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Koldo Osoro - One of the best experts on this subject based on the ideXlab platform.

  • N-6 and n-3 fatty acids in different beef adipose tissues depending on the presence or absence of the gene responsible for Double-Muscling
    Czech Journal of Animal Science, 2018
    Co-Authors: N. Aldai, M.e.r. Dugan, A.i. Nájera, Koldo Osoro
    Abstract:

    Levels of n-6 and n-3 PUFAs, including those with 20 and 22 carbon-chains, in concentrate-fed Asturiana de los Valles (AV) yearling bulls with and without the Double Muscling gene ( mh/mh = 24, mh/+ = 26, +/+ = 25) were measured to examine if this gene influences the pattern of PUFA deposition in different adipose tissues. Fatty acid compositions of muscle tissue ( longissimus thoracis) and intermuscular and sub - cutaneous adipose tissues were determined by gas chromatography. The composition of intramuscular fat was unique compared to the other two adipose tissues which were similar in composition. In general, n-6 and n-3 fatty acid elongation and desaturation products were affected by AV genotype and this effect was most evident in n-3 PUFAs of the intramuscular fat of mh/mh (n-6/n-3 = 11.8 and 18:2n-6/18:3n-3 = 25.3) compared to mh/+ and +/+ animals (mean values of n-6/n-3 = 9.86 and 18:2n-6/18:3n-3 = 15.5). PUFA elongation and desaturation end products did not accumulate to any great extent in intermuscular and sub - cutaneous adipose tissues. Beef from mh/mh cattle showed greater deposition rates of n-3 elongation and desaturation products but their absolute content of total n-3 fatty acids was lower (21 mg/100 g meat) in comparison with mh/+ and +/+ cattle (mean value of 25 mg/100 g meat).

  • Double Muscling character influences the trans 18 1 and conjugated linoleic acid profiles in concentrate fed yearling bulls
    Meat Science, 2010
    Co-Authors: Noelia Aldai, Michael E. R. Dugan, Manuel Juárez, Antonio Martínez, Koldo Osoro
    Abstract:

    Seventy-five yearling bulls of the "Asturiana de los Valles" northern-Spanish beef breed (Double-muscled, mh/mh, n=24; heterozygous, mh/+, n=26; normal, +/+, n=25) were produced under intensive conditions and the effects of Double-Muscling genotype on trans-18:1 and CLA isomer profiles were examined. Total trans-18:1 contents, measured as percentages of total fatty acid methyl esters, were 10.98-15.07% in backfat and 8.64-9.46% in muscle, and the major isomer was 10t-18:1 in all animals. In mh/+ animals, 11t-18:1 was the second most abundant trans isomer in muscle whereas in mh/mh and +/+ animals 11t-18:1 and 13t/14t-18:1 were relatively similar. Total CLA percentages were 0.71-0.85% in backfat and 0.32-0.40% in muscle. The highest total CLA percentage found was in mh/+, intermediate in +/+ and lowest in mh/mh animals (P<0.05). Heterozygous animals had significantly higher percentages of 9c,11t- (P<0.01), 11t,13c- (P<0.01) and 9c,11c-18:2 (P<0.05) and also significantly higher percentages of the sum of 9c,11t-/11t,13c-/11t,13t-18:2. Overall, mh/+ animals produced meat with a slightly better trans and CLA profile (i.e., less 10t-18:1 and more 11t-18:1 and 9c,11t-18:2) than other genotypes, however, further improvements would still be necessary to achieve a profile with a positive health image.

  • Double-Muscling character influences the trans-18:1 and conjugated linoleic acid profiles in concentrate-fed yearling bulls
    Meat science, 2009
    Co-Authors: Noelia Aldai, Michael E. R. Dugan, Manuel Juárez, Antonio Martínez, Koldo Osoro
    Abstract:

    Seventy-five yearling bulls of the "Asturiana de los Valles" northern-Spanish beef breed (Double-muscled, mh/mh, n=24; heterozygous, mh/+, n=26; normal, +/+, n=25) were produced under intensive conditions and the effects of Double-Muscling genotype on trans-18:1 and CLA isomer profiles were examined. Total trans-18:1 contents, measured as percentages of total fatty acid methyl esters, were 10.98-15.07% in backfat and 8.64-9.46% in muscle, and the major isomer was 10t-18:1 in all animals. In mh/+ animals, 11t-18:1 was the second most abundant trans isomer in muscle whereas in mh/mh and +/+ animals 11t-18:1 and 13t/14t-18:1 were relatively similar. Total CLA percentages were 0.71-0.85% in backfat and 0.32-0.40% in muscle. The highest total CLA percentage found was in mh/+, intermediate in +/+ and lowest in mh/mh animals (P

