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| Registros recuperados: 12 | |
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| Santos,Rosa S.; Costa,Marcus R. da; Araújo,Francisco G.. |
| ABSTRACT Studies on age and growth of fish populations have direct application in fisheries and contribute for policies of conservation. Our aim was update information on the Micropogonias furnieri growth parameters based on sagittae otoliths annulis readings, and we expected that the studied population from Southeast Brazil can reach more longevity than the reported in the available literature. We examined 286 individuals between August-2010 and July-2011 from Ubatuba Bay, SP. The Total Length ranged 200-480 mm. The determined growth parameters were: Males, L∞ =523.4mm, k = 0.05×year-1, t0 = -8.78 year; Females L∞ = 573.5mm, k = 0.06 × year-1, t0 = -7.49 year. The MI and % of edge type evidenced the formation of one ring per year during autumn/winter,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal fishes; Growth parameters; Longevity; Marginal increment; Ubatuba. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100223 |
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| Ahmad,H; Khalique,A; Naveed,S; Zia,MW; Rasool,Z; Zahid,U; Moeed,A. |
| ABSTRACT This study was conducted to investigate the effect of a commercial antioxidant (CAO; Rendox Plus®) treatment in stabilizing the poultry byproduct meal (PBPM) and then the subsequent effect of the treated PBPM on growth of broilers. Five batches A, B, C, D and E of PBPM were treated with CAO at 0, 250, 500, 750 and 1000 mL/ton, respectively and stored for 42 days. Oxidative stability of PBPM was estimated on day 0 and then weekly using Peroxide Value and Thiobarbituric Acid tests. PBPMs treated with 750 &1000 mL/ton presented the least oxidation and were selected to be included in broiler diets. A total of 240 one-day-old non-sexed Hubbard broilers were randomly divided into two flocks of 120 birds each. Each flock was further divided into four... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler; Growth parameters; Poultry byproduct meal; Fat oxidation; Antioxidant slaughter traits. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300471 |
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| Grieser,DO; Furlan,AC; Ribeiro,PM; Zancanela,V; Del Vesco,AP; Gasparino,E; Zardin,AMSO; Marcato,SM. |
| ABSTRACT The objective of this study was to evaluate the adjustment quality of nonlinear models to data organs growth, carcass and body components of meat-type (Coturnix coturnix coturnix) and japanese laying-type (Coturnix coturnix japonica) quail. A total of 1350 quails from one to 42 d old were distributed in a completely randomized design, with five replicates each. To determine the organs growth (gut, heart, liver and gizzard), carcass and body components (wing, thigh and drumstick, back and breast), two quails per repetition were slaughtered weekly. The data were evaluated in function of different nonlinear models (Logistical, Brody, Richards, Von Bertalanffy and Gompertz). All models studied adjusted the data, differing in adjustment quality. Brody... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gompertz equation; Growth parameters; Breast; Number of interaction; Strains. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400701 |
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| Tholon,P; Queiroz,SA. |
| Growth curves models provide a visual assessment of growth as a function of time, and prediction body weight at a specific age. This study aimed at estimating tinamous growth curve using different models, and at verifying their goodness of fit. A total number 11,639 weight records from 411 birds, being 6,671 from females and 3,095 from males, was analyzed. The highest estimates of a parameter were obtained using Brody (BD), von Bertalanffy (VB), Gompertz (GP,) and Logistic function (LG). Adult females were 5.7% heavier than males. The highest estimates of b parameter were obtained in the LG, GP, BD, and VB models. The estimated k parameter values in decreasing order were obtained in LG, GP, VB, and BD models. The correlation between the parameters a and k... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth parameters; Growth evaluation; Non-linear models; Wild birds. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100004 |
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| Koetz Junior,Celso; Roso,Vanerlei Mozaquatro; Fávaro,Patricia da Cruz; Pereira,Gabriel Ribas; Borges,Marcelo Henrique Favaro; Barca Junior,Flávio Antônio; Barcellos,Júlio Otávio Jardim; Ribeiro,Edson Luis de Azambuja. |
