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Registros recuperados: 46
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Técnicas de manejo reprodutivo em bovinos de corte. Infoteca-e
VALLE, E. R. do; ANDREOTTI, R.; THIAGO, L. R. L. de S..
Na pecuária de corte, a exploração comercial do sistema de cria se constitui na fase do sistema produtivo, que envolve a criação e o manejo não só das matrizes bovinas e seus respectivos bezerros ate a desmama, mas também das novilhas de reposição e dos touros. Esse sistema tem por objetivo a produção de bezerros desmamados que representa a maior fonte de receita do criador. A venda de vacas descartadas e outros animais, apesar de contribuírem para a produção total, e uma fonte de receita marginal, mas também muito importante para o criador. Portanto, a viabilidade do sistema vai depender da eficácia e eficiência com que são utilizados os meios disponíveis para a otimização da produtividade. O escopo deste trabalho foi o de apresentar e discutir as...
Tipo: Documentos (INFOTECA-E) Palavras-chave: Bovino de corte; Estação de monta; Sanidade; Breeding seasouns; Nutritional requirements; Management.; Acasalamento; Eficiência Reprodutiva; Exigência Nutricional; Prenhez; Reprodução; Desmama.; Animal health; Copulation; Beef cattle; Reproduction; Pregnancy; Reproductive performance; Weaning..
Ano: 2000 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/325118
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Microparticulate feeds for Penaeid larvae ArchiMer
Kanazawa, A.
The mass production of penaeid larvae still depends on live foods such as diatoms, Chlorella and Artemia . However, it requires much facilities, maintenance expenses, and labor to produce a desired amount of life foods safely and constantly. Also, the nutritive value of planktonic organisms is occasionally variable and this makes the use of live food for mass culture restrictive. Therefore, it is necessary to develop microparticulate diets as a substitute for live foods to further increase the productivity of seed for shrimp culture.
Tipo: Text Palavras-chave: Penaeus japonicus; Nutritional requirements; Food organisms; Fish meal; Proteins; Nutritive value; Survival; Food; Diets; Feeding; Feed; Shrimp culture.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1463.pdf
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Vitamin requirements of juvenile penaeid shrimp ArchiMer
Conklin, D.
The results of supplementing crustacean feeds with vitamins are examined specifically from the standpoint of shrimp culture. Micro-nutrients selected for discussion include: water-soluble vitamins of the B-complex, choline and inositol, vitamin C and the fat-soluble group of vitamins: A, D, E and K. Ways in which utilization of vitamins and ultimately dietary demand are altered by physiological state, conditions of culture, as well as factors which impact on feed levels, are explored.
Tipo: Text Palavras-chave: Penaeidae; Malacostraca; Diets; Marine crustaceans; Nutrients (mineral); Nutritional requirements; Juveniles; Feed; Vitamins.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1469.pdf
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Two examples of nutritional pathology related to vitamins E and C deficiencies ArchiMer
Baudin Laurencin, F; Messager, J; Stephan, Gwendal.
Symptoms recalling a nutritional pathology and more precisely a process of lipid peroxydation were observed during the last years in seabass Dicentrarchus labrax and other fishes cultured in tropical marine condition, Ocyurus chrysurus and Lutjanus analis . They included dark coloration, skin ulceration, lethargy, anorexy, emaciation. Histological examinations showed hepatic fatty degenerative lesions, pancreatitis, muscular degeneration and retinal atrophy. Additional vitamins E and C in the food suppressed that pathological symptoms. The previously evoked clinical or histological signs were not achieved in spite of an increase of the level of hepatic, muscular or blood malondialdehyde and of the conjugated dienes of the perivisceral fat. In the same...
Tipo: Text Palavras-chave: Lutjanus analis; Ocyurus chrysurus; Dicentrarchus labrax; Pisces; Marine fish; Diseases; Nutrient deficiency; Vitamin C; Vitamin E; Vitamin deficiencies; Nutritional requirements; Dietary deficiencies; Deficiency diseases.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1501.pdf
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Marine finfish pathology: Specific problems and research in the French West Indies ArchiMer
Gallet Desaint Aurin, D; Raymond, J; Vianas, Viviane.
The finfish species reared in marine intensive conditions in the French Caribbean Islands are imported (European seabass, American red drum and Oreochromis hybrids) or local (Carangids and Lutjanids) species. The European seabass (Dicentrarchus labrax ) is susceptible, during its first year of life, to a contagious disease characterized by whirling and hyperexcitability, associated with severe lesions of the brain, viral particles being pointed out in the damaged nervous cells.
Tipo: Text Palavras-chave: Growth; Hatcheries; Nutrient deficiency; Nutritional requirements; Pathology; Parasitic diseases; Fish culture.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1478.pdf
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Production of live prey for marine fish larvae ArchiMer
Kraul, S.
