Explore all the information on
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 Over the years, nutritionists have studied several ways to determine the ideal dietary supply of essential amino acids to optimize poultry performance. However, considering only performance objectives without taking into account economic factors may not reflect maximum profitability, since optimizing performance is not always viable (Pack et al., 2003). An economic approach to determine amino acid supply by minimizing feeding costs and maximizing revenues was...
Comments : 5
Recommendations: 2
It has been proposed that the metabolic energy requirements of free-ranging hens are up to 15% higher compared to caged hens due to the increased metabolic activity required for locomotion and thermoregulation (GfE 1999; Tiller 2001; Aerni et al. 2005). The aim of the study was to investigate the impact of various feed strategies on laying performance and egg quality of free-range laying hens. A total of 9,375 hens, placed amongst 5 flocks of 40,000 hens each were selected according to their...
Comments : 0
Recommendations: 0
Speculation over the Provisional Ruling on Anti-dumping Duties of Lysine by the EU Against China
Suggested link
1. Introduction The mucosal lining of the small intestine is a highly functional epithelium comprised of absorptive, secretive and sensory cells, which are constantly renewed by multipotent intestinal stem cells (ISC). ISC reside within crypts, and constantly proliferate for self-renewal and generation of progenitor cells, which differentiate into the functional cells that line lumen-facing villi (Carulli et al., 2014; Potten and Loeffler, 1990). Compartmentalization of the...
Comments : 0
Recommendations: 0
Hypothesis Guanidinoacetic acid (GAA) is synthesized in the liver and kidneys from arginine (Arg) and glycine (Gly) and subsequently methylated by S-adenosylmethione to creatine (2). Heat-stressed birds respond to the presence of higher uric acid concentration and changes in electrolyte balance by increasing the usage of osmoprotectants. These osmolytes are viable endogenous precursors for Gly (3). On the other hand, high supplemental lysine level on modern genetic broiler...
Comments : 2
Recommendations: 1
INTRODUCTION Least cost feed formulation relies on the assumption of additivity of digestible nutrients from the contributing ingredients. It is generally accepted that assessment of the nutritional value of individual raw materials underestimates their eventual contribution in a complex diet because of the often-substantial influence of endogenous loss. The premise is that a proportion of nutrients that leave the terminal ileum are inevitable (or “basal”) losses and...
Comments : 0
Recommendations: 2
1 INTRODUCTION During the last decades, the productivity of laying hens has improved significantly, with higher number of eggs produced over the laying cycle and higher efficiency to utilize feed nutrients. This increase in productivity implies in a change in the requirements, and consequently, these hens become more demanding in nutrients, mainly amino acids (Elliot, 2008). Optimization of protein supply by understanding the amino acid needs of these hens requires a thorough...
Comments : 1
Recommendations: 1
.jpg&w=3840&q=75)
INTRODUCTION Amino acids (AA) and crude protein (CP) intake during the rearing phase in broiler breeders have demonstrated to affect body composition and reproductive performance in the laying period (Joseph et al., 2000; Ciacciariello and Tyler, 2013; van Emous et al., 2013, 2015a, 2015b). Modifications of these nutrients added up to the adjustment of feed allocation may alter BW (van Emous et al., 2013; Soumeh et al., 2018), organ development (Lesuisse et al., 2017), egg...
Comments : 1
Recommendations: 0
.jpg&w=3840&q=75)
INTRODUCTION Dietary amino acids (AA) and crude protein (CP) have been demonstrated to affect BW, body composition, organ development, and feathering in broiler breeder pullets (Hudson et al., 2000; Ekmay, 2011; van Emous et al., 2013). Breeder pullets are fed to achieve target BW, and meeting growth objectives during the rearing phase has been related to improvements in reproductive parameters such as fertility, hatchability, and embryo mortality (Leeson and Summers, 2000;...
Comments : 0
Recommendations: 1
BE THE MASTER OF ENERGY. Dr. Pierre-André Geraert, Adisseo's director of Scientific Marketing, points out the benefits of NESTOR, a service to obtain nutritional recommendations for poultry & swine in net energy, digestible amino acids, and minerals to adapt them to specific conditions ...
Comments : 1
Recommendations: 6
Edgar Oviedo-Rondón (NC State University) discusses the importance of amino acids and how to find the proper levels to achieve better growth and development....
