Digestibilidade e parâmetros ruminais de bovinos recebendo dietas de alto grão com grão de soja
This study aimed to evaluate the whole soybeans as a substitute for protein pellets in highgrain diets, with or without roughage, for cattle and its effects on dry matter (DM) and nutrients intake and digestibility, as well determine the ruminal and blood parameters. Four crossbred males cannulate...
| Autor principal: | Tavares, Daniel Henrique Souza |
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| Grau: | Dissertação |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Tocantins
2020
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| Assuntos: | |
| Acesso em linha: |
http://hdl.handle.net/11612/2022 |
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ir-11612-2022 |
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dspace |
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ir-11612-20222020-06-05T06:01:14Z Digestibilidade e parâmetros ruminais de bovinos recebendo dietas de alto grão com grão de soja Tavares, Daniel Henrique Souza Bozorg, Vera Lúcia de Araújo Miotto, Fabrícia Rocha Chaves alto-concentrado pH ruminal soja inteira crua suplementação com óleo ureia plasmática CNPQ::CIENCIAS AGRARIAS This study aimed to evaluate the whole soybeans as a substitute for protein pellets in highgrain diets, with or without roughage, for cattle and its effects on dry matter (DM) and nutrients intake and digestibility, as well determine the ruminal and blood parameters. Four crossbred males cannulated in the rumen were used and distributed in a 4 x 4 Latin Square Design (four animals and four diets) in a 2 x 2 factorial arrangement, two sources of protein (protein pellet vs. whole raw soybean), with or without roughage (Mombasa grass silage corresponding at 15% of the dry matter of the diet). The trial lasted 80 days. There was a higher dry matter intake (DMI) for the diet with the pellet compared to the diet with soybeans (P = 0.04, 13.57 vs. 9.91 animal-1 day-1). The inclusion of roughage in the diet increased DMI (P = 0.05). Crude protein intake was not affected by protein sources or inclusion of roughage (P> 0.10). The inclusion of roughage in the diet allowed an increase in the neutral detergent fiber intake (P <0.01), while the use of soybeans did not change the ether extract intake (P> 0.10). The use of the soybean replacing the pellet and the inclusion of 15% roughage in the diet promoted a similar diets total digestible nutrients intake (TDN) (p> 0.10) with an average of 8.71 kg day -1. There was no influence of diets on the digestibility of DM, CP or TDN of the diets (P> 0.10), 0.57; 0.49 and 74.47%, respectively. Greater total carbohydrates digestibility was observed for diets without roughage (0.73 vs. 0.56). The diets with roughage had a ruminal pH mean higher than those without roughage (P = 0.10), 6.13 vs. 5.77. The use of soybeans in the diet allowed a similar concentration of ruminal ammoniacal nitrogen (P> 0.10), 5.26 mg, when it was compared to the use of the protein pellet. There was also no influence of diets on plasma levels of urea, total proteins, albumin, triglycerides, creatinine, AST and ALT (P> 0.10). Higher amounts of cholesterol and glucose were found in the plasma of animals fed soybeans as a protein source (P = 0.05). The use of whole raw soybean as a protein source in high-grain diets for cattle reduces the intake of dry matter, however, it allows to keep the intake of nutrients and NDT without changing the ammonia nitrogen levels and rumen pH, in addition to maintaining blood parameters within normal concentrations. The supply of 15% silage in a high-grain diet for feedlot cattle increases the dry matter intake and maintains the energy intake of the diet, in addition to maintaining the average