Fibrolytic enzymes improving in vitro rumen degradability of tropical forages

Sakita, Gabriel Zanuto; Bompadre, Thiago Francisco Ventoso; Dineshkumar, D.; Lima, Paulo de Mello Tavares; Filho, Adibe Luiz Abdalla; Campioni, Tania Sila; Neto, Pedro de Oliva; Bremer‐Neto, Hermann; Louvandini, Hélder; Abdalla, Adibe Luiz

doi:10.1111/jpn.13373

Cited by 13 publications

(4 citation statements)

References 42 publications

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“…(2014) describe that the addition of exogenous enzymes promotes improvements in the digestibility parameters of roughages that present a high proportion of potentially digestible fibre fraction. In the current study, the fibrolytic enzyme presents high xylanase activity, which may have acted in the most digestible fractions of sugarcane, altering or weakening the cell wall structure, without reflecting on the significant effect on in vitro NDF digestibility (Giraldo et al ., 2008; Sakita et al ., 2020).…”

Section: Discussionmentioning

confidence: 99%

The effects of compound treatment of Aspergillus oryzae and fibrolytic enzyme on in vitro degradation, gas production and fermentative profile of maize silage and sugarcane silage

Souza

Sousa

et al. 2021

J. Agric. Sci.

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The present study was conducted to evaluate the effect of a live culture of Aspergillus oryzae (A; CCT4359) and fibrolytic enzyme (E; Fibrozyme Alltech Inc.) on fibre digestibility by a gas production bioassay and in vitro degradation of maize silage and sugarcane silage. A completely randomized design trial was performed to evaluate: A doses (0, 20, 60 and 100 mg/l), E doses (0, 160, 320 and 480 mg/l) and roughage source (R; maize and sugarcane silage) in a 4 × 4 × 2 factorial arrangement. The inclusion of increasing doses of A and E increased dry matter and neutral detergent fibre in vitro digestibility linearly, but for E this effect occurred only in maize silage. There was a linear increase in the potential for gas production at the highest dose of A only in sugarcane silage, with no effect on lag time (L). Increasing doses of E increased the volume of gases produced linearly, and a trend of linear reduction of L, regardless of the roughage. There was a linear reduction in ammonia-nitrogen concentration in response to increasing doses of A and E, and an increase in acetic acid concentration at the highest dose of A, regardless of roughage. The additives had no synergistic effect on gas production and digestibility, but were efficient in altering the fermentative pattern, demonstrating the potential to increase fibre degradation.

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Section: Discussionmentioning

confidence: 99%

The effects of compound treatment of Aspergillus oryzae and fibrolytic enzyme on in vitro degradation, gas production and fermentative profile of maize silage and sugarcane silage

Souza

Sousa

et al. 2021

J. Agric. Sci.

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“…The nutrition quality of forage diets influences ruminal functionality and digestibility. Therefore, understanding the bromatological profile of tropical grasses makes it easier to develop strategies that promote the reduction of enteric emissions (Rivera-Herrera et al 2017) and increase milk/meat productivity by area unit in livestock systems (Sakita et al 2020). The minimum protein requirement to keep a functional rumen in bovines, according to Gaviria et al (2015), is 8% CP.…”

Section: Resultsmentioning

confidence: 99%

Biological nitrification inhibition and forage productivity of Megathyrsus maximus in Colombian dry tropics

Carvajal‐Tapia¹,

Velasco²,

Villegas³

et al. 2021

Plant Soil Environ.

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Agronomic, nutritional, and environmental aspects are integrated to promote sustainable tropical grassland production. Biological nitrification inhibition (BNI) is a plant-based strategy to improve nitrogen use efficiency by grasses in which they suppress the pace of soil nitrification via exudation of inhibitory compounds. To evaluate the effect of BNI on the productive performance of Megathyrsus maximus under field conditions, we evaluated a collection of 27 germplasm accessions and commercial cultivars of the forage grass in the dry tropics of Colombia. We measured plant yield dry matter, nutrition quality parameters, and nitrification rates of soil at 22 months after pasture establishment. Our results highlighted germplasm accessions of superior agronomic performance (for dry matter production and nutrition quality) and high capacity to decrease nitrification. Although no relation was observed between agronomic aspects, nutritional aspects, and nitrification rates, we conclude that there is no agronomic or nutritional penalty on environmentally friendly grasses, and BNI could be adopted as a target trait in plant breeding programs toward the development of eco-efficient forages and contribute to the sustainable intensification of livestock systems.

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“…They indicated that hemicellulose was preferentially degraded by the enzymatic extracts. Fibrolytic enzymes pretreating the forage can weaken and/or degrade the lignin-hemicellulose-cellulose complex of the plant 36 . This loosening effect could facilitate the attachment of microorganisms to the substrate, leading to faster growth of microbial populations and increased fiber degradation 37 , 38 .…”

Section: Discussionmentioning

confidence: 99%

Use of exogenous fibrolytic enzymes and probiotic in finely ground starters to improve calf performance

Khademi

Hashemzadeh

Khorvash

et al. 2022

Sci Rep

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The present study investigated the effects of adding wheat straw treated with exogenous fibrolytic enzymes (EFE) and a probiotic supplement to finely ground starters on growth performance, rumen fermentation, behavior, digestibility, and health of dairy calves. A total of 48 Holstein dairy calves (39.8 ± 1.67 kg body weight) were randomly assigned to one of 4 nutritional treatments (n = 12 calves per treatment). The experiment was conducted in a 2 × 2 factorial arrangement of treatments consisting of two diets with or without EFE-treated wheat straw (2 g/day/calf) and diets with or without probiotics (2 g/day/calf). All calves were weaned on day 63 and remained in the study until day 84. The addition of EFE to wheat straw had no effect on starter feed intake, increased neutral detergent fiber (NDF) digestibility and recumbency, but decreased average daily gain (ADG) after weaning (240 g/d). The addition of probiotics to the diet had no effect on starter feed intake, improved feed efficiency, ADG (150 g/d), final weight (11.3 kg), and NDF digestibility, and decreased the ratio of acetate to propionate in the rumen. The addition of probiotics to starter feed for calves could improve their growth.

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Fibrolytic enzymes improving in vitro rumen degradability of tropical forages

Cited by 13 publications

References 42 publications

The effects of compound treatment of Aspergillus oryzae and fibrolytic enzyme on in vitro degradation, gas production and fermentative profile of maize silage and sugarcane silage

The effects of compound treatment of Aspergillus oryzae and fibrolytic enzyme on in vitro degradation, gas production and fermentative profile of maize silage and sugarcane silage

Biological nitrification inhibition and forage productivity of Megathyrsus maximus in Colombian dry tropics

Use of exogenous fibrolytic enzymes and probiotic in finely ground starters to improve calf performance

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