Apparent digestibility and energy value of whole egg powder for broilers.

Resumo: Com a necessidade de buscar alimentos alternativos que visam baratear os custos na ração de frangos de corte e reaproveitar os resíduos de incubatório que compreendem material residual do processo de incubação, objetivou-se avaliar a digestibilidade e valor energético do ovo em pó desidratado para frangos de corte. Foram utilizados 300 frangos machos da linhagem COBB, distribuídos em delineamento experimental inteiramente casualizado, composto por dois tratamentos constituídos por cinco repetições, com três animais em cada repetição. O experimento foi composto por um tratamento controle (ração referência) e um tratamento composto por ração referência + 15% de ovo desidratado em pó. Foi utilizado o método de coleta total de excretas para realizar as análises. Nas avaliações foram constatadas 7,010Kcal/kg de energia metabolizável e coeficiente de digestibilidade da proteína bruta e da matéria seca de 86,81% e 72,17%, respectivamente, parâmetros estes que podem ser inclusos em tabelas compiladas de composição de alimentos para a alimentação das aves. Conclui-se que o Ovo em pó integral desidratado pode ser utilizado adequadamente na alimentação de frangos de corte, pois possui alto valor energético e boa digestibilidade, assim seguindo os parâmetros nutricionais descritos. Abstract: In the need to seek alternative feedstuffs that aim to reduce costs in broiler rations and the reuse of hatchery waste, It was aimed in this work to evaluate the digestibility and energetic value of dehydrated egg powder for broiler chicks. Three hundred male COBB broilers were used, the experimental design was completely randomized, consisting of two treatments, consisting of five replicates with three broilers in each replicate. Being, treatment A control, reference. And treatment B control, reference with 15% dehydrated egg powder. To perform the analyzes, the total excreta collection method was used. In the evaluations it was found 7.010Kcal / kg of metabolizable energy and digestibility coefficient of crude protein and dry matter of 86.81% and 72.17%, respectively. This data can be included in feedstuffs compositional nutrition tables for broiler feed. It can be concluded that dehydrated whole egg powder can be properly used in broiler feed because it has high energy value and good digestibility, thus following the nutritional parameters described above. Resumen: Con la necesidad de buscar alimentos alternativos que tengan como objetivo reducir los costos de alimentación de pollos de engorde y reutilizar los residuos de incubación que comprenden material residual del proceso de incubación, el objetivo fue evaluar la digestibilidad y el valor energético del huevo en polvo deshidratado para pollos de engorde. Se utilizaron 300 pollos de engorde COBB machos, distribuidos en un diseño completamente al azar, compuesto por dos tratamientos consistentes en cinco repeticiones, con tres animales en cada repetición. El experimento consistió en un tratamiento de control (dieta de referencia) y un tratamiento que consistía en una dieta de referencia + 15% de huevo en polvo deshidratado. El método de recolección total de excretas se utilizó para realizar los análisis. En las evaluaciones, se encontró que 7.010 Kcal / kg de energía metabolizable y coeficiente de digestibilidad de proteína cruda y materia seca eran 86.81% y 72.17%, respectivamente, siendo posible sua inclusión em tablas de composición de alimentos para aves. Se concluye que el huevo entero en polvo seco puede usarse adecuadamente en la alimentación del pollo de engorde, ya que tiene un alto valor energético y buena digestibilidad, siguiendo así los parámetros nutricionales descritos

Industrial egg residue as a calcium source in broiler feed: digestibility and growth performance.

Abstract: Industrial egg residue (IER) possesses substantial concentrations of calcium and crude protein. The objective of this study was to measure the digestibility and performance of broilers when IER was added to the feed. Four treatments were tested, which caused increasing replacement of calcitic limestone by IER (0, 35, 70 and 100%) during a 42-day production cycle. First, total bird excreta were collected from broilers with and without IER, and we determined dry matter digestibility, apparent metabolizable energy (AME), calcium, and nitrogen retention. The IER presented 7.5% of crude protein, 31% of calcium, 209 kcal/kg of AME and the digestibility coefficients for dry matter, crude protein, and calcium were calculated at 83.95%, 86.20%, and 67%, respectively. After the digestibility test, the effects of IER on performance, carcass and meat yield were evaluated. No significant differences between the treatments were found in terms of performance (weight gain, feed conversion, consumption, and mortality), and no differences were found in terms of carcass or meat yield. A linear decrease in the percentage of abdominal fat was observed with increasing inclusion of IER in feed. These findings suggest that IER can totally replace limestone (calcium carbonate) in broiler diets

Metabolizable energy value of crude glycerin and effects on broiler performance and carcass yield.

Abstract: Two experiments were carried out to determine the metabolizable energy of crude glycerin (CG) and to evaluate the effect of adding different levels of CG on broiler performance and yield of carcass and cuts. The first consisted of a metabolism assay using total excreta sampling method aiming to determine the apparent metabolizable energy corrected for nitrogen balance (AMEN). This assay was performed in two phases: 10?18 days (initial phase) and 25?33 days of age (growth phase). The broilers were alloted in a randomized design with two treatments (reference diet and reference diet + 80 g/kg of CG inclusion) and nine replications, with ten birds per cage. The AMEN was 2651 kcal/kg and 3013 kcal/kg, for the initial and growth phases, respectively. In the second experiment, 1600 Cobb 500 male broilers from 1 to 42 days were alloted in a randomized block experimental design, with 8 treatments and 8 replications of 25 birds per experimental unit, according to factorial arrangement (2 feed forms × 4 levels of CG: 0, 40, 80 and 120 g/kg). At 43 days of age, three birds from each cage were slaughtered to evaluate yield of carcass and cuts in each treatment. There was a quadratic effect (P 0.05). Carcass and cut weights presented quadratic behavior (P < 0.01), but regarding yield, only quadratic effect (P < 0.01) was observed for carcass, linear increase (P < 0.01) for wings and linear reduction (P < 0.01) for fat. Using CG improved weight gain. Up to 46.30 g/kg CG improved carcass yield and up to 120 g/kg reduced fat deposition