was also an increase (P , 0.001) in the number of adipose cells, i.e. hyperplasia, in the SC and IM adipose depots. Significant differences were observed when comparing the different genotypes, with the Morucha, Retinta and Avileñ a breeds having the highest amount of adipose tissue and the largest adipocytes. The Asturiana and Rubia Gallega breeds had the lowest amount of adipose tissue and the smallest adipocytes. The Pirenaica and Parda Alpina breeds had intermediate values in between the two groups identified above. In short, the results were indicative of different lipid deposition patterns in the different breeds depending on the individual growth and maturation rates in each. Similar findings were made when comparing the different adipose tissue depots, with adipocyte hypertrophy being the main factor responsible for lipid accumulation in the OM and PR depots, as opposed to adipocyte hyperplasia in the SC and IM depots.

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Section: Methodsmentioning

confidence: 99%

Adipocyte cellularity in different adipose depots in bulls of seven Spanish breeds slaughtered at two body weights

Alzon

Mendizábal

Arana

et al. 2007

Animal

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“…The adipose tissue depots used in this study, expressed as a presentage of carcass weight, included 8.4% IT and 2.2% SC fat estimated using 6th rib dissection according to Oliván, Martínez, García, Noval, and Osoro (1999) and 1.7% IM measured using Soxhlet extraction. Wegner, Albrecht, and Ender (1998) also found that the IT depot had the greatest amount of fat which comprised 45% of total carcass fat in 24 months old Black Pied bulls.…”

Section: Adipose Tissuementioning

confidence: 99%

“…In general, comparing adipose tissues, genotype effect was more pronounced in IM and SC FA profiles than in IT, for which no significant differences between genotypes were found in SFA, PUFA (n À 6 and n À 3) and UFA. In addition, the contribution of IT and SC depots to the 6th rib dissection (used as a predictor of carcass composition, Oliván et al, 1999) was dependent on genotype. Double-muscled animals were found to have the lowest IT (4.9% of total rib weight) and SC (1.1% of total rib weight) fat percentages while AM animals had the highest IT (9.8%) and SC (3.2%) fat percentages (P < 0.001).…”

Section: Genotypementioning

confidence: 99%

“…Table 2 Genotype effect on the fatty acid (FA) profile (main groups and ratios) of intramuscular (IM), intermuscular (IT) and subcutaneous (SC) adipose tissues in yearling bulls from Asturiana de los Valles (AV) and Asturiana de la Montañ a (AM) local cattle breeds SFA: saturated fatty acids; BFA: branched fatty acids; MUFA: monounsaturated fatty acids; C18:1trans: coelution of several trans isomers; PUFA: polyunsaturated fatty acids; n À 6: n À 6 type of polyunsaturated fatty acids; n À 3: n À 3 type of polyunsaturated fatty acids; CLA: conjugated linoleic acid; UFA: unsaturated fatty acids; M/S = MUFA/SFA; P/S = PUFA/SFA; U/S = UFA/SFA. U IM fat% was determined by NIRS calibrated by reference to a Soxhlet fat extraction method (ISO 1443(ISO -1973 (Oliván et al (2002)), while IT fat% and SC fat% were recorded according to the 6th rib dissection into lean, IT fat, SC fat and bone (Oliván et al (1999)). * P < 0.05.…”

Section: Subcutaneous Depotmentioning

confidence: 99%

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Characterisation of intramuscular, intermuscular and subcutaneous adipose tissues in yearling bulls of different genetic groups

