Hematologic, Serum Biochemical Parameters, Fatty Acid and Amino Acid of Longissimus dorsi Muscles in Meat Quality of Tibetan Sheep
نویسندگان
چکیده
Background: Reference values are very important in clinical management of diseased animal. The mutton quality characteristics not only could reflect the breed of sheep, but also allow for a selection of improved meat quality in the breed analyzed with more attractive sensory attributes. The aim of this study was to establish reference values for commonly used hematologic and biochemical parameters and evaluating the amino acid and fatty acid composition of meat quality traits of Tibetan sheep. Materials, Methods & Results: A total of 80 Tibetan sheep were randomly selected. Blood samples were collected used for hematological and biochemical analysis. The contents of mineral elements in serum were also measured. The animals were slaughtered according to commercial procedures. The mutton samples were removed from the Longissimus dorsi (LD) muscles used for amino acid and fatty acid composition analyzed. We have established a locally relevant reference parameters for commonly used hematological and biochemical tests. Most hematological and serum biochemical values were similar to those of yaks and camels, but the Hemoglobin (HGB) concentration was a little higher. The concentrations of Cu, Zn and Se were remarkably lower than critical values in the present study. LD muscle in Tibetan sheep had a higher proportion of total PUFA. We found a large amount of Glu, Lys, Asp, Leu and Arg in the LD muscle of Tibetan sheep. Discussion: Hematological and biochemical parameters are useful tools in measuring the physiological status of animals because they may provide information for diagnosis and prognosis of diseases. Tibetan sheep has survived for millions of generations in this low oxygen condition on the plateau. Tibetan sheep must have evolved exceptional mechanisms to adapt to this extremely inhospitable habitat. The study about Tibetan sheep will undoubtedly facilitate the discovery of potential molecular mechanisms of high-altitude adaptation. In the present study of the Tibetan sheep, all the hematological parameters referring to the erythrocyte and leukocyte series and also to the blood platelet counting were within the reference intervals considered as normal for the ovine species. The hematological results for Tibetan sheep were basically within the reference ranges for other ruminants, including yaks, Przewalski’s, Tibetan gazelles and camels. Trace element deficiency and unbalanced distribution is a major problem in the QTP, which has caused enormous economic loss to the herdsmen. The concentrations of Cu, Zn and Se were remarkably lower than critical values in the present study. Fatty acid composition plays an important role in meat quality, not only in the flavor quality, but also in the nutritional value of meat. Meanwhile, fatty acid analysis can be also used to evaluate the quality of animal meat. LD muscle in Tibetan sheep had a higher proportion of total PUFA, which were considered as flavor precursors of meat. This provides an evidence for that Chinese indigenous sheep show better mutton flavor intensity. Amino acids are the fundamental units of protein, and amino acid content plays an important role in meat quality by providing nutritive value and flavour characteristics. We found a large amount of Glu, Lys, Asp, Leu and Arg in the LD muscle of Tibetan sheep. The fatty acid and amino acid of LD muscles not only could reflect the character of Tibetan sheep mutton, but also allow for a selection of improved meat quality in the breed analyzed with more attractive sensory attributes.
منابع مشابه
Comparison of the Fatty Acid Composition of the Longissimus Dorsi Muscle of Kids, Lambs and Calves Produced under Iranian Transhumant Production System
Transhumant production system (TPS) is a type of extensive livestock production practiced by transhumant pastoralists in which indigenous livestock breeds are mainly fed a pasture-based diet. The hypothesis tested in this work was whether differences existed between fat samples from the different species in respect to ratios of n-6/n-3, and polyunsaturated fatty acids to saturated fatty acids. ...
متن کاملMeat Quality and Physicochemical Trait Assessments of Berkshire and Commercial 3-way Crossbred Pigs
In this study, we compared qualities and physiochemical traits of meat from Berkshire (black color) pigs with those of meat from 3-way Landrace (white color) × Yorkshire (white color) × Duroc (red color) crossbred pigs (LYD). Meat quality characteristics, including pH, color, drip loss, cooking loss, and free amino acid, fatty acid, vitamin, and mineral contents of longissimus dorsi muscles, we...
متن کاملMeat Quality Traits of Longissimus dorsi Muscle from Carcasses of Hanwoo Steers at Different Yield Grades
The strategy for increasing the palatability of Hanwoo beef through fattening could lead to a decline in yield grade. The aim of this study was to examine the meat quality traits of Longissimus dorsi (LD) muscle from carcasses of Hanwoo steers at different yield grades. A total of 246 Hanwoo steers was divided into the following yield grades: A (n=77), B (n=76) and C (n=93). Meat quality traits...
متن کاملThe effect of diet that contained fish oil on performance, serum parameters, the immune system and the fatty acid composition of meat in broilers.
A study with a duration of 42 days was conducted to evaluate the influence of fish oil inclusion on performance parameters, serum lipid content, antibody responses to sheep red blood cells (SRBC) and the composition of antigen and meat fatty acids in broilers. Two hundred and sixteen 1-day-old broiler chicks from a commercial hybrid (Cobb 500) were allocated randomly to four groups, which rece...
متن کاملBranched-chain amino acid aminotransferase activity decreases during development in skeletal muscles of sheep.
The catabolism of branched-chain amino acid (BCAA) differs between sheep and monogastric animals. The transamination of BCAA seems to be affected by development of the sheep. We studied the developmental changes in the activity and expression of the BCAA aminotransferase (BCAT) isoenzymes in skeletal muscle of sheep. Five muscles were taken from fetus, newborn, preruminant and ruminant lambs. B...
متن کامل