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      Utilização da Energia de Dietas para Frangos de Corte Formuladas com Óleo Ácido de Soja Translated title: Energy Utilization of Broiler Feeds Formulated with Acidulated Soybean Soapstock

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          Abstract

          O produto comercialmente chamado "óleo ácido de soja", resulta da acidificação da borra residual do processo de refino do óleo de soja. Este tem sido muito utilizado na indústria de rações animais, ainda que com vários questinamentos a cerca de sua eficiência, tais como a adulteração com outros ácidos graxos de baixo valor nutricional, nível de peroxidação, presença de impurezas, e valores energéticos não confiáveis. Neste estudo, foi avaliado o desempenho de frangos de corte consumindo dietas contendo óleo de soja ou óleo ácido de soja nos níveis de 4 e 8% ou a mistura das duas fontes em partes iguais de 2 e 4% cada. Essas dietas foram fornecidas para frangos de corte alojados em baterias climatizadas a partir dos 7 dias de idade. As aves que receberam misturas equivalentes de óleo ácido de soja e óleo de soja apresentaram menor peso corporal no final do experimento (aos 42 dias) quando comparadas com aquelas que consumiram apenas óleo ou óleo ácido de soja, independentemente do nível adicionado. O nível de inclusão de óleo de soja ou óleo ácido de soja não influenciou o peso final das aves. Foi verificado maior consumo de ração pelos animais que receberam dietas de menor nível de inclusão, o que contribuiu para piorar a conversão alimentar dos mesmos. O óleo ácido de soja demonstrou ser uma fonte energética alternativa de alto potencial econômico para uso em dietas comerciais para frangos de corte, apresentando valor energético de 8.114 kcal EMAn/kg de MS, valor 5% inferior ao determinado para o óleo de soja degomado.

          Translated abstract

          Acidulated soapstock, a by-product from the vegetable oil industry has been widely used in poultry nutrition. It is produced by the acid treatment of the residue left after refining vegetable oils. Several concerns exist on the use of this product, such as: adulteration, peroxidation, impurity, and uncertain energetic value. The current experiment focused on the use of the acidulated soapstock in broiler feeds compared with soybean oil. Feeds formulated with 4 and 8% added acidulated soapstock or soybean oil or their mixture in the ratios of 2 : 2 and 4 : 4 % were given to 7 day-old broiler chicks to 42 days of age placed in heated batteries. Birds receiving the diets with acidulated soapstock plus soybean oil had lower body weight at the end of the experiment when compared with birds on the treatments exclusively prepared with acidulated soapstock or soybean oil. This response was independent of the level of oil inclusion. Birds on the lower inclusion level consumed more feed, regardless of the oil source and showed poorer feed conversions, but did not show reduction in body weight when compared to the higher level of inclusion. Acidulated soapstock demonstrated an excellent potential as an energy supplement to be used in broiler feeds and had its energetic value determined as 8.114 kcal EMAn/kg DM, 5% below the value determined for soybean oil.

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          Most cited references16

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          Nutrient Requirements of Poultry

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            User's guide: satatistics

            NC Cary (1985)
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              Digestion and Absorption of Lipids in Chicks Fed Triglycerides or Free Fatty Acids: Synthesis of Monoglycerides in the Intestine

              D Sklan (1979)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbca
                Revista Brasileira de Ciência Avícola
                Rev. Bras. Cienc. Avic.
                Fundação APINCO de Ciência e Tecnologia Avícolas (Campinas )
                1806-9061
                May 2002
                : 4
                : 2
                : 1-13
                Affiliations
                [1 ] Universidade Federal do Rio Grande do Sul Brazil
                Article
                S1516-635X2002000200005
                10.1590/S1516-635X2002000200005
                4fffebf6-408f-4ffc-b122-c7835a92cce8

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1516-635X&lng=en
                Categories
                AGRICULTURE, DAIRY & ANIMAL SCIENCE
                ORNITHOLOGY

                Animal agriculture,Ornithology
                acidulated soapstock,broiler,energy,fat,ácidos graxos livres,energia,frango de corte,gordura,óleo ácido de soja

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