Growth performance, gastrointestinal weight, microbial metabolites and apparent retention of components in broiler chickens fed up to 11% rice bran in a corn-soybean meal diet without or with a multi-enzyme supplement

Abstract

We investigated the effects of adding up to 11% rice bran (RB) in corn-soybean meal diets fed to broiler chickens without or with a multi-enzyme supplement (MES). The MES supplied xylanase, β-glucanase, invertase, protease, cellulase, α-amylase and mannanase with targeted activity of 2,500, 300, 700, 10,000, 1,200, 24,000, and 20 U/kg of feed, respectively. The study used a two-phase feeding program (starter, d 0 to 24; finisher, d 25 to 35) with RB added at 5% and 11%, respectively creating 4 diets in each phase. Diets were iso-caloric and iso-nitrogenous and contained phytase (500 FTU/kg) and TiO 2 as a digestibility marker. Three hundred and sixty d-old male Ross 708 broiler chicks were placed in cages based on BW (15 birds/cage) and allocated to 4 diets ( n = 6). Birds had free access to feed and water. Body weight and feed intake were recorded. Excreta samples were collected 3 d prior to the end of each phase for apparent retention (AR) of components. Samples of birds were sacrificed on d 24 and 35 for gut weight and ceca digesta for organic acid content. There was no interaction ( P > 0.10) between RB and MES on BWG and FCR in starter or finisher phase. In finisher phase, birds fed MES had better BWG (961 versus 858 g) and FCR (1.69 versus 1.86) than birds fed non-MES diets ( P < 0.01). Feeding RB reduced ( P = 0.02) BWG in finisher phase resulting in lower d 35 BW. Birds fed RB had higher ( P ≤ 0.01) gizzard weight on d 24 and 35 than non-RB birds. An interaction ( P ≤ 0.01) between RB and MES on concentrations of propionic and iso-butyric acids in ceca digesta showed that MES reduced these acids in non-RB diet. The AR of gross energy was higher ( P < 0.02) for MES versus non-MES birds in starter and finisher phases. In conclusion, independently, RB increased gizzard weight and reduced final BW whereas MES improved growth and energy utilization.

Impact of fiber on growth, plasma, gastrointestinal and excreta attributes in broiler chickens and turkey poults fed corn- or wheat-based diets with or without multienzyme supplement

“…Although, the insoluble and soluble components of the diets were not analyzed in the current study, the data suggested that the wheat used could have had low-NSP concentration compared to other studies. This can be further backed up by the lower gizzard weights in turkeys fed wheat-based diets as it is well established that dietary NSP increases gizzard weight ( Hetland and Svihus, 2001 ; Hetland et al., 2003a ; Amerah et al., 2009 ; Sanchez et al., 2019 ).…”

A New Approach for the Production of Selenium-Enriched and Probiotic Yeast Biomass from Agro-Industrial by-Products in a Stirred-Tank Bioreactor

“…Xylose, arabinose, and phenolic compounds have been found in both CBAH (corn bran acid hydrolysate) and SBAH (soybean bran acid hydrolysate). The presence of pentose sugars is due to the hemicellulosic fraction in brans [ 37 ] and phenolic compounds are possibly from the lignin fraction since this macromolecule is found in some starchy by-products composition [ 38 ] and, besides, brans may contain husks from the manufacturing process. Furthermore, hemicellulose corresponds to 15–35% of plant structure and it is mainly composed of pentoses such as xylose [ 39 ].…”

“…Lee et al [ 35 ] reported xylose as the main released sugar, followed by glucose and arabinose, in destarched corn bran hydrolysate after enzymatic pretreatment using cellulolytic and hemicellulolytic enzymes. Sanchez et al [ 38 ] reported the presence of hemicellulosic sugars and lignin in rice bran. Probst and Vadlani [ 40 ] found 25.8% hemicellulose and 1.4% lignin in corn bran, being xylose the major sugar in hemicellulosic fraction.…”

“…Besides, starchy biomass has a complex composition and it is composed of a wide range of mono- and oligosaccharides, starch, fibers, sucrose, fatty acids, protein, minerals, ashes, etc. [ 36 , 38 , 40 , 41 , 42 , 52 , 53 ]. Therefore, hydrolysates from agro-industrial by-products are complex media and may contain complex carbohydrates and other carbon sources, as well as a wide range of mineral content.…”

Current Trends of Rice Milling Byproducts for Agricultural Applications and Alternative Food Production Systems

“…The milling process is important because it improves the nutritional, cook time, and sensory characteristics of rice (Dhankhar, 2014). Being able to utilize these byproducts in alternative industries would, therefore, improve the yield and sustainability of rice production (Sanchez et al, 2018).…”