et al. 2007

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Fatty acid (FA) composition of intramuscular (IM, Longissimus thoracis muscle), intermuscular (IT) and subcutaneous (SC) fat of one hundred intensively fed yearling bulls with different propensities to fatten were studied. Meat samples were collected from Asturiana de los Valles bulls with different genotypes with respect to the myostatin gene (mh/mh n = 24, mh/+ n = 26 and +/+ n = 25) and from Asturiana de la Montañ a (n = 25) bulls lacking the mutation responsible for double muscling and characterised by small to mediumframe size adapted to less favoured mountain areas. FA profiles were expressed as percentages of total FA (g/100 g of total FA) and organised into groups (saturated (SFA), branched (BFA), monounsaturated (MUFA), C18:1trans, polyunsaturated (PUFA), n À 6, n À 3, conjugated linoleic acids (CLA), unsaturated (UFA)) and ratios (MUFA/SFA (M/S), PUFA/SFA (P/S), UFA/SFA (U/S), n À 6/n À 3).The IT depot was the most saturated and SC depot contained the most monounsaturated FAs, while IM fat had the most polyunsaturated FAs. IM fat showed the highest P/S ratio and for the n À 6/n À 3 ratio there were no significant differences between adipose tissue depots.In general, genotype effects were more pronounced in IM and SC fat profiles compared to the IT depot, for which no significant differences between genotypes were found in SFA, PUFA (including n À 6 and n À 3), UFA and most of the ratios. IM fat of mh/mh animals had the highest content of PUFA and thus the highest P/S ratio. Accordingly, the presence of the gene causing double muscling influenced the tendency to deposit carcass fat and its FA composition, mainly in IM fat. In general, when carcass fat decreased, SFA content decreased while PUFA and UFA contents increased due to the changes in their percentages.

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“…were recorded as bone. The 6th rib dissection was used as a predictor of the carcass composition (Oliván et al, 1999).…”

Section: Carcass Measurements and Samplingmentioning

confidence: 99%

Correlation between carcass conformation and fat cover degree, and muscle fatty acid profile of yearling bulls depending on breed and mh-genotype

et al. 2007

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The objective was to study the relationships between the actual European beef carcass classification scale, which classifies carcasses with regard to conformation and degree of fat cover scores, and muscle fat quality, depending on breed and mh-genotype. For this purpose samples from 100 yearling bulls from "Asturiana de los Valles" (24 AV(mh/mh), 26 AV(mh/+), 25 AV (+/+)) and "Asturiana de la Montaña" (25 AM) were analysed. The results of the study showed that breed or genotype affect carcass measurement scores and muscle fatty acid profile through its important effect on animal overall fatness. Homozygous doublemuscled animals produced carcasses with high conformation and low intramuscular (IM) fat content. While early-maturing and rustic AM animals produced low carcass yield and high IM fat content. The other genotypes (mh/+, +/+) showed, in general, intermediate characteristics. Referring to correlations, carcass conformation was negatively related to saturated (SFA) (r = − 0.69, P b 0.001) and monounsaturated fatty acid (MUFA) (r = −0.69, P b 0.001) groups, and positively to polyunsaturated (PUFA) (r = 0.72), n-6 (r = 0.72), n-3 (r = 0.71) and unsaturated fatty acid (UFA) (r = 0.69) groups, being all of them significant (P b 0.001). However, carcass degree of fat cover was positively related to SFA (r = 0.53, P b 0.001) and MUFA (r = 0.62, P b 0.001), and negatively to PUFA (r = −0.61), n-6 (r = − 0.60), n-3 (r = −0.62) and UFA (r = − 0.53) groups, being all of them significant. Moreover, simple and low-cost prediction equations were calculated for a rapid and sufficiently accurate fatty acid group (SFA, MUFA, PUFA, n-6, n-3, UFA) estimation (R 2 N 0.46, P b 0.001). In general, meat obtained from double-muscled animals display a more appropriate IM fatty acid profile from the nutritional point of view according to actual recommendations, but it could happen the disability of these lean animals to deposit sufficient IM fat to ensure consumer overall liking or acceptability.

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Estimation of the carcass composition of yearling bulls of “Asturiana de los Valles” breed from the dissection of a rib joint

Cited by 25 publications

References 8 publications

Adipocyte cellularity in different adipose depots in bulls of seven Spanish breeds slaughtered at two body weights

Adipocyte cellularity in different adipose depots in bulls of seven Spanish breeds slaughtered at two body weights

Characterisation of intramuscular, intermuscular and subcutaneous adipose tissues in yearling bulls of different genetic groups

Correlation between carcass conformation and fat cover degree, and muscle fatty acid profile of yearling bulls depending on breed and mh-genotype

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