细化搜索
结果 541-550 的 669
A Study on Major Ectoparasites and Associated Skin Diseases of Ruminants in and Around Bishoftu Town, Central Ethiopia 全文
2024
Amanuel, Samson | Getahun, Temesgen Kassa
A cross-sectional study was conducted from November 2018 to April 2019 to evaluate the occurrence of ectoparasites and associated skin diseases in ruminants in and around Bishoftu town, central Ethiopia. A total of 437 ruminants (216 cattle, 141 sheep, and 80 goats) brought to the open-air Veterinary Teaching Hospital (VTH) of the College of Veterinary Medicine, Addis Ababa University, were sampled using simple random sampling. Accordingly, the occurrence of ectoparasites and associated skin diseases was found to be 59% (258), and out of these animals, 195 (44.6%) were infected with ectoparasites, of which 111 (25.4%) were bovine, 27 (6.2%) were caprine, and 57 (13%) were ovine. The major ectoparasite species identified were Amblyomma variegatum (13%), A. gemma (0.7%), A. cohaerens (1.8%), A. nymph (3.2%), H. truncatum (2.7%), Boophilus decoloratus (6.2%), Rhipicephalus pulchellus (1.8%), R. eversi (0.7%), Damalinia ovis (3%), Linognatus vituli (5.5%), Psoroptes (0.7%), Demodex bovis (0.5%), Ctenocephalides canis (0.7%) and Ct. felis (5.03). On the other hand, the associated skin diseases infesting animals were: 63 (14.4%), lumpy skin disease (0.9%), sheep pox (5.5%), goat pox (5%), dermatophilosis (0.2%), contagious ecthyma in caprine (2.1%), and contagious ecthyma in ovine (0.7%). The findings of the present study suggest that ectoparasites and associated skin diseases in and around Bishoftu are still widespread and economically important constraints for the productivity and use of ruminants. Hence, stringent adherence to the control of ectoparasites and associated skin diseases is required as a responsibility of the concerned government body based on professional research results in the study area.
显示更多 [+] 显示较少 [-]Use of zinc sulfate for the development of zinc-fortified meat products from broiler meat 全文
2024
Asma Sultana | Nathu Ram Sarker | Raihan Habib | Md. Shahin Alam | Dulal Chandra Paul | Mst. Farhana Sharmin | Aminul Islam | Ruhul Amin | Md. Sazedul Karim Sarker
Objective: The study aimed to assess the feasibility of incorporating food-grade zinc sulfate (ZnSO4) for making zinc-fortified meatballs from broiler meat. Materials and Methods: A total of 20 broiler breasts were treated with different concentrations of elemental zinc (Zn) of food-grade ZnSO₄ for making meatballs. The study included a control group without added Zn (T0: 0 mg/kg) and treatment groups with Zn concentrations of 10 mg/kg (T1), 20 mg/kg (T2), 30 mg/kg (T3), and 40 mg/kg (T4). Post-cooking, the meatball samples underwent preservation at −20°C for proximate composition, quality parameters, storage quality, texture, and sensory analysis. Results: Though the moisture content of meatballs did not differ significantly (p > 0.05), the T4 meatballs showed higher moisture percentages and significantly (p < 0.01) higher crude protein content compared to the control. However, a significant increase in cook yield (p < 0.01) and water-holding capacity (p < 0.05) were revealed by the T4 group. The T4 meatball recovered around 41.8% Zn. The malondialdehyde levels in all samples were acceptable when kept in the chiller for ten days. Moreover, the addition of varying doses of ZnSO4 did not result in a significant alteration (p > 0.05) in the hardness of the meatballs. The sensory panelists also validated the instrumental outcome of hardness. Conclusion: The addition of 40 mg/kg of elemental Zn from ZnSO4 improves nutritional composition and quality with no alteration of the texture and sensory properties of the meatball. This dose could be an effective strategy for fortifying chicken meat products and could offer a valuable source of dietary Zn for human consumption. [J Adv Vet Anim Res 2024; 11(4.000): 1130-1138]
显示更多 [+] 显示较少 [-]Use of a plant-based flavonoid blend in diet for growth, nutrient digestibility, gut microbiota, blood metabolites, and meat quality in broilers 全文
