Fibrolytic enzyme supplementation through ruminal bolus on eating behavior, nutrient digestibility and ruminal fermentation in Jersey heifers fed either corn silage- or sugarcane silage-based diets

Gandra, Jefferson Rodrigues; Miranda, G.A.; Goes, Rafael Henrique de Tonissi e Buschinelli de; Takiya, Caio Seiti; Valle, Tiago A. Del; Oliveira, Euclides Reuter de; Freitas, J. E.; Gandra, E.R.S.; Araki, H.M.C.; Santos, Antonio Labrada

doi:10.1016/j.anifeedsci.2017.06.009

Cited by 20 publications

(13 citation statements)

References 30 publications

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“…The chemical compositions of date palm by-products in this study are similar to the results found by Genin et al (2004), Kholif et al (2015), and Boufennara et al (2016). The CP content of date palm by-products was generally low (CP < 6 % DM) especially for floral stems (CP = 2.5 % DM).…”

Section: Discussionsupporting

confidence: 87%

“…The date palm tree (Phoenix dactylifera) is the principal source of food for the human population of oases. Byproducts of this tree are used in ruminants' nutrition by local breeders (Genin et al, 2004). In recent years, many studies evaluated the chemical composition and nutritive value of these by-products.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, date kernels (DKs), floral stems (FSs), and palm fronds (PFs) are characterised by high levels of lignocellulose content, low protein content, low digestibility, and low palatability. Wasted dates (WDs) are characterised by low protein and lignocellulose content (Genin et al, 2004;Kholif et al, 2015;Boufennara et al, 2016;Azzaz et al, 2017). Many technologies have been employed to increase the nutritive values of poor-quality roughage.…”

Section: Introductionmentioning

confidence: 99%

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Influence of adding fibrolytic enzymes on the ruminal fermentation of date palm by-products

et al. 2019

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This study was conducted in order to assess the influence of four doses (0, 0.5, 1, and 2 mg (g dry matter)-normal1 of commercial fibrolytic enzymes (MAXFIBER-Inormal®, SHAUMANN GmbH, Wahlstedt, Germany) on in vitro fermentation of date palm (Phoenix dactylifera) by-products: date kernels, wasted dates, floral stems, and palm fronds. Rumen contents were obtained from two non-lactating Holstein cows. Enzyme supplementation to by-products was carried out 12 h prior to incubation.Compared to the control, the enzymatic supplementation quadratically increased the extent but not the gas production rate of date kernel fermentation. Indeed, the potential gas production increased notably by 14.8 % with the lowest enzymes dose following recorded gas production after 48, 72, and 96 h of incubation. The estimated organic-matter digestibility, metabolisable energy, and total volatile fatty acids in the incubation fluid tended to be increased with the lowest dose by 7.8 %, 8.4 %, and 13.9 % respectively. For the wasted dates, this feed additive tended to linearly increase the gas production rate of fermentation with the highest dose. On the other hand, this supplementation had no effect on the ruminal fermentation of the floral stems and palm fronds. The exogenous fibrolytic enzymes were more effective on fibrous but not on lignified date palm by-products.

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Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of adding fibrolytic enzymes on the ruminal fermentation of date palm by-products

et al. 2019

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“…O blend enzimático demonstrou mais efeitos positivos sobre a degradação das frações fibrosas do que a enzima xilanase isoladamente. O blend enzimático apresenta em sua composição três enzimas (xilanases, celulases e glucanases), o que pode explicar seu maior potencial na degradação dos polissacarídeos, aumentando a digestibilidade da FDN e consequentemente a degradação da MS. Resultados semelhantes foram encontrados por Gandra et al (2017), que constataram aumento da digestibilidade da MS e FDN em dieta a base de silagem de cana tratada com um produto enzimático contendo xilanase e celulase. De acordo com Martins et al (2007), além de auxiliar na quebra dos componentes da parede celular das forrageiras, e potencializar a atividade das enzimas endógenas, o uso de enzimas exógenas também aumenta a adesão de microrganismos à parede celular.…”

