scholarly journals Chemical Composition and Energy Yield of Elephant-Grass Biomass as Function of Five Different Production Ages

2017 ◽  
Vol 10 (1) ◽  
pp. 343
Author(s):  
Rafael Souza Freitas ◽  
Tatiane Da Costa Barbé ◽  
Rogério Figueiredo Daher ◽  
Ana Kesia Faria Vidal ◽  
Wanessa Francesconi Stida ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Polynomial Regression ◽  
Animal Feed ◽  
Neutral Detergent Fiber ◽  
Energy Yield ◽  
Elephant Grass ◽  
Randomized Design ◽  
Two Factors ◽  
Harvest Intervals ◽  
Second Degree

Elephant grass has high biomass production, with qualities suitable for conversion into bioenergy, but has long been used exclusively for animal feed and only in recent years has it become an energetic alternative. Therefore, it is necessary to select genotypes with potential for energy production. This study evaluated the effect of five harvest times (8, 12, 16, 20, and 24 weeks) on the yield and chemical composition related to biomass quality through combined polynomial regression analyses of the following elephant grass genotypes: Cubano Pinda, Mercker 86-México, Pusa Napier n°1, Mole de Volta Grande, P-241-Piracicaba, and King Grass. A completely randomized design with three replicates, in a split-plot arrangement, was adopted, including two factors (plots = genotypes, subplots = harvest times). The evaluated variables were whole-plant dry matter yield, in t ha-1 (DMY), percentage of neutral detergent fiber (%NDF), and percentage of acid detergent fiber (%ADF). The elephant-grass genotypes Cubano de Pinda, Mercker 86-México, and P-241-Piracicaba showed a linear first-degree effect as a function of the harvest intervals, indicating that they did not reach their maximum production potential. Genotypes Pusa Napier n°1, Mole de Volta Grande, and King Grass, in turn, had a linear second-degree effect. For the NDF variable, all genotypes showed a significant linear second-degree effect as a function of the harvest intervals, except P-241-Piracicaba, for which no regression was observed. For this genotype, there was a significant linear first-degree effect on the %ADF variable.

scholarly journals Chemical composition of elephant grass silages supplemented with different levels of dehydrated cashew bagasse

2016 ◽  
Vol 37 (2) ◽  
pp. 997 ◽  
Author(s):  
Danillo Glaydson Farias Guerra ◽  
Isaac Sydney Alves da Silva Maia ◽  
Alexandre Paula Braga ◽  
Liz Carolina da Silva Lagos Cortes Assis ◽  
Jesane Alves de Lucena ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Crude Protein ◽  
Linear Growth ◽  
Neutral Detergent Fiber ◽  
Elephant Grass ◽  
Total Carbohydrate ◽  
Nitrogen Levels ◽  
Total Carbohydrate Content ◽  
Randomized Design ◽  
Different Levels

The objective of the present study was to evaluate the chemical composition of elephant grass silages supplemented with different levels dried cashew bagasse (DCB). Our experiment used a randomized design replicated four times, each replicate consisting of the following five treatments: 100% elephant grass; 95% elephant grass + 5% DCB; 90% elephant grass + 10% DCB; 85% elephant grass + 15% DCB; and 80% elephant grass + 20% DCB. The elephant grass was cut manually to a residual height of 5 cm at 80 days of age, and cashew bagasse was obtained from the processing of cashew stalks used in fruit pulp manufacturing in Mossoró/RN. Plastic buckets were used as experimental silos, and 90 days after ensiling the experimental silos were opened and the contents analyzed. The addition of dried cashew bagasse to silage linearly increased the levels of dried matter and crude protein by 0.59% and 0.13%, respectively, for each 1% addition (P < 0.05). The neutral detergent fiber and acid detergent content of the silages was reduced by 0.22% and 0.09%, respectively, for each 1% addition of the bagasse. The total carbohydrate content was not influenced by the bagasse addition (P > 0.05), and averaged 82.29%. The levels of non-fiber carbohydrate showed linear growth (P < 0.05) as the dehydrated cashew bagasse was added, and pH and ammoniacal nitrogen levels were reduced. The addition of the dehydrated bagasse to elephant grass silage improves its chemical composition, and it can be effectively added up to the level of 20%.

