The present study was carried out to evaluate the effects of exposure at different doses of acephate on hematology, blood biochemistry, oxidative stress and immune system of Wistar rats. The experiment was carried out on 40 Wistar rats, which were divided in four groups. Animals of the three treatment groups were given with different sublethal doses (1/40th, 1/20th, 1/10th of lethal dose 50 value) of acephate by oral gavage. The hematology, blood biochemistry, oxidative stress marker, humoral immune response and cell-mediated immunity were evaluated following acephate exposure. Significant alteration in hematological parameters was not observed following different doses of acephate; however, significant alteration in alkaline phosphatase, gamma glutamyl transferase, acetyl cholinesterase, lipid peroxidase and superoxide dismutase was observed in medium- and high-dose group animals. Nonsignificant decrease in antibody titer in animals exposed to high dose has been observed compared with animals of control group. However, significant alteration in cell-mediated immunity was not observed in animals treated with acephate at different doses.
The present study was carried out on bovine mastitis with an objective to screen bovine milk samples around Junagadh for status of subclinical mastitis (SCM) by somatic cell count (SCC), to reveal the prevalence of staphylococcal mastitis by conventional and molecular methods and to evaluate the antimicrobial resistance pattern of the isolated Staphylococci. Total 390 bovine milk samples (180 from clinical mastitis and 210 from apparently healthy animals) were collected. Among 210 milk samples from healthy bovine, 72 samples showed SCC value andgt; 5 lakhs/mL revealing 34.29% prevalence of SCM. A primary culture isolation of 252 milk samples (72 SCM and 180 clinical mastitis) showed 38.72% prevalence of Staphylococcal mastitis. The isolated Staphylococci were further characterized by biochemical tests which showed prevalence of coagulase negative Staphylococci and S. aureus 23.08% and 15.64%, respectively. The high resistance of Staphylococci was observed against ceftriaxone and amoxicillin-salbactum which displays antibiotic usage pattern in the region. Likewise bacterial isolates studied were highly sensitive to levofloxacin which suggest judicious use of this antibiotic in treatment of bovine mastitis. All the conventionally isolated Staphylococci and S. aurues were confirmed by polymerase chain reaction targeting 16S rRNA and nuc gene respectively in shorter period of time which signifies the superiority of molecular diagnostic tools.
The high plan of nutrition right from an early age is believed to enhance ovarian activity and early onset of puberty in heifers. This study was therefore conducted to know the body weight, ovarian and blood biochemical changes in nutritionally supplemented and control groups of prepubertal Jaffrabadi buffalo (Bubalus bubalis) heifers. A total of 12 animals of 30 ± 2 month's age and the identical body weight of 380–410 kg from Cattle Breeding Farm, JAU, Junagadh were utilized for this study. They were randomly divided into two equal groups of 6 animals in each treatment and control groups. The heifers of the treatment group were supplemented with bypass fat (100 g), bypass protein (950 g) and chelated mineral mixture (50 g) over the routine farm feeding practices of control group, and its effect on body weight gain and blood biochemical profiles were studied at a monthly interval during 6 months of experimental period. The overall effect of nutritional supplementation on animals body weight, blood glucose and total cholesterol over the control group was statistically non-significant (p greator than 0.05) yet beneficial. The plasma total protein levels in the supplemented group increased with a duration of supplement and levels were significantly (p less than 0.05) higher over the control group. The ovarian dynamics evaluated by transrectal ultrasound during last three months of the study revealed an increasing number of growing follicles greator than 4 mm in diameters (5.00 ± 0.13 to 6.67 ± 0.40), without significant variation in diameters of largest follicles (9.14 ± 0.45 to 10.27 ± 0.85 mm) between groups or periods. However, none of the heifers exhibited behavioral signs of estrus during 6 months study, in spite of the establishment of cyclicity with the presence of developed follicles, or CLs suggesting silent ovulation, at 36 ± 2 months of age in this breed.
The present study was undertaken with the objective of phenotypic and molecular characterization of extended-spectrum betalactamase (ESBL) producing E. coli isolates from poultry. A total of 300 cloacal swabs were collected, i.e., 200 from layer birds and 100 from broiler birds from three different farms in and around Junagadh district of Gujarat state. Out of 300 samples, 126 (42.00%) samples yielded E. coli. These isolates belonged to layer 85 (42.50%) and broiler 41 (41.00%) birds. Out of 126 isolates, 27 (21.43%) were confirmed as ESBL producers, i.e., 19 (22.35%) and 8 (19.51%) from layer and broiler birds, respectively, by initial screening of isolates for their susceptibility to any of the third and fourth generation cephalosporins or monobactam antibiotics by disc diffusion method and further confirmation by combination disc method using ESBL identification kits. Out of 27 phenotypically confirmed ESBL E. coli isolates blaTEM was detected in 21 (77.78%) and blaAmpC was detected in 15 (55.56%) isolates, while all the 27 isolates were found negative for the presence of blaSHV and blaCTXM genes. All the 27 isolates were found positive for either blaTEM or blaAmpC gene. Nine (33.33%) out of 27 isolates were found positive for both blaTEM and blaAmpC genes. The findings warrant the need for more strict regulations for usage of antibiotics in veterinary practices in order to prevent the emergence and dissemination of multidrug resistant E. coli pathogens among birds, animals, and humans.
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