performance comparison between broilers positive and negative for antibodies against the chicken anemia virus comparação de desempenho entre frangos positivos e negativos para anticorpos contra o vírus da anemia das galinhas

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ID: 217267
2003
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Abstract
The chicken anemia virus (CAV) is present in virtually every country investigated, Brazil including. The aim of this study was to determine what the difference in performance is between positive (progeny of breeders vaccinated or with natural infection) and negative broilers to the presence of antibodies against the CAV in currently intensive raising systems. As a result, it was observed that negative broilers were significantly heavier than positive broilers. Negative males had a final weight 5.43% higher than positive males. There was no significant difference among different treatments in relation to parameters as mortality and feeding conversion. These study indicated that the presence of antibodies against CAV in broilers - may it be through vaccination or natural infection of breeders - did not generate progeny with superior performance under the tested raising conditions.
O vírus da anemia das galinhas (CAV - "chicken anemia virus") está presente em praticamente todos os países investigados, inclusive no Brasil. O objetivo deste trabalho foi determinar qual a diferença de desempenho, comparando frangos positivos (progênie de matrizes vacinadas ou com infecção natural) com frangos negativos para a presença de anticorpos contra o CAV, no sistema atual de criação intensiva. Como resultado, foi observado que os frangos negativos foram significativamente mais pesados que os frangos positivos. Os machos negativos tiveram um peso final 5,43% superior ao dos machos positivos. Não houve diferença significativa entre os tratamentos em relação aos parâmetros de mortalidade e conversão alimentar. Este estudo indicou que a presença de anticorpos contra o CAV em frangos de corte, seja através da vacinação ou infecção natural das matrizes, não gerou uma progênie com melhor desempenho nas condições de criação testadas.
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rubin2003brazilianperformance Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Lauricio Librelotto Rubin;Luiz Antônio Faccenda de Ávila;Andréa Machado Leal Ribeiro;Vera Wald;Cláudio Wageck Canal
Journal ieee software
Year 2003
DOI
10.1590/S1517-83822003000500030
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500030
Keywords
broiler performance vaccine chicken anemia virus vacina

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