scholarly journals Fermentation characteristics and nutritional quality of elephant grass silage added the buriti fruit peel

2017 ◽  
Vol 38 (2) ◽  
pp. 931 ◽  
Author(s):  
Raimundo Ribeiro Ferreira ◽  
Leilson Rocha Bezerra ◽  
Carlo Aldrovandi Torreão Marques ◽  
Jacira Neves da Costa Torreão ◽  
Ricardo Loiola Edvan ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Dry Matter ◽  
Insoluble Fraction ◽  
Neutral Detergent Fiber ◽  
Content Increase ◽  
Elephant Grass ◽  
Fruit Peel ◽  
Grass Silage ◽  
Randomized Design ◽  
Fermentation Profile

The objective of this research was to evaluated the inclusion of buriti fruit peel as additive on the fermentation profile, losses, chemical composition and degradability of elephant grass silage. We used a completely randomized design with five levels of buriti fruit peel (0, 50, 100, 200 and 400 g kg-1). The silos were opened after 28 days of storage. In situ degradability monitoring was conducted using a split-plot design in which four animals represented the blocks and silage supplemented with five levels of buriti fruit peel represented the treatments. The use of the additive in elephant silage increased dry matter (DM) (P < 0.001), ether extract (EE) (P < 0.001), ash (P < 0.001), neutral detergent fiber (NDF) (P < 0.001) and acid detergent fiber (ADF) (P= 0.0000). The pH (P= 0.0000), N-NH3 (P = 0.024) and there was a decrease in gas losses (P < 0.001), effluent losses and dry matter recovery (P = 0.218) not were influenced by the addition of buriti fruit peel. The inclusion of buriti fruit peel linearly reduced the ruminal degradability DM of soluble fraction (a) (P < 0.001) and potentially degradable insoluble fraction (b) (P < 0.001). The DM content increase with the addition of the buriti fruit peel to the elephant grass silage promotes improvements in the fermentation process, reduces losses of nutrients and ruminal disappearance of dry matter and does not significantly change the chemical composition with the inclusion of 166.7 g kg-1 of the buriti fruit peel.

scholarly journals In vitro degradability of coffee husks treated with doses of fibrolytic enzymes for use in ruminant nutrition

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2691
Author(s):  
Yasmin Haluan Porto Moura ◽  
Carmen Lucia De Souza Rech ◽  
Mauro Pereira de Figueiredo ◽  
José Luiz Rech ◽  
Yann Dos Santos Luz ◽  
...  
Keyword(s):  
Dry Matter ◽  
Animal Feed ◽  
Neutral Detergent Fiber ◽  
Agricultural Activity ◽  
State University ◽  
Fibrolytic Enzymes ◽  
Coffee Husk ◽  
Randomized Design ◽  
Ruminal Degradability

The agricultural activity has generated a progressive amount of waste, which needs a proper treatment to avoid negative environmental impacts. At the same time, values can be added to such waste, as its use in animal feed. This research was conducted at the laboratory of Animal Nutrition, State University of Southwestern Bahia, campuses of Vitória da Conquista and Itapetinga. The objective of this study was to evaluate the effect of coffee husks on ruminant feeds by increasing doses of fibrolytic enzymes, evaluating their effects on in vitro ruminal degradability of dry matter (DM), neutral detergent fiber (NDF), and acid detergent fiber (FDA) of the coffee husk (CH). The experiment was a completely randomized design in a 2x4 factorial scheme. It compounded the following treatments: Coffee husk (CH1): 1.5% enzymes (E) and 24 h enzymatic action (EA); CH2: 3.0% (E) and 24h (EA); CH3: 4.5% (E) and 24 h (EA); CH4: 6% (E) and 24 h (EA); CH5: 1.5% (E) 48 h (EA); CH6: 3% (E) and 48h (EA); CH7: 4.5% (E) and 48h (EA); and CH8: 6% (E) and 48 h (EA), all based on dry matter. An improvement in the degradability of the nutritional parameters MS, NDF, and FDA occurred with the addition of enzymes, with 3% enzyme addition being the best level, and 24 hours, as the best action time. In addition to that, as the EA on coffee husk increased, the degradation rate decreased. Therefore, the use of enzymes can improve the digestibility of the fibrous fraction, enabling the use of the coffee husk and possibly other agroindustrial residues, thus minimizing their adverse effects on nature.