| ABSTRACT This study was intended to estimate the genetic associations between growth traits and visual scores with possible changes in mature weight (MW) in 397,900 Nellore animals. A bi-character analysis was performed to estimate the (co)variances and genetic parameters for MW, which comprises the following traits: conformation, finishing precocity, musculature at weaning (WC, WP, and WM) and yearling (YC, YP, and YM), birth weight (BW), weight from birth to weaning (WG), weight from weaning to yearling (YG), and final index (FIND). The observed mean MW was 417.6±56.2 kg, and the direct genetic effect mean estimated heritability ( h 2 a 1) of MW was 0.45. Overall, the BW was 31.0±3.7 kg, and the estimated h² was 0.34. The heritability estimate of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beef cattle; Growth parameters; Productive traits; Selection. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100301 |
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| Pereira,Gabriel Ribas; Barcellos,Júlio Otávio Jardim; Sessim,Amir Gil; Tarouco,Jaime Urdapilleta; Feijó,Fernanda Dornelles; Braccini Neto,José; Prates,Ênio Rosa; Canozzi,Maria Eugênia Andrighetto. |
| ABSTRACT This study was intended to evaluate body size structure and growth parameters of crossbred heifers fed at four nutritional levels to achieve puberty earlier. Animals were classified depending on their level of crossing between Nelore and Hereford and subjected to four nutritional levels (kg day−1) as follows: 0.5 (light; n = 32), 0.75 (medium; n = 32), 1.00 (high; n = 29), and 1.25 (very high; n = 27). Heifers at puberty and at weaning were individually classified for growth parameters. The fat thickness and longissimus muscle area throughout the experimental period were determined by ultrasonography. The height, heart girth, frame, and weight:height ratio were variables used to evaluate body traits. Univariate analysis of variance using the GLIM... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beef heifers; Growth parameters; Nutrition diets; Productivity; Ultrasonography. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000500413 |
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| Mohidin,Hasmah; Hanafi,Mohamed Musa; Rafii,Yusop Mohd; Abdullah,Siti Nor Akmar; Idris,Abu Seman; Man,Sulaiman; Idris,Juferi; Sahebi,Mahbod. |
| Balanced nutrient elements in fertilizer play a critical role in oil palm seedling successful growth and development, and at the same time reduces of fertilizer losses in the environment. This study examines the effect of different levels of N, P2O5 and K2O for oil palm seedlings in solution culture on growth traits, nutrient uptake in plant tissues and biomass accumulation under nursery conditions. Five concentration levels of N (50, 100, 300, 600 and 900 mg L–1), P2O5 and K2O (15, 30, 60, 90 and 120 mg L–1) were used in a completely randomized design (CRD) with five replications for each. Parameters measured during the growing period include - plant height, leaf number/plant, stem diameter, SPAD chlorophyll value, and at harvest – total leaf area, root... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth parameters; Solution culture; Oil palm; Optimum level. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300247 |
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| Ezin,Vincent; Pena,Robert De La; Ahanchede,Adam. |
| A greenhouse experiment was conducted to investigate the effect of flooding on two tomato cultivars and two wild related species. Forty days old tomato plants were subjected to a continuous flooding stress of different durations: 0, 2, 4 and 8 days. Plant pots were placed inside larger plastic pots; they were irrigated with excessive quantity of tap water at 25ºC so that the level of water above the surface of soil was 15 cm throughout the flooding period. At the bottom of each plastic pot a drilled hole allowed complete drainage of the pot after flooding. Parameters studied include plant height, number of leaves, leaf length, chlorophyll fluorescence, chlorophyll content, wilting, leaf senescence, adventitious root formation, number of flowers and fruits... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tomato genotypes; Flooding conditions; Chlorophyll; Growth parameters; Yield and yield components. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202010000200007 |
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| Registros recuperados: 12 | |
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