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Fiber in poultry nutrition
Dietary fiber (DF) was considered an antinutritional factor due to its adverse effects on feed intake and nutrient digestibility. However, with increasing evidence, scientists have found that DF has enormous impacts on the gastrointestinal tract (GIT) development, digestive physiology, including nutrient digestion, fermentation, and absorption processes of poultry. It may help maintain the small and large intestine’s integrity by strengthening mucosal structure and functions and increasing the population and diversity of commensal bacteria in the GIT. DF is composed of non-starch polysaccharides (NSP), oligosaccharides, and lignin that scape digestion and enzymatic hydrolysis. Increasing DF content benefits digestive physiology by stimulating GIT development and enzyme production. And the inclusion of fiber at a moderate level in diets also alters poultry growth performance. It improves gut health by modulating beneficial microbiota in the large intestine and enhancing immune functions.
INTRODUCTION The physical form of the diet is a tool to improve broiler live performance, especially feed efficiency. However coarse feed particles enhance gizzard function, which was referred to as the pacemarker of gut motility (Xu et al. 2015a, Xu et al. 2015b, Kheravi et al. 2017). Studies respect to particle size impact on health, digestive efficiency and broiler performance were developed more than 60 years ago (Pacheco et al. 2014, Xu et al. 2015a, Xu et al. 2015b)....
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Introduction Wheat and barley as alternative cereals can be successfully replaced with corn in poultry diets. These grains could locally grow in many areas of the world and have lower water requirements than corn (Ravindran et al. 1999; Lin et al . 2010). The major components of wheat and barley are starch and proteins, though they have considerable content of non-starch polysaccharides (NSP), derived from the cell walls (Olukosi et al . 2007;...
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Influence of low protein diets on performance and intestinal health
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INTRODUCTION The continued use of antibiotics in feed has led to the emergence of antibiotic-resistant pathogenic organisms, which is a major concern in the poultry industry (Diarra et al., 2007; Garcia-Migura et al., 2014; Roth et al., 2019). Therefore, the use of in-feed antibiotics has been reduced, and the identification of alternative strategies to antibiotics has become a primary research focus. Comparisons of alternatives to antibiotics on gastrointestinal health, shown...
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in this Interview, Alamanda Calvert, Research Manager, Poultry Specialist at Biomatrix International, points out the results of some field trials in birds using a multifaceted blend of natural ingredients allowing animals to effectively manage feed efficiency and overall growth.
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Supplementing poultry diets with xylanase partially depolymerizes the xylans present in the dietary cereals, reducing the number of sugars in the molecular chains. The resulting oligosaccharides can be selectively fermented by beneficial intestinal bacteria, resulting in improved nutrient utilization (De Maesschalck et al., 2015). The study aim was to investigate the production of xylo-oligosaccharides (XOS) in different batches of Australian wheat, in the presence or absence of xylanase....
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I. INTRODUCTION Metabolizable energy (ME), digestible amino acids (dAA) and available phosphorus (avP) are the largest and most expensive components in broiler diets, considerable fractions of which still pass through the digestive tract undigested and are lost via excretion (Ravindran et al., 2013), hence, emphasizing the need for higher nutrient usage efficiency than current practice. Ability of carbohydrases to degrade non-starch polysaccharides and liberate caged starch and...
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The influence of inclusion level of barley in wheat-based diets and supplementation of a multicomponent non-starch polysaccharide (NSP) degrading enzyme (Ronozyme® Multigrain) on growth performance and nutrient utilisation in broiler starter (d 0 to d 21) was evaluated. The activities of endo-1,4-β-glucanase, endo-1,3(4)-β-glucanase and endo-1,4-β-xylanase in enzyme were 800 BGU/g, 700 BGU/g and 2700 XU/g, respectively. Normal-starch (non-waxy) hulled barley (NSH) was...
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I. INTRODUCTION Improved FCR was observed in broiler chickens fed a slow digestible starch diet compared with a fast digestible starch diet (Weurding et al., 2001). Furthermore, Enting et al. (2005) indicated that a slow digestible starch diet fed to broiler chickens can spare amino acids (AA). Finally, Liu et al. (2017) and Truong et al. (2017) concluded that starch digestion kinetics play a role in broiler performance, but that protein digestion kinetics may be more important...
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Comment réduire la salmonelle et son impact dans l'industrie de la volaille
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I. INTRODUCTION Xylanases have been used in the poultry industry for 30 years, initially to improve litter quality in wheat-based diets but later to also improve performance or reduce costs in wheat, corn, sorghum and barley based diets. It is widely accepted that these benefits are the result of the enzyme partly degrading the insoluble cell wall arabinoxylans to release the enclosed nutrients and the soluble arabinoxylans to reduce digesta viscosity, hence improving nutrient...
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Fermentation products with main and side activities Feed enzymes are mostly produced by fungi or bacteria. Those living organisms produce a wide variety of different enzyme proteins. For commercial practice, only a limited number of those activities is assayed in the laboratory. Assaying e.g. the xylanase activity obviously results in a quantification of the xylanase level, while not providing information about other activities that remain present in the fermentation product. In...
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Introduction
This congress takes place in a typical corn-soya-region of the world, which means that corn and soya are the basic raw materials for all type of poultry feed. But in a lot of countries we see much more and different raw materials being used in poultry nutrition and especially in those diets for layer breeds in rearing and production. There is no doubt that especially layers perform very well with...
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INTRODUCTION Minerals are needed for all normal life processes and the physiological importance of minerals for farm animals, including poultry, is well documented (Spears, 1999; Underwood and Suttle, 1999). Recommendations for mineral requirements of poultry are available (NRC, 1994), but these are based on research with older strains and are inadequate and outdated for modern strains of poultry (Leeson, 2005). Despite the biological and economic importance, published data on...
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1. Generalities Gastrointestinal infections with pathogenic bacteria y the subsequent clinical expression of disease occur frequently in young animals under current intensive production systems. Infections are responsible growth rates and consequently cause economic losses in animal production. Antibiotics modify the microflora of the gastrointestinal tract (GIT) and are the main available tool to prevent and treat...
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