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Enzymes in poultry nutrition
Enzymes are proteins involved in all anabolic and catabolic pathways of digestion and metabolism. Digestive enzymes are categorised as endogenous or exogenous. Endogenous enzymes are produced by the animal and exogenous enzymes are administered from outside. Enzyme supplementation decreases nutrient loss through excreta, reduces diets nutritional levels, improves nutrient availability; thus, enhances production efficiency and profitability. In addition, exogenous enzymes hydrolyse non-starch polysaccharides, increase the usage of feed energy, reduce negative impacts of non-digestive residues on digesta viscosity, and improve gut microbial ecosystem. Cellulase, glucanase, pectinase, xylanase, galactisidases, phytase, non-starch polysaccharides degrading enzymes, amylase, lipase, cellulase, and protease are the most common enzymes used in poultry feed.
Introduction Chronic heat stress (HS) is a great concern in all types of poultry especially broiler chickens. Reductions of feed intake (Teeter ., 1985) and lower growth rate as well as reduction in feed efficiency (Geraert ., 1996) have been reported in poultry under HS condition (Ramnath., 2008). Birds attempt to compensate for their reduced ability to dissipate heat during heat distress by increasing their physiological processes (such as, elevated body temperature, panting...
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Introduction. The use of exogenous enzymes directed to the hydrolysis of non-starch polysaccharide (NSP) to increase the extraction of available nutrients is an effective strategy to increase the economic benefits even from highly digestible feedstuffs. The NSP in the cell wall of the cereal grains such as corn is complex and differ in their composition and properties. To ensure maximum profits from exogenous enzymes it is necessary to evaluate...
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Corn kernel hardness is an important agronomic trait that could be affected by environmental conditions and post-harvest practices such as drying and storage. This dissertation discuss current literature related to corn variability factors and original research showing the effects of two corn hybrids varying in endosperm hardness (average vs. hard) and three post-harvest drying temperatures (35, 80, and 120°C) on corn nutritional composition, geometric mean (dgw) and standard deviation...
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Peter Chrystal (Baiada) gave a presentation on different tests, models and tools to better analyze feed formulation and poultry nutrition, during the Latin American Poultry Congress in Lima, Peru....
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Introduction Heat stress is one of the major problems of poultry in heat areas of the world including Iran, especially in summer, leading to reduced performance, the production, feed intake, growth rates and effective use of the feed (Sahin ., 2009). In general, birds have a thermal comfort zone, which ranges between 18 to 22 ° C and no problem for the physiological regulation of body temperature in this range will. Birds lack sweat glands, increase in...
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I. INTRODUCTION In order to improve production, nutritionists endeavor to increase digestibility, availability of nutrients in the diet and to obtain more product consumed per unit feed, and therefore they consider total nutrient intake and retention as well as waste output. Although poultry is highly efficient in converting feed to egg or body gain, the presence of components such as antinutritional factors and indigestible nutrients in the feed may reduce production...
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Mycotoxin Testing in the Feed Chain: A Risk Prevention Strategy for Raw Material Suppliers, Grain Storage Facilities and Processors, and Feed Manufacturers
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ABSTRACT The objective of the present study was to evaluate the effect of bile acids derived from swine on the growth performance, carcass traits, serum lipid metabolites and intestinal enzyme activities in broiler chickens. Four hundred thirty-two 1-day-old Arbor Acres male broilers were randomly assigned to 4 treatments with 6 replicates of 18 chicks each for 42 d. The experimental treatments received a corn-soybean basal diet containing lard and were as follows: 0 (control),...
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Sofia Zenagui, Global Feed Digestibility Marketing Manager at Adisseo, points out the key features of Rovabio®, a range of enzyme solutions that improves the digestibility of feedstuffs from vegetal origin for animals, poultry and swine, during ESPN 2019
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Introduction Broiler diets consist basically of plant-derived ingredients. These feeds are characterized by having a large part of phosphorus in the form of phytate (Rostagno et al., 2011), which is poorly hydrolyzed by monogastric animals (Ravindran et al., 1995), which do not have a significant activity of enzymes such as phytase throughout the gastrointestinal tract. However, in addition to complexing with phosphorus, the phytate molecule is also able to bind to other...
