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Papers by daniella cyrine tolentino

Agrarian, 2015

Foram avaliados vinte genótipos de Sorghum bicolor cv. Bicolor x Sorghum bicolor cv. Sudanense qu... more Foram avaliados vinte genótipos de Sorghum bicolor cv. Bicolor x Sorghum bicolor cv. Sudanense quanto ao valor nutritivo: teor de matéria seca, celulose, hemicelulose, lignina, nitrogênio insolúvel em detergente neutro e nitrogênio insolúvel em detergente ácido das folhas, colmos e planta completa. O delineamento experimental foi o de blocos casualizados e a comparação de médias foi efetuada pelo teste de Scott-knott, a 5% de probabilidade. Não foi observada diferença (p>0,05) entre os genótipos em relação aos teores de matéria seca, celulose, hemicelulose, NIDN e NIDA das folhas e dos colmos. Não houve diferença (p>0,05) entre os genótipos quanto aos teores de lignina da folha, no entanto, em relação aos teores de lignina do colmo houve diferença (p

Acta Scientiarum. Animal Sciences, 2018

Acta Scientiarum. Animal Sciences, 2017

This study aimed to evaluate the nutritional characteristics and quality of silages of five sorgh... more This study aimed to evaluate the nutritional characteristics and quality of silages of five sorghum genotypes, namely: Volumax, AG2005E, Qualimax, BRS610 and AG2501. The study was conducted at the Experimental Farm Unimontes, in the municipality of Janauba, state of Minas Gerais. The treatments were distributed in a randomized block design with four replicates. Data were tested by analysis of variance andmeans were compared by Scott-Knott test at a significance level of 5%. The pH values ranged from 3.93 and 4.10. Genotypes differed in all studied nutritional characteristics (p < 0.05). For the acid detergent fiber, differences were detected between the genotypes, AG2501 (35.66%), Volumax (34.89%), AG2005E (34.53%), Qualimax (32.39%) and BRS610 (33.60%). The high participation of lignin was verifiedin all genotypes except for Volumax (4.14%). All silages were within the recommended range 50-65% for in vitro dry matter digestibility and classified as having good quality, however o...

This study aimed to evaluate the nutritional value of the leaves and stalks of sorghum genotypes ... more This study aimed to evaluate the nutritional value of the leaves and stalks of sorghum genotypes of mutant and normal BMR used for cutting and grazing. Twenty sorghum genotypes were used, there being eleven mutants BMR and nine normal. The design was a randomized block with 3 replications, where each genotype was a treatment (20 treatments) totaling 60 experimental plots. The nutritional value was analyzed after 42 days of regrowth after the first cut, determine the content of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF). Regarding PB of leaves and stems was no difference between genotypes. The average levels ranged from 18.31 to 21.14 % CP leaves for BR 800 and BR001AXTX2784bmr respectively. The mean levels of the stems ranged from 6.98 to 14.33 % CP for CMSXS205AxTX2785bmr and BR007AxTX2785bmr. In DM, NDF and ADF of leaves and stems compared there was no difference between genotypes. The maturity affects the nutritional value of...

Objetivou-se avaliar a eficiencia produtiva e reprodutiva de animais mesticos leiteiros criados n... more Objetivou-se avaliar a eficiencia produtiva e reprodutiva de animais mesticos leiteiros criados no Instituto Federal do Norte de Minas Gerais - Campus Salinas. O arquivo zootecnico continha 199 informacoes, 2004 a 2010. Rebanho composto variando de 1/2 HO ate os puros por cruza 31/32 HO, sendo animais 1/2, 3/4 e 7/8 HO/GL. Os animais foram divididos em dois grupos de acordo com a composicao genetica, grupo 1 com 1/2 e 9/16 e grupo 2 superior 70% de genes da raca Holandesa. Foram avaliadas a producao total de leite, duracao da lactacao e ordem de lactacao para as caracteristicas produtivas. Ja as caracteristicas reprodutivas foram o intervalo de partos, idade ao primeiro parto, duracao da gestacao e intervalo do primeiro para o segundo o parto. Os animais com menores porcentagens de genes da raca Holandesa tiveram lactacoes mais curtas, mas os animais mais taurinos apresentaram producao total de leite superior. Os animais com maior percentual de genes da raca Holandesa tiveram idade ...

