Tese

Níveis de proteína e energia dietéticos para redução do parasitismo gastrintestinal em ovinos artificialmente infectados

The aim was to evaluate the effects of feeding different crude protein to total digestible nutrients (TDN) ratios on intake, performance, apparent digestibility and nutrient metabolism, carcass characteristics, parasitological and hematological parameters, and biochemical profile in lambs experim...

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Autor principal: Miranda, Rafaela Coelho de
Grau: Tese
Idioma: pt_BR
Publicado em: Universidade Federal do Tocantins 2019
Assuntos:
Nutrição; Proteína metabolizável; Síntese microbiana; Verminose; Nutrition; Metabolizable protein; Microbial synthesis; Verminosis
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
Acesso em linha: http://hdl.handle.net/11612/1178
id ir-11612-1178
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spelling ir-11612-11782019-05-25T06:29:09Z Níveis de proteína e energia dietéticos para redução do parasitismo gastrintestinal em ovinos artificialmente infectados Miranda, Rafaela Coelho de Neiva, José Neuman Miranda Rogério, Marcos Cláudio Pinheiro Nutrição; Proteína metabolizável; Síntese microbiana; Verminose; Nutrition; Metabolizable protein; Microbial synthesis; Verminosis CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA The aim was to evaluate the effects of feeding different crude protein to total digestible nutrients (TDN) ratios on intake, performance, apparent digestibility and nutrient metabolism, carcass characteristics, parasitological and hematological parameters, and biochemical profile in lambs experimentally infected with Haemonchus contortus. A total of 40 male lambs with mean initial weight of 18 ± 1.2 kg and five months old were housed in metabolic cages. The treatments were four different protein:TDN (CP/TDN) (71:597; 103:641; 140:679 and 186:696) to animals infected or not with Haemonchus contortus, totaling eight treatments and five replicates per treatment. A 4 x 2 factorial scheme (four crude protein to TDN ratios and two infection conditions)was used in a completely randomized design. Infection negatively influenced the dry matter intake, neutral detergent fiber intake (g/kg0.75), TDN intake (g/kg0.75), protein and neutral detergent fiber digestibilities, which were lower in infected animals. There was an interaction between diet and infection on gross, digestible and metabolizable energy intakes (Mcal/kgDM), in which infected animals fed CP/TDN 140:679 and 186:696 had lower intakethan those not infected fed the same diets. Energy balance was negative for infected animals receiving CP/TDN 71:597.Purine absorption regard less of infection condition was higher in animals fed CP/TDN140:679 and 186:696 than those receiving the diet with 71:597. Microbial protein synthesis was lower in infected animals fed CP/TDN103:641 and 186:696. Infection decreased metabolizable protein intake in animals receiving CP/TDN71:597; 140:679 and 186: 696diets. Infected animals had lower average daily gain (0.145 kg/day) and lower fat thickness (1.86 mm). There was an interaction (P<0.05) between diet and infection on feed conversion, in which conversion was worse in infected animals fed CP/TDN71:597diet. Carcass weights and yields varied according to the diets. The highest fecal egg count (FEC) was found in animals fed the ratio CP/TDN71:597 (3213.7).Animals receiving CP/TDN71:597 and 186:696 diets had higher number of Haemonchus recovered. The infection reduced the values of globular volume and total plasma proteins. There was an interaction (P<0.05) between diet and infection on the degree of anaemia assessed by the Famacha© method, in which infected animals fed CP/TDN 71:597 had higher Famacha© score (2.16) than those not infected receiving the same diet (1.24). There was an interaction between diet and infection (P<0.05) on albumin concentrations, in which infected animals receiving CP/TDN71:597 had lower albumin concentrations than those not infected fed the same diet. Feeding CP/TDN140:679 and 186:696 diets to lambs provides adequate nutrient supply that allowsa better balance in the relationship between parasite and host. Then, the nutritional plan to be used should be the most suitable for each