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Search Results: 1 - 10 of 223 matches for " Aldi;Boscolo "
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Desenvolvimento de larvas de Steindachneridion sp. em diferentes condi??es de refúgio e luminosidade
Feiden, Aldi;Hayashi, Carmino;Boscolo, Wilson Rogério;Reidel, Adilson;
Pesquisa Agropecuária Brasileira , 2006, DOI: 10.1590/S0100-204X2006000100018
Abstract: the influence of luminosity and of the use of refuges on the initial development of steindachneridion sp. garavello (siluriforme: pimelodidae) larvae was evaluated. a thousand larvae 18.02 mm high and 62.2 mg weight were used in an entirely randomized design, with five treatments and four replicates, in 35 l-aquarium during 22 days. the treatments consisted on the following environments: darkness without refuges, clear with artificial refuge, darkness with artificial refuge, clear with natural refuge and clear without refuge. all larvae received the same feeding during the experiment. the best survival rates were found for darkness without refuges, clear with artificial refuge and clear without refuge, with 84, 76 and 70%, respectively. the best development was in darkness and without refuges. the treatment darkness with artificial refuge provided significant differences in relation to the other treatments as far as survival and weight are concerned, showing high heterogeneity for weight. environment without refuges are the most appropriate for the larval development of this specie.
Desenvolvimento de larvas de surubim-do-igua?u (Steindachneridion melanodermatum) submetidas a diferentes dietas
Feiden, Aldi;Hayashi, Carmino;Boscolo, Wilson Rogério;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000800002
Abstract: an assay was conducted to evaluate the development of igua?u surubim (steindachneridion melanodermatum) larvae fed different diets. the experiment was analyzed as a complete randomized design with five treatments and four replicates, in 35 l-aquaria, each one with 15 larvae (8.35±0.85 mm and 6.75±0.64 mg). the treatments consisted of five feeding programs: artemia (a); diet (d); zooplankton (z); artemia with diet (a+d); and zooplankton with diet (z+d). larvae development was evaluated in illuminated environment during 29 days. for larvae feeding evaluation, three larvae were collected every three days, in five additional aquaria for stomach content analysis. in the a+d and z+d treatments, the larvae average weight (659 and 571 mg) was significantly higher than the other treatments. the combinations of feeds resulted in better results and, in treatment r, it was observed survival rate of 1.7, that differs from the other treatments. cannibalism rate was higher in d and z treatments, with values of 60 and 25%, respectively. the a+d treatment provided the best development and the highest survival rate for steindachneridion sp larvae.
Black bass (Micropterus salmoides, Lacepède 1802) fingerlings performance and survival, submitted to the alimentary conditioning, using different proteics patés / Desempenho e sobrevivência de alevinos de black bass (Micropterus salmoides, Lacepède 1802), submetidos ao condicionamento alimentar, utilizando diferentes patês protéicos
Aldi Feiden,Eduardo Ferrari,Wilson Rogério Boscolo,Marcio Freitag
Semina : Ciências Agrárias , 2008,
Abstract: The aim of this study was to evaluate the use of artificial rations with different proteics patés incorporated in the black bass (Micropterus salmoides) fingerlings diet. 320 fingerlings, with initial average weight of 0,57±0,1g and lenght of 3,61±0,21cm, respectively were used. The fish were distributed in an entirely casualized delineation in 32 polypropylene boxes of 310 liters, with 4 treatments and 8 repetitions. One reference ration (RR) with 38% PB as diet base was used, being added to each treatment proteics patés (PP), composites of bovine heart (CB), eviscerate sardine (SE), Chilean fish flour (FP) and tilapia fillet (FT). During the alimentary training good acceptance of the artificial diets was observed, with better performance results for the treatments with FP and FT. O objetivo deste trabalho foi avaliar a utiliza o de ra es artificiais com diferentes patês protéicos incorporados na dieta de alevinos de black bass (Micropterus salmoides). Foram utilizados 320 alevinos, com peso e comprimento inicial médio de 0,57±0,1g e 3,61±0,21cm, respectivamente. Os peixes foram distribuídos em um delineamento inteiramente casualizado em 32 caixas de polipropileno de 310 litros, com 4 tratamentos e 8 repeti es. Utilizou-se uma ra o referência (RR) com 38% PB como base da dieta, sendo adicionada patês protéicos (PP) referente a cada tratamento, compostos por cora o bovino (CB), sardinha eviscerada (SE), farinha de peixe chilena (FP) e filé de tilápia (FT). Durante o treinamento alimentar foi observado boa aceita o as dietas artificiais, com melhores resultados de desempenho para os tratamentos com FP e FT.