Acta Scientiarum. Animal Sciences, 2017

This study aimed to evaluate the agronomic performance of 24 sorghum genotypes in four Brazilian ... more This study aimed to evaluate the agronomic performance of 24 sorghum genotypes in four Brazilian regions and the chemical characteristics of genotypes grown in Sete Lagoas, state of Minas Gerais. Genotypes BRS655 and 12F37005 had higher average production of green matter (> 44 ton ha-1) and dry matter (> 17 ton ha-1), respectively. Genotypes 12F38019, 12F40019, 12F37005, 12F37043 and Volumax took more days to flower in three of the four municipalities (75-90 days). Genotypes 12F38006, 12F40006 and 12F37016 were taller (> 2 m). Values of dry matter, crude protein and neutral detergent fiber ranged from 37.15 to 50.13; 5.51 to 10.28 and 43.57 to 65.69%, respectively. The genotypes were not different regarding acid detergent fiber content, with mean value of 34.83%. Genotypes 12F38019, 12F37016, 12F39005, 12F39019, 12F37007, 12F37014, 12F39014 and BRS 655 showed the best values of dry matter digestibility (64.31 to 74.20%) and crude protein content (8.33 to 10.28%). Among them...

REALIZAÇÃO, 2019

Objetivou-se por meio de atividades extensionistas orientar e incentivar produtores da agricultur... more Objetivou-se por meio de atividades extensionistas orientar e incentivar produtores da agricultura familiar do município de Espinosa quanto ao uso de tecnologias de forma estratégica visando aumentar a produção de leite e/ou carne ao longo do ano. O desenvolvimento das ações para os produtores familiares da região de Espinosa-MG foi realizado a partir de Julho de 2017. A princípio, foram realizadas reuniões com a Secretaria de Agricultura do município e com as famílias produtoras, com a finalidade de interagir e explicar o papel da Unimontes no local, bem como a troca de saberes e conhecimento histórico, área local e a comunidade como um todo. Houve participação de 40 produtores rurais de várias comunidades no primeiro encontro de extensão relacionado à produção e manejo de palma forrageira. Houve participação de 60 produtores de várias comunidades na reunião referente às estratégias de suplementação. Detecta-se a importância da continuidade das palestras e orientações técnicas aos ...

Semina: Ciências Agrárias, 2019

The objective was to evaluate the rumen degradability of dry matter, crude protein and fiber frac... more The objective was to evaluate the rumen degradability of dry matter, crude protein and fiber fraction of some oilseed byproducts. Oilseed byproducts evaluated were: Sunflower Meal, Cotton Cake and Castor Bean Cake. The rumen degradability test was performed following a split plot randomized complete block design with three treatments (plots) and seven incubation times (subplots) and six blocks (animals). The readily soluble fraction of the dry matter of sunflower meal was 35.0% higher than the same fraction of cotton cake and castor bean cake (mean 24.46%, P < 0.01). The highest potential degradability of crude protein (P < 0.01) was verified in castor bean cake (96.90%, 5% rate of passage). Sunflower meal had the lowest insoluble fraction of the fiber fraction, 34.4%, compared to cotton cake and castor bean cake, with 64.4% and 39.4%, respectively (P < 0.01). Sunflower meal had the highest fiber effective degradability (25.2%). Sunflower meal presented better values of rum...

Acta Scientiarum. Animal Sciences, 2016

The objective was to select sorghum genotypes for silage production using its chemical character... more The objective was to select sorghum genotypes for silage production using its chemical characteristics. The experiment was carried out in the facilities of Embrapa Maize and Sorghum in Sete Lagoas, state of Minas Gerais, to evaluate the agronomic characteristics, and nutritional quality of silage of twelve sorghum genotypes. We used a randomized block design with three replications. In relation to the production of green matter, the genotypes SF15 Volumax and BR610 stood out (52.07; 48.00 and 41.87 ton ha-1). Regarding pH, genotypes 1015339, 1015347, 1016007, SF15, BRS655, Volumax and BR610 averaged 3.68. All genotypes were similar considering the nutritional value, ammonia nitrogen and water activity. The genotypes SF15, Volumax and BRS610 showed the highest productivity per area, representing the best options for silage production.