  • The influence of breed and mh-genotype on carcass conformation, meat physico-chemical characteristics, and the fatty acid profile of muscle from yearling bulls
    Meat science, 2005
    Co-Authors: Noelia Aldai, Antonio Martínez, Koldo Osoro, M. Oliván, Brendan Murray, Declan J. Troy, A.i. Nájera
    Abstract:

    Abstract The influence of breed and mh -genotype on carcass conformation, meat physico-chemical characteristics and the fatty acid profile of muscle were studied. Samples from 16 yearling bulls from “Asturiana de los Valles” (AV, n  = 12) and “Asturiana de la Montana” (AM, n  = 4) were collected. AV animals were classified into three groups according to the presence of the gene causing Double-Muscling (AV Double-muscled ( mh/mh ), n  = 4; AV heterozygous ( mh /+), n  = 4; AV normal (+/+), n  = 4). Double-muscled animals displayed better carcass traits, lower total fat (comprised of subcutaneous (SC), intermuscular (IT) and intramuscular (IM) deposits), higher lean, moisture and drip loss, and lighter meat than AV normal animals. Heterozygous animals showed intermediate characteristics. AM animals, being a more rustic and smaller breed, showed lower conformation, higher total fat (SC, IT and IM), lower moisture and darker meat. According to the intramuscular fatty acid profile, mh / mh animals showed a lower proportion of SFA and MUFA, and a higher proportion of PUFA with an equal proportion of CLA in total fatty acid content. The P/S ratio increased with increasing number of mh alleles (or Double-Muscling character), while no differences between animal groups were found for the n  − 6/ n  − 3 ratio.

  • Effect of muscular hypertrophy on physico-chemical, biochemical and texture traits of meat from yearling bulls.
    Meat science, 2004
    Co-Authors: M. Oliván, Antonio Martínez, Koldo Osoro, Carlos Sañudo, Begoña Panea, José Luis Olleta, María Del Mar Campo, M. Angels Oliver, X. Serra, Marta Gil
    Abstract:

    The effect of the presence of the Double-Muscling gene either homozygous (mh/mh) or heterozygous (mh/+) on the physico-chemical, biochemical and texture traits of Longissimus thoracis muscle of yearling bulls of the Asturiana de los Valles (AV) breed was studied. Meat of mh/mh bulls had lower amount of intramuscular fat (p

Noelia Aldai - One of the best experts on this subject based on the ideXlab platform.

  • Double Muscling character influences the trans 18 1 and conjugated linoleic acid profiles in concentrate fed yearling bulls
    Meat Science, 2010
    Co-Authors: Noelia Aldai, Michael E. R. Dugan, Manuel Juárez, Antonio Martínez, Koldo Osoro
    Abstract:

    Seventy-five yearling bulls of the "Asturiana de los Valles" northern-Spanish beef breed (Double-muscled, mh/mh, n=24; heterozygous, mh/+, n=26; normal, +/+, n=25) were produced under intensive conditions and the effects of Double-Muscling genotype on trans-18:1 and CLA isomer profiles were examined. Total trans-18:1 contents, measured as percentages of total fatty acid methyl esters, were 10.98-15.07% in backfat and 8.64-9.46% in muscle, and the major isomer was 10t-18:1 in all animals. In mh/+ animals, 11t-18:1 was the second most abundant trans isomer in muscle whereas in mh/mh and +/+ animals 11t-18:1 and 13t/14t-18:1 were relatively similar. Total CLA percentages were 0.71-0.85% in backfat and 0.32-0.40% in muscle. The highest total CLA percentage found was in mh/+, intermediate in +/+ and lowest in mh/mh animals (P<0.05). Heterozygous animals had significantly higher percentages of 9c,11t- (P<0.01), 11t,13c- (P<0.01) and 9c,11c-18:2 (P<0.05) and also significantly higher percentages of the sum of 9c,11t-/11t,13c-/11t,13t-18:2. Overall, mh/+ animals produced meat with a slightly better trans and CLA profile (i.e., less 10t-18:1 and more 11t-18:1 and 9c,11t-18:2) than other genotypes, however, further improvements would still be necessary to achieve a profile with a positive health image.