Tilapia by-product meal in rations for Nile tilapia (Oreochromis niloticus) fingerlings/ Farinha de resíduos da filetagem de tilápia em ra es para alevinos de tilápia do Nilo (Oreochromis niloticus)
Aldi Feiden,Wilson R. Boscolo,Altevir Signor,Arcangelo A. Signor
Semina : Ciências Agrárias , 2005,
Abstract: Objectifying to evaluate the inclusion of tilapia processing residues (FT) in the feeding of Nile tilapia (Oreochromis niloticus) fingerlings, 125 Nile tilapia fingerlings (with average initial weight of 0.72±0.19g) were distributed in a completely randomized design with five treatments and five repetitions in 25 aquariums (30L). The rations were formulated to contain 0, 5, 10, 15% of FT and 0% FT plus methionine (0+met). Isoproteics, isocalcitics, isophosphorics and isoenergetics diets were used. After 28 days of experiment, final weight (PF), weight gain (GP), feed conversion ratio (CA) and survival (SO), were evaluated. No differences were observed (P>0.05) for the studied parameters. It was concluded that the FT can be used up to 15% in substitution to the soybean meal in the diet of nile tilapia fingerlings. Objetivando avaliar a inclus o de farinha de resíduos da filetagem de tilápias (FT) na alimenta o de alevinos de tilápia do Nilo (Oreochromis niloticus), foram utilizados 125 alevinos de tilápia do Nilo com peso inicial médio de 0,72±0,19g, distribuídos em um delineamento inteiramente casualizado com cinco tratamentos e cinco repeti es, em 25 aquários (30L cada). As ra es foram formuladas de forma a conterem 0, 5, 10, 15% de FT e 0% de FT mais metionina (0+met), sendo as mesmas isoenergéticas isoprotéicas, isocalcíticas e isofosfóricas. Após 28 dias de experimento foram avaliados as médias de peso final (PF), ganho de peso (GP), convers o alimentar aparente (CA) e sobrevivência (SO). N o foram observadas diferen as (P>0,05) entre os parametros avaliados. Conclui-se que a FT pode ser utilizada em até 15% em substitui o ao farelo de soja em ra es para alevinos de tilápia sem causar prejuízo ao seu desempenho.
Chemical products for Ichthyophthirius multifiliis, Fouquet (1876) controll in surubim do Igua u Steindachneridion sp., Garavello (1991) Fingerlings / Utiliza o de produtos químicos no controle de Ichthyophthirius multifiliis, Fouquet (1876) em alevinos de surubim do Igua u Steindachneridion sp., Garavello (1991)
Sidnei Klein,Aldi Feiden,Wilson R. Boscolo,Adilson Reidel
Semina : Ciências Agrárias , 2004,
Abstract: This experiment aimed to control the Ichthyophthirius multifiliis parasite in Steindachneridion sp. fingerlins. One hundred and eighty fingerlins distributed in an experimental delineation entirely randomized, with six treatments and six repetitions in 28L aquariums was used. The treatments had consisted of inoculations and banns: Inoculations with NaCl 1% (T1); Formaline 25 mg.L-1 (T2) and KMnO4 mg.L-1 (T3). For banns, with NaCl 3 % per 10 minutes (T4); Formol 250 mg.L-1 for 1 hour (T5) and KmnO4 mg.L-1 during 10 minutes (T6). The period of the experiment was seven days. The T2 treatment presented better resulted scrumbling 50% the infestation with 80% of survival of the fingerlins registering a significant difference. Este experimento objetivou controlar o parasita Ichthyophthirius multifiliis em alevinos de surubim do Igua u Steindachneridion sp. Foram utilizados 180 alevinos distribuídos em um delineamento experimental inteiramente casualizado com seis tratamentos e seis repeti es em aquários com 28L. Os tratamentos consistiram em inocula es e banhos: Inocula es com NaCl (T1); Formol 25 mg.L-1 (T2) e KMnO4 2mg.L-1 (T3). Para os banhos, com NaCl 3% por 10 minutos (T4); Formol 250 mg.L-1 por 1 hora (T5) e KMnO4 10 mg.L-1 durante 10 minutos (T6). O período do experimento foi de sete dias. O tratamento T2 apresentou melhor resultado reduzindo-se 50% a infesta o com 80% de sobrevivência dos alevinos registrando uma diferen a significativa (p < 0,05), em rela o aos outros tratamentos. Para alevinos de Steindachneridion sp o formol 25 mg.L-1 inoculados na água por sete dias apresentou melhor resultado no controle de I. multifiliis.
