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| Figueiredo Júnior, Jalceyr Pessoa; Costa, Fernando Guilherme Perazzo; Guerra, Ricardo Romão; Santana, Marcelo Helder Medeiros; Lima, Matheus Ramalho de; Pinheiro, Sarah Gomes. |
| An experiment was carried out to evaluate the requirement of digestible methionine for growing pullets at growth phase (7 to 12 weeks of age). A completely randomized design was distributed in five treatments, six replicates, and 15 pullets per experimental unit. 450 Dekalb White pullets from the 7th weeks of age, with an average initial weight of 313.14 ± 12.49 g were used. Dietary treatments consisted in five diets supplemented with DL-Methionine which resulted in five levels of digestible methionine (0.266, 0.294, 0.322, 0.350, and 0.378 %). Performance, serological blood, histopathology and histomorphometry data were evaluated. Quadratic responses were observed for final live weight (p < 0.0143), weight gain (p < 0.0073), feed conversion... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzymatic profile Essential amino acid Histology Morphometry. enzymatic profile; Essential amino acid; Histology; Morphometry.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47222 |
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| Rodrigues,Rômulo Batista; Lui,Tatiane Andressa; Neu,Dacley Hertes; Boscolo,Wilson Rogério; Bittencourt,Fábio. |
| ABSTRACT This study verified the effect of valine on the zootechnical performance, percentage composition and growth of skeletal muscle fibre in fingerlings of Nile tilapia. A total of 270 fish (average initial weight 1.57 ± 0.05 g and total initial length 4.16 ± 0.46 cm) were used, distributed in 18 tanks (250 litres), in a completely randomised design with six treatments and three replications. Six diets (26.81% DP and 3200.00 kcal DE) were formulated with increasing levels of valine (0.82, 0.86, 0.98, 1.04, 1.10 and 1.26% of the diet). The zootechnical performance, percentage composition of the fish, and muscle-fibre distribution were evaluated. There was no effect from the different levels of valine (P>0.05) on zootechnical performance, percentage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Essential amino acid; Aquaculture; Zootechnical performance; Oreochromis niloticus. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000300467 |
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