Consulta: subjectFacets:"Stocking density"
Registros recuperados: 22
Data/hora: 13/06/2024 03:36:09

Pecuária de corte no Brasil Central: o produtor, os recursos produtivos e o manejo das pastagens.
Provedor de dados: 14
Autores: COSTA, F. P.
Problemas técnicos relacionados ao manejo das pastagens vêm sendo estudados com grande frequencia e profundidade. Pouco esforço, porém, tem sido dirigido para entender as ações e motivações dos produtores, relacionadas a tal manejo. O presente trabalho e um estudo exploratório neste sentido, apresentando o resultado de um levantamento realizado em uma amostra de 100 pecuaristas de corte da microrregião homogênea Pastoril de Campo Grande, no Estado de Mato Grosso do Sul. As entrevistas tiveram como base um questionário englobando os seguintes tópicos: características gerais dos produtores e suas preferências na aplicação dos recursos financeiros; disponibilidade e uso dos recursos produtivos, incluindo pastagens e alimentação suplementar, bovino, máquinas,...
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Bovino de corte; Taxa de lactação; Super-pastejo; Campo Grande; Mato Grosso do Sul; Brasil; Stocking density; Management; Agricultural workers; Feeding; Brazilian savannas.; Alimentação; Cerrado; Deterioração; Manejo; Maquina; Mão-de-Obra; Pecuarista.; Pastagem; Brazil; Farmers; Equipment; Deterioration; Beef cattle; Overgrazing; Pastures.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/323700

Transcriptomic response to parasite infection in Nile tilapia (Oreochromis niloticus) depends on rearing density
Provedor de dados: 5
Autores: Ellison, Amy R.; Uren Webster, Tamsyn M.; Rey, Olivier; Garcia De Leaniz, Carlos; Consuegra, Sofia; Orozco-terwengel, Pablo; Cable, Jo.
Background: Captive animal populations, be it for food production or conservation programmes, are often maintained at densities far beyond those in natural environments, which can have profound effects on behaviour, immune and stress levels, and ultimately welfare. How such alterations impact transcriptional responses to pathogen infection is a 'different kettle of fish' and remains poorly understood. Here, we assessed survival and gene expression profiles of infected fish reared at two different densities to elucidate potential functional genomic mechanisms for density-related differences in disease susceptibility. Results: Utilising a whole-transcriptome sequencing (RNAseq) approach, we demonstrate that rearing density in tilapia (Oreochromis niloticus)...
Tipo: Text
Palavras-chave: Stocking density; Stress; Saprolegnia; Aquaculture; Transcriptome; Tilapia; Circadian rhythm; Disease risk.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00462/57353/78952.pdf

Effects of temperature, stocking density and farming conditions on fin damage in European sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Person, Jeannine; Le Bayon, Nicolas.
This paper presents a non invasive, rapid and reliable way to quantitatively assess fin erosion in sea bass (Dicentrarchus labrax). The method is based on a visual assessment of fin profile and area loss of all fins except the anterior dorsal, on a scale from 0 to 4 in comparison with a perfect fin. The effects of stocking density (SD) and temperature on fin damage were investigated under experimental conditions (100-250 g fish). Over a 4-month period, mean erosion index (mean erosion level of all fins) was 10 times higher at 120 than at 20 kg m(-3), where most fins were undamaged. Damage was also dependent on time and oxygen concentration (35% lower at 53% O-2 saturation than at 105%). Fin condition was also affected by temperature: mean erosion index was...
Tipo: Text
Palavras-chave: Rearing systems; Stocking density; Temperature; Welfare; Fin damage; Sea bass.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6873.pdf

