Journal of the South African Veterinary Association-Tydskrif Van Die Suid-A最新文献

{"title":"The effect of a warmed enema during ovum pick-up on subsequent <i>in vitro</i> oocyte maturation in Southern white rhinoceros <i>(Ceratotherium simum simum)</i>.","authors":"L Vorster, P R de Bruin, M P Smuts, B S Durrant, M de la Rey, C Herbst, D E Holm","doi":"10.36303/JSAVA.623","DOIUrl":"10.36303/JSAVA.623","url":null,"abstract":"<p><strong>Background: </strong>Rhinoceros are currently one of the most threatened mammal species globally. Slow population growth, increased poaching and habitat destruction have led to increased conservation efforts for each species. Assisted reproductive technologies (ART) have been implemented in an attempt to aid reproductive outputs for the conservation of these endangered species. Developing species-specific ART programmes for wildlife have been challenging. Temperature control during oocyte recovery is essential for ensuring <i>in vitro</i> success.</p><p><strong>Objective: </strong>This study is the first to investigate the effect of enema warming prior to trans-rectal ovum pick-up (OPU) on <i>in vitro</i> oocyte maturation in Southern white rhinoceros <i>(Ceratotherium simum simum)</i>.</p><p><strong>Methods: </strong>OPUs were performed on 20 rhinoceros cows from three different game farms in South Africa; oocytes were transported to one of two <i>in vitro</i> fertilisation laboratories for culture. The enema fluid was either warmed to 32 °C or not warmed prior to the OPU. Location of the farm, the different laboratories, ambient temperature, season, aspiration probe temperature, media type and enema temperature were investigated as predictor variables for oocyte maturation success.</p><p><strong>Results: </strong>After considering all other potential covariates, warming of the enema fluid was the only independent predictor of <i>in vitro</i> oocyte maturation success during this study.</p><p><strong>Conclusion: </strong>Oocytes retrieved from rhinoceros cows that received an enema warmed to 32 °C were 2.3 times more likely to mature <i>in vitro</i> compared to oocytes from cows that received an unwarmed enema; the findings can be implemented in other rhinoceros ART programmes and in conservation efforts of other endangered mammalian species.</p>","PeriodicalId":51105,"journal":{"name":"Journal of the South African Veterinary Association-Tydskrif Van Die Suid-A","volume":" ","pages":"71-76"},"PeriodicalIF":0.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142156587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Animal rabies in Mozambique: a retrospective study with focus on dog rabies and vaccination coverage.","authors":"S Bilaide, Q Nicolau, L Mapaco, F Rodrigues, A Pondja Júnior, J Deve, C Sabeta, A Bauhofer, A Chilundo, J Fafetine, D Abernethy, M Mapatse","doi":"10.36303/JSAVA.639","DOIUrl":"10.36303/JSAVA.639","url":null,"abstract":"<p><p>Rabies, a highly preventable zoonotic disease, remains a major public health problem in Mozambique with approximately 50 human fatalities per annum due to dog-mediated rabies. This study analysed animal rabies cases and dog vaccination coverage, confirmed between 2001 and 2021, based on history, clinical signs, and/or diagnostic tests. During this period, 955 animal rabies cases were reported with the highest occurrence in Maputo (<i>n</i> = 283; 29.6%) and the lowest from Zambézia and Sofala provinces (<i>n</i> = 30; 3.1%). A significant number of animal rabies cases occurred in 2005 (<i>n</i> = 180; 18.8%). Most cases were identified in domestic dogs (<i>n</i> = 766; 80.2%). During the same period, 4.6 million dogs were vaccinated against rabies and the countrywide coverage was 10.4%. The total number of vaccinations administered increased over the 21-year period, from 46 301 in 2001 to a peak of 464 780 in 2018 before slightly declining in subsequent years. Rabid dogs are still important reservoirs and vectors species in Mozambique. More effective control measures, surveillance, reporting and enhanced awareness programmes are needed to address this neglected disease and consequently meet the global strategic plan to end human deaths due to dog-mediated rabies by 2030.</p>","PeriodicalId":51105,"journal":{"name":"Journal of the South African Veterinary Association-Tydskrif Van Die Suid-A","volume":"95 2","pages":"42-49"},"PeriodicalIF":0.