Acta Scientiarum. Animal Sciences, 2016

This study aimed to evaluate in situ degradability and degradation kinetics of DM, NDF and ADF of... more This study aimed to evaluate in situ degradability and degradation kinetics of DM, NDF and ADF of silage, with or without tannin in the grains. Two isogenic lines of grain sorghum (CMS-XS 114 with tannin and CMS-XS 165 without tannin) and two sorghum hybrids (BR-700 dual purpose with tannin and BR-601 forage without tannin) were ensiled; dried and ground silage samples were placed in nylon bags and introduced through the fistulas. After incubation for 6, 12, 24, 48, 72 and 96 hours, bags were taken for subsequent analysis of fibrous fractions. The experimental design was completely randomized with 4 replicates and 4 treatments and means compared by Tukey’s test at 5% probability. As for the DM degradation rate, silage of CMSXS165without tannin was superior. Silages of genotypes BR700 and CMSXS 114 with tannin showed the highest values of indigestible ADF (59.54 and 43.09%). Regarding the NDF, the potential degradation of silage of CMSXS165 line without tannin was superior. Tannin ca...

Acta Scientiarum. Animal Sciences, 2016

The objective was to select from among 24 sorghum genotypes the superior ones for silage producti... more The objective was to select from among 24 sorghum genotypes the superior ones for silage production. The study was conducted in the experimental field of Embrapa Maize & Sorghum, in the municipality of Sete Lagoas, Minas Gerais State. It used 24 forage sorghum genotypes, 21 being hybrids from the crossing of grain sorghum females and forage males (12F38019, 12F38006, 12F40006, 12F40005, 12F40019, 12F37016, 12F37005, 12F37043, 12F39006, 12F39005, 12F39019, 12F38005, 12F38007, 12F37007, 12F39007, 12F40007, 12F38014, 12F37014, 12F39014, 12F40014 e 12F38009) and three witnesses: BRS 610, BRS 655 and Volumax. It estimated productivity per area, in vitro dry matter digestibility, and assessed the bromatological and fermentation characteristics of sorghum silage. In vitro dry matter digestibility, unavailable protein in neutral detergent, neutral detergent fiber corrected for ashes and protein, acid detergent fiber, hemicellulose and lignin differed as to the genotypes tested. The pH and t...

Bioscience Journal, 2016

The selection of cassava varieties for cultivation in semiarid regions constitutes an alternative... more The selection of cassava varieties for cultivation in semiarid regions constitutes an alternative to generate income and for animal feed. The objective of this study was to evaluate the potential for biomass and protein production of seven cassava varieties in semiarid area from Bahia. Eleven agronomic shoot (SH) and root (ROT) traits, as well as crude protein (CP), were evaluated using a randomized block design with four replications in Senhor do Bonfim (BA). Principal component analysis (PCA) and correlations analysis were carried out among the traits. Significant differences were found among varieties for all traits except for dry matter content of the shoots. Important variations were identified for crude protein content (17.9 to 25.13%), root yield (8.17 to 19.79 t.ha-1), yield of the upper third of the aerial part (from 9.36 to 15.89 t.ha-1) and dry matter yield of the shoot (1.99 to 3.14 t.ha-1), crude protein content in the shoot (0.37 to 0.64 t.ha-1) and roots (from 0.12 to 0.37 t.ha-1). According to the PCA the first two components accounted for over 77% of the variation, and traits related to yield were the main sources of diversity among the cassava varieties. Most of the correlations were positive and favorable for the selection of the most suitable varieties for production in semiarid regions. Although, grouping the cassava varieties based on PCA was not possible, varieties 'BRS Verdinha' showed good potential for protein production and variety 'Izabel de Souza' as a producer of biomass (shoot and roots).