Tropical marine fish larvae vary in their requirements for live planktonic food. Selection of live prey species for culture depends on larval size and larval tolerance of water quality. This report describes some of the cultured prey species, and their uses and limits as effective food for fish larvae. Methods are presented for the culture of phytoplankton, rotifers, copepods, and other live feeds.
Tipo: Text Palavras-chave: Brine shrimp culture; Diets; Prey selection; Food organisms; Feeding; Growth; Rearing; Nutritional requirements; Fish larvae; Marine fish; Tropical fish.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1443.pdf
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Energy-protein management by some warmwater finfishes. ArchiMer
Luguet, P; Moreau, Y.
If warmwater finfish protein requirements as level in diet is low, absolute intake per day is similar to those of coldwater species. But relation of this requirement with specific growth rate differs for strictly warmwater fishes as Tilapias. Analysis of partition between protein and non-protein energy retention shows that these species with Clarias make a better use of non-protein energy provided and consequently improve their protein retention. Better carbohydrate digestibility and metabolism are propounded as part of the explanation.
Tipo: Text Palavras-chave: Clarias; Oreochromis mossambicus; Oreochromis aureus; Oreochromis niloticus; Tilapia; Cichlidae; Pisces; Nutritional requirements; Digestibility; Diets; Proteins; Metabolism; Carbohydrates; Nutrition; Feeding; Growth rate.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1424.pdf
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Influence du taux de proteines sur la croissance ponderale de Palaemon serratus (Pennant) elevee au laboratoire ArchiMer
Campillo, Albert; Luquet, P..
The quantitiative requirements for protein have been determined in P. serratus reared from the post-larval stage to the 4th month. It appears that the apparent optimum percentage of protein in the diet is a minimum of 60%. At the 8th month, the mean wt of prawn reared with the best artificial diet (diet IV) is only 49% of the wt of shrimp reared with the digestive gland of Patella as a diet. The prawns reared to 4th month on a low-protein diet then reared on a natural diet until the 8th month, show important compensatory growth. However, the prawns do not achieve the wt of the control population, their average wt representing only 16% of the controls.
Tipo: Text Palavras-chave: Crangon crangon; Penaeus japonicus; Homarus vulgaris; Palaemon serratus; Nutritional requirements; Growth; Proteins; Artificial feeding; Crustacean culture; Laboratory culture; Rearing.
Ano: 1975 URL: http://archimer.ifremer.fr/doc/1975/publication-2029.pdf
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Review and current status of the aquaculture potential for the mahimahi, Coryphaena hippurus ArchiMer
Kraul, S.
The mahimahi, Coryphaena hippurus , has excellent potential for aquaculture due to its fast growth (2 kg at 6 months, 9 kg at 1 year), good food conversion efficiency (30%, wet weight), high fecundity with natural captive spawns (200,000 eggs/female/2 days year round for a 1 year old female), and high price (US$ 9.00/kg wholesale in Hawaii).
Tipo: Text Palavras-chave: Copepoda; Rotifera; Coryphaena hippurus; Coryphaenidae; Pisces; Artificial feeding; Diets; Spawning; Fingerlings; Females; Eggs; Food; Food conversion; Hatcheries; Nutritional requirements; Growth.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1473.pdf
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Mineral requirement of Penaeids ArchiMer
Piedad-pascual, F.
Marine shrimps absorb minerals from their aquatic environment aside from the minerals that come from the food they eat. Thus, the dietary requirement of shrimps for certain minerals will depend on the amounts and availability of these minerals in the aquatic environment. Dietary sources for growth may be necessary due to losses during moltings.
Tipo: Text Palavras-chave: Penaeus californiensis; Penaeus monodon; Penaeus japonicus; Penaeidae; Malacostraca; Juveniles; Moulting; Feed efficiency; Survival; Growth; Phosphorus; Calcium; Diets; Shrimp culture; Nutritional requirements.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1454.pdf
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Protein requirements of Penaeid shrimp. ArchiMer
Kanazawa, A.
Proteins are indispensable nutrients for growth and maintenance of live of all animals. The optimum protein levels in diets for shrimps are different among the various species. Squid meal is an effective protein source for many penaeids. The effects of dietary protein, lipid, and carbohydrate levels on the growth and survival of larvae of Penaeus japonicus were examined by feeding trials using purified diet with carrageenan as a binder. As a result, the effects of protein levels on growth and survival of P. japonicus larvae varied with dietary carbohydrate levels but not dietary lipid levels.
Tipo: Text Palavras-chave: Penaeus japonicus; Malacostraca; Marine crustaceans; Amino acids; Larvae; Survival; Carbohydrates; Diets; Nutritional requirements; Proteins; Growth.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1485.pdf
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Nutrition of the seabass Lates calcarifer ArchiMer
Cuzon, Gerard; Chou, R; Fuchs, Jacques.
