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1.
Rev. MVZ Córdoba ; 18(2): 3467-3473, May-Aug. 2013. ilus, tab
Article in Spanish | LILACS | ID: lil-689585

ABSTRACT

Objetivo. Evaluar el desempeño productivo y el rendimiento de la canal en pavos en crecimiento alimentados con dietas elaboradas con harina de plumas (HP). Materiales y métodos. Los tratamientos fueron una dieta control y dos dietas experimentales con harina de plumas tratada con 50 ó 100 g de NaOH/kg. Se utilizó un diseño de bloques al azar. El consumo de alimento y el peso de los animales se registró cada dos semanas. Los datos del desempeño productivo se analizaron con el procedimiento MIXED del programa estadístico SAS. El rendimiento de la canal se analizó con el procedimiento GLM del programa estadístico SAS. Resultados. Los pavos que consumieron la dieta testigo tuvieron mejores ganancias de peso (GP), consumo de alimento (CA), peso de la canal y de sus partes (p<0.05) que aquellas con harina de plumas. Sin embargo, se observó una mayor GP, CA, peso de la canal y del muslo (p<0.05) cuando se trató la harina de plumas con 100 g de NaOH/kg. Conclusiones. Los resultados obtenidos indican que la utilización de harina de plumas disminuyó el comportamiento productivo y el rendimiento de canal en los pavos. Sin embargo, el aumento del tratamiento de la harina de plumas de 50 a 100 g de NaOH/kg mejoró el comportamiento productivo y el rendimiento de canal.


Objective. Evaluate the productive performance and carcass yield of growing turkeys fed with dietsincluding feather meal. Materials and methods. The treatments were: a control diet and two dietswith feather meal (FM) treated with 50 or 100 g of NaOH/kg (5% inclusion) each. A random blockdesign was used. Feed consumption and weight gain were recorded every two weeks. Productiveperformance data was analyzed using the MIXED procedure of the SAS statistical program. Carcassyield was analyzed using the GLM procedure of the SAS statistical program. Results. Weight gain(WG), feed consumption (FC), carcass yield and composition were higher in turkeys fed with thecontrol diet, in comparison to those fed with FM diets (p<0.05). However, Turkeys fed diets with 100g NaOH/kg presented higher WG, FC, carcass yield and thigh weight (p<0.05) than turkeys fed dietswith 50 g NaOH/kg. Conclusions. The use of FM reduces the productive performance and carcassyield in turkeys. However, improvement on productivity and carcass yield were observed when FMtreatment with NaOH increased from 50 to 100 g/kg.


Subject(s)
Animals , Animal Feed , Feathers , Sodium Hydroxide , Turkeys
2.
Arq. bras. med. vet. zootec ; 64(6): 1707-1716, Dec. 2012. ilus, tab
Article in Portuguese | LILACS | ID: lil-660243

ABSTRACT

Foi avaliado o efeito da suplementação da glutamina em dietas contendo ingredientes de origem animal sobre o desempenho e a integridade intestinal de pintos de corte, criados até 21 dias de idade. Os tratamentos constituíram-se de combinações entre tipos de dieta, com ingredientes de origem vegetal ou vegetal+animal e suplementação de glutamina (0,0; 0,5; 1,0 e 2,0%). O delineamento foi em blocos ao acaso em arranjo fatorial 2x4, tipos de ração x percentagem de glutamina, com cinco repetições e 12 pintos por unidade experimental. Não houve efeito da interação tipo de dieta versus suplementação de glutamina sobre o desempenho, e os tratamentos não influenciaram o desempenho de pintos de corte. Houve efeito quadrático da suplementação de glutamina sobre o coeficiente de digestibilidade da proteína bruta. A suplementação com glutamina aumentou altura de vilos e profundidade de cripta no duodeno. A utilização de produtos de origem animal em dietas para pintos na fase inicial não prejudica o desempenho, e a inclusão de glutamina melhora a integridade intestinal.


The effect of glutamine supplementation in diets formulated with animal by-products on the performance and integrity of the small intestine of broiler chicks up to 21 days of age was evaluated. The treatments were the combination of types of diets (only with ingredients from a vegetal source or vegetal plus animal source) and levels of glutamine (0.0; 0.5; 1.0 and 2.0%). The experimental design was randomized blocks in a 2x4 factorial scheme (kinds of diets x levels of glutamine), with five replicates and 12 birds per experimental unit. No interaction between diets and glutamine supplementation and treatment effects on the performance traits were observed during the chick starter phase. There was a quadratic effect of glutamine on the crude protein digestibility coefficient. Birds supplemented with glutamine diets showed higher villus height and crypt depth in the duodenum. Broiler diets formulated with animal ingredients have no effect on chick performance during the initial phase, and glutamine supplementation improved the small intestine integrity.


Subject(s)
Animals , Dietary Supplements , Glutamine/adverse effects , Amino Acids , Birds , Flour/analysis , Plants/adverse effects
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