Effect of different levels of whole corn germ on energy values and ileal digestibility in broilers

• Published in: Anais da Academia Brasileira de Ciências Vol. 96; no. 3; p. e20230078
• Main Authors: Lopes, Elainy Cristina, Rabello, Carlos B V, Macambira, Gabriel M, Santos, Marcos José B Dos, Lopes, Cláudia C, Oliveira, Camilla R C DE, Silva, Jaqueline DE Cássia R DA, Silva, Bruno A, Nascimento, Júlio Cézar S, Ribeiro, Apolônio G, Silva, Dayane A DA
• Format: Journal Article
• Language: English; Portuguese
• Published: Brazil Academia Brasileira de Ciências 01.01.2024
• Subjects: Animal Feed - analysis; Animal Nutritional Physiological Phenomena - physiology; Animals; Chickens; corn by-product; Diet - veterinary; Digestion - physiology; Energy Metabolism - physiology; ether extract; ileal digestibility; Ileum - metabolism; Ileum - physiology; Male; metabolizable energy; MULTIDISCIPLINARY SCIENCES; Random Allocation; stationary point; Zea mays - chemistry; corn by-product; metabolizable energy; ileal digestibility; ether extract; stationary point
• ISSN: 1678-2690; 1678-2690
• DOI: 10.1590/0001-3765202420230078

This study evaluated the effects of broiler age (A) and levels of replacement (L) of control diet (CD) on the utilization of energy and nutrients of whole corn germ. 720 one-day-old broilers (b) were allocated at completely randomized design to six treatments and six replicates, in three assays: pre-starter (1-8 days, 10 b/cage), starter (15-22 days, 6 b/cage), and grower (28-35 days, 4 b/cage) phases. The treatments were: CD and four test diets (L): 100, 150, 200, 250, or 300 g kg-1 of the CD replaced by WCG levels. The data were adjusted to the response surface model. The stationary points for apparent energy metabolizable (AME) and AME corrected for nitrogen balance (AMEn) were: 4173 and 3591 kcal kg-1, respectively, and coefficients of gross energy (AMCGE), crude protein (AMCCP), dry matter (AMCDM), and ether extract (AMCEE) were: 49.3, 40.4, 72.6, and 61.3%, respectively; and Ileal digestibility coefficient of crude protein (IDCCP), dry matter (IDCDM), digestibility crude protein values (DCP), and digestibility dry matter value (DDM) were: 78.0, 57.96, 8.50, and 56.17%, respectively. The EP for AMEn was at 18 days of age, 28 g kg-1 WCG. There was a correlation between A and L on digestibility and metabolisability of nutrient's WCG.