  • Double-Muscling character influences the trans-18:1 and conjugated linoleic acid profiles in concentrate-fed yearling bulls
    Meat science, 2009
    Co-Authors: Noelia Aldai, Michael E. R. Dugan, Manuel Juárez, Antonio Martínez, Koldo Osoro
    Abstract:

    Seventy-five yearling bulls of the "Asturiana de los Valles" northern-Spanish beef breed (Double-muscled, mh/mh, n=24; heterozygous, mh/+, n=26; normal, +/+, n=25) were produced under intensive conditions and the effects of Double-Muscling genotype on trans-18:1 and CLA isomer profiles were examined. Total trans-18:1 contents, measured as percentages of total fatty acid methyl esters, were 10.98-15.07% in backfat and 8.64-9.46% in muscle, and the major isomer was 10t-18:1 in all animals. In mh/+ animals, 11t-18:1 was the second most abundant trans isomer in muscle whereas in mh/mh and +/+ animals 11t-18:1 and 13t/14t-18:1 were relatively similar. Total CLA percentages were 0.71-0.85% in backfat and 0.32-0.40% in muscle. The highest total CLA percentage found was in mh/+, intermediate in +/+ and lowest in mh/mh animals (P

  • The influence of breed and mh-genotype on carcass conformation, meat physico-chemical characteristics, and the fatty acid profile of muscle from yearling bulls
    Meat science, 2005
    Co-Authors: Noelia Aldai, Antonio Martínez, Koldo Osoro, M. Oliván, Brendan Murray, Declan J. Troy, A.i. Nájera
    Abstract:

    Abstract The influence of breed and mh -genotype on carcass conformation, meat physico-chemical characteristics and the fatty acid profile of muscle were studied. Samples from 16 yearling bulls from “Asturiana de los Valles” (AV, n  = 12) and “Asturiana de la Montana” (AM, n  = 4) were collected. AV animals were classified into three groups according to the presence of the gene causing Double-Muscling (AV Double-muscled ( mh/mh ), n  = 4; AV heterozygous ( mh /+), n  = 4; AV normal (+/+), n  = 4). Double-muscled animals displayed better carcass traits, lower total fat (comprised of subcutaneous (SC), intermuscular (IT) and intramuscular (IM) deposits), higher lean, moisture and drip loss, and lighter meat than AV normal animals. Heterozygous animals showed intermediate characteristics. AM animals, being a more rustic and smaller breed, showed lower conformation, higher total fat (SC, IT and IM), lower moisture and darker meat. According to the intramuscular fatty acid profile, mh / mh animals showed a lower proportion of SFA and MUFA, and a higher proportion of PUFA with an equal proportion of CLA in total fatty acid content. The P/S ratio increased with increasing number of mh alleles (or Double-Muscling character), while no differences between animal groups were found for the n  − 6/ n  − 3 ratio.

Antonio Martínez - One of the best experts on this subject based on the ideXlab platform.

  • Double Muscling character influences the trans 18 1 and conjugated linoleic acid profiles in concentrate fed yearling bulls
    Meat Science, 2010
    Co-Authors: Noelia Aldai, Michael E. R. Dugan, Manuel Juárez, Antonio Martínez, Koldo Osoro
    Abstract:

    Seventy-five yearling bulls of the "Asturiana de los Valles" northern-Spanish beef breed (Double-muscled, mh/mh, n=24; heterozygous, mh/+, n=26; normal, +/+, n=25) were produced under intensive conditions and the effects of Double-Muscling genotype on trans-18:1 and CLA isomer profiles were examined. Total trans-18:1 contents, measured as percentages of total fatty acid methyl esters, were 10.98-15.07% in backfat and 8.64-9.46% in muscle, and the major isomer was 10t-18:1 in all animals. In mh/+ animals, 11t-18:1 was the second most abundant trans isomer in muscle whereas in mh/mh and +/+ animals 11t-18:1 and 13t/14t-18:1 were relatively similar. Total CLA percentages were 0.71-0.85% in backfat and 0.32-0.40% in muscle. The highest total CLA percentage found was in mh/+, intermediate in +/+ and lowest in mh/mh animals (P<0.05). Heterozygous animals had significantly higher percentages of 9c,11t- (P<0.01), 11t,13c- (P<0.01) and 9c,11c-18:2 (P<0.05) and also significantly higher percentages of the sum of 9c,11t-/11t,13c-/11t,13t-18:2. Overall, mh/+ animals produced meat with a slightly better trans and CLA profile (i.e., less 10t-18:1 and more 11t-18:1 and 9c,11t-18:2) than other genotypes, however, further improvements would still be necessary to achieve a profile with a positive health image.