2024
Shathi Akter | Md. Aliar Rahman | Mohammad Al-Mamun | Mahbubul Pratik Siddique | Md. Abul Hashem | Rakhi Chowdhury
Objectives: This study aimed to determine the optimal doses of a flavonoid blend (FB) for enhancing cost-efficient production, digestibility, gut-beneficial microbiota, serum metabolites, and meat quality in broilers. Materials and Methods: For 35 days, 280-day-old chicks (Cobb-500) were randomly allocated to four groups, each containing 70 birds, with 5 replicates. Birds were given FB (gm/kg) at the levels of 0.0, 0.2, 0.4, and 0.6 in a basal diet (corn-soya-based) and designated as the control, 0.2 FB, 0.4 FB, and 0.6 FB groups, respectively. At 35 days, 15 birds from each group were slaughtered to analyze cecum microbiota, serum profiles, meat, and bone quality. Results: Compared with the control, birds given FB linearly showed better feed intake and overall performance, with the optimum results observed in 0.6 FB. Birds fed FB resulted in linear, quadratic, and cubic improvements in digestibility, with the 0.6 FB group presenting 12% more (p < 0.01) crude protein digestibility than the control. Birds offered either 0.4 FB or 0.6 FB increased (p < 0.01) the population of beneficial bacteria while reducing (p < 0.01) pathogenic bacteria in the cecum compared to the control. Birds fed 0.6 FB showed substantial improvements in beneficial serum metabolites and liver health, along with reduced bad cholesterol compared with the control. Although FB was unaffected (p > 0.05) by dressed yield, meat composition, lightness, or bone characteristics, the 0.6 FB group showed substantially (p < 0.01) more meat redness and bone ash percentage in broilers than in the control. Conclusions: Supplementing 0.6 gm FB/kg of diet improved growth performance, enhanced digestibility, increased beneficial gut microbiota and serum metabolites, and ameliorated meat quality in broilers. [J Adv Vet Anim Res 2024; 11(4.000): 979-988]
显示更多 [+] 显示较少 [-]Genetic characterization of LEP and TG5 gene polymorphisms in crossbred beef cattle populations 全文
2024
Dinh Van Dung | Duong Thi Huong | Than Thi Thanh Tra | Le Thi Thu Hang | Le Dinh Phung | Nguyen Huu Van | Ho Le Quynh Chau
Objective: This study aimed to investigate the single nucleotide polymorphisms (SNPs) in the intron 2 region of the leptin (LEP) gene and the 5' untranslated region of the thyroglobulin (TG5) gene across four crossbred beef cattle populations, including Blanc Bleu Belge × Lai Brahman (BLB), Charolais × Lai Brahman (CLB), Droughtmaster × Lai Brahman (DLB), and Red Angus × Lai Brahman (RLB) raised in Central Vietnam. Materials and Methods: A total of 200 tail hair root samples (50 per group) were collected, and genomic DNA was extracted. The PCR-RFLP method was utilized to analyze the LEP and TG5 gene polymorphisms using the restriction enzymes Sau3AI and PsuI, respectively. Results: The SNPs of LEP/Sau3AI and TG5/PsuI were present in all populations, with a lower frequency of the LEPB allele compared to LEPA. The LEPAA genotype was most common, followed by LEPAB and LEPBB; notably, the LEPBB genotype was absent in the CLB group. The Hardy–Weinberg equilibrium was observed for LEP/Sau3AI in the CLB and BLB populations. Conversely, the TG5CT genotype dominated all groups, with no individuals exhibiting the TG5TT genotype. None of the populations achieved Hardy–Weinberg equilibrium for TG5/PsuI. The level of polymorphism was moderate for LEP/Sau3AI in RLB and BLB and for TG5/PsuI across all groups. Conclusion: The SNPs of LEP/Sau3AI and TG5/PsuI may serve as valuable tools for genomic selection. By focusing on increasing the frequency of the TG5T allele, breeding programs can more effectively enhance beef marbling and other important traits, leading to improved beef quality and greater economic outcomes in the cattle industry. [J Adv Vet Anim Res 2024; 11(4.000): 989-995]
显示更多 [+] 显示较少 [-]The effect of quail egg supplements enriched with marine macroalgae Eucheuma spinosum on the physiological condition of Sprague Dawley rats during pregnancy 全文