La mytiliculture dans la Manche. Biomasses en élevage et croissance de Mytilus edulis L.
Provedor de dados: 5
Autores: Goulletquer, Philippe; Joly, Jean-pierre; Le Gagneur, Eric; Ruelle, Francois.
This report describes the mussel Mytilus edulis sampling stock strategy developed to carry out stock assesments along the French Normandy coastline between 1989 and 1993. The overall totalnetweight reached 13,992 metric tons in 1993 with 27% precision level. Simultaneously, a growth study was carried out on 36 experimental sites to estimate overall variability. Individual total weight varied from 6.6 to 12 g at rearing cycle completion. An empirical management model conceming the Western Cotentin rearing areas was proposed and explained 68% of total weight variance. Based on a stepwise multilinear relationship, the model linked overall growth performance to local stocking density, tidal distribution, and distance from the main runoffs inputs. It aims to...
Tipo: Text
Palavras-chave: Mytilus edulis; Manche; Stock; Croissance; Mytilus edulis; Manche; Stocking density; Growth.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00072/18360/15932.pdf

Comparative growth and welfare in rainbow trout reared in recirculating and flow through rearing systems
Provedor de dados: 5
Autores: Roque D'Orbcastel, Emmanuelle; Person, Jeannine; Le Bayon, Nicolas; Blancheton, Jean-paul.
The objective of this study was to compare fish performance and welfare at different stocking densities in a recirculating system (RS) and a flow through system (FTS) under field conditions. During the 77 days experiment, the fish survival rate was high (99.3%) and stocking density increased from 57 to 98108 kg m(-3). No significant differences in growth were observed between RS and FTS until day 56. Later, growth decreased in the FTS, while it remained similar to the farm reference at 50 kg m(-3) in the RS. Final weight was 17% higher in RS than in FTS. The maximum carrying capacity of the RS was near 100 kg m(-3), limited by NO2 increase up to safe level at the end of the experiment, the maximum carrying capacity of the FTS was near 85 kg m(-3), probably...
Tipo: Text
Palavras-chave: Welfare; Fin; Performance; Stocking density; Recirculating system.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6509.pdf

Shrimp aquaculture in New Caledonia
Provedor de dados: 5
Autores: Galinie, C.
In New Caledonia, there is no indigenous shrimp species for commercial aquaculture and it is necessary to control the complete cycle in captivity. Since 1973 and the creation of the Station d'Aquaculture de Saint-Vincent (S.A.S.V.), a joint project between IFREMER, France-Aquaculture and the territory of New Caledonia, nine species have been tested and for one of these, P. stylirostris , (introduced in 1980), we are now in a commercial scale production with the tenth generation obtained in captivity.
Tipo: Text
Palavras-chave: New Caledonia; Penaeus stylirostris; Rearing; Stocking density; Larvae; Growth; Pellet feeds; Intensive culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1496.pdf

Combined effects of water quality and stocking density on welfare and growth of rainbow trout (Oncorhynchus mykiss)
Provedor de dados: 5
Autores: Person, Jeannine; Labbe, Laurent; Le Bayon, Nicolas; Severe, Armelle; Le Roux, Annick; Le Delliou, Herve; Quemener, Loic.
An 84-day experiment assessed the combined effects of two fresh water quality levels (H: 1.71 +/- 0.15 mg O(2)l(-1) and 0.28 +/- 0.01 mg l(-1) total ammonia nitrogen (T-AN), L: 5.15 +/- 0.07 mg O2l(-1) and 0.54 +/- 0.01 mg T- AN l(-1)) and 3 stabilized stocking densities: 24.8 +/- 0.2, 74.2 +/- 0.5 and 120.0 +/- 0.9 kg m(-3)) on rainbow trout. Fish were fed using demand feeders with rewards proportional to stocking density. Mass increase was significantly affected by water quality and stocking density, being highest in H water and the lowest at 120 kg m(-3). There was no significant difference in final weight between 25 and 74 kg m(-3), but at 120 kg m(-3) it was 27% and 19% lower in H and L water respectively than at 25 kg m(-3). Feed intake (FI) from day...
Tipo: Text
Palavras-chave: Growth; Welfare; Stocking density; Water quality; Rainbow trout.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4555.pdf

