Chemical composition, in vitro dry matter digestibility and ruminal degradation of Napier grass (Pennisetum purpureum (L.) Schumach.) mixed with different levels of Sesbania sesban (L.) Merr.

The research submitted samples from stems and leaf blades from tree genotypes of Pennisetum purpureum called 93-32-02, 92-70-02, and 91-06-02 (EMBRAPA - Dairy cattle) and elephant grass cv. Napier (reference cultivar) to the chemical, anatomical evaluations, and in vitro dry matter digestibility (IVDMD) measurement. The anatomical characteristics of the stems and leaf blades, the chemical composition, and the IVDMD of these genotypes at 70 days of re-growth were correlated. Concerning IVDMD, the data highlighted differences, and the cultivar Napier presented the smallest value. Digital images obtained by light microscopy from cross-section reveal that all the stem and leaf blade have similar structural organization. Quantitative differences were verified mainly in the stem. The leaves displayed differences only in the mesophyll thickness. The genotypes showed higher potential in the rainy season since they had the largest IVDMD when compared to the cultivar Napier.

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Variation in growth, yield, chemical composition andin vitro dry matter digestibility of Napier grass accessions (Pennisetum purpureum)

Tropical Science ◽

10.1002/ts.51 ◽

2005 ◽

Vol 45 (2) ◽

pp. 67-73 ◽

Cited By ~ 6

Author(s):

Tessema Zewdu

Keyword(s):

Chemical Composition ◽

Dry Matter ◽

Growth Yield ◽

Napier Grass ◽

Pennisetum Purpureum ◽

Dry Matter Digestibility

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In sacco dry matter and nitrogen degradation and their relationship with in vitro dry matter digestibility of Napier grass (Pennisetum purpureum Schumach.) as influenced by height of plant at cutting

Australian Journal of Agricultural Research ◽

10.1071/ar01018 ◽

2002 ◽

Vol 53 (1) ◽

pp. 7 ◽

Cited By ~ 2

Author(s):

Tessema Zewdu ◽

Robert Baars ◽

Alemu Yami ◽

Dawit Negassa

Keyword(s):

Dry Matter ◽

Block Design ◽

Factorial Experiment ◽

Napier Grass ◽

Pennisetum Purpureum ◽

Dry Matter Digestibility ◽

Bacterial Inoculum ◽

And Storage ◽

In Sacco

In vitro dry matter digestibility (IVDMD) as well as in sacco rumen dry matter degradability (DMD) and nitrogen degradability (ND) studies of Napier grass (Pennisetum purpureum) were carried out using a 3 3 factorial experiment arranged in a randomised complete block design with 3 replications. The treatments were 3 levels of nitrogen (N) fertiliser (0, 46, bacterium Synergistes jonesii is known to degrade these compounds and inoculation of the bacterium into the rumen protects cattle against mimosine and DHP toxicity. We report on the development, production, and storage of an in vitro, fermentor-based, mixed bacterial inoculum, which includes S. jonesii, for administration to cattle. This technique may be applicable to the production and delivery of other live, anaerobic, bacterial inocula for use in animal agriculture.

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Nutritional value, fermentation losses and aerobic stability of elephant grass (Pennisetum purpureum Schum.) silage treated with exogenous fibrolytic enzymes

Acta Scientiarum Animal Sciences ◽

10.4025/actascianimsci.v42i1.48272 ◽

2020 ◽

Vol 42 ◽

pp. e48272

Author(s):

Maikon Figueredo Lemos ◽

Alexandro Pereira Andrade ◽

Pedro Henrique Ferreira da Silva ◽

Camila Oliveira Santos ◽

Caio Felipe Barros Souza ◽

...