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143494804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of lead shielding on gamma radiation scatter energy spectrum during equine bone scintigraphy.","authors":"U C M Kafka, P Beukes, J P Slabbert, A Carstens","doi":"10.36303/JSAVA.546","DOIUrl":"10.36303/JSAVA.546","url":null,"abstract":"<p><p>The main aim of this pilot study was to determine how the energy spectrum of scatter radiation emitted from horses after injection of the radiopharmaceutical ^99mTechnetium-methyl diphosphonate (^99mTc-MDP), changed behind lead shielding of varying thicknesses (0.25 mm, 0.35 mm, and 0.5 mm Pb thickness), and if beam hardening occurred. The effect lead shielding has on the emitted gamma radiation energy spectrum has not been documented. In particular, the presence of beam hardening effects behind lead shielding was investigated, to determine whether or not it could discourage the use of lead shields during bone scintigraphy in horses. Horses were injected intravenously with ^99mTc-MDP, and energy spectra emitted from horses without lead shielding were recorded initially to determine the emitted scatter spectrum. Thereafter, different combinations of lead shields of the various thicknesses listed above, draped over the horse and on simulated personnel, were recorded. The energy spectra were obtained at different anatomical locations of five horses on five consecutive days with a pulse height (multichannel) analyser two and a half hours post-injection. Energy spectra recorded from horses without lead shielding showed polychromatic energy spectra that encompassed a large portion of predominantly lower scatter energies (averaging around the 88-94 keV peaks). Higher ^99mTc- MDP peaks averaging at 139-143 keV (useful for gamma camera acquisition) were consistently seen in all recordings but made up a very small part of the emitted spectra. With the application of lead shielding, peaks of 83-86 keV, which coincided with K-edges of lead, occurred. No significant beam hardening effects behind lead shields of varying thicknesses were observed. Thus, the wearing of lead shields during bone scintigraphy of horses is encouraged.</p>","PeriodicalId":51105,"journal":{"name":"Journal of the South African Veterinary Association-Tydskrif Van Die Suid-A","volume":" ","pages":"63-70"},"PeriodicalIF":0.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142156582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cytological and histopathological bone marrow findings in dogs with natural <i>Babesia rossi</i> infection.","authors":"M M Bumby, S J Clift, E H Hooijberg, A L Leisewitz","doi":"10.36303/JSAVA.626","DOIUrl":"https://doi.org/10.36303/JSAVA.626","url":null,"abstract":"<p><p>An inappropriate regenerative response to anaemia has been reported in <i>B. rossi</i>-associated canine babesiosis. We investigated the impact of canine babesiosis on the bone marrow by evaluating the cytological and histopathological changes. Bone marrow smears and histopathology specimens were obtained post-mortem (within 24 hours of death) from six <i>Babesia rossi</i>-infected dogs and five healthy control dogs. Findings were interpreted together with the circulating haemogram, a Perls' Prussian blue special stain for iron and immunohistochemical markers CD3, CD20, MUM-1, MAC387 and CD204. Infected dogs had an inflammatory leukogram, inappropriately regenerative anaemia, hypercellular bone marrow due to erythroid hyperplasia, dyserythropoietic changes within the metarubricyte population, a myeloid hyperplasia with a left shift, a significant increase in the number of CD204-positive resident macrophages, a left shift within the megakaryocyte population and a significantly increased iron content. Whether iron-restricted erythropoiesis plays a role in the anaemia of canine babesiosis could not be established in this study. Our findings concur with what has been recorded in the bone marrow of humans with falciparum malaria and confirm that dyserythropoiesis is partially responsible for the inappropriate erythroid response in canine babesiosis.