Preparation of a JAZF1 protein polyclonal antibody and its potential role in broiler ascites syndrome

As a novel functional protein, juxtaposed with another zinc finger protein 1 (JAZF1) can regulate the growth and apoptosis through various pathways, and maintain the body's normal physiological metabolism. To explore the important role of JAZF1 in broiler ascites syndrome (BAS), we analysed the expression and distribution of the protein in poultry and mammal tissues based on the prepared polyclonal antibody. In this study, the recombinant plasmid PET32a-JAZF1 was constructed by TA cloning, subcloning and other technical methods, and the fusion protein His-JAZF1 was successfully expressed. After purification, His-JAZF1 was used as the antigen to prepare high-quality chicken-derived antibodies. Subsequently, the results showed that JAZF1 protein in broiler tissues could be specifically recognized by this antibody. Immunofluorescence showed that JAZF1 protein mainly exists in the cytoplasm of pulmonary artery, liver, kidney, heart and lung tissue cells of various animals. The expression of this protein was more obvious in broiler and duck tissues than in mammalian tissues. In addition, western blotting combined with immunofluorescence showed that BAS caused a significant decrease in JAZF1 protein in tissue cells. This effect further indicated that JAZF1 protein was closely related to the occurrence of BAS and provided a new entry point for the functional study of JAZF1 protein.

Preparation of ribosomal protein S14 polyclonal antibody in broiler pulmonary artery: Its application in broiler ascites syndrome

RPS14 (ribosomal protein S14) gene maintains the normal physiological activities of the body by regulating the biosynthesis of ribosomes and the translation of important proteins. This study aims to explore the potential role of RPS14 in broiler ascites syndrome (BAS). We successfully prepared polyclonal antibody against RPS14 and studied the localization and expression of RPS14 protein in a variety of animal key tissues. In this experiment, the recombinant expression plasmid PET28a-RPS14 was constructed using the prokaryotic expression technology of foreign genes. Under the conditions of IPTG induction, a His-RPS14 protein with a molecular weight of about 22 kDa was expressed, and the purified recombinant protein was used as an antigen to prepare rabbit anti-chicken serum. Western blot results showed that the serum could specifically identify RPS14 protein in important tissues of broilers. Immunofluorescence combined with homology analysis showed that the antiserum had significant species specificity. Compared with other species, the expression of this protein in key tissues of broilers and ducks was more significant. More importantly, western blotting and immunofluorescence showed that BAS significantly reduced the expression level of RPS14. This further indicated that RPS14 protein can be used as one of the important entry points for BAS research.

Broiler ascites syndrome: collateral damage from efficient feed to meat conversion

Chickens have been raised as food for human consumption for over 4000 years. Over this time they have been continuously selected for specific desirable characteristics by active selection of parents to produce birds which fit perceived needs. Despite this long history of selective breeding and improvements in rearing techniques, the efficiency with which broiler meat is produced has shown a remarkable leap in recent decades. Persistent selection for rapid growth, high feed utilisation efficiency and large cut yield has resulted in modern meat-type poultry lines with superior genetic potential with regard to productivity. However, mortality and the incidence of metabolic diseases has increased in parallel with growth rate. One such disease is broiler ascites syndrome, which has been shown to be closely associated with the fast growth and high meat yield resulting from intense selection and with modern rearing techniques. The review is focused on the historical background, pathogenesis, epidemiology and prevention of broiler ascites syndrome in modern broiler production.