RESUMO
The aim of this study was to determine the effects of dietary supplementation with red algae powder (Chondrus crispus) on the growth performance, carcass traits, lymphoid organ weights and intestinal pH y in broiler chickens. A total of 300 1-day-old B34 line male broiler chickens were randomly allotted to three treatments, four replicates per treatment and 25 birds per replicate. The experimental treatments consisted of a basal diet (T0) and dietary supplementation of 0.30 (T2) and 0.40% (T2) red algae powder. Body weight at 1, 21 and 32 days did not show significant differences (p>0.05) among treatments. At 21 days, T1decreased (p 0.05) the feed intake and feed conversion ratio. However, from 22 to up to 32 days, these productive indicators increased (p 0.05) with the use of the natural product (red algae powder) tested. Meanwhile, T1 improved (p 0.05) the carcass and breast yields and decreased the abdominal fat yield, and T2increased (p 0.05) the relative weights of the bursa of Fabricius and the thymus. The relative weight of the spleen, the other edible parts and the intestinal pH did not change (p>0.05) with the red algae supplementation. The dietary supplementation of 0.30% red algae improved the growth performance (at 21-day-old) and some edible parts; also, the dietary supplementation of 0.40% increased the relative weight of the lymphoid organs, without changing the intestinal pH of broilers.
Assuntos
Animais , Chondrus/metabolismo , Galinhas/crescimento & desenvolvimento , Galinhas/fisiologia , Galinhas/metabolismoRESUMO
The aim of this study was to determine the effects of dietary supplementation with red algae powder (Chondrus crispus) on the growth performance, carcass traits, lymphoid organ weights and intestinal pH y in broiler chickens. A total of 300 1-day-old B34 line male broiler chickens were randomly allotted to three treatments, four replicates per treatment and 25 birds per replicate. The experimental treatments consisted of a basal diet (T0) and dietary supplementation of 0.30 (T2) and 0.40% (T2) red algae powder. Body weight at 1, 21 and 32 days did not show significant differences (p>0.05) among treatments. At 21 days, T1decreased (p 0.05) the feed intake and feed conversion ratio. However, from 22 to up to 32 days, these productive indicators increased (p 0.05) with the use of the natural product (red algae powder) tested. Meanwhile, T1 improved (p 0.05) the carcass and breast yields and decreased the abdominal fat yield, and T2increased (p 0.05) the relative weights of the bursa of Fabricius and the thymus. The relative weight of the spleen, the other edible parts and the intestinal pH did not change (p>0.05) with the red algae supplementation. The dietary supplementation of 0.30% red algae improved the growth performance (at 21-day-old) and some edible parts; also, the dietary supplementation of 0.40% increased the relative weight of the lymphoid organs, without changing the intestinal pH of broilers.(AU)
Assuntos
Animais , Galinhas/crescimento & desenvolvimento , Galinhas/metabolismo , Galinhas/fisiologia , Chondrus/metabolismoRESUMO
This study was conducted to determine the effects of dietary inclusion with linseed and pumpkin seed meals on growth performance, carcass traits and breast meat fatty acids profile of helmeted guinea fowls. A total of 120 meat-type helmeted guinea fowl females of 12 weeks of age were fed with 0 (T0), 100 (T1) and 200 (T2) g/kg of linseed (LM) and pumpkin seed meals (PSM) for 56 days, in a completely randomized design with 10 replicates per treatment and four birds per replicate. The inclusion up to 200 g/kg of LM and PSM did not affect the livability, initial live weight and feed intake (p>0.05). However, final live weight and feed:gain ratio improved significantly (p0.05). The oleaginous seeds (LM and PSM) decreased (p0.05) and the eicosatrienoic and arachidonic acids in breast meat (p<0.05). It is recommended the inclusion of 100 g/kg of LM and PSM to improve the live weight, weight and yield of the edible portions and the essential fatty acids in breast meat of guinea fowl, without affecting the sensory quality of the meat.
Assuntos
Feminino , Animais , Cucurbita/efeitos adversos , Galinhas/crescimento & desenvolvimento , Galinhas/fisiologia , Linho/administração & dosagem , Linho/efeitos adversos , Alimentos Fortificados/efeitos adversos , Aumento de Peso , Ácidos GraxosRESUMO
This study was conducted to determine the effects of dietary inclusion with linseed and pumpkin seed meals on growth performance, carcass traits and breast meat fatty acids profile of helmeted guinea fowls. A total of 120 meat-type helmeted guinea fowl females of 12 weeks of age were fed with 0 (T0), 100 (T1) and 200 (T2) g/kg of linseed (LM) and pumpkin seed meals (PSM) for 56 days, in a completely randomized design with 10 replicates per treatment and four birds per replicate. The inclusion up to 200 g/kg of LM and PSM did not affect the livability, initial live weight and feed intake (p>0.05). However, final live weight and feed:gain ratio improved significantly (p<0.05). The T1 increased (p<0.05) the carcass yield and the T2 improved the breast weight and weight and yield of leg. Also, these experimental diets did not affect the carcass weight, breast yield and sensory quality of meat (p>0.05). The oleaginous seeds (LM and PSM) decreased (p<0.05) the mystic, palmitic and octadecanoic acids and the w-6/w-3 ratio, as well as increased the linoleic, a-linolenic, eicosapentanoic and docosahexanoic acids (p<0.05), but did not modify the concentration of monounsaturated fatty acids (p>0.05) and the eicosatrienoic and arachidonic acids in breast meat (p<0.05). It is recommended the inclusion of 100 g/kg of LM and PSM to improve the live weight, weight and yield of the edible portions and the essential fatty acids in breast meat of guinea fowl, without affecting the sensory quality of the meat.(AU)