Mananoligossacarídeo e β-glucano na suplementação dietária para juvenis de tilápia-do-nilo mantidos em tanques-rede
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Data
2010-02-04
Autores
Sousa, Andressa Daniela Liranço de [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Este experimento foi conduzido em um empreendimento aquícola, tendo como objetivo a utilização de mananoligossacarídeo (MOS) e ß-glucano, na suplementação dietária do lote experimental, com o intuito de acompanhar o desempenho zootécnico e relacioná-lo aos parâmetros hematológicos, alterações morfológicas do intestino e atividade enzimática (protease, lípase e amilase) de 3000 juvenis de tilápias-do-nilo, mantidos em tanques-rede, com peso médio inicial de 24g ± 0,26. Utilizaram-se nove tanques-rede (6,0 m3) constituindo-se de três tratamentos e três repetições: Tratamento 1: ração comercial sem suplementação (controle); Tratamento 2: 0,1% por tonelada de MOS; Tratamento 3: 0,03% por tonelada de beta glucano purificados. A ração continha 36 % de proteína bruta (PB), incorporados no premix MOS e β-glucano purificado (BIORIGIN®). Os exemplares foram alimentados três vezes ao dia de acordo com a sua biomassa, e, mensalmente, os ajustes foram determinados de acordo com as biometrias. Os parâmetros analisados, físicos e químicos da água (temperatura, °C, oxigênio dissolvido, mg L-1, pH e condutividade elétrica, us cm-1); zootécnicos (peso inicial e final - Pti e Ptf, comprimento total inicial e final - Cti e Ctf, relação Pi x Ct,, fator de condição - K, conversão alimentar aparente -CAA, ganho de peso diário - GPD, taxa de crescimento específico - TCE, taxa de eficiência protéica - TEP e sobrevivência – S); hematológicos (hematócrito, hemoglobina, proteína total, contagem diferencial de leucócitos - CDL, contagem de eritrócitos - Er, contagem total de leucócitos - CTL, contagem total de trombócitos - CTT, volume corpuscular médio e concentração -VCM e hemoglobina corpuscular média – CHCM); morfologia da parte anterior do intestino (altura, altura da parede e espessura do epitélio das vilosidades) e atividade enzimática...
This experiment was conducted at an aquicolous enterprise with the objective of evaluating the use of mannanoligosaccharide (MOS) and ß-glucan as dietary supplements in an experimental lot in order to follow the zootechnical performance, establishing a relationship with the hematological parameters, the morphological alterations of the intestine, and the enzymatic activity (protease, lipase and amylase) of 3000 Nile tilapia juveniles kept in cages, with initial mean weight of 24g ± 0.26. Nine net tanks (6.0 m3) were used, with three treatments and three replications: Treatment 1: commercial feed without supplementation (control); Treatment 2: 0.1% per ton of MOS; Treatment 3: 0.03% per ton of purified beta glucan. The feed contained 36 % of crude protein (CP) incorporated into the premix MOS and purified beta glucan (BIORIGIN®). The fishes were fed three times a day according to their biomass, where the adjustments were determined monthly according to the biometry. The analysed parameters were: physical and chemical parameters of the water (temperature, °C, dissolved oxygen, mg L-1, pH and electrical conductivity, us cm-1); zootechnical (initial and final weight - Wti and Wtf, initial and final total length - Lti and Ltf, relationship Wi x Lt, condition factor - K, apparent feed-conversion - AFC, daily weight gain - DWG, specific growth rate - SGR, protein efficiency ratio - PER and survival rate - S); hematological; (hematocrit, hemoglobin, total protein, leucocyte differential count - LDC, red blood cell count - RBC, total leucocyte count - TLC, total thrombocyte count - TTC, mean corpuscular volume - MCV, and mean corpuscular hemoglobin concentration – MCHC); morphology of the front part of the intestine (height, height of the wall and thickness of the epithelium of the villi) and enzymatic activity (protease, lipase e amylase). The nile tilápia that had received the diet... (Complete abstract click electronic access below)
This experiment was conducted at an aquicolous enterprise with the objective of evaluating the use of mannanoligosaccharide (MOS) and ß-glucan as dietary supplements in an experimental lot in order to follow the zootechnical performance, establishing a relationship with the hematological parameters, the morphological alterations of the intestine, and the enzymatic activity (protease, lipase and amylase) of 3000 Nile tilapia juveniles kept in cages, with initial mean weight of 24g ± 0.26. Nine net tanks (6.0 m3) were used, with three treatments and three replications: Treatment 1: commercial feed without supplementation (control); Treatment 2: 0.1% per ton of MOS; Treatment 3: 0.03% per ton of purified beta glucan. The feed contained 36 % of crude protein (CP) incorporated into the premix MOS and purified beta glucan (BIORIGIN®). The fishes were fed three times a day according to their biomass, where the adjustments were determined monthly according to the biometry. The analysed parameters were: physical and chemical parameters of the water (temperature, °C, dissolved oxygen, mg L-1, pH and electrical conductivity, us cm-1); zootechnical (initial and final weight - Wti and Wtf, initial and final total length - Lti and Ltf, relationship Wi x Lt, condition factor - K, apparent feed-conversion - AFC, daily weight gain - DWG, specific growth rate - SGR, protein efficiency ratio - PER and survival rate - S); hematological; (hematocrit, hemoglobin, total protein, leucocyte differential count - LDC, red blood cell count - RBC, total leucocyte count - TLC, total thrombocyte count - TTC, mean corpuscular volume - MCV, and mean corpuscular hemoglobin concentration – MCHC); morphology of the front part of the intestine (height, height of the wall and thickness of the epithelium of the villi) and enzymatic activity (protease, lipase e amylase). The nile tilápia that had received the diet... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Tilapia (Peixe), Hematologia, Desempenho zootecnico, Enzymatic activity, Zootechnical performance, Hematology, Intestine morphology, Oreochromis niloticus
Como citar
SOUSA, Andressa Daniela Liranço de. Mananoligossacarídeo e β-glucano na suplementação dietária para juvenis de tilápia-do-nilo mantidos em tanques-rede. 2010. 42 f. Tese (doutorado) - Universidade Estadual Paulista, Centro de Aquicultura, 2010.