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Ciência Rural
Article . 2007
Data sources: DOAJ
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Influência da qualidade da casca do ovo sobre índices de produtividade de um incubatório industrial Influence of the eggshell quality on an industrial hatchery productivity indices

Authors: João Rodrigo Gil de los Santos; Cláudio Mário Fornari; Marcos Antônio Téo;

Influência da qualidade da casca do ovo sobre índices de produtividade de um incubatório industrial Influence of the eggshell quality on an industrial hatchery productivity indices

Abstract

Visando a melhorar a produtividade, muitas empresas do mercado avícola incubam a maioria dos ovos produzidos nas granjas, incluindo aqueles com problemas de casca. Para avaliar as conseqüências dessa prática, foram estudados os índices de produtividade de 6992 ovos das linhagens Ross e Cobb, agrupados em cinco categorias, segundo a integridade e a qualidade da casca e o local de postura: controle, trincados, deformados, trincados lavados e deformados lavados. Determinaram-se índices de fertilidade, eclodibilidade, mortalidade embrionária e contaminação. Os índices de eclodibilidade dos ovos deformados foram menores que os trincados e controle (P0,05). O maior índice de contaminação e de mortalidade embrionária foi nos ovos deformados (24,3% e 45,4%) e deformados lavados (36,1% e 34,0%). Os resultados sugerem que se deve dar preferência ao descarte de ovos deformados, independentemente do lavado e do local de postura quando se procura aumento da eficiência em incubatórios industriais.To increase productivity rates, many industries of the poultry market hatch most of the eggs produced in the farm, including those with damaged shells. Aiming at evaluating the implications of this practice in the productivity of industrial hatcheries, fertility, eclosion, mortality and contamination rates of 6992 eggs from the Ross and Cobb breeds, were studied. The eggs were allocated in five groups: control, crashed, deformed, washed crashed and washed deformed. Eclosion rates were lower in deformed eggs than in crashed and control eggs (P0.05). Contamination and mortality rates increased in deformed (24.3% and 45.4%) and washed deformed eggs (36.1% and 34.0%). The results suggest that deformed eggs should be preferentially eliminated from hatching.

Keywords

productivity, S, casca, Agriculture (General), Agriculture, produtividade, S1-972, incubatório, shell, eggs, hatching, ovo

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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