Development of the Igua u′s Surubim (Steindachneridion sp., Garavello (1991)) (Siluroidei:Pimelodiae) in darkness during the initial phase, fed with different diets/ Desenvolvimento do Surubim do Igua u (Steindachneridion sp., Garavello (1991)) (Siluroidei:Pimelodiae) em ambiente escuro durante a fase inicial, alimentado com diferentes dietas
Aldi Feiden,Carmino Hayashi,Wilson R. Boscolo,Altevir Signor
Semina : Ciências Agrárias , 2005,
Abstract: The experiment verified the development of Igua u′s surubim (Steindachneridion sp.) larvae, submitted to different diets in darkness. 35L-aquariums were used, in a completely randomized design, with five treatments and four repetitions. Each aquarium had 15 larvae with 8,35±0,85 mm and 6,75±0,64 mg, and the treatments were the following diets: Artemia(A); ration(R); zooplankton(Z); Artemia+ration(A+R); and zooplankton+ration (Z+R); After 29 days, the treatments A+R and Z+R was 1036 mg and 859 mg, respectively, significantly higher (P < 0,01), that A and Z, with 536 and 270 mg, respectively. In the treatment R there was no larvae survival, and presented high cannibalism (71%), which was also observed in other treatments, in smaller rates. This results led to the conclusions that the association of live and artificial diets in darkness provided best development, but it does not reduce the cannibalism. O experimento verificou o desenvolvimento de larvas de surubim do Igua u (Steindachneridion sp), submetidas a diferentes dietas em ambiente n o iluminado. Foram utilizados aquários de 35 litros, em um delineamento inteiramente casualizado, com cinco tratamentos e quatro repeti es. Colocaram-se 15 larvas por aquário, com 8,35±0,85 mm e 6,75±0,64 mg. Os tratamentos foram as dietas: Artemia(A); ra o(R); zooplancton(Z); Artemia+ra o(A+R); e zooplancton+ra o (Z+R). Após 29 dias, os resultados mostraram que os tratamentos A+R e Z+R obtiveram pesos médios finais de 1036 e 859 mg, significativamente maiores (p < 0,01), que A e Z, com 536 e 270 mg, respectivamente. No tratamento R n o houve sobrevivência de larvas, e apresentou alta taxa de canibalismo (71%), o qual foi também observado nos outros tratamentos, em menores taxas. Pode-se concluir que a associa o de alimentos vivos e dietas artificiais em ambientes escuros apresenta bom desenvolvimento mas n o reduz o canibalismo.
Performance and Muscular Development of Nile Tilapia Larvae (Oreochromis niloticus) Fed Increasing Concentrations of Phenylalanine  [PDF]
Diogo Yamashiro, Dacley Hertes Neu, Evandro Bilha Moro, Evandro Bilha Moro, Aldi Feiden, Altevir Signor, Wilson Rogério Boscolo, Fábio Bittencourt
Agricultural Sciences (AS) , 2016, DOI: 10.4236/as.2016.712081
Abstract: Even though tilapia is of great economic interest, data on the nutritional requirements of amino acids during commercial breeding stages are scarce. So, the aim of this study was to analyse the performance and muscular growth of Nile tilapia larvae (Oreochromis niloticus) fed diets containing increasing concentrations of phenylalanine. The experiment took place at the Laboratory of Aquaculture of the Grupo de Estudos de Manejo na Aquicultura (GEMAq) of the Universidade Estadual do Oeste do Paraná (Unioeste), Toledo, PR, Brazil, for 30 days. A total of 450 larvae, with mean initial length of 1.5 ± 0.14 cm and mean initial weight of 0.04 ± 0.004 g, were randomly distributed into 6 treatment groups with 5 repetitions (30 tanks). Each experimental unit consisted of a 30 L tank containing 15 larvae. Six diets were formulated with increasing concentrations of phenylalanine (1.09, 1.24, 1.39, 1.54, 1.69 and 1.84%) and offered four times a day until apparent satiation. By the end of the experimental period, the following productivity indexes were analysed: length, weight, survival, weight gain, uniformity, feed conversion, specific growth rate and protein efficiency ratio. Three fish from each tank were collected for muscular growth analysis and the frequency of small (<20 μm in diameter) and large (20 - 50 μm) muscle fibres recorded. Small fibres corresponded to 60% - 90% of the fibres observed, suggesting that muscular growth at this stage occurred mainly by hyperplasia. No significant difference (P > 0.05) was observed in the productive performance parameters between the treatment groups. Thus, it can be concluded that the levels of phenylalanine contained in the experimental diets did not influence the performance of Nile tilapia larvae. However, there was more hyperplasia when we put 1.39% of phenylalanine in the diet.
