Dissertation/ Thesis
Níveis de metionina+cistina digestíveis para aves leves na fase de reposição e seus efeitos residuais
| العنوان: | Níveis de metionina+cistina digestíveis para aves leves na fase de reposição e seus efeitos residuais |
|---|---|
| المؤلفون: | Figueiredo Júnior, Jalceyr Pessoa |
| المساهمون: | Costa, Fernando Guilherme Perazzo, http://lattes.cnpq.br/7950825762365762, Guerra, Ricardo Romão |
| بيانات النشر: | Universidade Federal da Paraíba Brasil Zootecnia Programa de Pós-Graduação em Zootecnia UFPB |
| سنة النشر: | 2023 |
| المجموعة: | Universidade Federal da Paraiba: Biblioteca Digital de Teses e Dissertações |
| مصطلحات موضوعية: | Aminoácidos sulfurosos, Desempenho, Efeito residual, CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::NUTRICAO E ALIMENTACAO ANIMAL |
| الوصف: | The objective was to determine the nutritional requirement of methionine and cystine (ASF) digestible for replacement light pullets 1 to 6 weeks and 7 to 12 weeks of age and evaluate the effects on egg production phase. Were developed eight experiments, divided into four experiments from 1 at 6 weeks and four experiments in phase 7 to 12 weeks of age, at different production stages: initial (1 to 6 weeks), create (7 to 12 weeks), pre laying (18 to 29 weeks), posture I (33 a 49 weeks) and posture II (54 to 70 weeks). It was used a completely randomized design with six levels of methionine and cystine, six replicates and 30 birds per experimental unit (UE) for the initial phase, six replicates and 15 birds/UE for the create phase, eight replicates and 10 birds/UE in pre laying phase, six replicates and 8 birds/UE for posture I phase, and seven replicates and 4 birds/UE for posture II. The dietary treatments consisted of a positive control that met requirements of ASF according to the NRC (1994), and five other diets with levels of digestible ASF formulated based Brazilian tables nutritional requirements, equivalent to 80, 90, 100, 110 and 120% of the nutritional requirements for initial and create phases. Were evaluated performance data and serology in the initial and create phases, and performance and egg quality in pre laying and posture phases. For initial phase there was a quadratic effect on feed intake, feed conversion, lysine intake, enzymatic activity of alanine aminotransferase, gamma-glutamyltransferase, serum creatinine and albumin due to levels of ASF digestible, and the requirements for these characteristics 89.78% (0.575%), 114.33% (0.732%), 89.37% (0.572%), 100% (0.640%), 100.40% (0.643%), 104.30% (0.668%) and 111.88% (0.716%), respectively. For create phase there was a quadratic effect on final body weight, weight gain, feed conversion and enzymatic activity of gamma-glutamyltransferase due to levels of ASF digestible, and the requirements for these characteristics 110.60% (0.550%), 111.22% ... |
| نوع الوثيقة: | thesis |
| اللغة: | Portuguese |
| Relation: | https://repositorio.ufpb.br/jspui/handle/123456789/26155 |
| الاتاحة: | https://repositorio.ufpb.br/jspui/handle/123456789/26155 |
| Rights: | Acesso aberto ; Attribution-NonCommercial-NoDerivs 3.0 Brazil ; http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
| رقم الانضمام: | edsbas.E6C45B6D |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |