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Period of incubation and posthatching holding time influence on broiler performance Rev. Bras. Ciênc. Avic.
Almeida,JG; Vieira,SL; Gallo,BB; Conde,ORA; Olmos,AR.
The present study had the objective of investigating the performance of broilers housed immediately after hatching or after a 12 or 24 hour of post-hatching holding time. One thousand and six hundred male Ross 308 broiler chicks with an initial body weight of 46 grams were used. These chicks were distributed in a completely randomized experimental design with 5 treatments and 8 replications of 35 birds in each treatment. The treatments in this study consisted of the removal of chicks from the hatchery in three different times: after 480, 492 and 504 hours of incubation. In each one of these times, 280 chicks were removed from the hatchery and immediately housed. Another group of an identical number of chicks of each time remained in the hatchery to be...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Post-hatch period; Broiler performance; Incubation period; Hatchability.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300003
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Injuries caused by citrus leafminer (Phyllocnistis citrella) exacerbate citrus canker (Xanthomonas axonopodis pv. citri) infection Trop. Plant Pathol.
Jesus Junior,Waldir C.; Belasque Júnior,José; Amorim,Lilian; Christiano,Rock Seille C.; Parra,José Roberto P.; Bergamin Filho,Armando.
After the introduction of citrus leafminer in São Paulo State, an increase in the number of new plants infected with citrus canker has been observed. The interaction between these two organisms is known, but there is no information about how the leafminer damage intensifies citrus canker incidence and severity. The objectives of this paper were to evaluate the effects of leafminer damage in citrus canker infection and its influence on the monocyclic components of the disease on Citrus limonia. Higher incidence of diseased plants, AUDPC (area under the disease progress curve), disease severity and shorter incubation periods were observed in plants inoculated after insect infestation. These factors explain the association found between the higher citrus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Spread; Incubation period; Insect-pathogen interaction.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582006000300006
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Gray mold in immature fig fruit: pathogenicity and growth temperature Ciência Rural
Czaja,Eliane Aparecida Rogovski; Moreira,Rafaele Regina; Rozwalka,Luciane Cristina; Figueiredo,Josiane Aparecida Gomes; Mio,Louise Larissa May De.
ABSTRACT: Several diseases can be associated with figs but recently a fruit rot was observed in green fruit. The purpose of this study was to determine the pathogenicity of Botrytis sp., to quantify incubation period (IP) and latent period (LP), to verify the optimum temperature for mycelial growth, and to identify the different species of Botrytis sp. isolated from immature figs. Botrytis sp. isolated from figs proved to be pathogenic to immature fruit with and without wounding the fruit surface and ostiole. The IP period was 3 days on fruit with wounds and 5 days on fruit inoculated within the ostiole (without wound). The LP was 6 days in all treatments. The optimum temperature for mycelial growth was 18°C. Inferred from sequences of a segment...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ficus carica; Botrytis sp.; Incubation period; Latency period..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000901524
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