Tamanho de partícula da forragem em dietas com níveis crescentes de fibra para cabras leiteiras

Detalhes bibliográficos
Autor(a) principal: Felisberto, Nivea Regina de Oliveira
Data de Publicação: 2011
Tipo de documento: Tese
Idioma: por
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: http://locus.ufv.br/handle/123456789/1813
Resumo: The objective of this work was to evaluate the importance of forage particle size in diets for milk goats. Therefore, it was evaluated the ingestion behavior; the fragmentation of the particles offered, consumed, and contained in compartments of the gastrointestinal tract (rumen, omasum and abomasum)and in the feces; the intake, the digestibility, nitrogen alance; rumen mass; average time of indigestible fraction renewal in the rumen; production and lacteal composition and use efficiency of metabolizable energy of lactating goats. The effects of combination of three particle sizes (2, 5 and 15 cm) and four levels of neutral detergent fiber from the forage (NDFf) (34, 41, 49 and 57% NDFf) were evaluated. Forty-eight multiparous goats at an average of 51 kg of body weight and 60 days of lactation were used. It was used a completely randomized experimental design, in a 3 × 4 factorial scheme with four repetitions. The forage source used was Tifton grass hay (Cynodon dactylon), considered of good quality, containing 62% of NDF and 15% CP, offered in a complete mixture with corn meal and soybean meal based concentrate. Forage particle size influenced feed behavior of the animals, presented a linear effect on the time spent with food ingestion. There was an interaction among particle size and forage fiber level, when it was evaluated the time spent on ingestion per unit of consumed fiber. It was verified the effect of particle size on intake of physically effective DM and NDF. Neutral detergent fiber was also influenced by NDFf. There was no influence of forage particle size on percentage of particles bigger than 1.19 mm, neither on the average geometric diameter (AGD) of the particles contained in rumen compartment and feces. There was an interactive effect among particle size and NDFf on percentage of particles bigger than 1.19 mm and AGD of particles. Forage particle size did not affect dry matter and nutrient intake, originally expressed in grams per day. However, it was observed interaction among particle and NDFf level on the concentration of feed consumed fiber. Particle size influenced in a quadratic manner concentration of lignin consumed in the feed. There was an interactive influence among particle size and NDFf level on the concentration of fiber in the rumen. There was no influence of particle size on digestibility coefficients of dry matter and nutrients, on the balance and use of nitrogen in the organism of the animal; on the average time of renewal of dry matter, NDF or lignin; on lacteal production and composition, except for fat content in the milk, which was influenced by the interaction among particle size and NDFf level and on use efficiency of metabolizable energy. Forage particle size should not be considered as an important factor in formulation of diets for milk goats because of the ability they have on fragment particles into homogenous sizes and because of that they do not cause changes on the intake, on use of the nutrients or animal performance.
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spelling Felisberto, Nivea Regina de Oliveirahttp://lattes.cnpq.br/3480639727563630Vieira, Ricardo Augusto Mendonçahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4721711Y8Queiroz, Augusto César dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783006P5Rodrigues, Marcelo Teixeirahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788161Y5Silva, Márcia Maria Cândido dahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4700519H2Rodrigues, Carla Aparecida Florentinohttp://lattes.cnpq.br/92488422755344502015-03-26T12:54:46Z2013-11-252015-03-26T12:54:46Z2011-02-25FELISBERTO, Nivea Regina de Oliveira. Forage particle size at increasing levels of fiber in diets for dairy goats. 2011. 