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Previous issue date: 2017-12-22 / A coturnicultura de corte vem se tornando uma atividade altamente promissora no pa?s, se fazendo necess?ria a busca por alternativas para redu??o nos custos, otimizando a produ??o de carne aliado a sustentabilidade. Alguns produtos podem ser utilizados como melhoradores do desempenho, por?m, podem causar problemas na comercializa??o se distribu?dos em pa?ses mais exigentes. Uma alternativa seria o uso do extrato pirolenhoso (EP), que ? um produto que atua como melhorador de desempenho natural por conter em sua composi??o compostos fen?licos, alde?dos e cetonas que tem propriedades bactericidas, antif?ngicas e antioxidantes. Desse modo, objetivou-se avaliar o desempenho e rendimento de carca?a de codornas europeias alojadas em dois tipos de cama suplementadas com extrato pirolenhoso. O experimento foi conduzido utilizando 400 codornas de corte de 1 a 42 dias, distribu?das em um delineamento inteiramente casualizado em esquema fatorial 5x2, com cinco n?veis de extrato pirolenhoso (0,0; 1,0; 1,5; 2,0 e 2,5%) e dois tipos de cama (nova e usada), totalizando 10 tratamentos e 4 repeti??es sendo 10 aves por unidade experimental, alojadas em boxes. As aves foram pesadas no inicio e no final do per?odo experimental para avalia??o dos par?metros de desempenho (ganho de peso (GP), consumo de ra??o (CR) e convers?o alimentar (CA)). Ao final do per?odo experimental, foram abatidas 8 aves de cada tratamento para avalia??o da carca?a (rendimento de carca?a (RQ) e peso dos ?rg?os). Foram avaliados ainda a analise econ?mica da utiliza??o do extrato na ra??o, atrav?s dos c?lculos de custo da ra??o, coeficiente operacional efetivo, receita bruta, margem bruta do coeficiente operacional efetivo, lucro operacional efetivo e ?ndice de lucratividade. Os n?veis de suplementa??o de extrato pirolenhoso utilizado nas ra??es, n?o influenciaram (P>0,05) o GP e CA das aves alojadas em cama nova. Para as codornas alojadas em cama usada, foi observado efeito linear para CR, GP e CA. Observou-se melhor RQ para as aves alojadas em cama nova quando comparadas as alojadas em cama usada. J? para o peso dos ?rg?os e a analise econ?mica, a inclus?o de EP na ra??o n?o foi observada efeito. Portanto, a inclus?o de at? 2,5% de extrato pirolenhoso na ra??o de codornas europeias alojadas em cama usada diminuiu o consumo sem alterar o ganho de peso melhorando a convers?o alimentar. Por?m quando alojadas em cama nova apresentaram melhor rendimento de carca?a. Em rela??o ao peso dos ?rg?os e viabilidade econ?mica, n?o foram encontradas diferen?as tanto de aves alojadas em cama nova quanto em aves alojadas em cama usada. / Cutting coturniculture has become a highly promising activity in the country, making it necessary to search for alternatives to reduce costs, optimizing meat production together with sustainability. For example, the use of pyrolignose extract (EP), which is a product that acts as a natural performance enhancer because it contains in its composition phenolic compounds, aldehydes and ketones that have bactericidal, antifungal and antioxidant properties. The objective of this study was to evaluate the performance, carcass yield and economic viability of European quails housed in two types of litter (new and used) supplemented with pyroligneous extract. The experiment was conducted using 400 shear quails from 1 to days, distributed in a completely randomized design in a 5x2 factorial scheme, with five levels of pyrolignous extract (0.0, 1.0, 40 1.5, 2.0 and 2.5%) and two types of bed, totaling 10 treatments and 4 replicates, 10 birds per experimental unit, housed in pits. The birds were weighed at the beginning and at the end of the experimental period to evaluate the performance parameters (weight gain (GP), feed intake (CR) and feed conversion (CA)). At the end of the experimental period, 8 birds of each treatment were slaughtered for carcass evaluation (carcass yield (CR) and body weight). The economic analysis of the utilization of PE in the ration was also performed through ration cost calculations, effective operating coefficient, gross revenue, gross margin of the effective operating coefficient, effective operating profit and profitability index. There was an interaction effect between PE and bed type on CR. The levels of PS supplementation used in the diets did not influence the performance variables of birds housed in a new bed. For quails housed in bed used, a decreasing linear effect was observed for CR and CA and increasing linear effect for GP. A better CR was observed for birds housed in a new bed when compared to those housed in a used bed. For birds housed in bed used, the RC showed quadratic effect with a better level of 2.5%. There was an interaction effect between EP and bed type for gizzard weight, where the non-EP diet of the birds housed in bed used presented a higher weight of this organ, for other body weights and economic analysis, the inclusion of PE in the diet did not influence these parameters. It is therefore recommended that up to 2.5% of the pyroligneous extract be included in the European quail ration from 1 to 42 days old regardless of the type of litter used at breeding.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/25000 |
| Date | 22 December 2017 |
| Creators | Di?genes, G?ssica Vitalino |
| Contributors | 80449859304, Oliveira, Camilla Roana Costa de, 06154623402, Moreira, Faviano Ricelli da Costa, 02334056405, Moreira, Jos? Aparecido, Teixeira, Elisanie Neiva Magalh?es |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM PRODU??O ANIMAL, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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