Amino acid blood parameters of three-breed hybrid pigs in the linear equation model

Amino acid parameters provide important and relevant data for objective assessment of physiological and biochemical status of organism and patterns of formation of economically useful traits of animals. The objective of this work is to model phenotypic and genetic patterns of variability of main amino acid parameters of blood of pig hybrids within the framework of mixed equation model. Main 19 amino acid parameters of blood serum of 58 heads of three-breed hybrids (Large White × Landrace × Duroc) were obtained and studied: content (g/100 ml) of aspartic acid and its amide (ASP+ ASN) was 0.64; glutamic acid and its amide (GLU+GLN) ‒ 1.04; alanine (ALA) – 0.46; glycine (GLY) – 0.28; threonine (THR) – 0.34, serine (SER) – 0.39; cysteine (CYS) – 0.21; methionine (MET) –0.07; valine (VAL) – 0.52; isoleucine (ILE) – 0.28; leucine (LEU) –0.83; tyrosine (TYR) – 0.46; phenylalanine (PHE – 0.50); histidine (HIS) – 0.31; lysine (LYS) – 0.69; arginine (ARG) – 0.51; proline (PRO) – 0.41. To calculate the correlation values, covariance and variance of features, models using the REMLF90 programs were fulfilled. It was shown that all amino acids have moderate and strong both phenotypic and genetic correlations (r> 0.5). All amino acids have a fairly close connection with the main biochemical indices. From the above, we can conclude that the equation of the mixed model allows us to obtain a deep understanding of the nature of the variability of the main amino acid indices of the blood, connected in a complex labile biochemical system.