Revista Brasileira de Milho e Sorgo, 2013

RESUMO-O experimento foi realizado na Fazenda Experimental da Unimontes em Janaúba, Norte de Mina... more RESUMO-O experimento foi realizado na Fazenda Experimental da Unimontes em Janaúba, Norte de Minas Gerais, com o objetivo de determinar as características das silagens de cinco genótipos de sorgo cultivados no inverno. Foram utilizados os materiais Volumax, AG 2005E, Qualimax, BRS 610 e AG 2501. O plantio foi realizado em blocos casualizados com quatro repetições por genótipo. Os dados foram submetidos às análises de variância por meio do programa Sisvar e as comparações de médias foram feitas de acordo com o teste de Scott-Knott ao nível de significância de 5%. Após o corte, parte do material foi ensilada. Após a abertura dos silos, as amostras foram pré-secas, moídas e acondicionadas em frascos de vidro para análises de pH, NH 3 /NT, ácido láctico, ácido acético e digestibilidade in vitro da matéria seca. Os valores de pH, NH 3 /NT, ácido láctico e ácido acético das silagens foram satisfatórios para um bom perfil de fermentação. As maiores porcentagens de DIVMS das silagens foram encontradas nos genótipos Qualimax, BRS 610 e AG 2005E, que não diferiram entre si e foram superiores aos demais. Os genótipos estudados apresentaram produção de massa verde, características agronômicas e valores nutricionais adequados à produção de silagens, com bom padrão fermentativo quando cultivados no inverno. Palavras-chave: avaliação agronômica; produção de forragem; plantio invernal.

Revista Brasileira de Saúde e Produção Animal, 2012

Objetivou-se com o trabalho avaliar o desempenho ponderal de dois genótipos de ovinos, Santa Inês... more Objetivou-se com o trabalho avaliar o desempenho ponderal de dois genótipos de ovinos, Santa Inês e F1 Dorper x Santa Inês em pastagem de Panicum maximum cv. Massai. Foram utilizados oito fêmeas e oito machos, de cada genótipo, em delineamento inteiramente casualizado, em esquema fatorial 2x2x2 (dois genótipos, dois sexos e duas idades de abate). Os dados foram submetidos à análise de variância com aplicação do teste de Scot-Knott com probabilidade de 5%. Avaliaram-se peso ao nascimento, peso a desmama, peso final, ganho de peso médio diário e ganho de peso total. Houve efeito significativo do genótipo para peso ao nascimento e peso a desmama com os cordeiros Dorper x Santa Inês superiores. Para peso final não houve diferença significativa, pois o ganho de peso do desmame ao abate foi superior para o genótipo Santa Inês. Para ganho de peso total o efeito do genótipo foi importante visto que o F1 Dorper x Santa Inês foi superior ao Santa Inês, enquanto o ganho de peso médio final foi...

Agrarian, 2015

Foram avaliados vinte genótipos de Sorghum bicolor cv. Bicolor x Sorghum bicolor cv. Sudanense qu... more Foram avaliados vinte genótipos de Sorghum bicolor cv. Bicolor x Sorghum bicolor cv. Sudanense quanto ao valor nutritivo: teor de matéria seca, celulose, hemicelulose, lignina, nitrogênio insolúvel em detergente neutro e nitrogênio insolúvel em detergente ácido das folhas, colmos e planta completa. O delineamento experimental foi o de blocos casualizados e a comparação de médias foi efetuada pelo teste de Scott-knott, a 5% de probabilidade. Não foi observada diferença (p>0,05) entre os genótipos em relação aos teores de matéria seca, celulose, hemicelulose, NIDN e NIDA das folhas e dos colmos. Não houve diferença (p>0,05) entre os genótipos quanto aos teores de lignina da folha, no entanto, em relação aos teores de lignina do colmo houve diferença (p

Acta Scientiarum. Animal Sciences, 2018

Acta Scientiarum. Animal Sciences, 2017

This study aimed to evaluate the nutritional characteristics and quality of silages of five sorgh... more This study aimed to evaluate the nutritional characteristics and quality of silages of five sorghum genotypes, namely: Volumax, AG2005E, Qualimax, BRS610 and AG2501. The study was conducted at the Experimental Farm Unimontes, in the municipality of Janauba, state of Minas Gerais. The treatments were distributed in a randomized block design with four replicates. Data were tested by analysis of variance andmeans were compared by Scott-Knott test at a significance level of 5%. The pH values ranged from 3.93 and 4.10. Genotypes differed in all studied nutritional characteristics (p < 0.05). For the acid detergent fiber, differences were detected between the genotypes, AG2501 (35.66%), Volumax (34.89%), AG2005E (34.53%), Qualimax (32.39%) and BRS610 (33.60%). The high participation of lignin was verifiedin all genotypes except for Volumax (4.14%). All silages were within the recommended range 50-65% for in vitro dry matter digestibility and classified as having good quality, however o...