2024
Hasan Basri | Slamet Widiyanto | Hendry T. S. Saragih | Zuprizal Zuprizal
Objective: To investigate the effect of quail egg supplements enriched with marine macroalgae Eucheuma spinosum on body weight and physiological conditions of Sprague Dawley rats during pregnancy. Materials and Methods: This study used a completely randomized experimental design. The test animals were 25 pregnant white rats aged 3 months and weighed ± 200 gm. Pregnant rats were divided into five treatments and five repetitions; each repetition contained one pregnant rat. T0: control treatment; T1: treatment group consuming quail eggs from quail fed commercial feed; T2: treatment group consuming quail eggs from quail fed with 3% E. spinosum; T3: treatment group consuming quail eggs from quail fed with 4% E. spinosum; T4: treatment group consuming quail eggs from quail fed with 5% E. spinosum. The parameters measured were egg proximate, egg iron, egg cholesterol, red blood cell (RBC), hemoglobin (Hb), hematocrit (HCT), mean corpuscular volume (MCV), mean corpuscular Hb (MCH), mean corpuscular Hb concentration (MCHC), white blood cell (WBC), lymphocytes (LYM), neutrophils (NEUT), RBC distribution width (RDW), platelet distribution width (PDW), mean platelet volume (MPV), cholesterol, high-density lipoprotein (HDL), low-density lipoprotein (LDL), glucose, superoxide dismutase (SOD), and malondialdehyde (MDA). Results: The addition of E. spinosum into quail feed at concentrations of 3%, 4%, and 5% did not show statistically significant differences (p > 0.05) in the proximate levels (water, ash, fat, protein, and carbohydrates) compared to the control. However, the analysis of iron in quail eggs indicated a significant increase (p < 0.05) in comparison to the control treatment. In addition, the supplementation of E. spinosum in the quail feed resulted in significantly reduced (p < 0.05) quail egg cholesterol levels when compared to the control treatment. Furthermore, the supplementation of quail egg produced by quail fed with E. spinosum did not significantly affect the birth weight of the pups, RBC, MCV, MCH, MCHC, WBC, LYM, NEUT, RDW, PDW, MPV, MDA, and SOD when compared to the control treatment (p > 0.05). Meanwhile, the mother weight, Hb, HCT, cholesterol, HDL, LDL, and glucose levels significantly increased (p < 0.05) compared to the control. Conclusion: The administration of E. spinosum with concentrations of 3%, 4%, and 5% can increase iron levels and decrease cholesterol levels in quail eggs. The administration of quail egg supplements produced by quail-fed additional macroalgae E. spinosum can increase body weight, Hb, and HCT in pregnant rats. The addition of marine macroalgae with concentrations of 4% and 5% can decrease the levels of cholesterol, LDL, and glucose and increase serum HDL levels in pregnant rats. [J Adv Vet Anim Res 2024; 11(4.000): 1114-1121]
显示更多 [+] 显示较少 [-]Phthalate plasticizer affects blood electrolytes, hormones, and reproductive parameters of black Bengal goats 全文
2024
Sajibul Hasan | Afrina Mustari | Kazi Rafiq | Mohammad Alam Miah
Objective: The present study looked at how electrolytes, hormones, and postpartum reproductive physiology were affected in black Bengal goats (BBGs) when they were fed a phthalate mixture (PHA). Materials and Methods: Twenty clinically healthy BBGs, 1–2 months pregnant, aged 6–8 months with a body weight of 10–12 kg, were chosen and randomly allocated to two experimental groups (n = 10 each). The BBGs of the treatment group (n = 10) were administered a standard ration containing a mixture of Diethyl Phthalate, Dibutyl Phthalate, Di-isobutyl Phthalate, and Dipropyl Phthalate. The non-treated control group (n = 10) received the goat ration without any phthalates up to parturition. Blood samples were taken from experimental pregnant goats just before parturition to analyze serum hormone and electrolyte levels. Results: The levels of sodium, chloride, and calcium were reduced (p < 0.05) in PHA-exposed goats than in