Exigência de proteína de alevinos de piavu?ú
Feiden, Aldi;Signor, Arcangelo Augusto;Boscolo, Wilson Rogério;Signor, Altevir;Reidel, Adilson;
Ciência Rural , 2009, DOI: 10.1590/S0103-84782008005000102
Abstract: the piavu?u leporinus macrocephalus presents omnivore feeding habits, eating vegetables and seeds. the protein feed presents higher cost compared to energetic feed. therefore, the higher protein content is in the ration, the higher might be the production cost of the fish. this study aimed to evaluate the gross protein need in the diet of piavu?u fingerlings (l. macrocephalus). 125 fingerlings (0.625±0.011g) were distributed into 25 aquariums with a 30l capacity at a random design, with five treatments and five repetitions. the diets were formulated to contain 22; 26; 30; 34 and 38% of gross protein and 3200kcal dee kg.-1 the fish were fed four times a day (8:00am; 11:00am; 2:00pm; and 5:00pm). the water quality parameters during the experimental period remained in the normal conditions for good animal development. the best results of the final weight, gain weight and apparent feeding conversion were observed for fishes which were fed with diets containing 34 and 38% of gross protein, having differences (p<0.05) on the treatments with 22, 26 and 30 of pb. also there was no variation in the protein deposition and protein efficiency rate in the animals' carcass. it is recommended to use 34% of protein gross on the diets of piavu?u fingerlings.
Farinha de carne e ossos na alimenta??o de larvas de tilápia do Nilo
Signor, Arcangelo Augusto;Signor, Altevir;Boscolo, Wilson Rogério;Feiden, Aldi;
Ciência Rural , 2010, DOI: 10.1590/S0103-84782010005000059
Abstract: the present study evaluated the inclusion of meat and bone meal (fco) in nile tilapia larvae feeding. the diet was formulated to be isoproteic (38.6% dp) and isocaloric (3500kcal de kg-1) with different fco levels at 0; 5; 10 and 15%. a 30-day trial was carried out in a complete randomized design with 360 nile tilapia larvae (6.59 ± 0.02mg and 0.90 ± 0.08cm) distributed in 24 50l-aquaria and fed until satiation five times a day at 8h00, 10h30, 13h00, 15h30 and 18h00. at the end of the experiment the average final weight (pf), final length (cf), standard length (cp) and survival (%) (so) were evaluated and the data was submitted to a regression analyses. the inclusion level of up to 15% of fco in the diet did not influence larvae weight gain. however, the higher cp was observed in larvae fed with the highest level of fco inclusion in diet. therefore, it can be used a total of up to 15% of fco inclusion in nile tilapia larvae feeding ration.
Composi??o química e digestibilidade aparente da energia e nutrientes da farinha de resíduos da indústria de filetagem de tilápias, para a tilápia do Nilo (Oreochromis niloticus)
Boscolo, Wilson Rogério;Hayashi, Carmino;Feiden, Aldi;Meurer, Fabio;Signor, Arcangelo Augusto;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008005000022
Abstract: coefficients of apparent digestibility (cd) of dry matter (dm), crude protein (cp), crude energy (ce) and the availability of amino-acids (aa), phosphorus (p) and calcium (ca) of meals from tilapia filleting industrial waste (ft) for the nile tilapia were determined. sixty tilapias, mean weight and length 80.69±15.97g and 15.97±1.87cm respectively, underwent feces collection by sedimentation in cone-bottom tanks. dm, cp and be of ft had a cd of 83.55; 88.13 and 84.74% respectively, with digestible protein and energy rates equivalent to 44.39% and 3799.02 kcal of ed kg-1. ft had average cd of aa of 91.60%, with cd varying from 67.90% for fen up to 100% for arg and cis. whereas cd of p was 70.44% with 1.94% of available p, cd of ca of ft amounts to 51.10% with 4.02% of ca available. ft is a protein feed with a good index of apparent availability of its nutrients and may be used in feed of tilapia. above indexes will produce low cost feeds that also meet the requirements of the fish.
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