This study aimed to evaluate the nutritional value of the leaves and stalks of sorghum genotypes ... more This study aimed to evaluate the nutritional value of the leaves and stalks of sorghum genotypes of mutant and normal BMR used for cutting and grazing. Twenty sorghum genotypes were used, there being eleven mutants BMR and nine normal. The design was a randomized block with 3 replications, where each genotype was a treatment (20 treatments) totaling 60 experimental plots. The nutritional value was analyzed after 42 days of regrowth after the first cut, determine the content of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF). Regarding PB of leaves and stems was no difference between genotypes. The average levels ranged from 18.31 to 21.14 % CP leaves for BR 800 and BR001AXTX2784bmr respectively. The mean levels of the stems ranged from 6.98 to 14.33 % CP for CMSXS205AxTX2785bmr and BR007AxTX2785bmr. In DM, NDF and ADF of leaves and stems compared there was no difference between genotypes. The maturity affects the nutritional value of...

Objetivou-se avaliar a eficiencia produtiva e reprodutiva de animais mesticos leiteiros criados n... more Objetivou-se avaliar a eficiencia produtiva e reprodutiva de animais mesticos leiteiros criados no Instituto Federal do Norte de Minas Gerais - Campus Salinas. O arquivo zootecnico continha 199 informacoes, 2004 a 2010. Rebanho composto variando de 1/2 HO ate os puros por cruza 31/32 HO, sendo animais 1/2, 3/4 e 7/8 HO/GL. Os animais foram divididos em dois grupos de acordo com a composicao genetica, grupo 1 com 1/2 e 9/16 e grupo 2 superior 70% de genes da raca Holandesa. Foram avaliadas a producao total de leite, duracao da lactacao e ordem de lactacao para as caracteristicas produtivas. Ja as caracteristicas reprodutivas foram o intervalo de partos, idade ao primeiro parto, duracao da gestacao e intervalo do primeiro para o segundo o parto. Os animais com menores porcentagens de genes da raca Holandesa tiveram lactacoes mais curtas, mas os animais mais taurinos apresentaram producao total de leite superior. Os animais com maior percentual de genes da raca Holandesa tiveram idade ...

Acta Scientiarum. Animal Sciences, 2017

This study aimed to evaluate the agronomic performance of 24 sorghum genotypes in four Brazilian ... more This study aimed to evaluate the agronomic performance of 24 sorghum genotypes in four Brazilian regions and the chemical characteristics of genotypes grown in Sete Lagoas, state of Minas Gerais. Genotypes BRS655 and 12F37005 had higher average production of green matter (> 44 ton ha-1) and dry matter (> 17 ton ha-1), respectively. Genotypes 12F38019, 12F40019, 12F37005, 12F37043 and Volumax took more days to flower in three of the four municipalities (75-90 days). Genotypes 12F38006, 12F40006 and 12F37016 were taller (> 2 m). Values of dry matter, crude protein and neutral detergent fiber ranged from 37.15 to 50.13; 5.51 to 10.28 and 43.57 to 65.69%, respectively. The genotypes were not different regarding acid detergent fiber content, with mean value of 34.83%. Genotypes 12F38019, 12F37016, 12F39005, 12F39019, 12F37007, 12F37014, 12F39014 and BRS 655 showed the best values of dry matter digestibility (64.31 to 74.20%) and crude protein content (8.33 to 10.28%). Among them...

REALIZAÇÃO, 2019

Objetivou-se por meio de atividades extensionistas orientar e incentivar produtores da agricultur... more Objetivou-se por meio de atividades extensionistas orientar e incentivar produtores da agricultura familiar do município de Espinosa quanto ao uso de tecnologias de forma estratégica visando aumentar a produção de leite e/ou carne ao longo do ano. O desenvolvimento das ações para os produtores familiares da região de Espinosa-MG foi realizado a partir de Julho de 2017. A princípio, foram realizadas reuniões com a Secretaria de Agricultura do município e com as famílias produtoras, com a finalidade de interagir e explicar o papel da Unimontes no local, bem como a troca de saberes e conhecimento histórico, área local e a comunidade como um todo. Houve participação de 40 produtores rurais de várias comunidades no primeiro encontro de extensão relacionado à produção e manejo de palma forrageira. Houve participação de 60 produtores de várias comunidades na reunião referente às estratégias de suplementação. Detecta-se a importância da continuidade das palestras e orientações técnicas aos ...