the non-exposed control group. No significant difference was observed in potassium and phosphorus levels between the two groups. PHA-exposed goats showed significantly decreased levels of estrogen, progesterone, luteinizing hormone, and thyroxin compared to control goats (p < 0.05). Postpartum reproductive traits, such as gestation length, postpartum heat period, abortion rate, and retained placenta, were significantly (p < 0.05) prolonged in BBG that had been exposed to PHA. Conclusion: PHA plasticizer exposure during pregnancy affects the electrolytes, hormones, and postpartum reproductive physiology of BBGs. [J Adv Vet Anim Res 2024; 11(4.000): 1051-1056]
显示更多 [+] 显示较少 [-]Use of ash filtrate as an alternative to chemical disinfectant and its antimicrobial efficacy 全文
2024
Khairun Nahar Shithi | Ananna Saha | Md. Nurul Haque | Ismail Hossain | Mohammed Nooruzzaman | Jahan Ara Begum | Rokshana Parvin | Emdadul Haque Chowdhury
Objective: The study aims to prepare the ash filtrate (AF) from household ashes using an in-house-designed handmade filtration system and to observe the antimicrobial efficacy and sanitizing effects. Materials and Methods: Household ashes from various plant sources were collected, and AF was prepared through a handmade filtration system after adding water. The pH of stock AF was measured, and 20%, 40%, 60%, and 80% AF solutions were prepared by adding distilled water in appropriate proportions to obtain a wide range of pH values. The antimicrobial efficacy of AF against Salmonella spp. in vitro, Newcastle disease virus (NDV), and low pathogenic avian influenza virus (LPAIV) H9N2 in ovo were analyzed. Contaminated eggs were individually sprayed or dipped with AF to detect the bacterial load on the eggshell surface. Further experimental use of AF as an egg sanitizer in routine biosecurity operations in broiler sheds was also evaluated. Results: The prepared AF showed high alkalinity; pH varied from 10.7 to 8.20 and contained a higher amount of K, Na, and Cl. The alkaline AF and its dilution gradually inhibited Salmonella growth and showed gradual pH-dependent antibacterial efficacy. Similarly, AF and its dilution showed a gradual decrease in viral titer against the LPAIV (H9N2); however, antiviral activity against the velogenic strain of NDV was quite steady. Applying AF as an egg sanitizer also reduced the bacterial loads significantly on the eggshell surface compared to untreated eggs. Moreover, AF having pH 10.5 experimentally used in routine sanitization practices of a boiler shed resulted in low bird mortality (10/210), higher body weight gain, and a low feed conversion ratio compared to the untreated control flock. Conclusion: The higher alkalinity of the AF is responsible for the antimicrobial activity of commercial disinfectants. Consequently, we can use AF as a low-cost, effective, natural antimicrobial agent to replace chemical disinfectants. [J Adv Vet Anim Res 2024; 11(4.000): 1007-1016]
显示更多 [+] 显示较少 [-]Understanding the skin blackening phenomenon in Youzhou Dark goats based on the histological characteristics of melanocytes 全文
2024
Cancan Chen | Jie Li | Xiaoyan Sun | Jing Jiang | Shipeng Lv | Liangjia Liu | Gaofu Wang | Hangxing Ren
Objective: The study was conducted to identify the molecular mechanism of the phenotype formation of Youzhou black sheep by histological cytology and transcriptomics. Materials and Methods: In this study, HE and IHC staining were used to explore the patterns and cytological differences in skin pigment deposition between Youzhou Dark goats and Banjiao goats. In addition, the DEGs related to the black skin phenotype were identified via transcriptomic analyses. Finally, the expression pattern of the agouti signal protein (ASIP) gene in the skin from individuals with different skin color phenotypes was verified by FISH. Results: The results showed that compared with that on the skin surface of Banjiao goats, melanin deposition on the skin surface of Youzhou Dark goats was abnormally increased. The transcriptomic analyses showed that the expression of the ASIP genes decreased significantly in Youzhou Dark goats. FISH confirmed that the expression of the ASIP gene in Youzhou Dark goats was significantly lower than that in Banjiao goats. Conclusion: The present study showed that a decrease in ASIP gene expression and an increase in melanin production are important factors associated with skin pigmentation in Youzhou Dark goats. [J Adv Vet Anim Res 2024; 11(4.000): 1139-1148]