120 f. Tese (Doutorado em Genética e Melhoramento de Animais Domésticos; Nutrição e Alimentação Animal; Pastagens e Forragicul) - Universidade Federal de Viçosa, Viçosa, 2011.http://locus.ufv.br/handle/123456789/1813The objective of this work was to evaluate the importance of forage particle size in diets for milk goats. Therefore, it was evaluated the ingestion behavior; the fragmentation of the particles offered, consumed, and contained in compartments of the gastrointestinal tract (rumen, omasum and abomasum)and in the feces; the intake, the digestibility, nitrogen alance; rumen mass; average time of indigestible fraction renewal in the rumen; production and lacteal composition and use efficiency of metabolizable energy of lactating goats. The effects of combination of three particle sizes (2, 5 and 15 cm) and four levels of neutral detergent fiber from the forage (NDFf) (34, 41, 49 and 57% NDFf) were evaluated. Forty-eight multiparous goats at an average of 51 kg of body weight and 60 days of lactation were used. It was used a completely randomized experimental design, in a 3 × 4 factorial scheme with four repetitions. The forage source used was Tifton grass hay (Cynodon dactylon), considered of good quality, containing 62% of NDF and 15% CP, offered in a complete mixture with corn meal and soybean meal based concentrate. Forage particle size influenced feed behavior of the animals, presented a linear effect on the time spent with food ingestion. There was an interaction among particle size and forage fiber level, when it was evaluated the time spent on ingestion per unit of consumed fiber. It was verified the effect of particle size on intake of physically effective DM and NDF. Neutral detergent fiber was also influenced by NDFf. There was no influence of forage particle size on percentage of particles bigger than 1.19 mm, neither on the average geometric diameter (AGD) of the particles contained in rumen compartment and feces. There was an interactive effect among particle size and NDFf on percentage of particles bigger than 1.19 mm and AGD of particles. Forage particle size did not affect dry matter and nutrient intake, originally expressed in grams per day. However, it was observed interaction among particle and NDFf level on the concentration of feed consumed fiber. Particle size influenced in a quadratic manner concentration of lignin consumed in the feed. There was an interactive influence among particle size and NDFf level on the concentration of fiber in the rumen. There was no influence of particle size on digestibility coefficients of dry matter and nutrients, on the balance and use of nitrogen in the organism of the animal; on the average time of renewal of dry matter, NDF or lignin; on lacteal production and composition, except for fat content in the milk, which was influenced by the interaction among particle size and NDFf level and on use efficiency of metabolizable energy. Forage particle size should not be considered as an important factor in formulation of diets for milk goats because of the ability they have on fragment particles into homogenous sizes and because of that they do not cause changes on the intake, on use of the nutrients or animal performance.Este trabalho foi realizado com o objetivo de avaliar a importância do tamanho da partícula da forragem em dietas com níveis crescentes de fibra para cabras leiteiras. Para tanto, avaliou-se o comportamento ingestivo; a fragmentação das partículas oferecidas, consumidas, contidas nos compartimentos do trato gastrointestinal (rúmen, omaso e abomaso) e nas fezes; o consumo; a digestibilidade; o balanço de nitrogênio; a massa ruminal; o tempo médio de renovação da fração indigestível no rúmen; a produção e composição lácteas e a eficiência de utilização de energia metabolizável de cabras em lactação. Foram testados os efeitos da combinação de três tamanhos de partícula (2, 5 e 15 cm) e quatro níveis de fibra em detergente neutro oriundo da forragem (FDNf) (34, 41, 49, 57% FDNf). Foram utilizadas 48 cabras multíparas com,em média,51 kg de massa corporal e 60 dias em lactação. O delineamento experimental utilizado foi inteiramente casualizado, em arranjo fatorial 3 x 4, com 4 repetições. A fonte forrageira utilizada foi o feno de capim tifton (Cynodon dactylon), considerado de boa qualidade, contendo 62% de FDN e 15% de PB, fornecido em mistura completa com o concentrado a base de fubá de milho e farelo de soja. O tamanho de partícula da forragem influenciou o comportamento alimentar dos animais, apresentando efeito linear crescente sobre o tempogasto na ingestão de alimentos. Houve interação entre tamanho de partícula e nível de fibra da forragem, quando avaliado o tempo gasto em ingestão, por unidade de fibra consumida. Verificou-se o efeito do tamanho de partícula sobre o consumo de MS e FDN fisicamente efetivos, sendo este último também influenciado pelo nível de FDNf. Não houve influência do tamanho de partícula da forragem sobre o percentual de partículas maiores que 1,19 mm, nem sobre o diâmetro geométrico médio (DGM) das partículas contidas no compartimento ruminal e nas fezes. Houve efeito interativo entre tamanho de partícula e nível de FDNf sobre o percentual de partículas maiores que 1,19mm e do DGM das partículas no compartimento omasal. No compartimento abomasal houve efeito linear decrescente do nível de fibra da forragem sobre o percentual de partículas maiores que 1,19 mm e DGM das partículas. O tamanho de