Effects of ensiling maize and sample conditioning on in situ rumen degradation of dry matter, starch and fibre

Peyrat, Julie; Nozière, Pierre; Morvan, Aline Le; Férard, Alexis; Protin, Pierre-Vincent; Baumont, René

doi:10.1016/j.anifeedsci.2014.06.017

Cited by 30 publications

(32 citation statements)

References 32 publications

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“…In our experiments, the hybrids of the flint type showed a higher content of NDF than those of the dent type (451 ± 46.3 vs. 427 ± 48.7 g/kg DM), but a lower content of starch (298 ± 38.4 vs. 323 ± 38.4 g/kg DM) whereas the differences in NDFD and OMD were not significant. The similar results were published by Peyrat et al (2014): NDFD was not significantly influenced by flint or dent type grain endosperm.…”

Section: Resultssupporting

confidence: 80%

“…The degree of maturity influenced neither NDFD nor OMD. Contrarily, Peyrat et al (2014) demonstrated in their study that maturity showed a small but significant impact on the total OMD in alimentary tract. The stay-green maize hybrids were cultivated to extend the harvesting period.…”

Section: Resultsmentioning

confidence: 91%

“…Their experiment was performed with a group of 20 multiparous Holstein cows fed on maize silage in the diet. Carpentier and Cabon (2011) and also Peyrat et al (2014) recommended that the DM content should be 300-350 g/kg.…”

Section: Resultsmentioning

confidence: 99%

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Evaluation of maize hybrids types harvested at the similar stage of maturity

Loučka¹,

Nedĕlník²,

Lang³

et al. 2015

PLANT SOIL ENVIRON

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The agricultural practice requires more detailed and accurate research data and information. For farmers, the right choice of a proper maize hybrid has a decisive importance. The properties of the hybrids differ above all depending on the earliness, the type of the plant (stay-green vs. normal ripening), the type of the grain (flint vs. dent) or the type of the recommended usage (silage making vs. grain production) as well as by their intertypes. However, under practical conditions, some properties of the hybrids as declared by their sellers are not manifested.The effects of the type of maize hybrids and their maturity stage on their yields and nutritional characteristics were presented by several authors, e.g. by Pilipavicius and Mikulioniene (2010) or Hetta et al. (2012). Cone et al. (2008) demonstrated that not only yields and nutritional parameters, but also the degree and the rate of in vitro rumen fermentation were significantly influenced by the growth stage and the content of dry matter (DM) in the entire plants at the moment of their harvest. For the same type of hybrid (i.e. stay-green) the stage of maturity of grain and the whole plant DM is closely related. When comparing with each other the different types of hybrids (e.g. stay-green and dry down), this relationship may be different. Differences in DM content, nutrients and digestibility are also given by proportion grain (ear) to the other parts of the plant. According to Ettle and Schwarz (2003), the constituents of the ear (dehusked) and residual plants are affected by maturity stage but not by type of hybrid.However, if the hybrids showed a different degree of earliness on the day of the harvesting, they may be considered to be at different stages of maturity showing different contents of DM. This fact could be the reason why the declared properties ABSTRACTThe objective of the experiments was to compare types of maize hybrids harvested at the similar stage of maturity, between one and two thirds of the milk line stage of grain. The study involved 9 hybrids with different parameters that were grown during a period of three subsequent years in two locations with different level of precipitation. Differences in terms of the content of dry matter between the hybrids at different timing of harvests were small (323 ± 22 g/kg), showing no statistical significance (P = 0.34). Comparing the early maturity hybrids with the medium early hybrids (P < 0.05), the former showed a lower content of starch (299 g/kg dry matter (DM)), and the latter showed a slightly higher value (312 g/kg DM) -while the measured proportion of neutral detergent fibre (NDF) among these two hybrids was 453 vs. 428 g/kg DM. Comparing the measured value of the normally ripening hybrids against the stay-green hybrids, the starch was 314 vs. 294 g/kg DM, and NDF was 434 vs. 451 g/kg DM, respectively. As for the comparison between the flint (vitreous) type of grain endosperm vs. dent (floury), measured value of the starch was 298 vs. 323 g/kg DM, and NDF was 451 vs. 427 g/kg DM, respe...