Semina: Ciências Agrárias, 2019

The objective was to evaluate the rumen degradability of dry matter, crude protein and fiber frac... more The objective was to evaluate the rumen degradability of dry matter, crude protein and fiber fraction of some oilseed byproducts. Oilseed byproducts evaluated were: Sunflower Meal, Cotton Cake and Castor Bean Cake. The rumen degradability test was performed following a split plot randomized complete block design with three treatments (plots) and seven incubation times (subplots) and six blocks (animals). The readily soluble fraction of the dry matter of sunflower meal was 35.0% higher than the same fraction of cotton cake and castor bean cake (mean 24.46%, P < 0.01). The highest potential degradability of crude protein (P < 0.01) was verified in castor bean cake (96.90%, 5% rate of passage). Sunflower meal had the lowest insoluble fraction of the fiber fraction, 34.4%, compared to cotton cake and castor bean cake, with 64.4% and 39.4%, respectively (P < 0.01). Sunflower meal had the highest fiber effective degradability (25.2%). Sunflower meal presented better values of rum...

Acta Scientiarum. Animal Sciences, 2016

The objective was to select sorghum genotypes for silage production using its chemical character... more The objective was to select sorghum genotypes for silage production using its chemical characteristics. The experiment was carried out in the facilities of Embrapa Maize and Sorghum in Sete Lagoas, state of Minas Gerais, to evaluate the agronomic characteristics, and nutritional quality of silage of twelve sorghum genotypes. We used a randomized block design with three replications. In relation to the production of green matter, the genotypes SF15 Volumax and BR610 stood out (52.07; 48.00 and 41.87 ton ha-1). Regarding pH, genotypes 1015339, 1015347, 1016007, SF15, BRS655, Volumax and BR610 averaged 3.68. All genotypes were similar considering the nutritional value, ammonia nitrogen and water activity. The genotypes SF15, Volumax and BRS610 showed the highest productivity per area, representing the best options for silage production.

Acta Scientiarum. Animal Sciences, 2016

This study aimed to evaluate in situ degradability and degradation kinetics of DM, NDF and ADF of... more This study aimed to evaluate in situ degradability and degradation kinetics of DM, NDF and ADF of silage, with or without tannin in the grains. Two isogenic lines of grain sorghum (CMS-XS 114 with tannin and CMS-XS 165 without tannin) and two sorghum hybrids (BR-700 dual purpose with tannin and BR-601 forage without tannin) were ensiled; dried and ground silage samples were placed in nylon bags and introduced through the fistulas. After incubation for 6, 12, 24, 48, 72 and 96 hours, bags were taken for subsequent analysis of fibrous fractions. The experimental design was completely randomized with 4 replicates and 4 treatments and means compared by Tukey’s test at 5% probability. As for the DM degradation rate, silage of CMSXS165without tannin was superior. Silages of genotypes BR700 and CMSXS 114 with tannin showed the highest values of indigestible ADF (59.54 and 43.09%). Regarding the NDF, the potential degradation of silage of CMSXS165 line without tannin was superior. Tannin ca...

Acta Scientiarum. Animal Sciences, 2016

The objective was to select from among 24 sorghum genotypes the superior ones for silage producti... more The objective was to select from among 24 sorghum genotypes the superior ones for silage production. The study was conducted in the experimental field of Embrapa Maize & Sorghum, in the municipality of Sete Lagoas, Minas Gerais State. It used 24 forage sorghum genotypes, 21 being hybrids from the crossing of grain sorghum females and forage males (12F38019, 12F38006, 12F40006, 12F40005, 12F40019, 12F37016, 12F37005, 12F37043, 12F39006, 12F39005, 12F39019, 12F38005, 12F38007, 12F37007, 12F39007, 12F40007, 12F38014, 12F37014, 12F39014, 12F40014 e 12F38009) and three witnesses: BRS 610, BRS 655 and Volumax. It estimated productivity per area, in vitro dry matter digestibility, and assessed the bromatological and fermentation characteristics of sorghum silage. In vitro dry matter digestibility, unavailable protein in neutral detergent, neutral detergent fiber corrected for ashes and protein, acid detergent fiber, hemicellulose and lignin differed as to the genotypes tested. The pH and t...