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Kristjan Bregendahl (Devenish Nutrition) discussed amino acid profile studies and ratio estimations, during the Multi-State Poultry Feeding and Nutrition Conference in Indianapolis, USA....
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Mike Persia (Virginia Tech) explained his research on amino acid requirements -particularly tryptophan and valine- and egg quality, during the Multi-State Poultry Feeding and Nutrition Conference in Indianapolis, USA. ...
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INTRODUCTION Aflatoxin is the common name for a group of chemically related compounds (Moss, 1996) produced by certain strains of Aspergillus flavus and A. parasiticus in the feedstuffs as poisonous secondary metabolites. Aflatoxins are stable once formed in grain and are not degraded during normal milling and storage process (Brown, 1996) and have been demonstrated to be carcinogenic, mutagenic and teratogenic (Cole and Cox, 1981). It impairs humoral and cellular immune...
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Do you need more amino acids value from your ingredients?” CIBENZA® EP150 is the first feed additive of protease with spores of its production organism, Bacillus licheniformis, authorized in the European Union (4d12)....
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Introduction Chronic heat stress (HS) is a great concern in all types of poultry production. Feed consumption, growth rate, mortality, and other important traits are adversely affected by severe HS. Reduction of feed intake in order to reduce metabolic heat production (Teeter ., 1985) and lower growth rate as well as a reduction in feed efficiency (Geraert ., 1996). Have been reported in poultry under heat stress condition. Heat stress stimulates the release...
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The growth graph of Animal Feed Enzymes Market is forecast to display an upward trend over the coming years, owing to the growing consumer preference for nutritious diet along with a substantial rise in the disposable incomes across emerging economies. According to the OECD (Organization for Economic Co-operation and Development), the average meat intake per individual across the globe is nearly 75 pounds in a year. This figure is an indication of the growing...
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On June 18, 2019, and following the scheduled two-year construction period, Evonik officially commissioned its second complex for the production of MetAMINO® (DL-methionine) and strategically important precursors in...
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Dr. Vivek Kuttappan, research scientist at Novus International, explains how intestinal lesions and mortality in broiler birds under necrotic enteritis challenge can be reduced using an essential oil based eubiotic product, during the annual International Poultry Scientific Forum (IPSF) at IPPE 2019.
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This study was conducted to determine the standardized ileal digestibility (SID) of amino acids (AA) in hydrolyzed feather meal (HFM), flash dried poultry protein (FDPP), poultry meal (PM), and meat and bone meal (MBM) fed to broiler chickens and pigs. Four semi-purified diets and a nitrogen-free diet were prepared. Experiment 1 was conducted with 416 male broiler chickens [initial body weight (BW) = 705 ± 100.0 g] at d 18 post-hatching in a randomized complete block design. Birds...
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INTRODUCTION Sub-therapeutic levels of antibiotics have been used in feed as growth promoters (AGP) in poultry and other species in an attempt to control enteric diseases and improve feed conversion since the 1940s. However, the indiscriminate use of AGPs in production animals has resulted in the emergence of antibiotic-resistant pathogens, which has serious human health implications. With the recent FDA guidance to voluntarily reduce antibiotics for the use of growth promotion,...
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Selsaf®3000 is a natural source of organic selenium for all species of animals (pigs, poultry, dairy, aquaculture…) The main compounds of Selsaf®3000 are L-selenomethionine and L-selenocysteine. L-selenomethionine is incorporated into body proteins as the main selenium storage, and used as a precursor to L-selenocysteine. L-selenocysteine plays an essential role against oxidative stress as a key element ensuring the activity of the antioxidant enzyme glutathione peroxidase....
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