Section: Discussionunclassified

“…Apesar dos avanços da pesquisa, a digestibilidade das forragens continua a limitar a ingestão de energia disponível para os ruminantes (Beauchemin et al, 2003). A inclusão de enzimas fibrolíticas pode complementar as atividades de enzimas endógenas do rúmen, auxiliando na quebra de frações fibrosas dos alimentos (Martins et al, 2007;Gandra et al, 2017). Resultados como a melhoria da disponibilidade de nutrientes (Romero et al, 2015) e da degradação de frações fibrosas em forrageiras Ibañez et al, 2010) assim como aumento na produção de leite e teor de gordura (Lewis et al, 1996) e do ganho de peso em bovinos de corte (Beauchemin et al, 1995), comprovam o potencial de uso de preparações enzimáticas na dieta desses animais.…”

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Efeitos de enzimas fibrolíticas sobre a degradação in situ da matéria seca e da fibra de forrageiras

et al. 2018

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Resumo: Embora ruminantes aproveitem fibras dos alimentos, a degradação varia de acordo com a composição físico-química. Enzimas fibrolíticas tem sido utilizadas para aumentar a degradação ruminal de fibras, podendo otimizar o aproveitamento dos nutrientes. O objetivo deste estudo foi avaliar o efeito da enzima fibrolítica xilanase e de um blend enzimático contendo xilanase, celulase e glucanase, em alimentos volumosos: feno de alfafa (Medicago sativa), capim-Braquiária (Urochloa ruziziensis syn Brachiaria ruziziensis) cana-de-açúcar (Saccharum officinarum), capim-Mombaça (Megathyrsus maximus syn Panicum maximum cv. Mombaça) e silagem de milho (Zea mays). O delineamento experimental foi inteiramente casualizado com 5 repetições (vacas), para cada tratamento. Os tratamentos consistiram em uma pré-incubação por 12 horas em tampão de McDougall: 1) sem a adição de enzimas (CT); 2) com a adição de 200 mg/kg de matéria seca (MS) de amostra (XI); e com a adição de 200 mg kg -1 de MS de amostra (BL). Após a aplicação dos tratamentos, as amostras dos alimentos foram incubadas no rúmen das vacas, por 96 horas. O capim-Mombaça apresentou maiores degradações da MS e FDN que as demais forrageiras avaliadas. A xilanase tendeu a aumentar a degradação da fibra em detergente ácido (FDA) em relação ao controle. O blend enzimático aumentou a degradabilidade da MS e FDN, em relação ao CT e tendeu a aumentar a degradação da MS e da FDN em relação à XI. A adição do blend enzimático aumenta a degradação da MS e FDN, sendo uma estratégia enzimática recomendada na dieta de ruminantes.Palavras-chave: digestão ruminal, fibra em detergente neutro, incubação , xilanase Abstract: Although ruminants could utilize fiber of feeds, the degradation varies according to it physicochemical composition. Fibrolitic enzymes have been used to increase ruminal degradation of fibers, and can optimize the use of nutrients. The objective of this study was to evaluate the effect of the xylanase fibrolytic enzyme and an enzymatic blend containing xylanase, cellulase and glucanase in roughage: alfalfa hay (Medicago sativa), Brachiaria grass (Urochloa ruziziensis syn Brachiaria ruziziensis) sugarcane (Saccharum officinarum), Mombasa grass (Megathyrsus maximus syn Panicum maximum cv. Mombasa) and corn silage (Zea mays). The experimental design was completely randomized with 5 replicates (cows), for each treatment. Treatments consisted of a pre-incubation for 12 hours in McDougall's buffer: 1) without the addition of enzymes (CT); 2) with the addition of 200 mg xilanase per kg dry matter (DM) of sample (XI); and with the addition of 200 mg of enzymatic blend per kg sample MS (BL). After application of the treatments, the feed samples were incubated in the rumen of cows for 96 hours. Mombasa grass presented higher DM and NDF degradations than the other evaluated forages. The xylanase tended to increase the degradation of the acid detergent fiber (ADF) in relation to the control. The enzymatic blend increased degradation of DM and NDF in relation to the CT and tende...

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Fibrolytic enzyme supplementation through ruminal bolus on eating behavior, nutrient digestibility and ruminal fermentation in Jersey heifers fed either corn silage- or sugarcane silage-based diets

Cited by 20 publications

References 30 publications

Influence of adding fibrolytic enzymes on the ruminal fermentation of date palm by-products

Influence of adding fibrolytic enzymes on the ruminal fermentation of date palm by-products

Efeitos de enzimas fibrolíticas sobre a degradação in situ da matéria seca e da fibra de forrageiras

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