scholarly journals PENINGKATAN PRODUKTIVITAS PAKAN DAN NUTRISI SAPI PADA AREAL KELAPA MELALUI INTRODUKSI PENNISETUM PURPUREUM SCHUM CV. MOTT

Buletin Palma ◽  
2017 ◽  
Vol 17 (1) ◽  
pp. 71
Author(s):  
Paulus C. Paat ◽  
Jantje G. Kindangen
Keyword(s):  
Animal Feed ◽  
Dry Weight ◽  
Pennisetum Purpureum ◽  
Elephant Grass ◽  
Forage Crops ◽  
North Sulawesi ◽  
Feed Production ◽  
Randomized Design ◽  
Pennisetum Purpureum Schum ◽  
Dwarf Elephant Grass

<p>Coconut plantation area in North Sulawesi is an ecological basis for cattle but lower in terms of productivity of feed d annutrients. This study aims to improve the productivity of feed and nutrient  for beef cattle development in the coconut palm plantation through the introduction of superior forage P. purpureum Schum cv. Mott. The study was conducted from July 2012 to January 2013, in the Ongkaw Village, South Minahasa Regency, North Sulawesi. Coconut palms used in this study was 50 years-old tall coconuts with planting system of  9 m x 9 m at farmer plantation area. The research followed a completely randomized design with three treatments and three replications. The treatments tested were types of animal feed, which consists of (1). P. purpureum  Schum cv. Mott  (dwarf elephant grass),  Cynodon sp. (native grass), and P. purpureum (forage elephant grass). Planting systems of livestock forage are 20 cm x 20 cm, for Cynodon sp.  100 cm x 50 cm for  both  P. purpureum  Schum cv. Mott and P. purpureum. The first defoliation was done 70 days after planting, after that, the defoliation was done every 45 days. The result showed that the dry weight of animal feed/ha was 15.31 tons, 163.73   tons and 128.21 tons for Cynodon sp., P. purpureum  Schum cv. Mott and P. purpureum, respectively. Dry matter and nutrients of P. purpureum  Schum cv. Mott was higher than that of Cynodon sp. and P. purpureum. The result showed that the introduced P. purpureum  Schum cv. Mott significantly increased both animal feed production and feed nutrients in coconut plantation area as compared to the local forage crops (Cynodon sp. and P. purpureum). The P. purpureum  Schum cv. Mott can adapt to the shade of bearing coconut palms.</p><p>ABSTRAK </p><p>Lahan perkebunan kelapa di Sulawesi Utara merupakan basis ekologi sapi namun produktivitas dan nutrisi pakan rendah. Penelitian ini bertujuan meningkatkan produktivitas pakan dan nutrisi untuk pengembangan sapi potong di lahan perkebunan kelapa, melalui   introduksi hijauan pakan ternak unggul Pennisetum purpureum Schum cv. Mott. Penelitian dilaksanakan pada Juli 2012 sampai dengan Januari 2013 di Desa Ongkaw, Kabupaten Minahasa Selatan, Provinsi Sulawesi Utara. Tanaman kelapa yang digunakan dalam penelitian ini adalah Kelapa Dalam umur 50 tahun dengan jarak tanam  9 m x 9 m. Penelitian  menggunakan  Rancangan  Acak  Lengkap  dengan tiga perlakuan dan           tiga ulangan. Tiga perlakuan yang diuji adalah jenis pakan ternak, yang terdiri atas P. purpureum Schum cv. Mott, Cynodon sp. dan Pennisetum purpureum. Jarak tanam pakan ternak tersebut adalah 20 cm x 20 cm untuk Cynodon sp., dan 100 cm x 50 cm untuk P. purpureum Schum cv. Mott dan P. purpureum. Defoliasi pertama dilakukan 70 hst, setelah itu defoliasi dilakukan setiap 45 hari. Hasil penelitian ini menunjukkan bahwa berat kering pakan ternak per ha adalah 15,31 ton; 128,21 ton; dan 163,73 ton/ha berturut-turut untuk  Cynodon sp., P. purpureum, dan P. purpureum Schum cv. Mott. Bahan kering dan nutrisi pakan P. purpureum Schum cv. Mott  lebih tinggi dari Rumput Cynodon sp. dan Pennisetum purpureum. Hasil penelitian menunjukkan bahwa P. purpureum Schum cv. Mott  yang diindtroduksi meningkatkan produksi dan nutrisi pakan ternak pada lahan perkebunan kelapa secara nyata dibanding tanaman pakan lokal Cynodon sp. dan P. purpureum. Pennisetum  purpureum Schum cv. Mott  dapat beradaptasi di bawah naungan kelapa dewasa.<br /><br /></p><p> </p><p> </p>

