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Acid Detergent Fiber

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Hussein Abdelhaleem – One of the best experts on this subject based on the ideXlab platform.

  • variation in feed quality traits for beef cattle in steptoe morex barley population
    Molecular Breeding, 2012
    Co-Authors: Hussein Abdelhaleem, J G P Owma, Lisa Surbe, Tom Lake

    Abstract:

    Barley is a major feed source for livestock in the western regions of North America. Feed quality of beef cattle has been neglected as a selection criterion because of lack of understanding of the feed characteristics that could be responsive to selection and would improve feedlot performance. A Steptoe × Morex population was planted in irrigated and rain-fed environments, and collected data were used to evaluate the genetic variation in dry matter and starch digestibilities, Acid Detergent Fiber, protein and starch contents, and to map quantitative trait loci controlling the variation in these traits. Transgressive genotypes indicate the wide genetic variation of these traits. High heritability estimates for these traits suggest that early selection for these traits during breeding would be achievable. A total of 32 main effect QTL and five epistatic QTL were identified which conditioned feed traits on different barley chromosomes. QTL for Acid Detergent Fiber and starch contents overlapped on chromosome 6H at the Nar7 locus. Tight negative correlation between the two traits suggest the usability of Nar7 as anchor marker in marker-assisted selection programs to develop barley with low Acid Detergent Fiber and high starch content.

  • quantitative trait loci of Acid Detergent Fiber and grain chemical composition in hulled hull less barley population
    Euphytica, 2010
    Co-Authors: Hussein Abdelhaleem, J G P Bowman, Michael J. Giroux, Vladimir Kanazin, Hope Talbert, Lisa Surber, Tom Blake

    Abstract:

    Cultivated barley is the major livestock feed grain in the Northern Plains and Northwestern United States due to the fact that its short growing season and limited rainfall limit the planting and production of corn. Starch and Fiber content play a significant role in feedlot performance of animals raised on barley feed. To study the underlying genetic locations and mechanisms for these traits, a recombinant inbred line population was derived from a cross between the hulled barley cultivar Valier and a hull-less Swiss landrace line, PI370970. Valier has a high Acid Detergent Fiber content (ADF) and low starch and protein while PI370970 contains low ADF and high starch and protein content. To detect associated QTLs, data were collected and analyzed from irrigated and rain-fed environments. A total of 30 main effect QTLs and four epistatic QTLs were identified which conditioned ADF, starch and protein content under rain-fed, irrigated and combined analyses. These QTLs were located on chromosomes 2H, 3H, 5H, 6H and 7H. Major ADF and starch QTL were identified on chromosome 7H near the nud locus (the locus controlling hulled vs. hull-less caryopsis). High heritability estimates for both ADF and starch content suggest that early selection for these traits during breeding would be productive. Low ADF-QTL were independently verified in a second population in a different genetic background.

Tom Blake – One of the best experts on this subject based on the ideXlab platform.

  • Variation in feed quality traits for beef cattle in Steptoe × Morex barley population
    Molecular Breeding, 2011
    Co-Authors: Hussein Abdel-haleem, Lisa Surber, J G P Bowman, Tom Blake

    Abstract:

    Barley is a major feed source for livestock in the western regions of North America. Feed quality of beef cattle has been neglected as a selection criterion because of lack of understanding of the feed characteristics that could be responsive to selection and would improve feedlot performance. A Steptoe × Morex population was planted in irrigated and rain-fed environments, and collected data were used to evaluate the genetic variation in dry matter and starch digestibilities, Acid Detergent Fiber, protein and starch contents, and to map quantitative trait loci controlling the variation in these traits. Transgressive genotypes indicate the wide genetic variation of these traits. High heritability estimates for these traits suggest that early selection for these traits during breeding would be achievable. A total of 32 main effect QTL and five epistatic QTL were identified which conditioned feed traits on different barley chromosomes. QTL for Acid Detergent Fiber and starch contents overlapped on chromosome 6H at the Nar7 locus. Tight negative correlation between the two traits suggest the usability of Nar7 as anchor marker in marker-assisted selection programs to develop barley with low Acid Detergent Fiber and high starch content.

