Staphylococcus aureus is one of the major pathogens responsible for causing food poisoning worldwide. The emergence of antibiotic resistance in this bacterium is influenced by various factors. Among them, bacterial acquired defense systems described as clustered regularly interspaced short palindromic repeats (CRISPR)-cas system might be involved in antibiotic resistance development in bacteria. The current study was designed to assess the prevalence of S. aureus and its antibiotic resistance profile and identify the relationship of the CRISPR-cas system with antimicrobial resistance, followed by phylogenetic analysis. Total samples (n = 188) of poultry meat were collected from the poultry bird market of Lahore, Punjab, Pakistan. We used both phenotypic (antibiotic disc diffusion) and genotypic methods (PCR) to identify multi-drug resistant (MDR) strains of S. aureus. Additionally, the role of the CRISPR-Cas system in the isolated MDR S. aureus was also assessed. In addition, real-time quantitative PCR (qRT-PCR) was used to evaluate the association of the CRISPR-cas system with antimicrobial resistance. All of the S. aureus isolates showed 100% resistance against erythromycin, 97.5% were resistant to tetracycline, and 75% were resistant to methicillin. Eleven isolates were MDR in the current study. The CRISPR system was found in all MDR isolates, and fifteen spacers were identified within the CRISPR locus. Furthermore, MDR S. aureus isolates and the standard strain showed higher expression levels of CRISPR-associated genes. The correlation of said system with MDR isolates points to foreign gene acquisition by horizontal transfer. Current knowledge could be utilized to tackle antibiotic-resistant bacteria, mainly S. aureus.

Background: Levofloxacin, a fluoroquinolone, is an extensively used antibiotic effective against both positively and negatively staining bacteria. It works by inhibiting bacterial topoisomerase type II and topoisomerase type IV, resulting in impaired DNA synthesis and bacterial cell death. Eryptosis is another term for apoptotic cell death of erythrocyte marked by cell shrinkage, phosphatidylserine (PS) flipping, and membrane blebbing. Methods: The intent of the present research was to look at the eryptotic effect of levofloxacin by exposing erythrocytes to therapeutical doses (7, 14 µM) of levofloxacin for 48 hours. Cell size evaluation, PS subjection to outside, and calcium channel inhibition were carried out to investigate eryptosis. Oxidative stress generated by levofloxacin was measured as a putative mechanism of eryptosis using glutathione peroxidase (GPx), superoxide dismutase (SOD), and catalase activities. Similarly, hemolysis measurements demonstrated levofloxacin’s cytotoxic effect. Results: Our findings showed that therapeutic doses of levofloxacin can cause a considerable decline in antioxidant enzymes activities, as well as induce cell shrinkage, PS externalization, and hemolysis in erythrocytes. The role of calcium in triggering erythrocyte shrinkage was also confirmed. Conclusion: In conclusion, our findings showed that the indicated levofloxacin doses caused oxidative stress, which leads to erythrocyte death via eryptosis and hemolysis. These findings emphasize the importance of using levofloxacin with caution and the need for additional research to mitigate these side effects.

| Peste des petits ruminants (PPR) caused by PPR virus (PPRV), is a contagious disease of domestic and wild small ruminants . The disease is endemic in developing countries of African and Asian worlds including Pakistan, where several clinical cases in small ruminants (sheep and goat) have been frequently reported. Despite PPRV is endemic in Pakistan, information on disease serosurveillance of prevailing strains in Gilgit-Balitistan (GB) territory is scarce. Therefore, the current study was designed to assess the seroprevalence of PPRV and to evaluate potential risk factors involved in the transmission of PPR disease in four distinct locations of GB province. We reported occurrence and risk factor analysis of PPR in small ruminants (n=1000) originating from different places in district Gilgit using Hem agglutination Inhibition (HI) test followed by risk analysis through Open-Epi software. Serum samples including goats n=500 and sheep n=500 were collected from different herds situated at Naltar lake, Tattovat, Fairy meadows, Bangle, and Naltar. Overall a comparable prevalence was identified for both goat and sheep (46% vs 44%, P > 0.05). Future studies are necessary to further ascertain the study outcomes and elucidate the molecular epidemiology of prevalent strains in the said geographical locations for better disease control and management interventions.

