Humans and animals are unable to synthesize essential amino acids such as branch chain amino acids methionine (Met), lysine (Lys) and tryptophan (Trp). Therefore, these amino acids need to be supplied through the diets. Several essential amino acids are deficient or completely lacking among crops used for human food and animal feed. For example, soybean is deficient in Met; Lys and Trp are lack...

The compensatory growth, proximate composition and amino acid contents changes of young yellow catfish (Pelteobagrus fulvidraco R.) (1.63-1.69 g) had been investigated using a 45-day cyclic feed deprivation and re-feeding experiment. The control group (S0) was fed daily with live tubificid worms (Limnodrilus hoffmeisteri), while the S1/4, S1/2, and S1/1 groups cyclically experienced one-day of ...

Abstract Bacteria produce diverse d-amino acids, which are essential components of cell wall peptidoglycan. Incorporation these acids into peptidoglycan contributes to bacterial adaptation environmental changes and threats. d-Amino have been associated with growth, biofilm formation dispersal regulation metabolism. The diversity in bacteria is primarily due the activities amino acid racemases t...

I . The plasma levels of individual amino acids were studied in dairy cows under different conditions of production and energy nutrition. 2. A preliminary experiment was conducted which established that there was no regular change in amino acid levels with time of sampling in animals offered food twice daily at milking. 3. For animals in the 8th month of pregnancy plasma concentrations of lysin...

The paper surveyed the chemical composition and nitrogen distribution of Maiwa yak milk, and compared the results with reference composition of cow milk. Compared to cow milk, yak milk was richer in protein (especially whey protein), essential amino acids, fat, lactose and minerals (except phosphorus). The contents of some nutrients (total protein, lactose, essential amino acids and casein) wer...