Review of grow-out techniques under tropical conditions: Experience of Thailand on seabass (Lates calcarifer ) and grouper (Epinephelus malabaricus)
Provedor de dados: 5
Autores: Tookwinas, S.
Seabass and grouper have been reared in cages in coastal waters in Thailand for 10 years. The fingerlings are nursed for a month in nylon nursing cages. Then, the juvenile fish are reared in culture cages which can be stationary or floating. The cage is usually 5 x 5 x 2 metres. The stocking density is around 500 to 2000 fish per cage. The survival rate is approximately 80%. The selling price at the culture site is 80 baht and 250 baht per kg for sea bass and grouper respectively. The culture method and economics of culture are explained.
Tipo: Text
Palavras-chave: Marketing; Diseases; Dissolved oxygen; Stocking density; Physicochemical properties; Water quality; Feeding; Feed; Survival; Juveniles; Nursery ponds; Floating cages; Rearing; Fish culture; Fingerlings; Growth.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1423.pdf

Grow-out mariculture techniques in tropical waters: A case study of problems and solutions in Hong Kong.
Provedor de dados: 5
Autores: Wu, R; Lee, J.
Raft culture is practised and trash fish is being used as feed in Hong Kong. Culture space is limited and most of the culture sites are over-crowded. Food conversion ratio is poor (about 10-15), grow-out mortality is high (30-50%) and fish kills caused by oxygen depletions, algal blooms and red tides occur frequently. Disease and water pollution are also problems.
Tipo: Text
Palavras-chave: Sparidae; Pisces; Indicator species; Diseases; Water pollution; Cage culture; Artificial feeding; Food fish; Oxygen depletion; Mortality; Growth; Stocking density; Fish culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1427.pdf

Intensive larval rearing trials of red drum (Sciaenops ocellata ) in Martinique (F.W.I.).
Provedor de dados: 5
Autores: Soletchnik, Patrick; Thouard, Emmanuel; Goyard, Emmanuel.
The red drum Sciaenops ocellata (Linneaus, 1766) was introduced in Martinique (F.W.I.) from the United States (Texas and Florida). Thirteen intensive larval rearing attempts, from 7 batches of imported eggs, have been conducted for two years.
Tipo: Text
Palavras-chave: Pisces; Growth; Larval development; Rearing; Hatching; Nutrition; Stocking density; Food conversion; Growth rate; Survival; Fingerlings; Fish; Eggs.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1434.pdf

Grossissement des juveniles de palourdes "Ruditapes decussatus" (l., 1758), sur l’estran de Zarat (golfe de Gabès, Tunisie), dans des conditions expérimentales.
Provedor de dados: 20
Autores: Zouari, M.; Hitonori, N.; Lymayem, Y.; M'Rabet, R.; Dhraief, M.N.; Missaoui, H.; Guergej, H.; Kraiem, M.M.
Le potentiel de grossissement de la palourde Ruditapes decussatus (L. 1758), élevée dans des poches de filet de 1 m2 de surface, a été évalué sur l’estran de Zarat (golfe de Gabès) pour la période de juillet 2006 à novembre 2007. Dans une première expérience, trois niveaux de la marée, représentant des chenaux de drainage de l’eau, existants entre la ligne de marée haute et celle de marée basse, ont été comparés sur une durée de 16 mois. Chacun des niveaux a été représenté par un triplicata de sacs de 150 individus. Dans une seconde expérience, trois densités de mise en charge différentes ont été comparées sur une durée de 17 mois. Pour cela, deux sacs de 100 individus chacun et deux autres de 200 individus chacun ont été alignés à l’expérience précédente,...
Tipo: Journal Contribution
Palavras-chave: Clam culture; Comparative studies; Environmental conditions; Estuaries; Experimental culture; Growth; Growth rate; Marine aquaculture; Marine molluscs; Population density; Rearing; Stocking density; Clams.
Ano: 2009
URL: http://hdl.handle.net/1834/4495

