Proteolysis and Fermentation of Grain-Corn Ensiled at Several Moisture Levels and Under Several Simulated Storage Methods

Baron, V. S.; Stevenson, K. R.; Buchanan-Smith, J. G.

doi:10.4141/cjas86-047

Cited by 43 publications

(48 citation statements)

References 22 publications

(6 reference statements)

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“…A higher concentration of lactic acid was found in silages at an earlier maturity stage. It has been demonstrated that a lower percentage of DM, low pH and a higher concentration of WSC in immature crops increase the production of organic acids in produced silage (Goodrich et al 1975;Baron et al 1986;Bal et al 1997). Lactic and acetic acid concentrations were higher in inoculated silages than in the respective control silage.…”

Section: Discussionmentioning

confidence: 99%

Ensiling corn silage with different levels of a multi-species lactic acid bacteria inoculant

2014

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Abstract.A multi-species lactic acid bacterial inoculant (Lactisil maize, LM) was applied to whole-crop corn at different maturities in laboratory silos, to evaluate its effects on biochemical characteristics and aerobic stability. The corn crop was harvested at hard dough (HD, 253.1 g/DM kg), one-third milkline (ML, 293.7 g/DM kg) and one-third milkline with a killing frost (MLF, 297.6 g/DM kg). Crops were chopped to a 2.5-cm theoretical cut length, subsampled and treated with two levels of inoculant (LB1 = 1.5 · 10 5 cfu/g forage, LB2 = 3 · 10 5 cfu/g forage) or untreated (WO). The chemical composition of MLF crops was very similar to that of ML crops. However, lower (P < 0.01) numbers of lactic acid bacteria and higher numbers of yeast were enumerated in MLF than in ML crops. Higher percentages of DM and neutral detergent fibre and higher pH, but lower (P < 0.01) concentrations of water soluble carbohydrate and crude protein were measured in ML and MLF crops than in HD crops. Application of the inoculant increased (P < 0.01) concentrations of volatile fatty acids, neutral detergent fibre and acid detergent fibre in silages. Lactic acid concentration increased (P < 0.01) in HD treatments with an increasing level of inoculant. In contrast, the highest (P < 0.01) lactic acid concentration was measured in LB1 treatment compared with WO and LB2 in ML and MLF silages. Silages prepared from ML and MLF crops had higher (P < 0.01) lactic and acetic acid concentrations but lower (P < 0.01) butyric acid concentrations than did those prepared from HD. The pH in LB1 and LB2 silages was higher (P < 0.01) than that measured in WO silages. Aerobic stability was not influenced by inoculant treatment but low-DM silages were more (P < 0.01) resistant to spoilage. Frost-killed corn crops had a good potential to produce well fermented silage. Using LM resulted in silages with slightly higher fermentation products but it failed to improve aerobic stability of silage after 120 days of ensiling. These results indicated that inoculation of corn crops with LM for a short-duration ensilage period cannot enhance aerobic stability of silages due to insufficient acetic acid production from lactic acid conversion.Additional keywords: aerobic stability, frost-killed corn, heterofermentative fermentation, homofermentative lactic acid bacteria, Lactobacillus buchneri, maturity stage.

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Section: Discussionmentioning

confidence: 99%

Ensiling corn silage with different levels of a multi-species lactic acid bacteria inoculant

2014

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“…Esse valor indica que o a condição da pastagem não oferecia oferta adequada de folhas. Oferta de forragem 2 a 3 vezes superiores ao consumo são sugeridos para maximizar o desempenho animal (HODGSON, 1990;BARGO et al, 2003 (PEREIRA et. al.…”

Section: Resultsunclassified

“…Também ocorre aumento da área superficial dos grãos sujeita ao ataque microbiano e principalmente, ocorre o rompimento da densa matriz proteica que envolve os grânulos de amido do grão, resultando em maior digestão do amido no trato digestivo dos bovinos (THEURER et al 1999;SODERLUND, 2006 (BARON et al, 1986;ARRIGONI et. al..,1998), que consequentemente, pode promover a elevação no ganho de peso e/ou na eficiência alimentar dos animais (GOODRICH et al, 1975;HENRIQUE et al, 2007;BASALAN, 2013 (THEURER et al, 1999;LOZANO et al, 2000).…”

Section: Revisão Bibliográficaunclassified

Processamento de grãos de milho para vacas leiteiras em pastagem tropical

Batalha¹

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“…Adicionalmente, a proteólise é também um mecanismo intrínseco da fermentação, o que resulta em degradação de proteínas do endosperma (BARON et al, 1986 para milho duro e milho dentado respectivamente. Esta redução é independente do genótipo e é ligada, em grande parte, à diminuição da proporção de amido rapidamente degradável (PHILIPPEAU et al, 1996).…”

Section: Discussionunclassified

“…Enzimas bacterianas são apontadas como responsáveis pela proteólise da matriz proteica que envolve os grânulos de amido (BARON et al, 1986).…”

Section: Amidounclassified

Produção, composição, consumo e digestibilidade em vacas recebendo milho reidratado e ensilado com silagem de cana de açúcar como volumoso

Arcari¹

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replacement. Cows that were fed diet 100% replacement had higher milk yield, fat corrected milk yield, fat yield, protein, casein and lactose higher compared to the control diet. The apparent digestibility of dry matter, ether layer, total carbohydrates, no fiber carbohydrates, organic matter, crude protein and starch was higher in cows fed the diet with 100%replacement diet compared with 0% replacement of SRM by DGC. The relative production of propionic acid was higher and the concentration of NH 3 -N was lower 3 h after feeding in ruminal fluid for cows fed the diet 100% replacement diet compared with 0% replacement.The relative production of propionic acid was higher and aconcentração of NH 3 -N was lower 3 hours after feeding in ruminal fluid for cows fed diet 100 % replacement diet cm compared to 0 % replacement. The time of ensiling progressively operates the degradation rate of MS MRE. Also complete replacement of DGC by REC in the diet of dairy cows increased intake, digestibility, milk yield and solids decreased the ammonia concentration and increased the proportion of propionic acid in the rumen fluid.

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Proteolysis and Fermentation of Grain-Corn Ensiled at Several Moisture Levels and Under Several Simulated Storage Methods

Cited by 43 publications

References 22 publications

Ensiling corn silage with different levels of a multi-species lactic acid bacteria inoculant

Ensiling corn silage with different levels of a multi-species lactic acid bacteria inoculant

Processamento de grãos de milho para vacas leiteiras em pastagem tropical

Produção, composição, consumo e digestibilidade em vacas recebendo milho reidratado e ensilado com silagem de cana de açúcar como volumoso

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