scholarly journals Fermentative characteristics and nutritional value of elephant grass silage added with dehydrated banana peel

2017 ◽  
Vol 39 (2) ◽  
pp. 123 ◽  
Author(s):  
Lara Maria Santos Brant ◽  
Paulo Roberto Silveira Pimentel ◽  
João Paulo Sampaio Rigueira ◽  
Dorismar David Alves ◽  
Mateus Alves Macedo Carvalho ◽  
...  
Keyword(s):  
Dry Matter ◽  
Nutritional Value ◽  
Protein Quality ◽  
Neutral Detergent Fiber ◽  
Banana Peel ◽  
Elephant Grass ◽  
Grass Silage ◽  
Dry Matter Digestibility ◽  
Randomized Design ◽  
Inclusion Level

The aim of this study was to evaluate the fermentative losses and nutritional value of elephant grass silages with the increasing of inclusion levels of dehydrated banana peel. The experiment was conducted in a completely randomized design, with six treatments and four replications, being the silage exclusively from elephant grass, and five levels of inclusion of banana peel to the elephant grass silage, as the following - 5; 10; 15; 20 and 25%, being added based on natural matter. The addition of the banana peel in the silage reduced linearly (p < 0.05) the pH, the ammoniacal nitrogen and the losses of the fermentative process. In addition, the inclusion of banana peel increased linearly (p < 0.05) the dry matter and non-fibrous carbohydrates. On the other hand, the neutral detergent fiber and the acid detergent fiber were linearly reduced with the inclusion of the banana peel (p < 0.05), but there was no change in the dry matter digestibility in situ. The inclusion of dehydrated banana peel in elephant grass silage reduces the losses of the fermentation process with more consistent results at the 25% inclusion level, however, it reduces the silage nutritional value due to fibrous and protein quality. 

Biomass and nutritive value of forage soybean lines [Glycine max L. (Merr.)] in northwestern Puerto Rico.

1969 ◽  
Vol 99 (1) ◽  
pp. 19-36
Author(s):  
Alfredo Aponte ◽  
Elide Valencia-Chin ◽  
James Beaver
Keyword(s):  
Glycine Max ◽  
Chemical Composition ◽  
Nutritive Value ◽  
Neutral Detergent Fiber ◽  
Soybean Line ◽  
Planting Dates ◽  
Temperature And Precipitation ◽  
Two Factors ◽  
Principal Factors ◽  
Glycine Max L

