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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 The issue of antibiotics-resistance on animals has raised the concerns of meat safety and human health. The banning of antibiotics- growth promoter in animal feed was announced in EU in 2006. Other countries are starting to follow the regulation to comply with the compulsory withdrawal periods to ensure ‘antibiotics-free’ products. During the ‘antibiotics withdrawal periods’ of livestock, though biosecurity and vaccination program of poultry...
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Abstract
A battery study was conducted to evaluate the efficacy of phytase superdosing in improving growth performance, pancreatic response, and nutrient digestibility of broilers with a high trypsin inhibitor model. There were 5 dietary treatments: positive control (PC), negative control 1 (NC1), NC1+ 1500 U/kg phytase, negative control 2 (NC2), and NC2 + 1500 U/kg phytase. In NC1 and NC2, the SBM was substituted with full fat extruded soybeans to target the trypsin...
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Conclusion The present study conducted at Schothorst Feed Research resulted in an average bioavailability of MHA-FA and diluted DLM65 of 65% and 61%, respectively compared to MetAMINO® considering the overall growth and carcass parameters. These results demonstrate that the relative bioavailability of MHA-FA is significantly lower than its active content of 88% and consistent with the 2018 EFSA scientific opinion of 66% on product basis (75% on equimolar...
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Three recent feeding studies confirm that supplying laying hens with adequate dosages of a methionine is necessary to optimize performance, but moreover, products of the methionine-hydroxy analog (liquid MHA-FA; MHA-Ca) are interchangeable with DL-methionine at a ratio of 100:65, without having any negative effect on egg production performance. Assessment of the relative bioavailability of MHA products should be reflected both in the respective dosages and in the purchase price of the...
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Thanks to its superior bioefficacy and efficient processing, dry crystalline methionine (DLM) significantly reduces operating costs. Our video shows why dry crystalline methionine (DLM) and its liquid counterpart MHA-FA have a different impact on your business....
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Introduction Egg production, as an industrial activity, is always aimed at improving efficiency in production and economy by benefiting from the genetic potential presented by the current strains of commercial egg-producing hens. However, a constant concern lies in good nutrition. Given this aspect, one should be careful with the reduction of crude protein in diets for poultry due to a reduction in potassium levels also caused by the decrease in the soybean meal amount (Murakami...
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Methionine, As we know very well is an essential amino acid meaning it is not required by the body and has to be supplemented from outside. Which means that a bird needs it from sources like feed which opens the doors of business for all those industries which produce methionine. If it would have been like other amino acids which are non-essential and produced by the body we certainly would not have been interested in its business and discussing about Herbal Methionine. Methionine is non...
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Introduction Broiler diets are commonly supplemented with dry DL-methionine (DL-Met; 99% active substance), liquid methionine hydroxy analogue-free acid (MHA-FA, 88% active substance) or dry methionine hydroxy analogue-calcium salt (MHA-Ca, 84% active substance). Several broiler trials have demonstrated that the relative bioavailability (RBA) of Met hydroxy analogue products (MHA-FA or MHA-Ca) is on average 65% in relation to DL-Met on product basis (Lemme et al., 2002;...
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Dr. M. Gopi (Central Avian Research Institute) explains the effects of these additives on body weight in broilers, and other benefits, during the 5th IHSIG Symposium on Poultry Intestinal Health in Bangkok, Thailand....
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Introduction L-carnitine (LC) is a naturally occurring and widely distributed in nature compound. It was discovered in 1905 in Liebig’s meat extracts, a popular ‘dietary supplement’ at that time, by Gulewitsch and Krimberg [1] who named the substance from the Latin word for flesh (“carnus”). Carnitine chemical structure was established in 1927 and its function was related to long-chain fatty...
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1. Introduction Meat-and-bone meal (MBM) is a potential source of protein, calcium and phosphorus in poultry diets for some parts of the world, including Australia, China and Southeast Asia. However, there are considerable variations in its protein quality and Ca and P concentrations. Ravindran et al. (2002) reported substantial variations in ash (13.0e56.5 g/100 g), crude protein (38.5e67.2 g/100 g), crude fat (4.3e15.3...
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Introduction Commercial poultry production is associated with various stresses responsible for decreasing productive and reproductive performance of growing chicks, breeders and commercial layers. A growing body of evidence shows that most of stresses in poultry production at the cellular level are associated with oxidative stress. Recently, a concept of the cellular antioxidant defense has been revised with special...
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Introduction The use of exogenous proteases in poultry diets has gained momentum during the last decade. The first commercial protease was introduced into the poultry feed market in the 1990s in combination with other enzymes, with the aim to increase the energy and protein digestibility of grain and oilseed meal based diets (Simbaya et al., 1996). A number of proteases are now...
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Introduction In recent years, several peer-reviewed papers have been published regarding the dLYS or other amino acid requirements of modern high-lean genotype broilers (Dozier et al., 2009a,b, 2010 and Everett et al., 2010). In addition, recommendations for nutrient levels at various phases and levels of broiler production have also been published (Tillman, 2007, 2008, 2010,...
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1. Introduction Primarily for the provision of energy density, grain sorghum is quite frequently included in rations for pigs, poultry and feed-lot cattle. However, in a recent meeting held by the Australian Feed Grain Partnership in December 2012, nutritionists from the three industries expressed concern about the efficiency of energy utilisation in animals offered sorghum-based diets. Essentially, the energy provided...
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INTRODUCTION The biogenic amines are biologically active compounds synthesized from amino acids. Feed-borne biogenic amines are most commonly synthesized by spoilage microorganisms and are usually considered to be potential toxins (Eggum et al. 1989). By-products that have undergone some degree of spoilage are generally considered to be the richest sources of biogenic amines. These would include meat and bone meal, blood...
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Soybean products are the most important source of dietary protein for poultry in the US and much of the world. Variation in protein quality among soy ingredients can occur due to processing. Full fat extruded soybeans (FFES) are an alternative to conventional solvent-extracted soybean meal (SBM), but may have higher levels of trypsin inhibitors (TI). The use of exogenous protease in poultry diets may improve amino acid digestibility and was evaluated in diets...
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Hello. Dear collegues , please help me with some information about Herbal methionine ( if you use this or you ever use this kind of product. I have in this moment in my storage 1000kg Methiomax from AlfaFacts ( contain andrographis paniculata 40%, ocimum sanctum 30% and azadirachta indica 30%) I took this product from curiosity. What do you know about this product : can be used for poultry and pigs as herbal methionine or not. Is allright to be used or can be...
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Ricardo Esquerra (Novus International)speaks about the profibability as affected by nutrients density and its economic model to calculate it. He also speaks about guidelines to optimize profitability when feeding HMTBA and says that broilers have a different dose-response when fed HTMBA vs DLM....
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The Schothorst Feed Research Institute, an independent private research and consultancy institute for animal nutrition, recently performed a trial to determine the effects of graded inclusion levels of added methionine in broilers. Recent works indicate that DL-Hydroxy Analogue of Methionine (HMTBa) and DL-Methionine (DL-Met) have a dose dependent equivalency with different asymptote values. The study aimed to confirm this equivalency by assessing the two sources...
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