Protease supplementation in maize-based diet influenced net energy and nutrient digestibility in broilers
Open Access
- 13 August 2021
- journal article
- Published by Brill in Journal of Applied Animal Nutrition
- Vol. 9 (2), 85-91
- https://doi.org/10.3920/jaan2021.0007
Abstract
This experiment evaluated the effects of supplemental protease in maize-based diets formulated with reduced density of digestible amino acids (dAA) on net energy (NE) utilisation and nutrient digestibility in broilers. A total of 312, one-day-old, male broilers (Ross 308) were randomly distributed into 24 floor pens and fed one of three treatments, with eight pen replicates per treatment throughout the starter (1 to 14 d of age) and grower (15 to 28 d of age) phases. Dietary treatments consisted of a positive control (PC) reference diet, a negative control diet (NC; dAA density 60 g/kg less than PC diet), and a NC diet with supplemental protease (200 mg/kg). All diets contained supplemental phytase (200 mg/kg) and xylanase (200 mg/kg). The reduction in dAA density between the PC and NC did not affect (P>0.05) NE, but protease supplementation in the NC diet increased (P0.05) affect nitrogen, starch, or DE in the jejunum or ileum. Likewise, no differences (P>0.05) in jejunal (nitrogen, starch, and DE) and ileal (starch and DE) digestibility values were observed between those offered the NC diets without or with protease, but a small difference (P<0.05) in ileal nitrogen digestibility was observed.Keywords
This publication has 23 references indexed in Scilit:
- Protease supplementation of sorghum-based broiler diets enhances amino acid digestibility coefficients in four small intestinal sites and accelerates their rates of digestionAnimal Feed Science and Technology, 2013
- Maintenance Energy Requirements of Growing Pigs and Calves Are Influenced by Feeding LevelJournal of Nutrition, 2011
- Effect of inclusion of cellulose in the diet on the inevitable endogenous amino acid losses in the ileum of broiler chickenPoultry Science, 2009
- Review: Energy partitioning in broiler chickensCanadian Journal of Animal Science, 2008
- Live Performance, Water Intake and Excreta Characteristics of Broilers Fed All Vegetable Diets Based on Corn and Soybean MealInternational Journal of Poultry Science, 2005
- Determination of titanium dioxide added as an inert marker in chicken digestibility studiesAnimal Feed Science and Technology, 1996
- Effect of age and exogenous amylase and protease on development of the digestive tract, pancreatic enzyme activities and digestibility of nutrients in young meat-type chicksReproduction Nutrition Development, 1995
- Rate of Passage of Barley Diets with Chromium Oxide: Influence of Age and Poultry Strain and Effect of β-Glucanase SupplementationPoultry Science, 1994
- Effective energy: a concept of energy utilization applied across speciesBritish Journal of Nutrition, 1994
- Performance of Broiler Chickens and Turkey Poults Subjected to Feed Restriction or to Feeding of Low-Protein or Low-Sodium Diets at an Early AgePoultry Science, 1990