Hematologic, serum biochemical parameters, fatty acid and amino acid of longissimus dorsi muscles in meat quality of tibetan sheep

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.[...](AU)

Hematologic, serum biochemical parameters, fatty acid and amino acid of longissimus dorsi muscles in meat quality of tibetan sheep

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.[...]

Levels of Cu, Mn, Fe and Zn in cow serum and cow milk: relationship with trace elements contents and chemical composition in milk

Background: Milk can be considered a source of macro- and micronutrients, together with bioactive substances, and also contains a number of active compounds that play a significant role in both nutrition and health protection. Data on milk chemical composition provide information on milk quality alterations and cow health status but is also useful in planning feeding and breeding. Animals living use changes in the photoperiod to adapt to seasonal changes in the environment. The composition of milk is of great importance for the dairy industry and there is great interest in changing the composition of milk. Dairy cow breeding in China has always been restricted by species, management, nutrient supply, seasonal variation and other factors, which cause the quality of raw milk is unsteady. The transition element cations have concentrations in blood, tissues and milk that are largely independent of the intake, as they relate to regulation of gut absorption and changing metabolic demands. Thus, the main objective of this study was to investigate the possible effects of nature month and physiological variables on chemical composition in milk and trace element levels in Chinese Holstein Friesian cows.Materials, Methods & Results: In this paper, cow milk samples were collected from 180 consecutive milkings during 6 month. For the first time, Pearson phenotypic correlations and...

Levels of Cu, Mn, Fe and Zn in cow serum and cow milk: relationship with trace elements contents and chemical composition in milk

Background: Milk can be considered a source of macro- and micronutrients, together with bioactive substances, and also contains a number of active compounds that play a significant role in both nutrition and health protection. Data on milk chemical composition provide information on milk quality alterations and cow health status but is also useful in planning feeding and breeding. Animals living use changes in the photoperiod to adapt to seasonal changes in the environment. The composition of milk is of great importance for the dairy industry and there is great interest in changing the composition of milk. Dairy cow breeding in China has always been restricted by species, management, nutrient supply, seasonal variation and other factors, which cause the quality of raw milk is unsteady. The transition element cations have concentrations in blood, tissues and milk that are largely independent of the intake, as they relate to regulation of gut absorption and changing metabolic demands. Thus, the main objective of this study was to investigate the possible effects of nature month and physiological variables on chemical composition in milk and trace element levels in Chinese Holstein Friesian cows.Materials, Methods & Results: In this paper, cow milk samples were collected from 180 consecutive milkings during 6 month. For the first time, Pearson phenotypic correlations and...(AU)