The Primary Production Department of Singapore (PPD) studies covered the weaning of seabass from fingerlings stage onwards and the dietary protein requirement of early grow-out fish. Dietary protein requirement of early grow-out seabass was demonstrated to be between 40-50%, at dietary lipid level of 12%, using fishmeal protein. Nevertheless fish growth was significantly higher with trashfish feed, but apparent protein retention was significantly better with formulated feed.
Tipo: Text Palavras-chave: Lates calcarifer; Fry; Nutritional requirements; Biochemistry; Food absorption; Growth rate; Fish meal; Seed (aquaculture); Dietary deficiencies; Fingerlings; Lipids; Proteins; Diets; Pellet feeds.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1425.pdf
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Définition d'un modèle d'élevage larvaire intensif pour la daurade Sparus auratus ArchiMer
Ounais-guschemann, Nadia.
This study defines rearing parameters for mass products of 30-day old post larvae. Continuous lighting (600 lux) optimizes the predatory activity and suppresses the feeding rhythm. For 4-5 mm larvae (15 days), food ingestion slows down if the prey concentration in the tank is below 5 rotifers/ml, while there is no such threshold for 6-7 mm larvae (22 days). The rotifer Brachionus plicatilis , between 100 and 200 mu m, is an adequate initial prey, it can be replaced by Artemia salina for 7-8 mm larvae (30 days). It is observed that free amino acids and essential fatty acids contents have a prominent role in larvae growth; docosahexaenoic acid (C22:6n-3) content could be determined. Finally, the development of the swim bladder is facilitated by the renewal...
Tipo: Text Palavras-chave: Sparus auratus; Pisces; Marine fish; Environmental diseases; Fatty acids; Amino acids; Controlled conditions; Juveniles; Culture tanks; Growth; Light effects; Nutritional requirements; Fish larvae; Syndrome de paroi; Nutrition; Alimentation; Lumière; Inflation primaire de la vessie natatoire; Sparus auratus; Elevage larvaire intensif; Poisson.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/these-1679.pdf
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L'aquaculture des crevettes, role de la nutrition ArchiMer
Guillaume, Julien.
Shrimp and prawn aquaculture is developing fast and amounts presently to 8% of world consumption. It concerns mainly various species of penaeids and is done with different techniques where feeding plays a variable role. This role is discussed both in the case of more or less extensive farming and in the case of intensive farming. The lack of knowledge in the field of nutrition itself is emphasized as well as the importance of feed technology both for juvenile foods and larval microcapsules or microparticles.
Tipo: Text Palavras-chave: Penaeidae; Malacostraca; Artificial feeding; Nutritional requirements; Feeding; Animal nutrition.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/acte-1408.pdf
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Early weaning of marine fish larvae onto microdiets: Constraints and perspectives ArchiMer
Person, L.
Weaning small sized marine fish larvae at first feeding directly onto compound pellets is still difficult, while good results can be obtained when used in combination with live prey or when a prefeeding period on live prey is provided up to a size of about 2-3 mg. Microdiets are generally well ingested as their acceptability and visual detection may be improved using feeding activators and increasing good perception contrast. In theory, food may be processed to have a correct nutritional balance, selection of high digestible components is very important as larval digestive system is not fully functional during the first 2 or 3 weeks of life.
Tipo: Text Palavras-chave: Hatching; Fatty acids; Amino acids; Nutritional requirements; Feeding behaviour; Stomach; Digestive system; Enzymes; Digestion; Physiology; Diets; Pellet feeds; Feeding; Fish larvae.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1422.pdf
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Reference diet for crustaceans: Principle of experimentation. ArchiMer
Castell, J.
Feeding trials were conducted with over 22 different crustacean species to compare the potential use of two diets as Standard Reference Diets (SRD) in crustacean research. The two diets (BML 81 S, a casein/albumin based formula developed at the University of California, Bodega Marine Laboratory, and HFX CRD 84, a crab protein concentrate based diet formulated at the Canadian Department of Fisheries and Oceans Halifax Laboratory) were about equal in performance for most species tested. Though neither diet was an ideal SRD, the HFX CRD 84 formulation based upon a purified protein of marine origin was accepted as the interim SRD for use in aquatic crustacean studies.
Tipo: Text Palavras-chave: Astacus astacus; Penaeus orientalis; Homarus americanus; Crustacea; Rearing; Carbohydrates; Lipids; Proteins; Experimental research; Feeding experiments; Nutritional requirements; Diets.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1503.pdf
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Effects of nutritional requirement of live food organisms on growth and survival of barramundi/seabass Lates calcarifer (Bloch) larvae. ArchiMer
Rimmer, M; Reed, A.