Keyword(s):

Chemical Composition ◽

Dry Matter ◽

Nutritional Value ◽

Pennisetum Purpureum ◽

Elephant Grass ◽

Fibrolytic Enzymes ◽

Grass Silage ◽

Aerobic Stability ◽

Pennisetum Purpureum Schum

The aim of this study was to evaluate nutritional value, fermentation losses, and aerobic stability of elephant grass silage (Pennisetum purpureum Schum.) treated with exogenous fibrolytic enzymes. The experiment was conducted in a completely randomized design with four replicates (experimental silos) and five levels of fibrolytic enzymes (0, 1.5, 3.0, 4.5 and 6.0%). For this, the elephant grass was ensiled at 70 days of age in plastic buckets with 20L capacity. Silos were opened 60 days after sealing. Analyses were made for chemical composition, in vitro dry matter digestibility (IVDMD), effluent losses (EL), gas losses (GL) and dry matter recovery (DMR), as well as the aerobic stability of the silage. Data were analyzed with PROC REG of SAS® University, at 5% probability. There was an increase in IVDMD content (p < 0.0001) and reduction in NDF and ADF contents (p < 0.0001) according to enzyme levels. These results were related to the increase in the degradation of fiber fractions. There were higher EL (p = 0.0062) as a function of enzyme levels and aerobic deterioration after silo opening, at all levels tested. Thus, it can be concluded that the exogenous fibrolytic enzymes change the chemical composition of elephant grass silage, and increase its digestibility and nutritional value. Moreover, when used alone as an additive, fibrolytic enzymes are not able to recover all dry matter of this silage (with effluent and gas losses), and are not able to maintain aerobic stability in the first hours after opening the silos.

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Chemical composition, in vitro dry matter digestibility and in sacco degradability of selected browse species used as animal feeds under semi-arid conditions in Northern Ethiopia

Agroforestry Systems ◽

10.1007/s10457-010-9295-x ◽

2010 ◽

Vol 80 (2) ◽

pp. 173-184 ◽

Cited By ~ 10

Author(s):

Solomon Melaku ◽

Teferi Aregawi ◽

Lisanework Nigatu

Keyword(s):

Chemical Composition ◽

Dry Matter ◽

Northern Ethiopia ◽

Dry Matter Digestibility ◽

Arid Conditions ◽

Browse Species ◽

Semi Arid ◽

In Sacco Degradability ◽

In Sacco

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Yield and nutritional value of BRS Capiaçu grass at different regrowth ages

Semina Ciências Agrárias ◽

10.5433/1679-0359.2019v40n5p2045 ◽

2019 ◽

Vol 40 (5) ◽

pp. 2045 ◽

Cited By ~ 1

Author(s):

Flávio Pinto Monção ◽

Marco Aurélio Moraes Soares Costa ◽

João Paulo Sampaio Rigueria ◽

Marielly Maria Almeida Moura ◽

Vicente Ribeiro Rocha Júnior ◽

...

Keyword(s):

Dry Matter ◽

Northern Region ◽

Matter Content ◽

Neutral Detergent Fiber ◽

Pennisetum Purpureum ◽

In Vitro Digestibility ◽

Dry Matter Content ◽

Elephant Grass ◽

Dry Matter Digestibility

The objective was to evaluate the productivity, chemical composition, ruminal degradability of dry matter and digestibility of BRS capiaçu grass (Pennisetum purpureum Schum.) managed at five regrowth ages. A completely randomized design with ten replications was used in the BRS capiaçu elephant grass subjected to five cutting intervals (30, 60, 90, 120 and 150 days) in the summer, making a total of 50 plots with a useful area of 4 x 2 m. There were daily increases in the dry matter production in the order of 382 kg ha-1, with 49,859 kg ha-1 being produced at 150 regrowth days. The dry matter content and organic matter linearly increased (P < 0.01) at different regrowth ages. The crude protein content, in vitro dry matter digestibility and in vitro digestibility of neutral detergent fiber linearly reduced (P < 0.01) 0.037%, 0.196% and 0.256% per day, respectively. Potential degradability of dry matter decreased from 68.9% at 30 days to 44.7% at 150 regrowth days (0.194 percentage units per day). The rate of degradation of fraction B 'c' was not modified (P = 0.94), averaging 1.46% hour-1. In the cultivation of BRS capiaçu elephant grass in the summer season, in the northern region of Minas Gerais, the age for harvesting between 90 and 120 days of regrowth is recommended.

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