</p>","PeriodicalId":51105,"journal":{"name":"Journal of the South African Veterinary Association-Tydskrif Van Die Suid-A","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143494717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surgical management of cranial cruciate ligament rupture and concurrent medial patellar luxation in a small breed dog by means of a modified cranial closing wedge ostectomy and tibial tuberosity transposition.","authors":"C F Triegaardt, R C Elliott, S H Naude, A M Kitshoff","doi":"10.36303/JSAVA.649","DOIUrl":"https://doi.org/10.36303/JSAVA.649","url":null,"abstract":"<p><p>Medial patella luxation (MPL) is a common cause of hindlimb lameness in small breed dogs and is associated with concurrent cranial cruciate ligament (CCL) rupture in up to 40% of cases. This case report describes a surgical technique that addressed both conditions concurrently. A four-year-old castrated, male Yorkshire Terrier presented with a chronic (two months) intermittent grade 3/5 lameness of the right pelvic limb that progressed to an acute non-weight bearing grade 5/5 lameness (Impellizeri et al. 2000). A clinical diagnosis of a grade 3 MPL and a concurrent CCL rupture of the right pelvic limb was made. A modified cranial closing wedge ostectomy (mCCWO) and a tibial tuberosity transposition (TTT), with a wedge trochleoplasty, were performed. The patient recovered uneventfully, and no lameness was detected at six weeks follow-up. No lameness or other incidents were reported by the owner on telephonic contact three months postoperatively. A follow-up clinical evaluation and lameness examination were performed at 12 months, and there was, subjectively, no visible lameness, and the radiographs showed radiographic union. This surgical technique has been shown to be an effective and viable option in this small breed patient to treat both conditions in one surgical procedure, but warrants further investigation with larger case numbers.</p>","PeriodicalId":51105,"journal":{"name":"Journal of the South African Veterinary Association-Tydskrif Van Die Suid-A","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143494789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Detection and quantification of antibiotic residues in goat milk in Mahikeng Local Municipality.","authors":"K L Ndlovu, M Mwanza, N Nleya, L Ngoma","doi":"10.36303/JSAVA.583","DOIUrl":"https://doi.org/10.36303/JSAVA.583","url":null,"abstract":"<p><p>Goat milk could be used to reduce malnutrition since it is highly nutritious, and many people in rural communities in South Africa rear small ruminants for survival. However, the risk of food contamination by antibiotic residues is one of the significant problems facing public health, and is a result of the irresponsible use of veterinary drugs. One hundred goat farmers were interviewed using a questionnaire, and raw milk samples from 266 goats were collected and analysed for the presence of antibiotic residues. Screening for amoxicillin, tetracycline, sulfamethazine, erythromycin, and streptomycin residues was done using the enzymelinked immunosorbent assay (ELISA) while high-performance liquid chromatography (HPLC) was carried out for confirmation. The questionnaire shows that all (100%) of the participants acknowledged the use of antibiotics on their goats and 99% of them were aware of the possibility of antibiotic residues in milk. ELISA results for residues of erythromycin, sulfamethazine and amoxicillin exceeded the <i>Codex Alimentarius</i> maximum residue levels (MRLs) in 94.7%, 82.3%, and 35.3% of analysed samples, respectively. Tetracycline was present in all (100%) analysed milk samples, and streptomycin was detected in 18.7% of samples; however, these results were below the recommended MRLs. The HPLC method confirmed the presence of streptomycin and tetracycline residues in 90% and 40% of the samples analysed. However, the concentrations were below the accepted MRL standards. Approximately 76.6% of samples exceeded the established MRL for sulfamethazine and 10% for erythromycin. Amoxicillin was not detected by the HPLC method. The results obtained in this study indicate a high level of contamination of goat milk with antibiotic residues, which may harm the health of the consumers.</p>","PeriodicalId":51105,"journal":{"name":"Journal of the South African Veterinary Association-Tydskrif Van Die Suid-A","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142156581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The time course of lactate and endocrine changes in dogs suffering from dog bite wounds.","authors":"E van Zyl, P N Thompson, J P Schoeman","doi":"10.36303/JSAVA.596","DOIUrl":"https://doi.org/10.36303/JSAVA.596","url":null,"abstract":"<p><strong>Background: </strong>The stress response after acute trauma in humans and animals has been well-recognised in the literature. However, data on temporal changes in endocrine parameters after acute trauma in previously healthy dogs are scant.