Dr Valeriy Kryukov

1. IntroductionFeed materials, such as wheat and maize, are known to be major variables when formulating poultry diets, as their nutrient profile and quality are often inconsistent and deviate from default values used by feed formulation software [1]. Additionally, the feed industry has access to a wide range of feedstuffs and the use of a particular ingredient will often depend on its cost, sinc ...

IntroductionRecently, higher dietary arginine (Arg) levels than the recommended values in nutritional tables have been reported (Murakami et al. 2012; Xu et al., 2018; Zampiga et al.,2018; Oliveira et al., 2022). This suggests that Arg levels needed for maximum performance are increased in modern broilers. The high dietary Arg levels found in the literature may be associated with the critical role ...

An increase in dietary phytate concentration may limit the availability of both phosphorus (P) and calcium (Ca) as a result of the progressive formation of Ca-phytate complexes along the gastrointestinal tract (Selle et al., 2009). However, inconsistent results were reported regarding the impact of phytate on P and Ca release in the presence of phytase with broilers, presumably due to the differen ...

NHU: Net profit in 2023 was 2.704 billion yuan, down 25.30% YoY.On April 22, Zhejiang NHU Co., Ltd. released the 2023 annual report, showing that the company's operating revenue was 15.116 billion yuan, a YoY decrease of 5.13%. Net profit attributable to shareholders was 2.704 billion yuan, down 25.30% YoY.In the nutritional products sector, methionine phase II 250,000 mt/a project, of which 1 ...

Mycotoxins are secondary metabolites produced by fungi, the most abundant of which belong to the genera Aspergillus, Penicillium, and Fusarium. The conditions required for fungal development and the production of mycotoxins vary strongly with the substrate on which the fungal species develop.Because mycotoxins are mainly present in food and feed, the gut is the first target for mycotoxin toxicity, ...

IntroductionHeat stress (HS) is one of the most challenging environmental stressors despite the modern climate control equipment in broiler chickens’ houses. Broiler flocks may be seasonally exposed to HS that varies in intensity according to the relative humidity of the region [1]. Multiple studies have identified the various adverse effects of acute or chronic HS on chickens, such as a sev ...

1 IntroductionAmino acids are organic compounds containing both amino (—NH2) and carboxyl (—COOH) groups. Due to the presence of asymmetric carbon, all amino acids except glycine exhibit optical activity and exist as D- and L-isoforms or enantiomers (Lehninger et al., 2005). The asymmetric α-carbon imparts chirality, a phenomenon where the molecule is not superimposable to its mi ...