  • Double-Muscling character influences the trans-18:1 and conjugated linoleic acid profiles in concentrate-fed yearling bulls
    Meat science, 2009
    Co-Authors: Noelia Aldai, Michael E. R. Dugan, Manuel Juárez, Antonio Martínez, Koldo Osoro
    Abstract:

    Seventy-five yearling bulls of the "Asturiana de los Valles" northern-Spanish beef breed (Double-muscled, mh/mh, n=24; heterozygous, mh/+, n=26; normal, +/+, n=25) were produced under intensive conditions and the effects of Double-Muscling genotype on trans-18:1 and CLA isomer profiles were examined. Total trans-18:1 contents, measured as percentages of total fatty acid methyl esters, were 10.98-15.07% in backfat and 8.64-9.46% in muscle, and the major isomer was 10t-18:1 in all animals. In mh/+ animals, 11t-18:1 was the second most abundant trans isomer in muscle whereas in mh/mh and +/+ animals 11t-18:1 and 13t/14t-18:1 were relatively similar. Total CLA percentages were 0.71-0.85% in backfat and 0.32-0.40% in muscle. The highest total CLA percentage found was in mh/+, intermediate in +/+ and lowest in mh/mh animals (P

  • The influence of breed and mh-genotype on carcass conformation, meat physico-chemical characteristics, and the fatty acid profile of muscle from yearling bulls
    Meat science, 2005
    Co-Authors: Noelia Aldai, Antonio Martínez, Koldo Osoro, M. Oliván, Brendan Murray, Declan J. Troy, A.i. Nájera
    Abstract:

    Abstract The influence of breed and mh -genotype on carcass conformation, meat physico-chemical characteristics and the fatty acid profile of muscle were studied. Samples from 16 yearling bulls from “Asturiana de los Valles” (AV, n  = 12) and “Asturiana de la Montana” (AM, n  = 4) were collected. AV animals were classified into three groups according to the presence of the gene causing Double-Muscling (AV Double-muscled ( mh/mh ), n  = 4; AV heterozygous ( mh /+), n  = 4; AV normal (+/+), n  = 4). Double-muscled animals displayed better carcass traits, lower total fat (comprised of subcutaneous (SC), intermuscular (IT) and intramuscular (IM) deposits), higher lean, moisture and drip loss, and lighter meat than AV normal animals. Heterozygous animals showed intermediate characteristics. AM animals, being a more rustic and smaller breed, showed lower conformation, higher total fat (SC, IT and IM), lower moisture and darker meat. According to the intramuscular fatty acid profile, mh / mh animals showed a lower proportion of SFA and MUFA, and a higher proportion of PUFA with an equal proportion of CLA in total fatty acid content. The P/S ratio increased with increasing number of mh alleles (or Double-Muscling character), while no differences between animal groups were found for the n  − 6/ n  − 3 ratio.

  • Effect of muscular hypertrophy on physico-chemical, biochemical and texture traits of meat from yearling bulls.
    Meat science, 2004
    Co-Authors: M. Oliván, Antonio Martínez, Koldo Osoro, Carlos Sañudo, Begoña Panea, José Luis Olleta, María Del Mar Campo, M. Angels Oliver, X. Serra, Marta Gil
    Abstract:

    The effect of the presence of the Double-Muscling gene either homozygous (mh/mh) or heterozygous (mh/+) on the physico-chemical, biochemical and texture traits of Longissimus thoracis muscle of yearling bulls of the Asturiana de los Valles (AV) breed was studied. Meat of mh/mh bulls had lower amount of intramuscular fat (p

Manuel Juárez - One of the best experts on this subject based on the ideXlab platform.

  • Double Muscling character influences the trans 18 1 and conjugated linoleic acid profiles in concentrate fed yearling bulls
    Meat Science, 2010
    Co-Authors: Noelia Aldai, Michael E. R. Dugan, Manuel Juárez, Antonio Martínez, Koldo Osoro
    Abstract:

    Seventy-five yearling bulls of the "Asturiana de los Valles" northern-Spanish beef breed (Double-muscled, mh/mh, n=24; heterozygous, mh/+, n=26; normal, +/+, n=25) were produced under intensive conditions and the effects of Double-Muscling genotype on trans-18:1 and CLA isomer profiles were examined. Total trans-18:1 contents, measured as percentages of total fatty acid methyl esters, were 10.98-15.07% in backfat and 8.64-9.46% in muscle, and the major isomer was 10t-18:1 in all animals. In mh/+ animals, 11t-18:1 was the second most abundant trans isomer in muscle whereas in mh/mh and +/+ animals 11t-18:1 and 13t/14t-18:1 were relatively similar. Total CLA percentages were 0.71-0.85% in backfat and 0.32-0.40% in muscle. The highest total CLA percentage found was in mh/+, intermediate in +/+ and lowest in mh/mh animals (P<0.05). Heterozygous animals had significantly higher percentages of 9c,11t- (P<0.01), 11t,13c- (P<0.01) and 9c,11c-18:2 (P<0.05) and also significantly higher percentages of the sum of 9c,11t-/11t,13c-/11t,13t-18:2. Overall, mh/+ animals produced meat with a slightly better trans and CLA profile (i.e., less 10t-18:1 and more 11t-18:1 and 9c,11t-18:2) than other genotypes, however, further improvements would still be necessary to achieve a profile with a positive health image.