</p><p><strong>Objective: </strong>To longitudinally track endocrine variables and lactate concentrations in dogs with canine bite wounds.</p><p><strong>Method: </strong>Prospective study involving 20 dogs hospitalised after being bitten by another dog. Serum cortisol, thyroxine (total T4), thyrotropin (TSH), and lactate concentrations were measured on admission and every 8 hours after the recorded bite incident, for a 72-hour period.</p><p><strong>Results: </strong>Median cortisol concentration was markedly elevated on admission (314.6 nmol/L; IQR 229.3-369.6) but returned to within the reference interval by 16 hours post-bite (99.5 nmol/L; IQR 48.7-225.4) and reached a nadir at 48 hours post-bite (38.5 nmol/L; IQR 32.1-115.9). Median total T4 concentration was within the reference interval on admission (20.6 nmol/L; IQR 12.7-27.9) but decreased below the reference interval by 8 hours (11.0 nmol/L; IQR 5.0-14.1) and reached a nadir 16 hours postbite (7.0 nmol/L; IQR 2.9-19.7), before gradually increasing after 64 hours to reach the reference range by 72 hours. The median TSH concentrations remained within the reference interval throughout the study period. Median lactate concentration was mildly elevated on admission (3.0 mmol/L; IQR 2.0-3.9).</p><p><strong>Conclusion: </strong>This study produced novel data on the temporal relationships of the hypothalamic-pituitary-adrenal and hypothalamicpituitary- thyroidal axes alterations after an acute traumatic insult in dogs.</p>","PeriodicalId":51105,"journal":{"name":"Journal of the South African Veterinary Association-Tydskrif Van Die Suid-A","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142156588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of the immobilisation and cardiorespiratory effects of thiafentanil-azaperone versus thiafentanil-medetomidine-azaperone in African buffalo (<i>Syncerus caffer</i>).","authors":"V E Faber, R E J Burroughs, L C R Meyer, H J Hansen, D Gerber, K N Koeppel","doi":"10.36303/JSAVA.587","DOIUrl":"https://doi.org/10.36303/JSAVA.587","url":null,"abstract":"<p><p>African buffalo (<i>Syncerus caffer</i>) are frequently immobilised for veterinary interventions, disease screening and translocations. Concerns over user and animal safety, costs, and irregularities in opioid supply, have led to the development of alternative immobilisation protocols. This study compared immobilisation of 12 boma-habituated African buffalo with thiafentanil-azaperone (TA) vs. thiafentanil-medetomidine-azaperone (TMA) in a randomised crossover study. Each buffalo received a combination of thiafentanil (6-7 mg) + azaperone (40 mg) and thiafentanil (1 mg) + medetomidine (3-4 mg) + azaperone (40 mg) with a three-week washout period between immobilisations. Induction and recovery times were recorded, quality of induction and immobilisation were scored subjectively, and physiological variables were monitored. The TMA combination induced immobilisation with 1/7th of the TA thiafentanil dose and at a quarter of the cost. Induction times for the TA combination were significantly faster at 5.7 ± 1.6 min and more reliable compared to the TMA combination at 10.95 ± 3.9 min. Both combinations resulted in severe hypoxaemia, however hypoxaemia was overall more pronounced in the TMA (PaO₂ 44 ± 14 mmHg) combination compared to the TA (PaO₂ 51 ± 13,33 mmHg) combination and resulted mainly from decreased pulmonary oxygen exchange rather than hypoventilation; PaCO₂ values were mostly within the normal expected physiological range. Supplementary oxygen and close monitoring of blood oxygenation is considered essential with either combination. Although the reduction in costs could be beneficial for the wildlife industry, longer induction times, and risks from severe hypoxaemia need to be taken into consideration when the TMA combination is used.</p>","PeriodicalId":51105,"journal":{"name":"Journal of the South African Veterinary Association-Tydskrif Van Die Suid-A","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143494715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retrospective case-control non-inferiority analysis of ultrasound-guided erector spinae plane block in dogs undergoing mini-hemilaminectomy for intervertebral disc disease.","authors":"D N Alza Salvatierra, L Motta, J I Redondo, M du Toit, E Pompermaier, M Martinez","doi":"10.36303/JSAVA.600","DOIUrl":"https://doi.org/10.36303/JSAVA.600","url":null,"abstract":"<p><strong>Background: </strong>Veterinary medicine has seen significant advancements in locoregional anaesthesia and pain management, including the emergence of the erector spinae plane (ESP) block. However, limited clinical evidence exists on its efficacy and safety.