partícula da forragem não afetou o consumo de matéria seca e dos nutrientes, expressos em gramas por dia. No entanto, foi observada interação entre tamanho de partícula e nível de FDNf sobre a concentração de fibra consumida na ração. O tamanho de partícula influenciou quadraticamente sobre a concentração de lignina consumida na ração. Houve efeito interativo do tamanho de partícula e nível de FDNf sobre a concentração de fibra no rúmen. Não houve influência do tamanho de partícula sobre: a digestibilidade da matéria seca e dos nutrientes; o balanço e aproveitamento do nitrogênio no organismo animal; o tempo médio de renovação da matéria seca, FDN ou lignina; a produção e composição láctea, com exceção ao teor de gordura no leite, que foi influenciado pela interação entre tamanho de partícula e nível de FDNf e; as eficiências de utilização da energia metabolizável. O tamanho de partícula da forragem não deve ser considerado fator importante na formulação de dietas de cabras leiteiras pela habilidade que apresentam em fragmentar partículas a tamanhos homogêneos e, por isso, não causar alterações no consumo, utilização de nutrientes ou desempenho animal.Conselho Nacional de Desenvolvimento Científico e Tecnológicoapplication/pdfporUniversidade Federal de ViçosaDoutorado em ZootecniaUFVBRGenética e Melhoramento de Animais Domésticos; Nutrição e Alimentação Animal; Pastagens e ForragiculCinética ruminalTamanho de partículaLantanídeosCabraRuminal kineticsParticle sizeLanthanidesGoatCNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::NUTRICAO E ALIMENTACAO ANIMALTamanho de partícula da forragem em dietas com níveis crescentes de fibra para cabras leiteirasForage particle size at increasing levels of fiber in diets for dairy goatsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALtexto completo.pdfapplication/pdf3169894https://locus.ufv.br//bitstream/123456789/1813/1/texto%20completo.pdf48b91be234c3b444836fa9eeaf2dec04MD51TEXTtexto completo.pdf.txttexto completo.pdf.txtExtracted texttext/plain248711https://locus.ufv.br//bitstream/123456789/1813/2/texto%20completo.pdf.txt6b719817249db2da3f6c6c2873211011MD52THUMBNAILtexto completo.pdf.jpgtexto completo.pdf.jpgIM Thumbnailimage/jpeg3688https://locus.ufv.br//bitstream/123456789/1813/3/texto%20completo.pdf.jpg17acd552564c3cfa51a753e1bcd94a4bMD53123456789/18132016-04-07 23:13:38.006oai:locus.ufv.br:123456789/1813Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452016-04-08T02:13:38LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.por.fl_str_mv Tamanho de partícula da forragem em dietas com níveis crescentes de fibra para cabras leiteiras
dc.title.alternative.eng.fl_str_mv Forage particle size at increasing levels of fiber in diets for dairy goats
title Tamanho de partícula da forragem em dietas com níveis crescentes de fibra para cabras leiteiras
spellingShingle Tamanho de partícula da forragem em dietas com níveis crescentes de fibra para cabras leiteiras
Felisberto, Nivea Regina de Oliveira
Cinética ruminal
Tamanho de partícula
Lantanídeos
Cabra
Ruminal kinetics
Particle size
Lanthanides
Goat
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::NUTRICAO E ALIMENTACAO ANIMAL
title_short Tamanho de partícula da forragem em dietas com níveis crescentes de fibra para cabras leiteiras
title_full Tamanho de partícula da forragem em dietas com níveis crescentes de fibra para cabras leiteiras
title_fullStr Tamanho de partícula da forragem em dietas com níveis crescentes de fibra para cabras leiteiras
title_full_unstemmed Tamanho de partícula da forragem em dietas com níveis crescentes de fibra para cabras leiteiras
title_sort Tamanho de partícula da forragem em dietas com níveis crescentes de fibra para cabras leiteiras
author Felisberto, Nivea Regina de Oliveira
author_facet Felisberto, Nivea Regina de Oliveira
author_role author
dc.contributor.authorLattes.por.fl_str_mv http://lattes.cnpq.br/3480639727563630
dc.contributor.author.fl_str_mv Felisberto, Nivea Regina de Oliveira
dc.contributor.advisor-co1.fl_str_mv Vieira, Ricardo Augusto Mendonça
dc.contributor.advisor-co1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4721711Y8
dc.contributor.advisor-co2.fl_str_mv Queiroz, Augusto César de
dc.contributor.advisor-co2Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783006P5
dc.contributor.advisor1.fl_str_mv Rodrigues, Marcelo Teixeira
dc.contributor.advisor1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788161Y5
dc.contributor.referee1.fl_str_mv Silva, Márcia Maria Cândido da
dc.contributor.referee1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4700519H2
dc.contributor.referee2.fl_str_mv Rodrigues, Carla Aparecida Florentino
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/9248842275534450
contributor_str_mv Vieira, Ricardo Augusto Mendonça
