Abstract
Background and Aim:Blood proteins in birds serve as an important indicator in the evaluation of health status and represent a basis in general biochemistry allowing the identification of metabolic alterations. The objective of this study was to evaluate the protein profile in broiler chickens extended by the concentrations of serum protein fractions at different periods of fattening.Materials and Methods:Into the evaluation, we included 24 clinically healthy Ross 308 line meat-type chickens at the age of 2 days. Blood samples were taken on day 4, 18, 32, and 46 of fattening always from six randomly selected chickens. Chickens were fed with a commercial starter, grower, and finisher feeds. The concentrations of total serum protein and protein fractions were evaluated.Results:Various significant changes in the proportion of the individual protein fractions were found during the observed period except for the beta-globulins in all protein fractions and the albumin/globulin (A/G) ratio. At the beginning of the fattening period, the relative concentrations of albumin, α1-globulins, and A/G ratio were significantly lower and the values of α2- and γ-globulins significantly higher (p<0.05). The values of pre-albumin fraction were found as a small band preceding the albumin fraction differed significantly between the different age groups of chickens (p<0.05). The total serum protein concentrations showed higher values in older broilers; the significantly highest mean value was recorded on day 32 of fattening.Conclusion:The results suggest that fattening and age of broilers influences not only the production patterns, metabolic processes, and lipid and mineral profile but also the parameters of protein profile. However, seeing that some contradictory data exist regarding the number and size of globulin fractions in chickens, further analyses are needed.
Highlights
The total serum protein concentrations showed higher values in older broilers; the significantly highest mean value was recorded on day 32 of fattening
The results suggest that fattening and age of broilers influences the production patterns, metabolic processes, and lipid and mineral profile and the parameters of protein profile
Blood proteins in birds serve as an important indicator in the evaluation of health status, and of production features, and their evaluation represents a basis in general biochemistry allowing the identification of metabolic alterations [1,2]
Summary
Blood proteins in birds serve as an important indicator in the evaluation of health status, and of production features, and their evaluation represents a basis in general biochemistry allowing the identification of metabolic alterations [1,2]. Seeing that the blood proteins have numerous physiological roles in the body and the maintenance of homeostasis, the determination of their concentrations in avian patients is of exceptional significance for the evaluation of health state, as well as body condition [3]. The total protein (TP) concentrations in birds are about the half of values (approximately 40 g/l) measured in mammals, caused by the presence of extremely high. Blood proteins in birds serve as an important indicator in the evaluation of health status and represent a basis in general biochemistry allowing the identification of metabolic alterations. The objective of this study was to evaluate the protein profile in broiler chickens extended by the concentrations of serum protein fractions at different periods of fattening
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