type of farm and farmer‟s reality. Objetivou-se avaliar a influência de dietas formuladas com diferentes proporções de proteína e nutrientes digestíveis totais (NDT), sobre o consumo, desempenho, digestibilidade aparente e metabolismo de nutrientes, características de carcaça, parâmetros parasitológicos, hematológicos e perfil bioquímico em cordeiros artificialmente com Haemonchus contortus. Foram utilizados 40 cordeiros machos, com peso inicial médio de 18 kg ± 1,2 e cinco meses de idade alojados em gaiolas metabólicas. Os tratamentos foram constituídos de quatro diferentes relações proteína:NDT (RP/NDT) (71:597; 103:641; 140:679 e 186:696), com animais infectados ou não com Haemonchus contortus, perfazendo oito tratamentos experimentais e cinco repetições por tratamento. O delineamento utilizado foi inteiramente casualizado, em esquema fatorial 4 x 2 (quatro relações proteína e NDT e duas condições de infecção). A infecção influenciou o consumo de matéria seca, consumo de fibra em detergente neutro (g/kg0,75), consumo de NDT (g/kg0,75), digestibilidade da proteína e da fibra em detergente neutro, que foram menores nos animais infectados. Houve interação entre dieta e infecção para os consumos de energia bruta, digestível e metabolizável (Mcal/kgMS), onde animais infectados das RP/NDT 140:679 e 186:696 consumiram menor quantidade que os não infectados das mesmas dietas. O balanço energético foi negativo para os animais infectados alimentados com a RP/NDT 71:597. A absorção de purinas independente da condição de infecção nas dietas de RP/NDT 140:679 e 186:696 foi maior que na dieta 71:597. A síntese de nitrogênio e proteína microbiana nas dietas de RP/NDT 103:641 e 186:696 foi menor nos animais infectados. A infecção diminuiu o consumo de proteína metabolizável nas RP/NDT 71:597; 140:679 e 186:696. Animais infectados apresentaram menor ganho médio diário (0,145 kg/dia) e menor espessura de gordura subcutânea (1,86 mm). Houve interação (P<0,05) entre dieta e infecção para conversão alimentar, onde a conversão foi pior nos animais infectados da dieta com RP/NDT71:597. Os pesos e rendimentos de carcaça sofreram variação em função das dietas. A maior contagem de OPG foi encontrada nos animais da RP/NDT 71:597 (3213,7). Animais das dietas de RP/NDT 71:597 e 186:696 apresentaram maior quantidade de Haemonchus recuperados. Houve influência da infecção para os valores de volume globular e proteínas plasmáticas totais, em que animais infectados apresentaram menor valor para essas variáveis). Houve interação (P<0,05) entre dieta e infecção para o grau de anemia pelo método Famacha©, onde os animais infectados e alimentados com RP/NDT 71:597 apresentaram maior grau FAMACHA© (2,16) que os não infectados da mesma dieta (1,24). Houve interação entre dieta e infecção (P<0,05) para as concentrações de albumina, onde animais infectados da dieta de RP/NDT 71:597 apresentaram menores concentrações de albumina que os não infectados da mesma dieta. Dietas de RP/NDT 140:679 e 186:696 proporcionam aos animais suporte de nutrientes que permitem uma melhor situação de equilíbrio na relação entre parasita e hospedeiro, de forma que o plano nutricional a ser utilizado deve ser aquele mais adequado a cada tipo de propriedade e realidade do produtor. 2019-05-13T12:57:11Z 2019-05-13T12:57:11Z 2018-03-09 Tese MIRANDA, Rafaela Coelho de. Níveis de proteína e energia dietéticos para redução do parasitismo gastrintestinal em ovinos artificialmente infectados. 2018. 133f. Tese (Doutorado em Ciência Animal Tropical) – Universidade Federal do Tocantins, Programa de Pós-Graduação em Ciência Animal Tropical, Araguaína, 2018. http://hdl.handle.net/11612/1178 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 Nutrição; Proteína metabolizável; Síntese microbiana; Verminose; Nutrition; Metabolizable protein; Microbial synthesis; Verminosis
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
spellingShingle Nutrição; Proteína metabolizável; Síntese microbiana; Verminose; Nutrition; Metabolizable protein; Microbial synthesis; Verminosis
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
Miranda, Rafaela Coelho de
Níveis de proteína e energia dietéticos para redução do parasitismo gastrintestinal em ovinos artificialmente infectados