Evaluación de diferentes relaciones de proteína animal y vegetal en la dieta de juveniles de camarón blanco Litopenaeus schmitti.
Provedor de dados: 20
Autores: Galindo López, J.; Fraga Castro, I.; Forrellat Barrios, A.; Pelegrín Morales, E.; Cruz Quintana, Y.; Álvarez Capote, J.S.; Rojas Maset, G.
With the objective to determining the effect of different animal and plant protein ratios in white shrimp juvenile Litopenaeus schmitti diet, a totally randomized design was carried out at laboratory scale during 66 days. Five isonitrogenous and isocaloric practical diets were tested, with animal protein:plant protein ratios of 1:0, 2:1, 1:1, 1:2 and 1:1. Shrimps fed with food that contains only plant protein reached the smaller growth (p &lt; 0,05). The histological analysis has shown degeneration and hypertrophy of the hepatopancreas when animal and plant protein ratio was 1:
Tipo: Journal Contribution
Palavras-chave: Stocking density; Stocking density; Http://aims.fao.org/aos/agrovoc/c_24410.
Ano: 2009
URL: http://hdl.handle.net/1834/3447

Optimal Stocking Density for Dual-Purpose Winter Wheat Production
Provedor de dados: 31
Autores: Kaitibie,   Simeon; Epplin,   Francis M.; Brorsen,   B. Wade; Horn,   Gerald W.; Krenzer,   Eugene G., Jr.; Paisley,   Steven I.
Dual-purpose winter wheat production is an important economic enterprise in the southern Great Plains of the United States.  Because of the complex interactions involved in producing wheat grain and beef gain from a single crop, stocking density is an important decision.  The objective of the research is to determine the stocking density that maximizes expected net returns from dual-purpose winter wheat production.  Statistical tests rejected a conventional linear-response plateau function in favor of a linear-response stochastic plateau function. The optimal stocking density of 1.48 steers/ha (0.60 steers/acre) is 19% greater with a stochastic than with a nonstochastic plateau.
Tipo: Journal Article
Palavras-chave: Dual purpose; Response function; Stochastic plateau; Stocking density; Wheat; R32; Q12; C29; D21.
Ano: 2003
URL: http://purl.umn.edu/37313

Evaluation of strain, dietary energy level and stocking density on broiler feathering
Provedor de dados: 89
Autores: Moreira,J; Mendes,AA; Garcia,RG; Garcia,EA; Roça,RO; Nääs,IA; Dalanezi,JA; Pelícia,K.
This study evaluated the effects of strain, stocking density and dietary energy level on the feathering of broiler chickens. Four trials were carried out between September 2000 and April 2002. There were 10,685 broiler chicks from the strains Ross 308, Cobb 500, Hybro PG, Hubbard, MPK, and Isa Vedette. The bids were reared at stocking densities varying between 10 and 16 birds/m² and were given diets containing different metabolizable energy levels. Broiler feathering was evaluated either by atrributing scores from 1 to 10 to feather covering along the thigh and back (visual inspection), or by determining the percentage weight of the feathers at 28 and 42 days of age. Increasing rearing densities resulted in poorer feathering, mainly if 12 or 13 birds/m²...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Dietary energy; Feathering; Strain; Stocking density.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100002

Effect of Stocking Density on the Performance and Immunity of 1- to 14-d- Old Broiler Chicks
Provedor de dados: 89
Autores: Qaid,M; Albatshan,H; Shafey,T; Hussein,E; Abudabos,AM.
ABSTRACT The current experiment was conducted to evaluate the effect of stocking density (SD) on the performance and immunity of 1- to 14-d-old broilers. A total of 1836 one-day-old Cobb 500 broilers were housed at four different SD (30, 60, 90 and 120 chicks/m2). Body weight gain (BWG), feed intake (FI) and feed conversion ratio (FCR) were estimated on d 2, 5, 8, 11 and 14. Relative lymphoid organ weights, maternal antibody titers against IBV, IBD and NDV, and stress indicators were estimated on d 3, 6, 9 and 12.The results indicated that age significantly (p&lt;0.001) affected the performance and immunity of broiler chicks. Stocking density significantly (p&lt;0.001) affected the performance and physiological stress indicators of broiler chicks, but not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Immune response; Stocking density.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400683