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 91%

See 1 more Smart Citation

Evaluation of maize hybrids types harvested at the similar stage of maturity

Loučka¹,

Nedĕlník²,

Lang³

et al. 2015

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

show abstract

“…Our objective was to harvest both hybrids for silage at the 2/3 milk line stage considered optimal for silage-making and which is recommended, for example, by Carpentier and Cabon (2011) and Peyrat et al (2014). So, we found no differences in DM between hybrids (P = 0.183).…”

Section: Resultsmentioning

confidence: 79%

Variation for in vivo digestibility in two maize hybrid silages

Loučka¹,

Tyrolová²,

Jančík³

et al. 2018

Czech J. Anim. Sci.

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Loučka R., Tyrolová Y., Jančík F., Kubelková P., Homolka P., Jambor V. (2018): Variation for in vivo digestibility in two maize hybrid silages. Czech J. Anim. Sci., 63, 17-23.The experiment was aimed at confirming that silages made of two very similar hybrids could have different in vivo digestibility, primarily amylase-treated neutral detergent fibre digestibility (aNDFD), which could strongly influence the result of the calculation of energy value of fodder. Both the stay-green whole-plant types were grown at the same locality during two years and harvested at the same days at two-thirds milk line maturity. In the two subsequent years, silages without preservatives were made of both hybrids tested. All silages were fermented for 90 days. The in vivo digestibility of silages was measured in digestion trials with six sheep. All silages had good fermentation quality, and no differences in that regard were found between hybrids or years (P > 0.05). Hybrid had stronger effect than year on all indicators of chemical composition and digestibility of nutrients other than dry matter (DM). Hybrid significantly affected all indicators measuring chemical composition and digestibility of nutrients other than DM (P = 0.18). The aNDFD was closely correlated with all other measures of nutrients digestibility (P < 0.01). The results confirm the importance of breeding hybrids and analyzing silages for aNDFD.

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“…() and Peyrat et al. (). Ensiling caused a decrease in aNDFom concentration; mainly plant enzymes degrade parts of the NDF and the resulting WSC are used as substrate by the micro‐organisms during ensiling as shown by Yahaya et al.…”

Section: Discussionmentioning

confidence: 98%

Effects of length of ensiling and maturity group on chemical composition and in vitro ruminal degradability of whole‐crop maize

Gerlach

Pfau

Pries

et al. 2018

Grass and Forage Science

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Nine hybrids (three maturity groups, dry matter 343 ± 5.6 g/kg) of whole‐crop maize were ensiled in eight replicates in laboratory‐scale silos. Each hybrid was sampled at harvest and after 30, 60, 90 and 120 days (d) of ensiling. Samples were analysed for chemical composition (proximate constituents, fermentation products and pH), starch, non‐protein N (NPN) and NH3‐N. Each sample and its neutral detergent fibre (NDF) fraction were incubated in the Hohenheim gas test system. In vitro gas production was measured after 0, 2, 4, 8, 12, 16, 24, 36, 48, 72 and 96 hr of incubation. Gas production of the neutral detergent soluble (NDS) fraction (mainly starch) was calculated using a curve subtraction method. Gas production dynamics over time were estimated using a nonlinear regression equation; afterwards, a two‐factorial analysis of variance (storage length, maturity group and their interaction) using the general linear models procedure was conducted. After 30 d, all silages were well fermented. Most fermentation products and proximate constituents only changed until 30 or maximum 60 d of ensiling. Only few changes in in vitro nutrient degradability were detected after the first 30 d or as influenced by maturity group. Ensiling per se increased the ruminal degradability of the NDS, but there was no further increase caused by a prolonged duration of storage. However, extensive changes in crude protein fractions occurred with a linear increase in NPN and NH3‐N compounds from 0 to 120 d of storage, indicating continual protein and amino acid degradation.

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Effects of ensiling maize and sample conditioning on in situ rumen degradation of dry matter, starch and fibre

Cited by 30 publications

References 32 publications

Evaluation of maize hybrids types harvested at the similar stage of maturity

Evaluation of maize hybrids types harvested at the similar stage of maturity

Variation for in vivo digestibility in two maize hybrid silages

Effects of length of ensiling and maturity group on chemical composition and in vitro ruminal degradability of whole‐crop maize

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