Ten lines of forage soybean [Glycine max L. (Merr.)] were evaluated using two planting dates (PD) in September and January; and two crop harvest physiological stages (CHPS), R2 (full bloom) and R5.4 (most pods 51 to 75% full), a total area of 496 m2 with an Oxisol soil, under conditions of temperature and precipitation not limiting crop growth. The experimental design was one of split plots in randomized complete blocks, PD constituting the complete plots, CHPS the subplots, and soybean lines the sub-subplots. Dry matter yields (DMY) were higher (P menor que 0.01) for R5.4 than R2 (6,452 vs. 5,436 kg/ha), fluctuated (P menor que 0.058) from 5,300 to 6,573 kg/ha among the soybean lines and did not differ between the two PD. Plant populations were about 260,000 kg/ha and were not affected by the three principal factors. Plant height varied (P menor que 0.01) from 84.2 to 93.2 cm among the soybean lines; differed (P menor que 0.05) between the two PD (89.2 cm, September vs. 87.5 cm, January) and (P menor que 0.01) between the two CHPS (72.4 cm, R2 vs. 104.3 cm, R5.4); and was also affected by all of the double and the triple interactions of the three factors. The proportion of leaf in the total DM favored (P menor que 0.01) R2 over R5.4 (44.1 vs. 41.1%) and involved an interaction (P menor que 0.05) of CHPS x soybean line. Regarding the chemical composition of the forage, crude protein (CP) varied among the soybean lines (P menor que 0.05) and between the CHPS (P menor que 0.01) and was affected (P menor que 0.01) by an interaction of these two factors (29.6 to 33.6, R2 and 23.1 to 26.7, R5.4). Acid detergent fiber (ADF) behaved like a CP with respect to significance of the independent variables (21.0 to 25.6, R2 and 26.2 to 33.3, R5.4); whereas neutral detergent fiber (NDF) did not differ among soybean lines, but was higher (P menor que 0.01) for R5.4 than for R2 (41.0 vs. 33.5), and involved an interaction (P menor que 0.01) of CHPS x soybean line. It is concluded that, according to both agronomic characteristics and chemical composition, all the soybean lines evaluated performed adequately, but SF-6, SF-24, SF-50, SF-88 and SF-110 outperformed SF-1, SF-2, SF-22, SF-57 and SF-72; harvest at the R5.4 stage was advantageous in achieving greater DMY without unduly sacrificing the excellent chemical composition of R2 forage; and the magnitude of PD effects was not large.

scholarly journals Chemical composition and fermentation characteristics of elephant grass silage with biodiesel industry co-products

2012 ◽  
Vol 42 (4) ◽  
pp. 718-723
Author(s):  
Eric Haydt Castello Branco van Cleef ◽  
José Cleto da Silva Filho ◽  
Arnaldo Prata Neiva Júnior ◽  
René Maurício Patiño Pardo ◽  
Aníbal Coutinho do Rêgo ◽  
...  
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Neutral Detergent Fiber ◽  
Elephant Grass ◽  
Physic Nut ◽  
Dry Matter Digestibility ◽  
Randomized Design ◽  
Animal Feeding ◽  
Nitrogen Contents

The objective of this research was to evaluate the effect of three concentrations (3, 6, and 9%) of forage turnip (Raphanus sativus) and physic nut (Jatropha curcas) cakes on dry matter, crude protein, ether extract, neutral detergent fiber, acid detergent fiber, lignin, acid detergent insoluble nitrogen neutral detergent insoluble nitrogen contents, in vitro dry matter digestibility, pH values and concentrations of N-NH3 in elephant grass silages. It was used an entirely randomized design in factorial arrangement [(2×3)+1]. Experimental PVC silos were used and ensiled material was kept for 62 days. The addition of cakes increased the dry matter contents (P<0.05). The fibrous fractions were reduced (P<0.05) with the inclusion of cakes during the grass ensilage and the CP contents increased (P<0.05). The forage turnip cake provided the same pH and N-NH3 values in ideal levels and the physic nut, added to 9%, increased those values (P<0.05). IVDMD was reduced (P<0.05) when the cakes were added. These co-products can be used in small amounts for elephant grass ensilage in order to provide improvement in chemical and fermentation characteristics of the silages. Nevertheless, physic nut cake shows limitations for its use in animal feeding due to the presence of toxic compounds, making necessary studies for their identification and elimination.

