Abstract The in vitro anthelmintic activity of essential oils from the Lamiaceae family species against Ancylostoma spp. eggs was evaluated, as well as the chemical composition by GC/MS of these essential oils. The major chemical compounds for O. vulgare were 4-terpineol, while for the essential oil of O. majorana, o 4-terpineol, and for the oil of R. officinalis it was observed cineole as major components. For this, hatchability tests were performed, where the parasite eggs were exposed to concentrations of 0.07% to 2.5% of the essential oils of Origanum vulgare, Origanum majorana and Rosmarinus officinalis. The assay was accompanied by a control with thiabendazole hydrochloride, a control with distilled water and a control with tween 80. The chemical composition of each essential oil sample was determined by gas chromatography. It was observed that all oils showed ovicidal action, and the percentage of inhibition of hatchability of R. officinalis oil was greater than 90% at concentrations from 0.62% to 2.5%. As for the essential oils of O. vulgare and O. majorana, the concentrations of 0.31% to 2.5% were those that presented an inhibitory percentage greater than 90%. Thus, this study showed that the essential oils of R. officinalis, O. vulgare and O. majorana inhibit the hatchability of Ancylostoma spp., being promising for the control of this helminth.

RESUMO O objetivo deste estudo foi avaliar o efeito de níveis de farelo de canola na dieta de frangos de corte sobre o rendimento de cortes, perfil de ácidos graxos, características físicas, composição química e sensorial da carne do peito. Foram utilizados 300 frangos, de ambos os sexos, da linhagem Cobb, distribuídos em um delineamento inteiramente casualizado, com cinco tratamentos e seis repetições com dez aves por unidade experimental. As aves foram alimentadas com 0, 25, 50, 75 e 100% de substituição do farelo de soja pelo de canola na dieta. Após 42 dias, quatro aves por repetição foram abatidas para analisar o rendimento de carcaça e o peito foi utilizado para análise do perfil de ácidos graxos, sensorial e composição química e física. O perfil de ácidos graxos foi influenciado (p < 0,05) pelo aumento do farelo de canola, diminuindo (p < 0,05) o teor de ácidos graxos saturados e o ácido linoleico e promoveu o aumento (p < 0,05) do ácido linolênico. Na análise sensorial, o sabor residual aumentou (p < 0,05) com a substituição de 100% e a dureza diminuiu (p < 0,05). O farelo de canola pode substituir o farelo soja até o nível de 25% sem afetar o rendimento de carcaça e composição química, instrumental e sensorial da carne.

ABSTRACT This study aimed to evaluate the effect of dietary levels of canola meal on carcass yield, fatty acids profile, physical characteristics, chemical and sensory composition of breast meat of broilers. A total of 300 one-day-old, both sexes, Cobb broilers were assigned to a completely randomized design with five treatments and six replicates of ten birds each. Birds were given 0, 25, 50, 75 and 100% canola meal in place of soybean meal in the diet. After 42 days, four birds per replicate were slaughtered to analyze the carcass yield and the breast was used for analysis of fatty acid profile, sensory analysis and chemical and physical composition. The fatty acid profile was influenced by increasing levels of canola meal, decreasing (p < 0.05) the content of saturated fatty acids and linoleic acid, and increasing (p < 0.05) the content of linolenic acid. In the sensory analysis, the residual flavor became stronger (p > 0.05) with 100% replacement and the hardness decreased (p < 0.05). Canola meal can replace soybean meal up to the level of 25% without affecting carcass yield and chemical, instrumental and sensory analysis of meat.

Our study evaluated how the consumption of diets with low (LOW group - 0.4/1) or high (CON group - 13.6/1) omega-6/omega-3 ratio across generations (F1 and F2) can modulate liver fatty acid (FA) profile and blood biomarkers. Liver content of α-linolenic acid was higher in animals always fed with LOW diet than animals that changed from CON to LOW diet, which by your time was higher than animals always fed with CON diet. Liver saturated FA concentration decreased in both groups from F1 to F2. In conclusion, both diets were efficient in decreasing the saturated FA liver content across generations, the LOW ratio diet was more effective in reducing blood triglycerides and non-esterified fatty acids, and there was a multigenerational effect of the LOW ratio diet, improving the FA profile even when the offspring start receiving the CON diet.