Queiroz, Augusto César de
Rodrigues, Marcelo Teixeira
Silva, Márcia Maria Cândido da
Rodrigues, Carla Aparecida Florentino
dc.subject.por.fl_str_mv Cinética ruminal
Tamanho de partícula
Lantanídeos
Cabra
topic Cinética ruminal
Tamanho de partícula
Lantanídeos
Cabra
Ruminal kinetics
Particle size
Lanthanides
Goat
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::NUTRICAO E ALIMENTACAO ANIMAL
dc.subject.eng.fl_str_mv Ruminal kinetics
Particle size
Lanthanides
Goat
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::NUTRICAO E ALIMENTACAO ANIMAL
description The objective of this work was to evaluate the importance of forage particle size in diets for milk goats. Therefore, it was evaluated the ingestion behavior; the fragmentation of the particles offered, consumed, and contained in compartments of the gastrointestinal tract (rumen, omasum and abomasum)and in the feces; the intake, the digestibility, nitrogen alance; rumen mass; average time of indigestible fraction renewal in the rumen; production and lacteal composition and use efficiency of metabolizable energy of lactating goats. The effects of combination of three particle sizes (2, 5 and 15 cm) and four levels of neutral detergent fiber from the forage (NDFf) (34, 41, 49 and 57% NDFf) were evaluated. Forty-eight multiparous goats at an average of 51 kg of body weight and 60 days of lactation were used. It was used a completely randomized experimental design, in a 3 × 4 factorial scheme with four repetitions. The forage source used was Tifton grass hay (Cynodon dactylon), considered of good quality, containing 62% of NDF and 15% CP, offered in a complete mixture with corn meal and soybean meal based concentrate. Forage particle size influenced feed behavior of the animals, presented a linear effect on the time spent with food ingestion. There was an interaction among particle size and forage fiber level, when it was evaluated the time spent on ingestion per unit of consumed fiber. It was verified the effect of particle size on intake of physically effective DM and NDF. Neutral detergent fiber was also influenced by NDFf. There was no influence of forage particle size on percentage of particles bigger than 1.19 mm, neither on the average geometric diameter (AGD) of the particles contained in rumen compartment and feces. There was an interactive effect among particle size and NDFf on percentage of particles bigger than 1.19 mm and AGD of particles. Forage particle size did not affect dry matter and nutrient intake, originally expressed in grams per day. However, it was observed interaction among particle and NDFf level on the concentration of feed consumed fiber. Particle size influenced in a quadratic manner concentration of lignin consumed in the feed. There was an interactive influence among particle size and NDFf level on the concentration of fiber in the rumen. There was no influence of particle size on digestibility coefficients of dry matter and nutrients, on the balance and use of nitrogen in the organism of the animal; on the average time of renewal of dry matter, NDF or lignin; on lacteal production and composition, except for fat content in the milk, which was influenced by the interaction among particle size and NDFf level and on use efficiency of metabolizable energy. Forage particle size should not be considered as an important factor in formulation of diets for milk goats because of the ability they have on fragment particles into homogenous sizes and because of that they do not cause changes on the intake, on use of the nutrients or animal performance.
publishDate 2011
dc.date.issued.fl_str_mv 2011-02-25
dc.date.available.fl_str_mv 2013-11-25
2015-03-26T12:54:46Z
dc.date.accessioned.fl_str_mv 2015-03-26T12:54:46Z
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dc.identifier.citation.fl_str_mv FELISBERTO, Nivea Regina de Oliveira. Forage particle size at increasing levels of fiber in diets for dairy goats. 2011. 120 f. Tese (Doutorado em Genética e Melhoramento de Animais Domésticos; Nutrição e Alimentação Animal; Pastagens e Forragicul) - Universidade Federal de Viçosa, Viçosa, 2011.
dc.identifier.uri.fl_str_mv http://locus.ufv.br/handle/123456789/1813
identifier_str_mv FELISBERTO, Nivea Regina de Oliveira. Forage particle size at increasing levels of fiber in diets for dairy goats. 2011. 120 f. Tese (Doutorado em Genética e Melhoramento de Animais Domésticos; Nutrição e Alimentação Animal; Pastagens e Forragicul) - Universidade Federal de Viçosa, Viçosa, 2011.
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dc.publisher.department.fl_str_mv Genética e Melhoramento de Animais Domésticos; Nutrição e Alimentação Animal; Pastagens e Forragicul
publisher.none.fl_str_mv Universidade Federal de Viçosa
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