Comments : 0
Recommendations: 0
.jpg&w=3840&q=75)
1. Introduction Nutrition plays a pivotal role in maintaining the health of pullets, quality egg production by laying hens and body growth of broilers (Wang et al. 2017). Nutraceuticals are the nutrients or constituents of animal diet that have nutritional and pharmaceutical importance by preventing various diseases, possessing immunomodulatory potential, providing health benefits and consequently increasing productivity (Dhama et al. 2015; Aronson 2017; Helal et al. 2019;...
Comments : 0
Recommendations: 0
INTRODUCTION Poultry needs protein for growth, egg production, immunity, enzymatic activity, tissue turnover, and much more (Beski et al., 2015). Similar to other essential amino acids ( AA ), supplemental branched-chain amino acids ( BCAA ) such as isoleucine and valine allow for a reduction in the crude protein ( CP ) in the diet, whereas leucine is generally found in higher amounts in the cornbased diet (NRC, 1994; Waldroup et al., 2002). A low CP diet...
Comments : 0
Recommendations: 1
Ewa Sujka talks about the sanitary challenges of organic farming production and also gives an overview of the solutions that Liptosa offers in the market.
*Certain information associated with products, their composition and claims may be different depending on the geographical region and may not be applicable in all countries. Liptosa reserves the right to adapt to the requirements and legislation in each case.
The information and technical recommendations provided herein are based on...
Comments : 0
Recommendations: 5
Neil Turner, Sales Director of Creamino® at Alzchem, speaks about the mode of action of Creamino® a feed additive for animals, which is naturally processed into creatine after absorption into the body
...
Comments : 0
Recommendations: 2
.jpg&w=3840&q=75)
Birds are omnivorous species, they are evolutionarily designed to consume products from plant and animal origin. However, for several reasons, poultry nutrition is shifting more and more to a vegetable diet. This shift has resulted in losing some important benefits of animal products, including creatine, an essential com-pound found in meat but not in plants. A feed ingredient survey conducted at AlzChem showed that creatine values found for meat meal (n=38) or fish meal...
Comments : 1
Recommendations: 5
Reducing limitations in intracellular energy metabolism and improving cellular energy homeostasis can maximise the feed utilisation efficiency in broilers. Optimising the creatine stores by supplementing guanidinoacetic acid (Creamino) can maximise performance, a study shows. Could you improve the profitability of production by adding Creamino on top of an application or energy-saving effect? And would this make a valuable contribution to reducing the impact of currently...
Comments : 0
Recommendations: 1
INTRODUCTION Methionine (Met) is often considered to be the first limiting amino acid in modern broiler diets. Synthetic Met has been commercially available for animal feed since the 1950s and is routinely included in modern poultry diets. Whilst studies on Met requirements, based on growth performance parameters are not novel, understanding the impact of dietary Met supplementations on apparent digestibility and plasma concentrations of amino acid is important in conventional...
Comments : 0
Recommendations: 2
Nutrient-specific appetite has been defined as a dietary selection developed as a response to a specific nutritional requirement (Niknafs and Roura 2018). In chickens, specific appetites offer the opportunity to determine individual differences in nutrient requirements (Roura and Navarro 2018). In a double-choice feed model, slow compared to fast-growing chicks showed a high preference for feed supplemented with Glycine (Gly) versus an iso-energetic balanced diet (Roura and Navarro 2019)....
Comments : 0
Recommendations: 0
Speculation over the Provisional Ruling on Anti-dumping Duties of Lysine by the EU Against China
Suggested link
Introduction The influence of seminal plasma on sperm storage may vary among species. Its removal is recommended in the majority of semen cryopreservation protocols of species such as caprine in order to ensure maximal sperm viability [1], but it isn’t entirely recommended in other mammals (e.g. ovine; [2]). Mammalian seminal plasma may contain factors that influence resistance of sperm to cold-shock damage and may prevent cryoinjury [3–5]. Conversely, detrimental...
Comments : 0
Recommendations: 0
I. INTRODUCTION True sustainability was defined by the World Commission on Environment and Development (Brundtland Commission, 1987) as “the ability to meet the needs of the present without compromising the ability of future generations to meet their own needs”. Sustainability is a concept with multiple facets including, environmental (which includes both the demand for resources and environmental pollution), ethical (welfare and social conscience), economic and...
Comments : 0
Recommendations: 1