Expensive and ineffective feed ingredients in fish feed are becoming a major problem for fish growth in the aquaculture industry. Therefore, the experiment was conducted to investigate the utilization of fruit processing wastes as a dietary component in the feed of rohu (Labeo rohita). Four different feed formulations were prepared using commercial diet and supplemented with different levels of orange peel powder (CT= 0%, T1= 15%, T2= 30% and T3= 45%). The experiment was performed in aquariums of dimensions 1x1.5x2 feet, filled with approximately 79 liters of water. Fish were fed two times a day at rate of 3% of their body weight for 35 days. The results showed that the T1, T2, and T3 treatments had almost 104%, 160%, and 68% higher weight gain than that of CT, respectively. The T1 (7.55%), T2 (17.78%), and T3 (4.26%) treatments had a lower feed conversion ratio than that of CT. The T1, T2, T3 treatments had almost 14.18%, 15.27%, and 6.11% lower mean corpuscular hemoglobin concentration than that of CT. The T1 and T2 treatments had almost 7.01% and 17.42% higher total serum protein than that of CT, respectively. The T1 (0.90%) and T2 (6.23%) treatments had higher A/G ratios than that of CT, respectively and T3 (0.01%) had lower A/G ratio than that of CT. Overall, the dietary supplementation of 30% orange peel improved growth performance, feed utilization, oxidative stress, and hematological parameters in Labeo rohita.

| The lumpy skin disease is a viral infection in which many nodules are appeared on skin and other parts of body in animals. This virus, lump skin disease virus (LSDV) belongs to capripox virus genus is the main cause of lumpy skin disease (LSD). It is an acute or sub-acute systemic viral disorder of buffalo and cattle. It is recently discovered disease of cattle which is putting a negative impact on economy of dairy industry in Asia. The rounded Nodules on skin is the early symptom of LSD in clinical investigation. The nodules in the mucous membranes of nose and mouth, subcutaneous edema, emaciation, and exaggerated lymphadenopathy are additional clinical symptoms of this disease. Mortality rates is about 3 % in endemic regions of Asia while the morbidity is upto10%. The LSDV is transmitted through the entry of blood from outsource by biting of arthropods including mosquitoes and flies from infected animal to healthy one. To control the dispersal of LSDV, infected animals should be quarantined, restricted its movement and place them in a place of no entry of vectors, arthropods. The recent review investigated new knowledge on several facets of the disorder, including its distribution, transmission, origin, pathophysiology, host vulnerability, diagnosis, preventiand therapeutic approaches. Lumpy skin disease virus belongs to Poxviridae family and genus, Capripoxvirus . It cause acute to fatal infection in cattle. Lumpy skin disease results in loss of weight, infertility, abortion in cows and reduction in milk production. In this way this disease has a serious threat to economy of Middle East, European and African countries due to loss of meat and dairy products. LSD is becoming a global threat mainly in region of Middle East and Europe due to trading patterns and climate change as well. LSDV is spreading from one to another through vectors like flies and insects which bite these infected animal and suck blood from their skin and transfer the causative agent from infected animals to healthy one. There are number of factors upon which the spreading of LSDV depends including, environment, humidity, temperature and regions where vectors of its dispersal are more. This disease is spreading at its high at the end of summer season when there is more humidity in air and autumn. Its control is done by vaccination and quarantine of infected animal to prevent its contact with the healthy animals.

Introduction Coccidiosis, caused by Eimeria species, is an important protozoal disease of poultry characterised by enteritis and bloody diarrhoea. As a general practice, several coccidiostats at low dose rate are fed continuously to prevent clinical