Modelo matemático para estimar os níveis ótimos de lisina, metionina+cistina, treonina e triptofano para codornas japonesas em produção
Carregando...
Data
2016-11-21
Autores
Sarcinelli, Miryelle Freire [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
Objetivou-se com esta pesquisa determinar as respostas de codornas japonesas e a elaboração de modelos matemáticos para determinar o nível ótimo dessas aves à ingestão de lisina, metionina+cistina, treonina e triptofano com base no modelo fatorial. Foram realizados quatro ensaios experimentais, utilizando 392 codornas japonesas no pico de postura em cada ensaio. Os ensaios foram delineados inteiramente ao acaso, com sete tratamentos e sete repetições compostas por sete aves. Os tratamentos consistiram de níveis crescentes de cada aminoácido teste. Os níveis propostos de lisina variaram de 0,402 a 1,409%, met+cis de 0,347a 1,155%, treonina de 0,254 a 0,845% e triptofano de 0,089 a 0,296% dos aminoácidos teste. Esses níveis foram estabelecidos para compreender todas as exigências (mantença, resposta e estabilidade ou platô de resposta). Para cada aminoácido foi estudado um nível controle com objetivo de confirmar a limitação do respectivo aminoácido teste. O período experimental foi de sete semanas, sendo três de adaptação e as outras quatro para elaboração do modelo fatorial. Nesse período foram acompanhados o consumo de ração, a produção de ovos, o peso de ovos e o peso corporal. As variáveis estudadas foram, consumo de ração (g), consumo do aminoácido teste (g/ave/dia), peso médio do ovo (g), massa de ovos (g) e peso das aves (g). As respostas de produção foram ajustadas pelo modelo broken line e modelo fatorial para fracionar as exigências em mantença e produção de ovos, bem como calcular o nível para otimizar a massa de ovos da população. Além disso foi estimado as exigências dos aminoácidos pelo Reading Model. O modelo broken line estimou a máxima resposta para massa de ovos de 9,67; 9,31; 9,49 e 10,37 g / d para Lis, Thr, Met + Cys e Trp, respectivamente. Os valores de m determinados pela função monomolecular foram de 156, 64, 176 e 47 mg / BWkg0,75 por dia e os valores de a determinados pela linha tracejada com duas inclinações foram de 21, 17, 15 e 4 mg / g para Lis, Thr, Met + Cys e Trp. A ingestão de aminoácidos, a produção de massa de ovos (EO) e peso corporal (PC) foram utilizadas para ajustar os parâmetros do Reading Model. Com base nos parâmetros foi aplicado o método da equação exata e de simulação considerando, 10.000 aves. A recomendação de ótimo econômico baseada na equação exata foi 308, 231, 189 e 65 mg de Lys, MetCys, Thr e Trp por ave.dia, respectivamente. Aplicando a simulação a recomendação para Lys, MetCys, Thr e Trp foi de 287, 219, 181 e 63 mg por ave.dia, respectivamente.
The objective of this research was to determine the responses to Japanese quails and the elaboration of mathematical models for the determination of the levels of lysine, threonine, tryptophan and methionine + cystine water intake. Four experimental trials were carried out using 392 Japanese quails Posture peak in each test. The trials were designed entirely at random, with seven treatments and seven replicates composed of seven birds. Treatments consisted of increasing levels of each amino acid test. Proposed lysine levels ranged from 0.402 to 1.409%, met + cis from 0.347 to 1.155%, threonine from 0.254 to 0.845% and tryptophan from 0.089 to 0.296% of the test amino acids. These levels were established to understand all requirements (maintenance, response and stability or response plateau). For each amino acid a control level was studied in order to confirm the limitation of the respective amino acid test. The experimental period was seven weeks, three of them being adapted and the other four for elaboration of the factorial model. In this period, the consumption of feed, egg production, egg weight and body weight were monitored. The variables studied were feed intake (g), test amino acid consumption (g / bird / day), mean egg weight (g), egg mass (g) and bird weight (g). The production responses were adjusted by the broken line model and factorial model to fractionate the maintenance and egg production requirements, as well as to calculate the level to optimize the egg mass of the population. In addition, the amino acid requirements of the Reading Model were estimated. The broken line model estimated the maximum response for egg mass of 9.67; 9.31; 9.49 and 10.37 g / d for Lys, Thr, Met + Cys and Trp, respectively. The values of m determined by the monomolecular function were 156, 64, 176 and 47 mg / Bwkg0.75 per day and the values of a determined by the dashed line with two slopes were 21, 17, 15 and 4 mg / g for Lys , Thr, Met + Cys and Trp. Amino acid intake, egg mass (EO) and body weight (BW) were used to adjust the Reading Model parameters. Based on the parameters, the exact and simulation equation method was applied considering 10,000 birds. The optimum economic recommendation based on the exact equation was 308, 231, 189 and 65 mg Lys, MetCys, Thr and Trp per day, respectively. Applying the simulation the recommendation for Lys, MetCys, Thr and Trp was 287, 219, 181 and 63 mg per day, respectively.
The objective of this research was to determine the responses to Japanese quails and the elaboration of mathematical models for the determination of the levels of lysine, threonine, tryptophan and methionine + cystine water intake. Four experimental trials were carried out using 392 Japanese quails Posture peak in each test. The trials were designed entirely at random, with seven treatments and seven replicates composed of seven birds. Treatments consisted of increasing levels of each amino acid test. Proposed lysine levels ranged from 0.402 to 1.409%, met + cis from 0.347 to 1.155%, threonine from 0.254 to 0.845% and tryptophan from 0.089 to 0.296% of the test amino acids. These levels were established to understand all requirements (maintenance, response and stability or response plateau). For each amino acid a control level was studied in order to confirm the limitation of the respective amino acid test. The experimental period was seven weeks, three of them being adapted and the other four for elaboration of the factorial model. In this period, the consumption of feed, egg production, egg weight and body weight were monitored. The variables studied were feed intake (g), test amino acid consumption (g / bird / day), mean egg weight (g), egg mass (g) and bird weight (g). The production responses were adjusted by the broken line model and factorial model to fractionate the maintenance and egg production requirements, as well as to calculate the level to optimize the egg mass of the population. In addition, the amino acid requirements of the Reading Model were estimated. The broken line model estimated the maximum response for egg mass of 9.67; 9.31; 9.49 and 10.37 g / d for Lys, Thr, Met + Cys and Trp, respectively. The values of m determined by the monomolecular function were 156, 64, 176 and 47 mg / Bwkg0.75 per day and the values of a determined by the dashed line with two slopes were 21, 17, 15 and 4 mg / g for Lys , Thr, Met + Cys and Trp. Amino acid intake, egg mass (EO) and body weight (BW) were used to adjust the Reading Model parameters. Based on the parameters, the exact and simulation equation method was applied considering 10,000 birds. The optimum economic recommendation based on the exact equation was 308, 231, 189 and 65 mg Lys, MetCys, Thr and Trp per day, respectively. Applying the simulation the recommendation for Lys, MetCys, Thr and Trp was 287, 219, 181 and 63 mg per day, respectively.
Descrição
Palavras-chave
Aminoácidos, Mantença, Massa de ovos, Reading model, Amino acids, Egg mass, Maintainance