Chemical composition and metabolizable energy values of corn germ meal obtained by wet milling for layers

Abstract

An experiment was carried out to determine the chemical composition, metabolizable energy values, and coefficients of nutrient digestibility of corn germ meal for layers. The chemical composition of corn germ meal was determined, and then a metabolism assay was performed to determine its apparent metabolizable energy (AME) and apparent metabolizable energy corrected for nitrogen (AMEn) values and its dry matter and gross energy apparent metabolizability coefficients (CAMDM and CAMGE, respectively). In the 8-day assay (four days of adaptation and four days of total excreta collection), 60 29-week-old white Lohman LSL layers were used. A completely randomized experimental design, with three treatments with five replicates of four birds each, was applied. Treatments consisted of a reference diet and two test diets, containing 20 or 30% corn germ meal. Results were submitted to analysis of variance and means were compared by the Tukey tests at 5% probability level. The chemical composition of corn germ meal was: 96.39% dry matter, 49.48% ether extract, 1.87% ashes, 7243 kcal gross energy/kg, 11.48% protein, 0.19% methionine, 0.21% cystine, 0.48% lysine, 0.40% threonine, 0.72% arginine, 0.35% isoleucine, 0.83% leucine, 0.57% valine, and 0.37% histidine, on as-fed basis. There were no statistical differences in AME, AMEn, CAMDM, and CAMGE values with the inclusion of 20 and 30% corn germ meal in the diets. On dry matter basis, AME, AMEn, CAMDM, and CAMGE values of corn germ meal were: 4,578 and 4,548 kcal/kg, 4,723 and 4,372 kcal/kg, 64.95 and 61.86%, respectively.

Energy values of corn germ meal for laying hens

“…Na Figura 2 observa-se também que coeficientes de metabolização da matéria seca entre os métodos foram semelhantes. Albuquerque et al (2014), utilizando GIM para poedeiras, isolados pelo método de Matterson et al (1965), determinou valores de 4,715 e 4,723 kcal g -1 para EMA e EMAn com nível de 20% de substituição e para o nível de 30%, os valores foram 4,441 e 4,372 kcal g -1 , respectivamente.…”

“…Aplicando-se o método da regressão nos resultados de Albuquerque et al (2014), apenas para os valores de EMAn das rações (0%, Y = 3,155 kcal g . Este valor é semelhante ao obtido na presente pesquisa (5,094 kcal/g), portanto, o método da regressão pode ser mais uma ferramenta para auxiliar nas interpretações dos resultados obtidos nas pesquisas, desde que os ensaios tenham o delineamento necessário para aplicá-lo.…”

Performance and carcass characteristics of broilers fed whole corn germ

“…Among the compounds present in WCG, ether extract (EE) is present at concentrations ranging from 470.7 to 598.2 g kg −1 (Ciurescu, 2008;Lima, 2008;Lima et al, 2012;Albuquerque et al, 2014;Lima et al, 2016), which characterizes WCG as a high-energy feedstuff. It also contains high levels of gross energy (GE), which may vary from 7,039 (Albuquerque et al, 2014) to 7,243 kcal/kg (Lima et al, 2012) and apparent metabolizable energy content for broilers of 4,157 kcal/kg (Lima, 2008). Therefore, this ingredient may partially replace corn and soybean meal in the diet of those animals (Ciurescu et al, 2014).…”

Inclusão De Farelo De Goiaba Na Dieta De Codornas Européias

“…A investigação de novas tecnologias tem promovido de forma significativa o desenvolvimento da produtividade da indústria avícola. Em particular, estudos sobre alimentos alternativos permitiram a redução considerável nos custos de produção (2) e, assim, têm contribuído com a redução da poluição ambiental. Em rações para aves, o milho é a principal fonte energética, enquanto o farelo de soja é a principal fonte proteíca e esses alimentos têm a maior parcela do custo total das rações.…”