显示更多 [+] 显示较少 [-]Effect of narrowband ultraviolet B (311 nm) exposure on skin carcinogenesis in Wistar rats 全文
2024
Roro Inge Ade Krisanti | Septelia Inawati Wanandi | Puspita Eka Wuyung | Aida S. D. Hoemardani
Objective: The aim of this study is to determine narrowband UVB (NB-UVB) irradiation's effect on the promotion of skin cancer, particularly its effect on DNA damage, oxidative stress, inflammation, and histological changes in Wistar rat skin. Materials and Methods: Wistar rats were selected for this study and randomly divided into control, dimethylbenzanthracene (DMBA), and DMBA+NB-UVB groups. The rats were given a single dose of DMBA and exposed to NB-UVB 3 times a week for 10 weeks. The radiation dose started with 1 minimal erythema dose, which is equivalent to 3.192 J/cm². In the 11th week, analysis on cyclobutene pyrimidine dimer (CPD), malondialdehyde (MDA), nuclear factor kappa-B (NFκB), inflammatory cytokines, and histopathology examination of the skin tissue was conducted. Results: Higher CPD, MDA, NFκB, tumor necrosis factor a (TNF-a), interleukin (IL)-6, IL-11, IL-10, and IL-12 levels in rats exposed to DMBA+NB-UVB for 10 weeks compared to control and DMBA groups. Macroscopic examination presented erythema, skin thickening, desquamation, ulcer, and crust. Histopathology examination showed hyperkeratosis, acanthosis, atypical keratinocytes,irregular arrangement of the basement membrane, and inflammatory cell infiltration in the DMBA+NB-UVB group. Conclusion: This research has shown that 10 weeks of a combination of DMBA and NB-UVB irradiation induced DNA damage, oxidative stress, inflammation, and histological changes in the Wistar rat skin. [J Adv Vet Anim Res 2024; 11(4.000): 1105-1113]
显示更多 [+] 显示较少 [-]The salutary action of vitamin E on reproductive performance and renal functions in cadmium-exposed male mice 全文
2024
Mahabub Alam | Afrina Mustari | Samia Rashid | Shaima Alam Shimu | Tazmim Akter | Airin Akter | Mohammad Alam Miah | Emdadul Hauqe Chowdhury
Objectives: The research is based on the assessment of the beneficial role of vitamin E (vit-E) supplementation on the reproductive and renal functions in Cadmium (Cd)-exposed male mice. Materials and Method: Mice (n = 15 in each group) were kept untreated (Group A) or fed with cadmium chloride (CdCl2) (3.5 mg/kg, Group B) per day or both CdCl2 (3.5 mg/kg) with vit-E supplementation (200 mg/kg, Group C) daily for 60 days. Mice were euthanized, blood samples were collected, and serum was prepared for biochemical and hormonal analysis. Sperm motility, sperm concentration, testis weight, and diameter were taken. Tissues from the kidneys and testicles were collected in 10% neutral buffered formalin for histotexture study. Results: Cd treatment reduced the serum thyroxine (T4) and testosterone levels, but vit-E supplementation increased both T4 and testosterone levels in the Cd-treated mice. Cd treatment decreased sperm motility and concentration, testicular weight, and diameter, and induced degenerative changes in the seminiferous tubules, which significantly improved upon vit-E supplementation. Increased serum urea, uric acid, and creatinine concentrations, along with cellular infiltration in the renal tubular epithelium and glomerular hyperplasia, were found in the Cd-treated mice, which were not found in the vit-E-supplemented mice. Conclusion: The study points to the harmful consequences of Cd on reproductive performance and renal functions that could potentially be mitigated upon vit-E supplementation in the diet. [J Adv Vet Anim Res 2024; 11(4.000): 1057-1065]
显示更多 [+] 显示较少 [-]