topic_facet Nutrição; Proteína metabolizável; Síntese microbiana; Verminose; Nutrition; Metabolizable protein; Microbial synthesis; Verminosis
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA
description The aim was to evaluate the effects of feeding different crude protein to total digestible nutrients (TDN) ratios on intake, performance, apparent digestibility and nutrient metabolism, carcass characteristics, parasitological and hematological parameters, and biochemical profile in lambs experimentally infected with Haemonchus contortus. A total of 40 male lambs with mean initial weight of 18 ± 1.2 kg and five months old were housed in metabolic cages. The treatments were four different protein:TDN (CP/TDN) (71:597; 103:641; 140:679 and 186:696) to animals infected or not with Haemonchus contortus, totaling eight treatments and five replicates per treatment. A 4 x 2 factorial scheme (four crude protein to TDN ratios and two infection conditions)was used in a completely randomized design. Infection negatively influenced the dry matter intake, neutral detergent fiber intake (g/kg0.75), TDN intake (g/kg0.75), protein and neutral detergent fiber digestibilities, which were lower in infected animals. There was an interaction between diet and infection on gross, digestible and metabolizable energy intakes (Mcal/kgDM), in which infected animals fed CP/TDN 140:679 and 186:696 had lower intakethan those not infected fed the same diets. Energy balance was negative for infected animals receiving CP/TDN 71:597.Purine absorption regard less of infection condition was higher in animals fed CP/TDN140:679 and 186:696 than those receiving the diet with 71:597. Microbial protein synthesis was lower in infected animals fed CP/TDN103:641 and 186:696. Infection decreased metabolizable protein intake in animals receiving CP/TDN71:597; 140:679 and 186: 696diets. Infected animals had lower average daily gain (0.145 kg/day) and lower fat thickness (1.86 mm). There was an interaction (P<0.05) between diet and infection on feed conversion, in which conversion was worse in infected animals fed CP/TDN71:597diet. Carcass weights and yields varied according to the diets. The highest fecal egg count (FEC) was found in animals fed the ratio CP/TDN71:597 (3213.7).Animals receiving CP/TDN71:597 and 186:696 diets had higher number of Haemonchus recovered. The infection reduced the values of globular volume and total plasma proteins. There was an interaction (P<0.05) between diet and infection on the degree of anaemia assessed by the Famacha© method, in which infected animals fed CP/TDN 71:597 had higher Famacha© score (2.16) than those not infected receiving the same diet (1.24). There was an interaction between diet and infection (P<0.05) on albumin concentrations, in which infected animals receiving CP/TDN71:597 had lower albumin concentrations than those not infected fed the same diet. Feeding CP/TDN140:679 and 186:696 diets to lambs provides adequate nutrient supply that allowsa better balance in the relationship between parasite and host. Then, the nutritional plan to be used should be the most suitable for each type of farm and farmer‟s reality.
author_additional Neiva, José Neuman Miranda
author_additionalStr Neiva, José Neuman Miranda
format Tese
author Miranda, Rafaela Coelho de
title Níveis de proteína e energia dietéticos para redução do parasitismo gastrintestinal em ovinos artificialmente infectados
title_short Níveis de proteína e energia dietéticos para redução do parasitismo gastrintestinal em ovinos artificialmente infectados
title_full Níveis de proteína e energia dietéticos para redução do parasitismo gastrintestinal em ovinos artificialmente infectados
title_fullStr Níveis de proteína e energia dietéticos para redução do parasitismo gastrintestinal em ovinos artificialmente infectados
title_full_unstemmed Níveis de proteína e energia dietéticos para redução do parasitismo gastrintestinal em ovinos artificialmente infectados
title_sort níveis de proteína e energia dietéticos para redução do parasitismo gastrintestinal em ovinos artificialmente infectados
publisher Universidade Federal do Tocantins
publishDate 2019
url http://hdl.handle.net/11612/1178
_version_ 1787134204039921664
score 11.755432

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