2013
DOI: 10.2527/jas.2012-5677
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Effect of maturity at harvest on yield, chemical composition, and in situ degradability for annual cereals used for swath grazing

Abstract: The objective of this study was to determine how harvest maturity of whole-crop cereals commonly used in swath grazing systems in western Canada affects yield, chemical composition, and in situ digestibility. We hypothesized that the increase in yield with advancing maturity would not offset the decline in digestibility and, thus, the yield of effectively degradable DM (EDDM) would decline with advanced stages of maturity. Four replicate plots of barley (Hordeum vulgare L.; cv. CDC Cowboy), millet (Panicum mil… Show more

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Cited by 44 publications
(51 citation statements)
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“…The same trends were also found by Koten et al (2014) that sorghum harvested at the stage of initiation of grain development had higher ash content compared with those harvested at further maturity (soft dough phase). This result was due to the increased starch content of grains during further generative stage (Marsalis et al, 2009) and the increased organic content such as starch in grain and sugar in the stem as an accumulation result of photosynthesis so that the inorganic matter (ash) was measured lower (Rosser, 2013).…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…The same trends were also found by Koten et al (2014) that sorghum harvested at the stage of initiation of grain development had higher ash content compared with those harvested at further maturity (soft dough phase). This result was due to the increased starch content of grains during further generative stage (Marsalis et al, 2009) and the increased organic content such as starch in grain and sugar in the stem as an accumulation result of photosynthesis so that the inorganic matter (ash) was measured lower (Rosser, 2013).…”
Section: Discussionmentioning
confidence: 99%
“…Qu et al (2014) stated that the decrease in plant fiber content at soft dough phase would increase in vitro DMD. However, Rosser et al (2013) stated that further maturity of forage crops did not reduce in vitro OMD.…”
Section: Discussionmentioning
confidence: 99%
“…In its turn, culms and leaves of quackgrass had higher content of NFS than wheatgrass (by 1.4, 3.2%) and smooth brome by 3.7 and 3.8%, respectively. Vegetation phase has a great influence on the chemical composition of crops (Rosser et al, 2013).…”
Section: Asianmentioning
confidence: 99%
“…Samples were then composited by period and sent to Cumberland Valley Analytical Services (CVAS, Hagerstown, MD, USA) for chemical analysis as described by Rosser et al (2013) except ether extract that was determined with acid hydrolysis (AOAC 2005; Methods 922.06 and 954.02) to ensure adequate recovery with processed feeds containing a substantial lipid content. Net energy values of feed were calculated by the commercial lab using equations described in the NRC (2001) and also calculated based on animal performance as described by Zinn and Shen (1998) and Zinn et al (2002).…”
Section: Studymentioning
confidence: 99%