Cashew nut shell liquid as a source of anacardic acid in feeds laying hens

• Autor(a) principal: NÃdia de Melo Braz
• Data de Publicação: 2015
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFC
• Texto Completo: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15398
• topic: Ãcido orgÃnico; Antioxidante natural; Desempenho; OxidaÃÃo lipÃdica; Poedeiras; Organic acid; Natural antioxidant; Performance; Lipid oxidation; ZOOTECNIA

The objective of this study was to evaluate the blood biochemical parameters, the enzymatic activity, lipid peroxidation of liver and tissues of the reproductive system (ovary, magnum, and uterus), as well as the effects of adding the cashew nut shell (CNSL) in the diet of laying hens on performance, quality and stability of lipid eggs. A total of 216 Hisex White commercial laying hens were distributed randomly into six treatments, with six replicates of six birds. Treatments consisted of a diet without performance promoter (PP); a diet with PP; and diets without PP, with addition of increasing levels of CNSL (0.25, 0.50, 0.75, and 1.00%). Addition of CNSL to the diet did not affect the blood biochemical parameters (uric acid, creatinine, alanine aminotransferase, aspartate aminotransferase, total cholesterol, HDL cholesterol, LDL cholesterol, and triglycerides), in the enzymatic activity (superoxide dismutase and non-protein sulfhydryl groups) in the organs (liver, ovary, magnum and uterus), in the peroxidation of lipids from the blood serum, liver, magnum and uterus, in the performance variables and characteristics of eggs. However, the levels of 0.75% and 1.00% CNSL provided a lower TBARS content in the birdsâ ovary, whereas the treatment without the growth promoter provided a higher value. The color of the yolk was superior to treatment with and without PP CNSL 0.75% in the feed in the bottom and PP treatment. Regression analysis showed a significant quadratic effect of dietary inclusion of CNSL on yolk color measured color fan, with the best estimated level to 0.62%. The color component a* was superior level of 0.50% CNSL, while treatment with PP had the lowest value. Quadratic effect was observed in lipid oxidation in the yolk of the egg station recently, reaching a minimum of 0.58% in the feed LCC. Comparing the average level of 0.75% of CNSL showed the lowest TBARS, while treatments with PP, without PP and the level of 1.00% of LCC had higher TBARS. Addition of up to 1% of the CNSL as a source of anacardic acid in the laying hen diets does not influence their blood biochemical parameters, the activity of the superoxide dismutase enzyme and non-protein sulfhydryl groups in the liver, ovary, magnum, and uterus, but improves the color of egg yolk and that the level of 0.75% of CNSL is effective in reducing lipid oxidation in the ovary and fresh gems.