ruminal pH above 6.0. Objetivou-se avaliar o grão de soja inteiro como substituto do pellet proteico em dietas de alto concentrado, com ou sem volumoso, para bovinos, e seus efeitos sobre o consumo, a digestibilidade de matéria seca (MS) e nutrientes, e parâmetros ruminais e sanguíneos. Utilizou-se quatro machos mestiços canulados no rúmen distribuídos em delineamento experimental em quadrado latino 4 x 4 (quatro animais com quatro dietas) com arranjo fatorial 2 x 2, duas fontes de proteína (núcleo peletizado ou soja grão inteiro cru), com ou sem volumoso (silagem de capim Mombaça em 15% da matéria seca da dieta) confinados por 80 dias . Houve maior consumo de matéria seca (CMS) para a dieta com núcleo peletizado em comparação à dieta com grão de soja (P = 0,04, 13,57 vs. 9,91 animal-1 dia-1). A inclusão de volumoso na dieta promoveu elevação CMS (P = 0,05). O consumo de proteína bruta (CPB) não foi alterado pelas fontes de proteína ou inclusão de volumoso (P>0,10). A inclusão de volumoso na dieta permitiu aumento no consumo de fibra em detergente neutro (FDN) (P<0,01), enquanto o uso de grão de soja não provocou alterações no consumo de extrato etéreo (P>0,10). O uso de grão de soja em substituição ao núcleo peletizado e a inclusão de 15% de volumoso na dieta promoveram semelhante consumo de nutrientes digestíveis totais das dietas (NDT) aos animais (p>0,10) com média de 8,71 kg dia -1. Não houve influência das dietas sobre a digestibilidade da MS, PB ou sobre o NDT das dietas (P>0,10), 0,57; 0,49 e 74,47%, respectivamente. Maior digestibilidade de carboidratos totais foi observada para as dietas sem volumoso (0,73 vs. 0,56). As dietas com volumoso apresentaram pH ruminal médio maior que aquelas sem volumoso (P=0,10), 6,13 vs. 5,77. O uso de grão de soja na dieta permitiu semelhante concentração de nitrogênio amoniacal no rúmen (P>0,10), 5,26 mg, quando comparado ao uso do núcleo peletizado. Também não foi observada influência das dietas sobre os níveis plasmáticos de ureia, proteínas totais, albumina triglicerídeos, creatinina, AST e ALT (P>0,10). Maiores quantidades de colesterol e glicose foram encontradas no plasma de animais alimentados com grãos de soja como fonte de proteína (P = 0,05). O uso do grão de soja integral como fonte proteica em dietas de alto grão para bovinos reduz o consumo da matéria seca, porém, permiti a manutenção do consumo de nutrientes e NDT sem alterar os níveis de nitrogênio amoniacal e pH do rúmen, além de manter os parâmetros sanguíneos dentro das concentrações normais. O fornecimento de 15% de silagem em dieta de alto grão para bovinos confinados aumenta o consumo de matéria seca e mantém o consumo de energia da dieta, além de permitir a manutenção do pH ruminal médio acima de 6,0. 2020-06-04T14:09:35Z 2020-06-04T14:09:35Z 2020 Dissertação TAVARES, Daniel Henrique Souza. Digestibilidade e parâmetros ruminais de bovinos recebendo dietas de alto grão com grão de soja. 2020. 51f. Dissertação (Mestrado em Ciência Animal Tropical) – Universidade Federal do Tocantins, Programa de Pós-Graduação em Ciência Animal Tropical, Araguaína, 2020. http://hdl.handle.net/11612/2022 pt_BR Open Access application/pdf application/pdf Universidade Federal do Tocantins BR Programa de Pós-Graduação em Ciência Animal Tropical - PPGCat Araguaína |
| institution |
Repositório Institucional - Universidade Federal do Tocantins - UFT |
| collection |
RepositorioUFT |
| language |
pt_BR |
| topic |
alto-concentrado pH ruminal soja inteira crua suplementação com óleo ureia plasmática CNPQ::CIENCIAS AGRARIAS |
| spellingShingle |
alto-concentrado pH ruminal soja inteira crua suplementação com óleo ureia plasmática CNPQ::CIENCIAS AGRARIAS Tavares, Daniel Henrique Souza Digestibilidade e parâmetros ruminais de bovinos recebendo dietas de alto grão com grão de soja |