  • Double-Muscling character influences the trans-18:1 and conjugated linoleic acid profiles in concentrate-fed yearling bulls
    Meat science, 2009
    Co-Authors: Noelia Aldai, Michael E. R. Dugan, Manuel Juárez, Antonio Martínez, Koldo Osoro
    Abstract:

    Seventy-five yearling bulls of the "Asturiana de los Valles" northern-Spanish beef breed (Double-muscled, mh/mh, n=24; heterozygous, mh/+, n=26; normal, +/+, n=25) were produced under intensive conditions and the effects of Double-Muscling genotype on trans-18:1 and CLA isomer profiles were examined. Total trans-18:1 contents, measured as percentages of total fatty acid methyl esters, were 10.98-15.07% in backfat and 8.64-9.46% in muscle, and the major isomer was 10t-18:1 in all animals. In mh/+ animals, 11t-18:1 was the second most abundant trans isomer in muscle whereas in mh/mh and +/+ animals 11t-18:1 and 13t/14t-18:1 were relatively similar. Total CLA percentages were 0.71-0.85% in backfat and 0.32-0.40% in muscle. The highest total CLA percentage found was in mh/+, intermediate in +/+ and lowest in mh/mh animals (P

Michael E. R. Dugan - One of the best experts on this subject based on the ideXlab platform.

  • Double Muscling character influences the trans 18 1 and conjugated linoleic acid profiles in concentrate fed yearling bulls
    Meat Science, 2010
    Co-Authors: Noelia Aldai, Michael E. R. Dugan, Manuel Juárez, Antonio Martínez, Koldo Osoro
    Abstract:

    Seventy-five yearling bulls of the "Asturiana de los Valles" northern-Spanish beef breed (Double-muscled, mh/mh, n=24; heterozygous, mh/+, n=26; normal, +/+, n=25) were produced under intensive conditions and the effects of Double-Muscling genotype on trans-18:1 and CLA isomer profiles were examined. Total trans-18:1 contents, measured as percentages of total fatty acid methyl esters, were 10.98-15.07% in backfat and 8.64-9.46% in muscle, and the major isomer was 10t-18:1 in all animals. In mh/+ animals, 11t-18:1 was the second most abundant trans isomer in muscle whereas in mh/mh and +/+ animals 11t-18:1 and 13t/14t-18:1 were relatively similar. Total CLA percentages were 0.71-0.85% in backfat and 0.32-0.40% in muscle. The highest total CLA percentage found was in mh/+, intermediate in +/+ and lowest in mh/mh animals (P<0.05). Heterozygous animals had significantly higher percentages of 9c,11t- (P<0.01), 11t,13c- (P<0.01) and 9c,11c-18:2 (P<0.05) and also significantly higher percentages of the sum of 9c,11t-/11t,13c-/11t,13t-18:2. Overall, mh/+ animals produced meat with a slightly better trans and CLA profile (i.e., less 10t-18:1 and more 11t-18:1 and 9c,11t-18:2) than other genotypes, however, further improvements would still be necessary to achieve a profile with a positive health image.

  • Double-Muscling character influences the trans-18:1 and conjugated linoleic acid profiles in concentrate-fed yearling bulls
    Meat science, 2009
    Co-Authors: Noelia Aldai, Michael E. R. Dugan, Manuel Juárez, Antonio Martínez, Koldo Osoro
    Abstract:

    Seventy-five yearling bulls of the "Asturiana de los Valles" northern-Spanish beef breed (Double-muscled, mh/mh, n=24; heterozygous, mh/+, n=26; normal, +/+, n=25) were produced under intensive conditions and the effects of Double-Muscling genotype on trans-18:1 and CLA isomer profiles were examined. Total trans-18:1 contents, measured as percentages of total fatty acid methyl esters, were 10.98-15.07% in backfat and 8.64-9.46% in muscle, and the major isomer was 10t-18:1 in all animals. In mh/+ animals, 11t-18:1 was the second most abundant trans isomer in muscle whereas in mh/mh and +/+ animals 11t-18:1 and 13t/14t-18:1 were relatively similar. Total CLA percentages were 0.71-0.85% in backfat and 0.32-0.40% in muscle. The highest total CLA percentage found was in mh/+, intermediate in +/+ and lowest in mh/mh animals (P