Tarragon (Artemisia Dracunculus L.) Could Alleviate Negative Effects of Stocking Density in Laying Hens
Provedor de dados: 89
Autores: Kaya,H; Karaalp,M; Kaynar,Ö; Tekçe,E; Aksakal,A; Bayram,B.
ABSTRACT The study was conducted to determine the effects of stocking density (SD, 5 or 7 layers/cage) and tarragon (Artemisia dracunculus L.) diet supplementation at four levels (0, 1.2, 6 and 12 g/kg feed) on performance, certain egg characteristics, serum, liver, egg yolk and small intestine bacteria parameters in laying hens. The experiment was carried out over a period of 8 weeks, with 192 Lohman Brown commercial hybrids at 50-w-age. The results showed that an increased SD reduced feed intake (FI; p&lt;0.01) and egg production (p&lt;0.05), but had no effect on the weight gain, feed conversion ratio, damaged egg ratio, egg weight and egg quality (p&gt;0.05) parameters. The supplementation of tarragon to the diet reduced the FI and damaged egg ratio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Bacteria; IgG; Stocking density; Tarragon.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100301

Effects of stocking density and artificial substrates on yield and water quality in a biofloc shrimp nursery culture
Provedor de dados: 96
Autores: Legarda,Esmeralda Chamorro; Barcelos,Suhellen Santos; Redig,Joselle Cursino; Ramírez,Norha Constanza Bolívar; Guimarães,Ariane Martins; Santo,Carlos Manoel do Espírito; Seiffert,Walter Quadros; Vieira,Felipe do Nascimento.
ABSTRACT The objective of this study was to evaluate the effect of different stocking densities and the presence/absence of two artificial substrates on water quality and production rates of marine shrimp in a biofloc shrimp nursery culture. Two experiments were performed: different stocking densities with mosquito netting substrate and the presence/absence of polyester-type substrate. The first experiment lasted 38 days, and shrimp at an initial weight of 0.013±0.010 g were stocked in 24 tanks. The second experiment lasted 35 days, and shrimp at an initial weight of 0.037±0.002 g were stocked in six tanks. Weekly biometric measurements were performed to adjust the amount of feed. Suspended solids were higher at a density of 6000 PL m−3 and mosquito...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial substrates; Biofloc technology; Litopenaeus vannamei; Stocking density; Yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100104

Desempenho comparativo de três linhagens de tilápia do Nilo Oreochromis niloticus em diferentes densidades de estocagem - DOI: 10.4025/actascianimsci.v31i2.464
Provedor de dados: 2
Autores: Fülber, Vanice Marli; UEM -Maringá; Mendez, Lauro Daniel Vargas; UEM - Maringá; Braccini, Graciela Lucca; UEM - Maringá; Barrero, Nelson Mauricio Lopera; Digmeyer, Melanye; Ribeiro, Ricardo Pereira; UEM - Maringá.
O presente trabalho objetivou avaliar o desempenho produtivo de três linhagens de tilápia do Nilo (O. niloticus) na fase inicial e de crescimento, em diferentes densidades de estocagem. As linhagens estudadas foram Bouaké, Chitralada e GIFT. Foram utilizadas caixas d’água de 500 L, testando-se nove tratamentos e três repetições. Os parâmetros físicos e químicos da água mantiveram condições normais de cultivo para a espécie nas duas fases. Na fase inicial, ao se comparar entre as densidades dentro da mesma linhagem, não foram identificadas diferenças na Chitralada. Entretanto, as linhagens Bouaké e GIFT refletiram sensibilidade ao aumento das densidades de estocagem. Na fase de crescimento, os resultados obtidos para os parâmetros de desempenho médio final...
Palavras-chave: Production performance; Stocking density; GIFT; Oreochromis niloticus; Nile tilapia desempenho produtivo; Densidade de estocagem; GIFT; Oreochromis niloticus; Tilápia do Nilo.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/464