Larvae of barramundi (Lates calcarifer ) reared intensively in some Australian hatcheries have suffered periodic high mortalities which have been ascribed to nutritional deficiencies in the live food organisms used, particularly deficiencies of polyunsaturated fatty acids. Barramundi larvae reared in an experimental system and fed on four diets, representing combinations of supplemented and unsupplemented rotifers (Brachionus plicatilis ) and supplemented and unsupplemented brine shrimp (Artemia salina ). Supplementation of rotifers and brine shrimp with a commercially available microencapsulated diet increased the levels of several polyunsaturated fatty acids in the food organisms.
Tipo: Text Palavras-chave: Lates calcarifer; Brine shrimp culture; Growth; Intensive culture; Fatty acids; Feeding; Mortality; Hatcheries; Rearing; Food organisms; Nutritional requirements; Diets; Larvae; Survival.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1421.pdf
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Evaluación de la harina de calamar en dietas para juveniles de Tortuga carey (Eretmochelys imbricata) OceanDocs
Pelegrín, E.; Alvarez, S.; Galindo, J.; Regueira, E..
Un diseño experimental completamente aleatorizado en condiciones controladas de laboratorio se desarrolló durante 89 días, con el objetivo de conocer el efecto sobre el crecimiento y otros parámetros nutricionales de la harina de calamar en dietas para tortuga carey Eretmochelys imbricata. Se emplearon juveniles de 28.7 ± 5.28 g de peso inicial promedio y 6.5 ± 0.43 cm de largo inicial promedio del caparazón. Se evaluaron cuatro dietas prácticas con 0, 5, 10 y 15% de harina de calamar. Los animales que se alimentaron con las dietas que contenían harina de calamar presentaron los mejores resultados en cuanto a ganancia en peso y largo final, difiriendo significativamente (P<0.05) con los que no consumieron este ingrediente. Los mejores valores del índice...
Tipo: Proceedings Paper Palavras-chave: Fish meal; Diets; Proteins; Juveniles; Turtle culture; Nutritional requirements; Turtle culture; Fish meal; Juveniles; Proteins; Nutritional requirements; Http://aims.fao.org/aos/agrovoc/c_8022; Http://aims.fao.org/aos/agrovoc/c_2925; Http://aims.fao.org/aos/agrovoc/c_25393; Http://aims.fao.org/aos/agrovoc/c_6259; Http://aims.fao.org/aos/agrovoc/c_5277.
Ano: 2006 URL: http://hdl.handle.net/1834/1885
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Valor del pepino de mar y perspectivas de desarrollar su cultivo en Cuba OceanDocs
Pelegrín Morales, E.; Alvarez Capote, J. S..
Los pepinos de mar u holoturias son animales que presentan un particular interés por su alto valor nutricional, medicinal, ecológico y comercial. Poseen un elevado contenido de proteína, minerales y polisacáridos indispensables para la nutrición humana. Son inhibidores de algunos tipos de cáncer y tienen bioactivos útiles en la elaboración de fármacos. Son recicladores de nutrientes, evitando la acumulación de materia orgánica en descomposición. En el mercado presentan una gran demanda, con precios de alrededor de 100.00 USD/Kg según la especie, razón por la que algunas de las poblaciones naturales están sobre explotadas. A nivel internacional se tiene conocimiento del cultivo de varias especies de pepino de mar. En Cuba, comenzó en 1999 la...
Tipo: Preprint Palavras-chave: Sea cucumber fisheries; Aquaculture; Nutritional requirements; Ecological sciences.
Ano: 2012 URL: http://hdl.handle.net/1834/4514
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Análisis espacio-temporal del estado nutricional de larvas de anchoíta Engraulis anchoita. Relación con las características hidrográficas y la disponibilidad de alimento OceanDocs
Díaz, M.V..
Nutritional condition studies allow the assessment of physiological state of each larva and thus, the establishment of favourable nursery areas which provide better survival and growth. In the present work, morphometrical, histological and biochemical techniques were employed to assess nutritional condition of anchovy, Engraulis anchoita, larvae captured in the Argentine Sea. Its results were complemented with oceanographic data and information about zooplankton abundances, both prey and predators of anchovy larvae. Anchovy larvae abundance and distribution would be mainly determined by physico-chemical variables. Even though no significant differences were found in larval nutritional condition among the studied areas, larval condition was slightly better...
Tipo: Theses and Dissertations Palavras-chave: Fish larvae; Nutritional requirements; Morphometry; Histology; Hydrography; Nursery grounds; Fish larvae; Nutritional requirements; Hydrography; Nursery grounds; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_5277; Http://aims.fao.org/aos/agrovoc/c_3727; Http://aims.fao.org/aos/agrovoc/c_25438.
Ano: 2010 URL: http://hdl.handle.net/1834/3548
Registros recuperados: 46
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