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Registros recuperados: 6
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Eficiencia relativa de fracoes granulometricas de calcarios sul-mato-grossenses. Repositório Alice
KURIHARA, C.H.; MAEDA, S.; HERNANI, L.C.; SILVA, W.M..
Em Mato Grosso do Sul, existem jazidas de calcarios provenientes de rocha sedimentar, aos quais sao atribuidos empiricamente maior reatividade inicial em relacao aos calcarios de rocha metamorfica. Na Embrapa-Centro de Pesquisa Agropecuaria do Oeste (CPAO), em Dourados, MS, avaliou-se, em casa de vegetacao, a eficiencia relativa de fracoes granulometricas de calcarios, em Latossolo Vermelho-Escuro alico franco-areno-argiloso e Latossolo Roxo distrofico muito argiloso. Em cada solo, aplicou-se dose de calcario estimada para elevar o pH em CaCl2 para 6,0. Os tratamentos, dispostos em delineamento inteiramente ao acaso, consistiram de: testemunha sem calcario e a aplicacao de quatro fracoes granulometricas (malhas de 4,00 a 2,00; 2,00 a 0,84; 0,84 a 0,30 e...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Reatividade; Incubacao; PH do solo; Material de origem; Sedimentar; Metamorfica; Tamanho de particula; Reactivity; Incubation; Soil pH; Parent material; Sedimentary rocks; Metamorphic rocks; Particle size.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/100720
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Environmental and genetic effects on the temperament variability of Guzerá (Bos indicus) females. Repositório Alice
PEIXOTO, M. G. C. D.; BRUNELI, F. A. T.; BERGMANN, J. A. G.; SANTOS, G. G. dos; CARVALHO, M. R. S.; BRITO, L. F.; PEREIRA, M. C.; PIRES, M. de F. A..
The temperament of Guzerá females was evaluated to identify genetic and non-genetic factors influencing the expression of this trait, providing information to support decision-making in breeding programs. Temperament assessed by reactivity was evaluated in a livestock scale using visual scoring (TS) and an electronic device (TR). Measurements were repeated during the rainy and dry seasons in 1354 females from five herds comprising 2663 records. Estimates of (co)variance components and genetic parameters were obtained using the derivative-free restricted maximum likelihood method. The reactivity of Guzerá females widely varied. There is indication that the bulls used in these herds have been chosen based also on their daughters? temperament. The effects of...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Animal behaviour; Animal handling; Dairy cattle; Reactivity; Zebu; Animal behaviour; Animal handling; Dairy cattle.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1058682
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Ethology of cross-breed cows milked in the presence or absence of calves Animal Sciences
Silva, Vinícius Lopes da; Silva, Fabiano Ferreira da; Silva, Robério Rodrigues; Teixeira, Fábio Andrade; Costa-Lopes, Lívia Santos; Souza, Danilo Ribeiro de.
The behavior of crossbreed cows, milked in the presence or absence of their calves, was analyzed. The trial was conducted on the Dairy Cattle Sector of UESB School of Animal Science in Itapetinga BA Brazil. Twenty crossbreedHolsteinx Gir cows were distributed in a randomized block design with 10 replications for each treatment for the experimental period of 31 days, during lactation. Results were analyzed by nonparametric chi-square test at 5% significance, except the variables time at the milking sector and milk production which were evaluated by analysis of variance and F test at 5% probability. Although cows with the presence of calves during milking had higher reactivity, behavioral activities and more time in the milking sector, milk production was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.04.05.02-0 lactation; Production; Reactivity; Time.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22959
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Ewe maternal behavior score to estimate lamb survival and performance during lactation Animal Sciences
Moraes, Andreia Barros de; Poli, Cesar Henrique Espírito Candal; Fischer, Vivian; Fajardo, Neuza Maria; Aita, Marta Farias; Porciuncula, Gabriela Caillava da.
Mortality of perinatal lambs and low weight at weaning cause huge liabilities to farmers. Current study describes maternal-filial behavior and evaluates the use of maternal behavior score (MBS) to estimate the behavior of ewes and lambs soon after birth, and correlate it with lamb mortality and performance during lactation. Thirty-seven Corriedale ewes were used in a completely randomized design. MBS was assessed up to 24 hours after birth, taking into consideration the distance of the ewe from the lamb at the approach of a person. Maternal behavior, placental weight, weight gain of the lambs until weaning and their survival rate were also evaluated until two hours after lambing. More than 90% of the ewes had adequate maternal behavior, with parental care,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lambing; Reactivity; Survival; Weaning..
Ano: 2016 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/29923
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Genetic evolution of milk yield, udder morphology and behavior in Gir dairy cattle R. Bras. Zootec.
Fernandes,André Rabelo; Faro,Lenira El; Vercesi Filho,Anibal Eugênio; Machado,Carlos Henrique Cavallari; Barbero,Leandro Martins; Bittar,Eustáquio Resende; Igarasi,Mauricio Scoton.
ABSTRACT The objective of this study was to analyze the genetic evolution of milk production, udder morphology, and animal behavior of Gir dairy cattle. Data were obtained on the predicted breeding values for milk yield of 60,226 cows born from 1968 to 2015 and standardized predicted breeding values for udder conformation and milking behavior of 7,635 cows born from 1987 to 2015. The influence of tested bulls on genetic trends was discussed, with special focus on the period after 1993, the year when the predicted breeding values of the first group of tested bulls were released. The traits of interest were 305-d milk yield, fore udder attachment, rear udder height, rear udder width, teat length, teat thickness, ease of milking, and reactivity. Significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Linear traits; Mammary system; Reactivity; Teat morphology; Udder attachment.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100304
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The relative importance of environmental stochasticity, interspecific interactions, and observation error: Insights from sardine and anchovy landings ArchiMer
Hosack, Geoffrey R.; Trenkel, Verena; Dambacher, Jeffrey M..
Long-term time series of sardine and anchovy landings often suggest negative dependence between these species, and an array of mechanisms have been proposed as explanations. We reduce these propositions to four basic hypotheses of (1) independence, (2) correlated process noise, (3) interspecific interactions, and (4) correlated observational error. We use a Bayesian approach to develop priors for parsimonious state space models with both process noise and observation error that represent each of these hypotheses, and apply this approach to five long-term time series of landings collected from the Pacific and Atlantic Oceans. Model comparison criteria suggest that the hypothesis of correlated process noise has the broadest support, where the temporal...
Tipo: Text Palavras-chave: Adaptive Metropolis; Bayes factors; DIC; Gompertz model; Hyperstability; Kalman filter; Model comparison; Reactivity; Small pelagic fishes; Stability.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00159/27072/26066.pdf
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