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Model diets

Diet Introduction

Product code

Remarks

Lysine-deficient Diet

Lysine-deficient Diet refers to feeds with lysine content below the level required for normal growth, development and physiological functions of animals. Lysine is an essential amino acid, for animals, can not synthesize their own or synthesis rate can not meet the needs, must be obtained from the feed. From the nutritional point of view, lysine (Lys) is one of the essential amino acids for humans and animals, and one of the key amino acids for growth and development; from the point of view of the regulation of body functions, lysine is a regulator of many body functions. Since lysine is the amino acid for synthesizing L-carnitine, lysine deficiency can cause L-carnitine deficiency, i.e., lysine-deficient model feeds are also L-carnitine-deficient model feeds.

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Arginine-deficient Diet

Arginine-deficient Diet are feeds in which the arginine content fails to meet the demand of normal physiological functions of animals. Arginine is a conditionally essential amino acid, which participates in a variety of physiological processes in the animal's body, and is very important for the animal's growth, immunity, reproduction and other functions. Urinary urea, orotic acid (Orotic acid) and citric acid (Citric acid) are significantly increased in arginine deficiency and both are considered indicators of arginine deficiency, but there is controversy as to whether an increase in urinary citric acid can reflect arginine deficiency, as this indicator is affected by age, sex, and germline. From studies in experimental animals such as rats, mice, gophers, guinea pigs, rabbits, and dogs, urinary orotate is now considered a reliable indicator of arginine deficiency. In humans, however, arginine deficiency does not appear to be accompanied by increased whey acid secretion.

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Histidine-deficient Diet

Histidine-deficient Diet are feeds in which the histidine content does not meet the requirements of normal physiological functions of animals. Histidine is an essential amino acid that is involved in many important physiological processes in the animal body. When the body is in a histidine-deficient state, histidine and β-alanine can be formed from carnosine hydrolyzed under the action of canosinase. Other histidine-containing dipeptides in the body include homocarnosine, anserine, and ophidine. Of these dipeptides, myostatin is the most sensitive to dietary histidine supply.

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Methionine deficient Diet

Methionine-deficient Diet refers to feeds with methionine content below the level required for normal physiological functions of animals. Methionine is a sulfur-containing essential amino acid, which cannot be synthesized by itself in the body of animals, but must be obtained from food, and plays a key role in many physiological processes such as protein synthesis and methyl transfer reaction. Methionine (Met) is not only an essential nutrient for protein synthesis, but also plays a key role as a sulfur donor in the body and is associated with hyperhomocysteinemia, methylation and fat metabolism. Methionine-deficient feeds are exactly the kind of feeds used to study altered body function in the presence of methionine deficiency.

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Cystine Deficient Diet

Cystine-deficient Diet are feeds in which the cystine content does not meet the animal's needs for normal physiological function. Cystine is a sulfur-containing amino acid that is important for physiological processes such as protein synthesis, antioxidant and hair (feather, wool, etc.) growth in animals.

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Valine-deficient Diet

Valine-deficient Diet are feeds in which the valine content is lower than that required for normal physiological functions of animals. Valine is an essential amino acid, which cannot be synthesized by animals themselves and must be obtained from food, and it plays a key role in protein synthesis, regulation of growth hormone secretion and other physiological processes.

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Leucine deficient Diet

Leucine-deficient Diet are feeds in which the leucine content does not meet the demand of normal physiological functions of animals. Leucine is an essential amino acid, which is involved in protein synthesis, energy metabolism regulation and many other key physiological processes in the animal body.

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Isoleucine-deficient Diet

Isoleucine-deficient Diet means that the content of isoleucine in the Diet is lower than the level required by animals to maintain normal physiological functions. Isoleucine is an essential amino acid, which cannot be synthesized by animals themselves and must be obtained from food, and it plays a variety of important roles in the physiological processes of animals.

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Tryptophan-deficient Diet

Tryptophan-deficient Diet are feeds whose tryptophan content is lower than that required for normal physiological functions of animals. Tryptophan is an essential amino acid, which is not only used for protein synthesis in the animal body, but also plays a key role in various physiological processes such as neurotransmitter synthesis and immune regulation. Tryptophan (Trp) is both an essential amino acid and a very critical regulator, which is used as a raw material for the synthesis of a variety of neurotransmitters (e.g., 5-HT, tryptophan) in the central nervous system and peripheral nervous system, and tryptophan deficiency is considered to be an ideal tool for the study of the physiological functions of the brain's 5-HT (Serotonin). Tryptophan is also a partial source of vitamin B3 (niacin). Tryptophan deficiency increases the need for vitamin B3 and affects the synthesis of neurotransmitters, which manifests itself in learning, memory, behavioral abnormalities (aggression, aggressive behavior), endocrine abnormalities (e.g., altered thyroid function, gonadal function), and altered phytochromic tone. Tryptophan deficiency also causes cataracts.

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Tyrosine-deficient Diet

Tyrosine-deficient Diet are feets in which the tyrosine content of the feed does not meet the demand of normal physiological functions of animals. Tyrosine is a non-essential amino acid, which can be converted from phenylalanine in the animal body, but under certain circumstances (such as insufficient intake of phenylalanine or blockage of the conversion process), tyrosine can also become a conditionally essential amino acid.

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