| topic_facet |
alto-concentrado pH ruminal soja inteira crua suplementação com óleo ureia plasmática CNPQ::CIENCIAS AGRARIAS |
| description |
This study aimed to evaluate the whole soybeans as a substitute for protein pellets in highgrain diets, with or without roughage, for cattle and its effects on dry matter (DM) and
nutrients intake and digestibility, as well determine the ruminal and blood parameters. Four
crossbred males cannulated in the rumen were used and distributed in a 4 x 4 Latin Square
Design (four animals and four diets) in a 2 x 2 factorial arrangement, two sources of protein
(protein pellet vs. whole raw soybean), with or without roughage (Mombasa grass silage
corresponding at 15% of the dry matter of the diet). The trial lasted 80 days. There was a
higher dry matter intake (DMI) for the diet with the pellet compared to the diet with soybeans
(P = 0.04, 13.57 vs. 9.91 animal-1 day-1). The inclusion of roughage in the diet increased
DMI (P = 0.05). Crude protein intake was not affected by protein sources or inclusion of
roughage (P> 0.10). The inclusion of roughage in the diet allowed an increase in the neutral
detergent fiber intake (P <0.01), while the use of soybeans did not change the ether extract
intake (P> 0.10). The use of the soybean replacing the pellet and the inclusion of 15%
roughage in the diet promoted a similar diets total digestible nutrients intake (TDN) (p> 0.10)
with an average of 8.71 kg day -1. There was no influence of diets on the digestibility of DM,
CP or TDN of the diets (P> 0.10), 0.57; 0.49 and 74.47%, respectively. Greater total
carbohydrates digestibility was observed for diets without roughage (0.73 vs. 0.56). The diets
with roughage had a ruminal pH mean higher than those without roughage (P = 0.10), 6.13
vs. 5.77. The use of soybeans in the diet allowed a similar concentration of ruminal
ammoniacal nitrogen (P> 0.10), 5.26 mg, when it was compared to the use of the protein
pellet. There was also no influence of diets on plasma levels of urea, total proteins, albumin,
triglycerides, creatinine, AST and ALT (P> 0.10). Higher amounts of cholesterol and glucose
were found in the plasma of animals fed soybeans as a protein source (P = 0.05). The use of
whole raw soybean as a protein source in high-grain diets for cattle reduces the intake of dry
matter, however, it allows to keep the intake of nutrients and NDT without changing the
ammonia nitrogen levels and rumen pH, in addition to maintaining blood parameters within
normal concentrations. The supply of 15% silage in a high-grain diet for feedlot cattle
increases the dry matter intake and maintains the energy intake of the diet, in addition to
maintaining the average ruminal pH above 6.0. |
| author_additional |
Bozorg, Vera Lúcia de Araújo |
| author_additionalStr |
Bozorg, Vera Lúcia de Araújo |
| format |
Dissertação |
| author |
Tavares, Daniel Henrique Souza |
| title |
Digestibilidade e parâmetros ruminais de bovinos recebendo dietas de alto grão com grão de soja |
| title_short |
Digestibilidade e parâmetros ruminais de bovinos recebendo dietas de alto grão com grão de soja |
| title_full |
Digestibilidade e parâmetros ruminais de bovinos recebendo dietas de alto grão com grão de soja |
| title_fullStr |
Digestibilidade e parâmetros ruminais de bovinos recebendo dietas de alto grão com grão de soja |
| title_full_unstemmed |
Digestibilidade e parâmetros ruminais de bovinos recebendo dietas de alto grão com grão de soja |
| title_sort |
digestibilidade e parâmetros ruminais de bovinos recebendo dietas de alto grão com grão de soja |
| publisher |
Universidade Federal do Tocantins |
| publishDate |
2020 |
| url |
http://hdl.handle.net/11612/2022 |
| _version_ |
1787134433598373888 |
| score |
11.755432 |