scholarly journals Anaerobic co-digestion of swine manure and forage at two harvesting ages

2022 ◽  
Vol 52 (4) ◽  
Author(s):  
Juliana Dias de Oliveira ◽  
Ana Carolina Amorim Orrico ◽  
Brenda Kelly Viana Leite ◽  
Alice Watte Schwingel ◽  
Marco Antonio Previdelli Orrico Junior ◽  
...  
Keyword(s):  
Biogas Production ◽  
Swine Manure ◽  
Neutral Detergent Fiber ◽  
Advanced Age ◽  
Pennisetum Purpureum ◽  
Vegetable Waste ◽  
Elephant Grass ◽  
Total Solids ◽  
Randomized Design ◽  
Volatile Solids

ABSTRACT: The co-digestion of swine manure with vegetable waste is an alternative that can increase the production of biogas and methane generated by the isolated digestion of manure. However, recommendations that are based on the best ratio between manure and forage, as well as the age of harvest, are still scarce in the literature. This study was conducted to evaluate inclusions (0, 25, 50, 75 and 100%) of the total solids (TS) of Elephant grass (Pennisetum purpureum Schum) harvested at two ages medium age (MA) at 45 days of growth and advanced age (AA) at 90 days in co-digestion with swine manure, using an entirely randomized design in a 5x2 factorial scheme. Batch digesters were used and biogas production was monitored for 12 weeks. There was influence of forage age (P <0.05) on the degradation of solids and neutral detergent fiber, with higher values for the substrates containing MA forage. The highest CH4 yields were obtained by the substrates containing MA forage in the inclusion of 27.7 and 31.6%, being 253.7 and 222.2 L of CH4 per Kg of total or volatile solids. The age of the forages influenced the onset and persistence of biogas production, being advantageous only in the inclusion of 25% of MA forage. The AA forage inclusion is not recommended for co-digestion with swine manure.

scholarly journals SILAGENS DE CAPIM-ELEFANTE E EMBAÚBA ADITIVADA COM PRODUTOS ALTERNATIVOS NA AMAZÔNIA OCIDENTAL

Nativa ◽  
2019 ◽  
Vol 7 (6) ◽  
pp. 820
Author(s):  
Betina Raquel Cunha dos Santos ◽  
Fábio Augusto Gomes ◽  
Lerner Arévalo Pinedo ◽  
Gerbson Francisco Nogueira Maia
Keyword(s):  
Fermentation Process ◽  
Nutritive Value ◽  
Neutral Detergent Fiber ◽  
Pennisetum Purpureum ◽  
Corn Meal ◽  
Elephant Grass ◽  
Grass Silage ◽  
Randomized Design ◽  
Maize Meal ◽  
Different Levels

