RESUMO

The present study aimed to evaluate increasing levels of fish waste oil in diets for laying hens on serum biochemistry profile. 192 Hisex White laying hens at 29 weeks of age were used, with water and food ad libitum. The experimental design was completely randomized consisting of eight treatments corresponding to the inclusion levels of fish waste oil (0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 and 3.5%) in the diets, with four replicates of six birds each. Data collected were subjected to polynomial regression at 5% of significance. Significant differences (P<0.05) were observed in triglycerides, glucose, total cholesterol, and uric acid. These parameters presented a decrease when hens fed diets with higher level of fish waste oil. The results of the present study indicated that the inclusion of fish waste oil caused a significant effect in the serum biochemical profile of laying hens, especially in glucose, triglycerides, total cholesterol, and uric acid concentrations. The inclusion level of 3.5% of fish waste oil caused larger disequilibrium in the serum biochemical profile of laying hens.(AU)

O presente estudo objetivou avaliar os níveis crescentes de óleo de resíduo de pescado em dietas para poedeiras leves sobre o perfil bioquímico sérico. Foram utilizadas poedeiras Hisex White com 29 semanas, com água e ração ad libitum. O delineamento experimental foi inteiramente ao acaso, consistindo de oito tratamentos correspondentes aos níveis de inclusão de óleo de resíduo de pescado (0; 0,5; 1,0; 1,5; 2,0; 2,5; 3,0 e 3,5%) nas dietas, com quatro repetições de seis aves cada. Os dados coletados foram submetidos à regressão polinomial a 5% de significância. Diferenças significativas (P<0,05) foram observadas nas concentrações de triglicerídeos, glicose, colesterol total e ácido úrico. Esses parâmetros apresentaram uma diminuição quando as aves se alimentaram com rações contendo maior nível de óleo do resíduo de pescado. Os resultados do presente estudo indicaram que a inclusão de óleo do resíduo de pescado acarretou um efeito significativo no perfil bioquímico sérico de poedeiras, principalmente nas concentrações de glicose, triglicerídeos, colesterol total e ácido úrico. O nível de inclusão de 3,5% do óleo do resíduo de pescado acarretou maior desequilíbrio no perfil bioquímico sérico das poedeiras.(AU)

Assuntos

RESUMO

The present study aimed to determine the ideal sodium levels for muscovy ducks in housing. Two hundred and forty muscovy ducks of creole lineage were used, distributed in boxes with water and food ad libitum. The experimental design was completely randomized, where treatments were constituted by six nutritional plans (initial, growth and termination) with different sodium levels, and four replicates of 10 muscovy ducks each. The birds had weekly performance evaluations, and after 90 days, eight birds (four males and four females) in each treatment were slaughtered for evaluation of carcass traits. Data collected were subjected to Tukey test at 5% of significance. Differences were observed (p 0.05) in performance (feed intake and feed conversion), where average levels of sodium presented better results. In carcass yields, average levels presented a positive influence (p 0.05) on muscovy duck growth. Male muscovy ducks presented better feed efficiency than females in the same period. The present study indicates that nutritional plan 3 (initial = 0.25%; growth = 0.30% and termination = 0.35%) showed better nutritional requirements of sodium for muscovy ducks in housing, obtaining better performance and carcass development.(AU)

Assuntos

RESUMO

The present study aimed to determine the ideal sodium levels for muscovy ducks in housing. Two hundred and forty muscovy ducks of creole lineage were used, distributed in boxes with water and food ad libitum. The experimental design was completely randomized, where treatments were constituted by six nutritional plans (initial, growth and termination) with different sodium levels, and four replicates of 10 muscovy ducks each. The birds had weekly performance evaluations, and after 90 days, eight birds (four males and four females) in each treatment were slaughtered for evaluation of carcass traits. Data collected were subjected to Tukey test at 5% of significance. Differences were observed (p 0.05) in performance (feed intake and feed conversion), where average levels of sodium presented better results. In carcass yields, average levels presented a positive influence (p 0.05) on muscovy duck growth. Male muscovy ducks presented better feed efficiency than females in the same period. The present study indicates that nutritional plan 3 (initial = 0.25%; growth = 0.30% and termination = 0.35%) showed better nutritional requirements of sodium for muscovy ducks in housing, obtaining better performance and carcass development.

Assuntos