Hatem Atalla

Introduction: The objective of the present study was to report, for the first time, the presence of canine parvovirus type 2c (CPV-2c) in domesticated dogs with acute gastroenteritis and to characterize the antigenic variants circulating in Palestine. Methodology: A veterinary clinical-based epidemiological study was carried out between December 2022 and April 2023. Fifty fecal samples were collected from dogs with gastroenteritis and screened for CPV-2 infection by polymerase chain reaction. The distribution of positive cases according to various epidemiological factors was studied. Partial sequencing of the viral protein 2 (VP2) gene was performed for the analysis of CPV-2 variants. Results: Most of the investigated samples (60%; n = 50) during the study period were found positive for CPV-2 infection. There was no difference in the distribution of positive cases of CPV-2 infection based on age group, gender, location, and vaccination status. The analysis of nucleotide and amino acid sequences from amplified products, as well as phylogenetic analysis, revealed the presence of CPV-2c clustered with Asian CPV-2c variants. Conclusions: In summary, this study represents the initial genetic analysis of CPV-2 present in Palestinian dogs with gastroenteritis and provides evidence that confirms the existence of the CPV-2c variants. To determine the prevailing CPV-2 variant associated with the infection, it is crucial to conduct further sequence analysis using large populations of both domestic and wild canines.

International Journal of Current Microbiology and Applied Sciences ISSN:2319-7692(Print), ISSN:2319-7706(Online) is a multidisciplinary peer-reviewed journal with reputable academics and experts as members of its Editorial Board. The Current Microbiology aims to publish all the latest and outstanding research articles. Review and letters in all areas of major importance to techniques of microbiology and applied research with publishes high quality of review and research articles on novel aspects of Microbiology including Environmental, Food, Agricultural, Medical, Pharmaceutical, Veterinary, Soil, Water and Biodeterioration.

This experiment was conducted to investigate the effect of pregnant mare serum gonadotrophin (PMSG) levels and the progestagen method on estrus response, onset and duration of estrus, lambing rate and litter size. A total of 20 Assaf ewes were used in the experiment, which was conducted during April, a month that is considered as non-breeding period in Palestine. Ewes were treated with intravaginal sponges containing 60 mg medroxyprogesterone acetate (MAP). Seven days later, sponges were removed and 10 new sponges were inserted to 10 of the experimental ewes. Following withdrawal of sponges at day 14, 5 ewes from each treatment groups were injected intramuscularly with a pregnant mare serum gonadotrophin (PMSG) at level of 300 or 600 IU. The results showed that level of PMSG and progesterone application methods had no significant effects on the tested parameters. This finding indicated that low level of PMSG can be applied for estrus synchronization. Results showed that using one sponge followed by a 300 IU dose of PMSG could induce estrus successfully with low cost comparing to application of two sponges and high doses of PMSG.