  • quantitative trait loci of Acid Detergent Fiber and grain chemical composition in hulled hull less barley population
    Euphytica, 2010
    Co-Authors: Hussein Abdelhaleem, J G P Bowman, Michael J. Giroux, Vladimir Kanazin, Hope Talbert, Lisa Surber, Tom Blake

    Abstract:

    Cultivated barley is the major livestock feed grain in the Northern Plains and Northwestern United States due to the fact that its short growing season and limited rainfall limit the planting and production of corn. Starch and Fiber content play a significant role in feedlot performance of animals raised on barley feed. To study the underlying genetic locations and mechanisms for these traits, a recombinant inbred line population was derived from a cross between the hulled barley cultivar Valier and a hull-less Swiss landrace line, PI370970. Valier has a high Acid Detergent Fiber content (ADF) and low starch and protein while PI370970 contains low ADF and high starch and protein content. To detect associated QTLs, data were collected and analyzed from irrigated and rain-fed environments. A total of 30 main effect QTLs and four epistatic QTLs were identified which conditioned ADF, starch and protein content under rain-fed, irrigated and combined analyses. These QTLs were located on chromosomes 2H, 3H, 5H, 6H and 7H. Major ADF and starch QTL were identified on chromosome 7H near the nud locus (the locus controlling hulled vs. hull-less caryopsis). High heritability estimates for both ADF and starch content suggest that early selection for these traits during breeding would be productive. Low ADF-QTL were independently verified in a second population in a different genetic background.

  • Quantitative trait loci of Acid Detergent Fiber and grain chemical composition in hulled × hull-less barley population
    Euphytica, 2009
    Co-Authors: Hussein Abdel-haleem, J G P Bowman, Michael J. Giroux, Vladimir Kanazin, Hope Talbert, Lisa Surber, Tom Blake

    Abstract:

    Cultivated barley is the major livestock feed grain in the Northern Plains and Northwestern United States due to the fact that its short growing season and limited rainfall limit the planting and production of corn. Starch and Fiber content play a significant role in feedlot performance of animals raised on barley feed. To study the underlying genetic locations and mechanisms for these traits, a recombinant inbred line population was derived from a cross between the hulled barley cultivar Valier and a hull-less Swiss landrace line, PI370970. Valier has a high Acid Detergent Fiber content (ADF) and low starch and protein while PI370970 contains low ADF and high starch and protein content. To detect associated QTLs, data were collected and analyzed from irrigated and rain-fed environments. A total of 30 main effect QTLs and four epistatic QTLs were identified which conditioned ADF, starch and protein content under rain-fed, irrigated and combined analyses. These QTLs were located on chromosomes 2H, 3H, 5H, 6H and 7H. Major ADF and starch QTL were identified on chromosome 7H near the nud locus (the locus controlling hulled vs. hull-less caryopsis). High heritability estimates for both ADF and starch content suggest that early selection for these traits during breeding would be productive. Low ADF-QTL were independently verified in a second population in a different genetic background.

Tom Lake – One of the best experts on this subject based on the ideXlab platform.

  • variation in feed quality traits for beef cattle in steptoe morex barley population
    Molecular Breeding, 2012
    Co-Authors: Hussein Abdelhaleem, J G P Owma, Lisa Surbe, Tom Lake

    Abstract:

    Barley is a major feed source for livestock in the western regions of North America. Feed quality of beef cattle has been neglected as a selection criterion because of lack of understanding of the feed characteristics that could be responsive to selection and would improve feedlot performance. A Steptoe × Morex population was planted in irrigated and rain-fed environments, and collected data were used to evaluate the genetic variation in dry matter and starch digestibilities, Acid Detergent Fiber, protein and starch contents, and to map quantitative trait loci controlling the variation in these traits. Transgressive genotypes indicate the wide genetic variation of these traits. High heritability estimates for these traits suggest that early selection for these traits during breeding would be achievable. A total of 32 main effect QTL and five epistatic QTL were identified which conditioned feed traits on different barley chromosomes. QTL for Acid Detergent Fiber and starch contents overlapped on chromosome 6H at the Nar7 locus. Tight negative correlation between the two traits suggest the usability of Nar7 as anchor marker in marker-assisted selection programs to develop barley with low Acid Detergent Fiber and high starch content.