Objetivou-se avaliar o padrão fermentativo e a bromatologia da silagem de capim- elefante cultivar Napier com as folhas de Embaúba na proporção de 50:50 aditivada com torta de semente de cupuaçu, cana-de-açúcar e fubá de milho em diferentes níveis. O experimento foi realizado em delineamento inteiramente casualizado, com quatro repetições por tratamento. Foram testados os tratamentos (0%), (5%), (10%) e (15%) dos aditivos citados. O material foi ensilado em mini-silos de tubos de PVC por 45 dias para efetivação do processo fermentativo. Foram avaliados pH, matéria seca (MS), proteína bruta (PB), fibra em detergente neutro e ácido (FDN/FDA), hemicelulose (HEM) e nutrientes digestíveis totais (NDT). O pH da torta de semente de cupuaçu e do fubá de milho estão dentro da amplitude preconizada na literatura. Os aditivos proporcionaram maior percentual de MS e PB em todos os tratamentos, testando estes dentro dos limites considerados aceitáveis para um adequado processo fermentativo. FDN e FDA aumentaram linearmente à medida que aumentou a inclusão de torta de cupuaçu e fubá, porém permaneceram abaixo do limite considerado limitante ao consumo voluntário dos ruminantes e a digestibilidade. Os aditivos adicionados na forragem de capim-elefante com folhas de Embaúba melhoraram o valor nutritivo da silagem.Palavras-chave: composição bromatológica, Cecropia paphytachua, ensilagem, Pennisetum purpureum. ELEPHANT GRASS SILAGE AND EMBAÚBA WITH ADDED ALTERNATIVE PRODUCTS IN THE WESTERN AMAZON  ABSTRACT: This study aimed to evaluate the fermentative pattern and the bromatological of the Elephant grass silage cultivar Napier with the Embaúba leaf’s in the proportion of 50:50, added with of cupuassu cake seed, sugarcane and corn meal at different levels. The experiment was carried out in a completely randomized design, with four replications per treatment. The treatments 0%, 5%, 10%) and 15% of the cited additives were tested. The ensiled material was in mini-silos of PVC pipes for 45 days to affect the fermentation process. pH, dry matter (DM), crude protein (CP), neutral detergent fiber and acid (NDF/ FDA), hemicellulose (HEM) and total digestible nutrients (NDT) were evaluated. The pH of the cupuassu and maize meal are within the range recommended in the literature. The additives provided a higher percentage of DM and PB in all treatments, and these were within the limits considered acceptable for an adequate fermentation process. NDF and ADF increased linearly as the inclusion of cupuassu cake and corn meal increased, but remained below the limits considered limiting the voluntary consumption of ruminants and digestibility. The additives added in the elephant grass fodder with Embaúba leaves improved the nutritive value of the silage.Keywords: bromatological composition, Cecropia paphytachua, ensilage, Pennisetum purpureum. 

scholarly journals Chitosan level effects on fermentation profile and chemical composition of sugarcane silage

2020 ◽  
Vol 57 (3) ◽  
pp. e162942
Author(s):  
Tiago Antonio Del Valle ◽  
Giovani Antonio ◽  
Elissandra Maiara de Castro Zilio ◽  
Mauro Sérgio da Silva Dias ◽  
Jefferson Rodrigues Gandra ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Chemical Composition ◽  
Polynomial Regression ◽  
Ethanol Concentration ◽  
N Concentration ◽  
Randomized Design ◽  
Fermentation Profile ◽  
In Situ Degradation ◽  
Mold And Yeast

This study aimed to evaluate the effects of increasing levels of chitosan (CHI) on sugarcane fermentation profile and losses, chemical composition, and in situ degradation. Treatments were: 0, 1, 2, 4, and 8 g of CHI/kg of dry matter (DM). Twenty experimental silos (PVC tubing with diameter 28 cm and height 25 cm) were used. Sand (2 kg) was placed at the bottom of each silo to evaluate effluent losses, and silos were weighed 60 d after ensiling to calculate gas losses. Samples were collected from the center of the silo mass to evaluate silage chemical composition, in situ degradation, fermentation profile, and mold and yeast count. Data were analyzed as a completely randomized design, and the treatment effect was decomposed using polynomial regression. Chitosan linearly increased acetic acid and NH3-N concentration, while yeast and mold count, and ethanol concentration decreased. Intermediary levels of CHI (from 4.47 to 6.34 g/kg DM) showed the lower values of effluent, gas, and total losses. There was a quadratic effect of CHI on the content of non-fiber carbohydrates, neutral and acid detergent, and in situ DM degradation. The lowest fiber content was observed with levels between 7.01 and 7.47 g/kg DM, whereas the highest non-fiber carbohydrate content and in situ DM degradation were found with 6.30 and 7.17 g/kg DM of CHI, respectively. Chitosan linearly increased acetic acid and NH3-N concentration, whereas it linearly reduced ethanol concentration and count of yeast and mold. Thus, intermediary levels of CHI, between 4.47 and 7.47 g/kg of DM, decrease fermentation losses and improve the nutritional value of sugarcane silage.

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