Assessment of the suitability of pineapple waste as feedstock for vermicomposting
Provedor de dados: 111
Autores: Miito, Gilbert John; Komakech, Allan John; Zziwa, Ahamada; Kiggundu, Nicholas; Kambugu, Robert.
Declining soil fertility is a challenge to sustainable agricultural production in sub-Saharan Africa with a case of Uganda. However, the large volumes of agricultural waste generated from pineapples can be converted into soil conditioners through vermicomposting. by the use of earthworms. Several types of agricultural waste have been studied extensively as vermicompost feedstock, but little work exists on pineapple waste. The objective of this study was to investigate the suitability of pineapple waste for vermicomposting. To achieve this, an assessment of the physicochemical properties of fresh, pre-composted pineapple waste, and the resultant vermicompost, and determination of the optimal feeding rate and stocking density were performed.  The study...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pineapple waste; Vermicompost; Soil conditioner; Stocking density; Feeding rate.
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6739

Influences of stocking density and dietary probiotic supplementation on growing Japanese quail performance
Provedor de dados: 42
Autores: MAHROSE,KHALID M.; ELHACK,MOHAMED E. ABD; MAHGOUB,SAMIR A.; ATTIA,FATEN A. M.
Abstract: This study investigated the effects of stocking density and dietary supplementation of probiotic (Lactobacillus) on growth, traits of carcass, lymphoid organs and intestinal microbial count of Japanese quail. Quail chicks (one week old) were randomly allotted to 6 groups in a 2×3 factorial experiment included 2 levels of stocking density (100, and 75 cm2/bird) and 3 levels of probiotic (0.00, 0.02 and 0.04 g/kg diet). Quail reared at 100 cm2/ bird showed significantly the highest body weight and daily gain. Quail reared at 75 cm2/ bird had significantly the lower average of feed consumption and the best ratio of feed conversion. Increasing level of probiotic up to 0.04 g/kg led to a significant decrease in dressing percentage by about 2.7 %...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stocking density; Probiotic; Growth; Immunology; Microbial count; Quail.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300603

Influences of dietary crude protein and stocking density on growth performance and body measurements of ostrich chicks
Provedor de dados: 42
Autores: MAHROSE,KHALID M.; EL-HACK,MOHAMED E. ABD; AMER,SHYMAA A.
Abstract: Thirty-six African Black ostrich chicks were used to investigate the effects of dietary crude protein (CP) levels (180, 210 and 240 g/kg), stocking density (4.5 and 3 m2/bird) and their interactions. A factorial arrangement was used to examine the impact of treatments on growth performance and body measurements of ostrich chicks during 2 to 10 weeks of the age. Results indicated that factors studied did not change growth performance traits. The highest value of protein efficiency ratio was observed in ostrich chicks fed diet contained 240 g/kg diet. Birds fed diet contained 240 g CP /kg diet and kept at stocking density of 3 m2 per bird had numerically the highest protein efficiency ratio. Shank girth and tibiotarsus length decreased with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude Protein; Stocking density; Growth; Body measurements; Ostrich.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100630

Effects of chromium supplementation on the infrapopulations of Anacanthorus penilabiatus (Monogenoidea) and Piscinoodinium pillulare (Dinoflagellida) parasites of Piaractus mesopotamicus (Characidae)
Provedor de dados: 52
Autores: Fujimoto,Rodrigo Yudi; Castro,Marcello Pardi de; Martins,Maurício Laterça; Moraes,Flávio Ruas de; Varella,Jamille Elzira de Almeida; Diniz,Daniel Guerreiro.
This study evaluated the parasitism by Anacanthorus penilabiatus (Monogenoidea) and Piscinoodinium pillulare (Dinoflagellida) in the gills of "pacu", Piaractus mesopotamicus supplemented with chromium in the diet. Randomised delineation by using factorial scheme (4x2x2) for Monogenoidea and 4x2x3 for Dinoflagellate with four levels of chromium (0, 6, 12, 18mg/kg diet), two stocking densities (4kg/m³ and 20kg/m ³), two classes of length (higher and lower than 17 cm) for a period of 7, 60 and 90 days, and four replicates was used. The fishes in low density which received 12 and 18mg/kg showed decreased monogeneoidea values, seven days after the experiment begin. Six, 12 and 18 mg/kg caused reduction in the dinoflagellate number in the fishes maintained at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piaractus mesopotamicus; Chromium; Stocking density; Piscinoodinium pillulare; Anacanthorus penilabiatus.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400011