Bioscience Journal, 2016

The selection of cassava varieties for cultivation in semiarid regions constitutes an alternative... more The selection of cassava varieties for cultivation in semiarid regions constitutes an alternative to generate income and for animal feed. The objective of this study was to evaluate the potential for biomass and protein production of seven cassava varieties in semiarid area from Bahia. Eleven agronomic shoot (SH) and root (ROT) traits, as well as crude protein (CP), were evaluated using a randomized block design with four replications in Senhor do Bonfim (BA). Principal component analysis (PCA) and correlations analysis were carried out among the traits. Significant differences were found among varieties for all traits except for dry matter content of the shoots. Important variations were identified for crude protein content (17.9 to 25.13%), root yield (8.17 to 19.79 t.ha-1), yield of the upper third of the aerial part (from 9.36 to 15.89 t.ha-1) and dry matter yield of the shoot (1.99 to 3.14 t.ha-1), crude protein content in the shoot (0.37 to 0.64 t.ha-1) and roots (from 0.12 to 0.37 t.ha-1). According to the PCA the first two components accounted for over 77% of the variation, and traits related to yield were the main sources of diversity among the cassava varieties. Most of the correlations were positive and favorable for the selection of the most suitable varieties for production in semiarid regions. Although, grouping the cassava varieties based on PCA was not possible, varieties 'BRS Verdinha' showed good potential for protein production and variety 'Izabel de Souza' as a producer of biomass (shoot and roots).

Revista Brasileira de Milho e Sorgo, 2013

RESUMO-O experimento foi realizado na Fazenda Experimental da Unimontes em Janaúba, Norte de Mina... more RESUMO-O experimento foi realizado na Fazenda Experimental da Unimontes em Janaúba, Norte de Minas Gerais, com o objetivo de determinar as características das silagens de cinco genótipos de sorgo cultivados no inverno. Foram utilizados os materiais Volumax, AG 2005E, Qualimax, BRS 610 e AG 2501. O plantio foi realizado em blocos casualizados com quatro repetições por genótipo. Os dados foram submetidos às análises de variância por meio do programa Sisvar e as comparações de médias foram feitas de acordo com o teste de Scott-Knott ao nível de significância de 5%. Após o corte, parte do material foi ensilada. Após a abertura dos silos, as amostras foram pré-secas, moídas e acondicionadas em frascos de vidro para análises de pH, NH 3 /NT, ácido láctico, ácido acético e digestibilidade in vitro da matéria seca. Os valores de pH, NH 3 /NT, ácido láctico e ácido acético das silagens foram satisfatórios para um bom perfil de fermentação. As maiores porcentagens de DIVMS das silagens foram encontradas nos genótipos Qualimax, BRS 610 e AG 2005E, que não diferiram entre si e foram superiores aos demais. Os genótipos estudados apresentaram produção de massa verde, características agronômicas e valores nutricionais adequados à produção de silagens, com bom padrão fermentativo quando cultivados no inverno. Palavras-chave: avaliação agronômica; produção de forragem; plantio invernal.

Revista Brasileira de Saúde e Produção Animal, 2012

Objetivou-se com o trabalho avaliar o desempenho ponderal de dois genótipos de ovinos, Santa Inês... more Objetivou-se com o trabalho avaliar o desempenho ponderal de dois genótipos de ovinos, Santa Inês e F1 Dorper x Santa Inês em pastagem de Panicum maximum cv. Massai. Foram utilizados oito fêmeas e oito machos, de cada genótipo, em delineamento inteiramente casualizado, em esquema fatorial 2x2x2 (dois genótipos, dois sexos e duas idades de abate). Os dados foram submetidos à análise de variância com aplicação do teste de Scot-Knott com probabilidade de 5%. Avaliaram-se peso ao nascimento, peso a desmama, peso final, ganho de peso médio diário e ganho de peso total. Houve efeito significativo do genótipo para peso ao nascimento e peso a desmama com os cordeiros Dorper x Santa Inês superiores. Para peso final não houve diferença significativa, pois o ganho de peso do desmame ao abate foi superior para o genótipo Santa Inês. Para ganho de peso total o efeito do genótipo foi importante visto que o F1 Dorper x Santa Inês foi superior ao Santa Inês, enquanto o ganho de peso médio final foi...