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Amino acids in poultry nutrition
Adequate provision of dietary amino acids is required to maintain normal immunocompetence and protection of the host from some diseases in all species (Beski et al. 2015). Therefore, the development of immune function in poultry will be promoted if they receive sufficient amino acids in their diets. The essential amino acids for poultry are arginine, glycine, histidine, leucine, isoleucine, lysine, methionine, cystine, phenylalanine, threonine, tryptophan, and valine. Out of these, the ones critical in practical diets are arginine, lysine, methionine, cystine and tryptophan.
Introduction Barley ranks fourth in global cereal production after corn, wheat and rice. About 65% of the world’s barley produced is fed to animals, including poultry. Australia is a significant global producer of barley, ranking in the top five countries with about 5% of global production and is among the top three barley exporters accounting for about 30% of malt and 20% of feed barley trade. Australia is a reliable supplier of two row...
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I. INTRODUCTION Globally, maize and wheat are the major cereal grains used in broiler feed. Maize is predominant in Asia and the Americas, whereas wheat is in Australia, New Zealand and Europe. Extensive research has been undertaken in refining dietary strategies to optimise broiler performance when offered reduced crude protein (CP) diets. In feed, these grains have been optimized by the inclusion of feed enzymes and unbound (crystalline or synthetic) amino acids. Reduced CP...
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The aim of this study was to evaluate the effect of a yeast extract supplemented in feed and a vitamins-aminoacids compound in the drinking water on the performance and microbiology count of broiler chickens. A 42- day experiment was carried out and replicated twice in time at Universidad ISA. In each experiment, 240 straight run day-old chicks were randomly distributed in 4 treatments of a Completely Randomized Design with a factorial arrangement. The 4 treatments were from the combination...
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During the process of digestion and absorption of ingested feed in poultry, significant losses of endogenous amino acids (EAA) occur from various digestive secretions, mucoproteins and the epithelial cells lining the gastrointestinal tract (GIT). Several factors such as the development of GIT and changes in dry matter intake (DMI) with advancing age, type of bird, method of euthanasia and ileal digesta collection may influence EAA loss. Correction for these inevitable losses is necessary to...
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I. INTRODUCTION Knowledge on the digestibility of amino acids (AA) in raw materials is crucial for precise feed formulation, and for more efficient and sustainable use of feed resources. The accuracy of excreta-based digestibility measurements for determining N and AA digestibility may be questionable, due to the variable effects of the caecal microflora on dietary protein utilisation and the contribution of...
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Martin Smith, Technical Service Director Middle East Africa at Evonik Animal Nutrition, introduces Evonik’s solution GuanAMINO®, which supplies creatine in the best way to your animals, improving their performance leading to optimized production costs and profitability.
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Mohammed Mouhafid, Regional Technical Manager for Africa at AlzChem, points out the negative effects of Heat Stress and How Creamino® reduces the negative impact of this issue in poultry....
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Fats and oils are widely used in poultry diets as a source of energy and to increase palatability. Increasing dietary fat level has been reported to improve the apparent ileal digestibility of amino acids (Cowieson and Ravindran, 2008). These improvements may be related, in part, to reduced endogenous amino acid (EAA) losses, but the influence of dietary fat on EAA losses has not been studied in chickens. The present study was carried out to measure the basal EAA losses in male broilers...
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I. INTRODUCTION Interactions among the branched-chain amino acids (BCAA) have long been observed in poultry (D’Mello and Lewis, 1970; Tuttle and Balloun, 1976; Mendonca and Jensen, 1989), but their effects on broiler performance have been contested with various researchers reporting no effects of BCAA interactions on broiler performance in practical diets (Burnham et al., 1992; Barbour and Latshaw, 1992; Waldroup et al., 2002)....
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Barley ranks fourth in global cereal production after corn, wheat and rice. About 65% of the world’s barley produced is fed to animals, including poultry. Australia is a significant global producer of barley, ranking in the top 5 countries with about 5% of global production and is among the top 3 barley exporters accounting for about 30% of malt and 20% of feed barley trade. Australia is a reliable supplier of two-row spring barley that is suitable for a wide range of malting, brewing...
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Calculating a proper stocking density will determine the maximum farm profitability in broiler chickens. Choosing the stocking density implies knowing the impacts on live performance, and its interrelations with the environment and dietary nutrients. Abundant studies about stocking density run under non-commercial conditions might not indicate the best reliable information to know the farm profitability. As a result, few studies are reliable for commercial purposes. Poultry managers should...
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What if we can enrich the embryo already with a quickly available energy source to better secure hatching and the first days in the life? This is possible by feeding the broiler breeder hen with a source of creatine. Creatine might ring a bell to many, as taking creatine as a supplement is very popular among athletes to gain muscle, enhance strength and improve exercise performance. Creatine gives muscle cells the capacity to produce more energy by recycling energy poor...
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Effect of <i>Cordyceps militaris </i> Hot Water Extract on Immunomodulation-associated Gene Expression in Broilers, Gallus gallus (Extract)
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It could be argued that animal nutrition as a global industry really kicked off when the idea of selling supplements to better balance out the nutritional values of feedstuffs began. Clearly, it was a landmark...
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Introduction In practice, an optimisation program is used to formulate commercial diets to meet the minimum nutrient constraints in order to minimise feed costs. With phytase, potentially unjustifiable high contributions will result in reduction of safety margins or even lead to nutrient and energy deficiencies with a negative impact on animal performance. When applying values, it is important to understand that it is not possible to compare matrices from different phytases...
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Ph.D. José Rivera Ulloa, Technical Sales Manager – LATAM at Alzchem, points out the role of Creatine and its role in animal Nutrition, some benefits of Creamino® in poultry nutrition and more......
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Poultry feed contains major ingredient i.e., soybean meal as the principal source of protein. Soybean meal is the dominant protein supplement used in poultry diets & also has an excellent amino acid profile the primary protein source in poultry diets. In recent years most producers are looking for alternate protein sources of soybean due to skyrocketing of the commodity. There are some alternative protein sources which have been used by poultry/feed producers as a...
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Introduction Modern meat chicken breeding stock have been selected for extremely efficient conversion of feed into protein and rapid growth. As a result, it has become increasingly more difficult to rear pullets and breeders to achieve the healthy chick numbers needed to supply the ever-expanding poultry meat market. There are many factors involved in producing a healthy pullet and breeder chicken. These include; housing, lighting, temperature and air control, health,...
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Adisseo several studies have shown that the addition of a liquid source of methionine (OH-Methionine) may lead to power savings of up to 13% compared to the powder form (DL-Methionine) when pelleting. This conclusion on the beneficial impact of liquid methionine was obtained in two trials conducted in TECALIMAN, the French technical center for Feed, in their pilot pellet mill (2016 and 2020). Theses tests assess the pelleting behavior of complete feed by varying formula and...
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Introduction Genetic companies using new advances in genetic engineering are working to achieve high-persistence brown and white egg layer hybrids capable of producing more than 500 eggs in a 100-week lay and molt-free period. 1-The quality of the shell is the main reason for a producer to discard a flock of layer. 2-The posture drop is the second. - The most important nutritional strategy is bone health during rearing and all production through the...
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Introduction Sorghum ranks fifth in global cereal production after corn, wheat, rice and barley. Most of the world’s sorghum grain is fed to animals, including poultry, but it is also used for food (Africa) and alcohol (ethanol, beer in Africa and baijiu in China). World sorghum production for the last 5 years averaged about 63 million metric tonne (Mmt), the USA being the largest producer (about 12 Mmt or 18% of world production). Australian production averaged...
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