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| Registros recuperados: 89 | |
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| Nunes,Cleujosí da Silva; Moraes,Gilberto; Fabrizzi,Fernando; Hackbarth,Araceli; Arbeláez-Rojas,Gustavo Alberto. |
| The objective of this work was to evaluate the effect of sustained swimming and dietary protein levels on growth and hematological responses of juvenile pacu (Piaractus mesopotamicus). A completely randomized design was used in a 3x2 factorial arrangement, with three levels of dietary protein (24, 28, and 32% crude protein), two rearing conditions (sustained swimming or motionless water), and 15 replicates. Fish were subjected to sustained swimming at the velocity of two body lengths per second (2 BL s-1), for 45 days. The level of dietary protein and the swimming conditions affected the performance, growth, and hematological profile of pacu. Swimming conditions influenced nutritional factors, increasing daily weight gain, specific growth rate, number of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Piaractus mesopotamicus; Erythropoiesis; Exercise; Growth rate; Weight gain. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000600010 |
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| Stevens, David R.; Woodward, Simon J.R.; Westbrooke, Victoria F.C.. |
| This paper describes the development of a learning package to support improved pasture quality on New Zealand deer farms. The first step has been to determine the specific requirements of deer farmers that will enable them to improve pasture quality decisions on-farm. Decision support software that interprets and demonstrates the impacts of pasture quality and animal physiology on the performance of young growing deer has also been developed. Key themes identified to aid pasture management decision-making included identifying the right pasture quality, management systems to maintain pasture quality and maximising the potential of livestock. This paper reports on the type of knowledge that deer farmers require in the learning package. |
| Tipo: Article |
Palavras-chave: Decision making; Deer; Growth rate; Learning packages; Pasture quality; Software; Farm Management. |
| Ano: 2005 |
URL: http://purl.umn.edu/123143 |
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| Braga,Maria do Rosário de A.; Fujii,Mutue T.; Cordeiro-Marino,Marilza. |
| (Monostromatic green algae (Ulvales, Chlorophyta) of São Paulo and Paraná states (Brazil): distribution, growth, and reproduction). Culture studies were used for taxa identification and to understand aspects of the biology and physiology of monostromatic green blades growing in various sites along the coast of São Paulo state (23º30'-25ºl2'S, 45º10'-48ºW) and one site in Paraná state (25º35'S, 48º21'W), southeast and south Brazil, respectively. Possible variations of the growth rate, age of reproduction and life history were tested under different conditions of temperature, salinity and day length. Two species were found: Ulvaria oxysperma (Kützing) Bliding and Monostroma sp. The first one has been previously reported for many temperate and tropical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ulvaria; Monostroma; Growth rate; Reproduction. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000200010 |
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| Juodka,R; Nainiene,R; Juskiene,V; Juska,R; Stuoge,I; Leikus,R. |
| ABSTRACT A study was carried out to determine the effects of soybean meal replacement with different amounts of blue lupine in the diets of turkeys on the growth rate, anatomic carcass dissection data, chemical indicators of breast and thigh muscles and the content of tryptophan and oxyprolin. In total three hundred and sixty cross BIG-6 turkeys were allotted to two control and ten experimental groups of 30 one-day-old turkeys. The control group of turkeys was fed the diet containing soybean meal, whereas the trial groups were offered different amounts (from 20 to 30%) of lupines. Group 4 and 5 were additionally given probiotic mixture Bio Plus 2B and allzyme SSF, respectively. Soybean oil replacement from 20 to 30% lupine in the diet had no influence on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomic carcass dissection data; Chemical indicators; Growth rate; Lupine; Turkey. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500117 |
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| Henn,JD; Bockor,L; Ribeiro,AML; Coldebella,A; Kessler,A de M. |
| The objectives of the present study were to determine the parameters of Gompertz equations and to determine curves and growth rate, feed intake and body component deposition, as well as allometric coefficients of body water, protein, and fat relative to live weight of male and female broilers of intermediate performance (C44) and high performance (Cobb-500) genetic strains. In total, 384 one-d-old chicks were distributed into four treatments: male Cobb 500, male C44, female Cobb 500, and female C44, with six replicates of 16 birds, according to a completely randomized experimental design. Average body weight, weight gain, and feed intake were weekly determined, and six birds, representing the average weight of each treatment, were sacrificed to determine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body composition; Gompertz curve; Growth rate; Cobb 500; C44. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300014 |
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| Richardi,Vinicius S.; Rebechi,Débora; Aranha,José M. R.; Navarro-Silva,Mário A.. |
| Determining the age composition of a population is important when conducting ecological, taxonomic and environmental assessments. Morphometric measurements of the head capsule, especially the length and width, are widely used in the identification of insect instars, but alternative ways for determining the age of insects can expand the options for the analysis of field and laboratory populations. This study evaluated the morphometry of the antennae, mandibles, mentum and ventromental plates to discriminate among the four larval instars of Chironomus sancticaroli Strixino & Strixino, 1981. The larvae were reared in the laboratory under constant temperature (25°C) and photoperiod of 12/12 hours for 19 days, with a supply of food. Fifteen larvae were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth rate; Head capsule; Instars; Morphometry. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000200011 |
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| Lobo,Haroldo; Alves,Roberto da Gama. |
