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Effect of maize kernel endosperm type and maturity stage on ruminal in situ degradability and post-ruminal in vitro dry matter and starch digestibility

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F16%3AN0000076" target="_blank" >RIV/00027014:_____/16:N0000076 - isvavai.cz</a>

  • Alternative codes found

    RIV/26296080:_____/16:N0000076

  • Result on the web

    <a href="http://www.agriculturejournals.cz/publicFiles/192485.pdf" target="_blank" >http://www.agriculturejournals.cz/publicFiles/192485.pdf</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.17221/62/2015-CJAS" target="_blank" >10.17221/62/2015-CJAS</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Effect of maize kernel endosperm type and maturity stage on ruminal in situ degradability and post-ruminal in vitro dry matter and starch digestibility

  • Original language description

    The objective of this study was to evaluate the interaction effect of maize grain texture (dent vs semi-flint) and two different stages of maturity (1/2 vs 3/4 milk line) on ruminal starch degradability and total tract digestibility using in situ and combined in situ-in vitro methods, respectively. The content of whole plant dry matter was 324.6 vs 399.5 g/kg (1/2 vs 3/4 milk line, respectively) for dent maize and 330.2 vs 401.3 g/kg for semi-flint maize. Organic nutrients (neutral detergent fibre, crude protein, ether extract, starch), 1000-grain weight, vitreousness, and mean particle size were determined. The evaluation was performed using two non-lactating Holstein cows fitted with ruminal cannulae. Effective degradability of dry matter and starch was calculated at ruminal outflow rates of 4, 6, and 8%/h. Vitreousness was lower for dent than for semi-flint grain, averaging 65.6% and 74.3% (P < 0.001). Ground dent maize grain showed lower mean particle size than did that of semi-flint maize (1.76 vs 1.88 mm, respectively, P < 0.001). Effective starch degradability calculated for the medium outflow rate (6%/h) was 69.1% vs 65.3% (P < 0.01) for dent and semi-flint maize and 69.0% vs 65.4% (P < 0.01) for lower (1/2 milk line) and higher (3/4 milk line) maturity, respectively. Higher (P < 0.001) mean starch total tract digestibility was found for dent maize (88.5%) than for semi-flint maize (82.5%) and for kernels harvested at 1/2 milk line (87.4%) than for those harvested at 3/4 milk line (83.6%, P < 0.001). Small differences in grain texture and silage maturity stage significantly influenced ruminal in situ degradability and total tract in situ-in vitro dry matter and starch digestibility.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    GH - Nutrition of farm animals

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/QJ1210128" target="_blank" >QJ1210128: New national feed quality evaluation system</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2016

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Czech Journal of Animal Science

  • ISSN

    1212-1819

  • e-ISSN

  • Volume of the periodical

    61

  • Issue of the periodical within the volume

    8

  • Country of publishing house

    CZ - CZECH REPUBLIC

  • Number of pages

    9

  • Pages from-to

    351-359

  • UT code for WoS article

    000382556400002

  • EID of the result in the Scopus database