| The biology of Branchiura sowerbyi Beddard, 1892 has been the focus of many studies in temperate regions, where the species is exotic, according to literature data. Due to its high productivity and easy cultivation, B. sowerbyi is of great interest as a food source for fish farming. The present study reports information on the reproductive biology and growth of B. sowerbyi under laboratory conditions at 25 ± 1ºC. Weekly observations during 52 weeks indicated that the time between cocoon laying and young hatching was 14 to 16 days, the specific daily growth rate was 0.91 ± 0.04% (mean ± SD) and the time to reach sexual maturity was 40.83 ± 6.88 days. As reported by other authors, the hatching rate observed was low (33.08%), but the survival rate of young... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cocoons; Fish food; Growth rate; Oligochaete; Tubificid. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000400003 |
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| DÍAZ,MARÍA F; TAPIA,CAROLINA; JIMÉNEZ,PATRICIA; BACIGALUPE,LEONARDO. |
| Sphagnum peatlands are threatened at a global scale, not only by peat extraction, but also by Sphagnum harvesting. In Chile, dry Sphagnum moss is mainly exported for use as substrate for horticulture and orchids. Although the use of Sphagnum within Chile is limited, there are no data about its productivity and growth. These peatlands have a special microtopography with hummocks, hollows and lawns, which vary the distance of moss to the water table level. In these ecosystems, the water table is almost all year near the surface. We measured cumulative and relative growth rates and productivity during approximately one annual cycle in private Sphagnum peatlands that are being yearly harvested for commercial purposes. We evaluated the relationship between... |
| Tipo: Journal article |
Palavras-chave: Chile; Growth rate; Peatland; Sphagnum moss. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000400013 |
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| Amancio,Alda Lúcia de Lima; Silva,José Humberto Vilar da; Fernandes,João Batista Kochenborger; Sakomura,Nilva Kazue; Cruz,George Rodrigo Beltrão da. |
| The objective of this study was to evaluate the accuracy of five mathematical models (Gompertz, Logistic, Linear Hyperbolic, Quadratic and Quadratic Logarithmic) to describe the growth curve of GIFT strain Nile tilapia, Oreochromis niloticus, and to characterize the growth trajectory of body parts. To do this, 1,000 fingerlings, with an initial weight of 2.4 g were placed into 20 brick tanks of 2 m³ each, at a density of 25 fish m-3, for 180 days. The animals were fed daily, using the protein levels and number of meals appropriate to each stage. Every two weeks 20 fish were randomly sampled, submitted to a fasting period of 48 h and then slaughtered by thermal shock, in order to determine the weight of the whole fish, the skin without scales, skinless... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oreochromis niloticus; Growth curve; Gompertz; Growth rate. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000200005 |
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| GUILHERME,Edson; SOUZA,Izabele Rodrigues de. |
| ABSTRACT This study reports a successful reproductive event in Megascops choliba in eastern Acre, northern Brazil. An active M. choliba nest was monitored from the hatching of the eggs to the departure of the nestlings. Once hatched, the nestlings were weighed every two days to verify their weight gain over time. The nestlings remained in the nest for 30 days. The pattern of weight gain was similar to that found in other birds, presenting a rapid increase over the first 15 days, followed by a drastic reduction in the mean growth rate during the second half of the development period. Our observations indicate that the breeding season of M. choliba in southwestern Amazonia is similar as that reported for the species in the northern hemisphere. These are the... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Birds; Strigidae; Growth rate; Nest; State of Acre; Brazil. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300269 |
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| Santos, Vander Bruno; Apta -Agencia de Tecnologia dos Agronegócios; Mareco, Edson Assunção; Universidade Estadual Paulista; Silva, Maeli Dal Pai; Instituto de Biociências, UNESP. Botucatu. |
| Growth of Red, GIFT and Supreme Nile tilapia strains were evaluated. Fish were cultivated in indoor recirculation systems in 0.5 m³ tanks with controlled temperatures of 22, 28 and 30°C. Random samples of 20 fish from each strain (10 fish tank-1) were weighed at day 7, 30, 60, 90 and 120. Exponential model (y=AeKx) and Gompertz model (y = Aexp(-Be-Kx)) were fitted and the estimates parameters were obtained by Weighted Least Squares. At 22°C, Red, GIFT and Supreme strain presented similar growth and fit of exponential model. GIFT and Supreme strain presented higher growth rate at 30°C of cultivation when compared to Red strain. Temperature influences weight and age at the inflection point. The temperature of cultivation influences the growth description of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 50603000 exponential model; Growth rate; Supreme; GIFT; Red tilapia; Weighted model Exponential model; Growth rate; Supreme; GIFT; Red tilapia; Weighted model. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19443 |
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| SILVA,JANINE F.; GOMES,PAULA B.; SANTANA,ERIKA C.; SILVA,JOÃO M.; LIMA,ÉRICA P.; SANTOS,ANDRE M.M.; PÉREZ,CARLOS D.. |
| In Brazilian reefs, zoanthids, especially Palythoa caribaeorum are fundamental for structuring the local benthic community. The objective of this study was to determine the growth rate of P. caribaeorum, and to assess the influence of the site (different beaches), season (dry and wet), location (intertidal or infralittoral zones), and human pressure associated with tourism. For one year we monitored the cover of P. caribaeorum in transects and focused on 20 colonies. We cut off a square (100 cm2) from the central part of the colony and monitored the bare area for four months in each season. The average growth rates varied from 0.015 and 0.021 cm.day-1. The rate was homogeneous in all localities, and there was no influence from colony site, location, or... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth rate; Trampling; Tropical reefs; Zoantharia. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200985 |
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| Registros recuperados: 89 | |
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