</p><p><strong>Objectives: </strong>This study compares ultrasound-guided ESP block (ESP group) with an intraoperative intravenous ketamine infusion analgesic protocol (CRI group) in dogs undergoing thoracolumbar mini-hemilaminectomy, focusing on intraoperative opioid consumption, cardiovascular response to surgical stimulation (CR), postoperative pain scores (PS), and postoperative opioid consumption.</p><p><strong>Methods: </strong>Retrospective, case-control, non-inferiority study conducted in a single centre. Data collected included demographics, bupivacaine dose, ESP block operator, intraoperative recorded variables (haemodynamic variables, CR, complications, rescue analgesia), pre- and postoperative analgesia, 24-hour PS and opioid administration, first food intake post-extubation and postoperative complications. Univariate and multiple regression analyses were applied.</p><p><strong>Results: </strong>One-hundred dogs were included, 75 in the ESP group and 25 in the CRI group. Univariate analysis revealed no significant differences between treatment groups in terms of CR, PS, postoperative rescue analgesia, intraoperative and postoperative opioid consumption, or time to first meal intake. However, the multivariate regression analysis indicated that dogs receiving ketamine infusion had higher CR suspected to be nociception-related (<i>p</i> = 0.036), and higher postoperative opioid consumption (<i>p</i> = 0.013).</p><p><strong>Conclusion: </strong>Our study suggests that ultrasound-guided ESP block is as effective as intraoperative ketamine infusion providing perioperative analgesia in dogs undergoing thoracolumbar mini-hemilaminectomy for intervertebral disc disease. ESP group showed significantly lower CR suspected to be nociception-related intraoperatively and lower postoperative opioid consumption within the initial 24 hours.</p>","PeriodicalId":51105,"journal":{"name":"Journal of the South African Veterinary Association-Tydskrif Van Die Suid-A","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142156586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Helminth parasites of impalas, <i>Aepyceros melampus</i>, in eastern southern Africa, collected during 1973 to 2007.","authors":"I G Horak, K Junker, L E O Braack, G J Gallivan","doi":"10.36303/JSAVA.615","DOIUrl":"https://doi.org/10.36303/JSAVA.615","url":null,"abstract":"<p><p>This paper summarises published and unpublished data on helminths collected systematically from 424 impalas at 11 localities in eastern southern Africa, from St. Lucia in KwaZulu-Natal (KZN) to the Tuli Block in north-eastern Botswana. It includes data on collections in the Kruger National Park (KNP) in the drought of 1982, and in 1992/93 following the 1991/92 drought. Thirty-three species of nematodes, plus six taxa identified only to the generic level, three taxa of trematodes, and three species of cestodes were collected. Helminth species richness was highest in the southern KNP and lowest in the Tuli Block. The prevalence and intensity of infection of several helminths also declined from KZN and the southern KNP to the drier areas in the north and west. With the exception of St. Lucia and Nylsvley, > 80% of the helminths collected at each locality were collected in the southern KNP. St. Lucia was the most dissimilar locality; of the 20 helminths collected, five were unique. Ten of 33 species of nematodes, the paramphistomines (Trematoda) and the cestode <i>Stilesia hepatica</i> were collected at seven or more localities. Six of the most common nematodes, <i>Cooperia hungi, Cooperioides hamiltoni, Impalaia tuberculata, Longistrongylus sabie, Strongyloides papillosus</i> and <i>Trichostrongylus deflexus</i> are primarily parasites of impalas in the southern KNP, whereas many of the helminths collected at only one or two localities are parasites of other hosts. Nematode burdens were increased in the drought affected impalas in 1982, but helminth burdens decreased in 1992/93 following a dry cycle.</p>","PeriodicalId":51105,"journal":{"name":"Journal of the South African Veterinary Association-Tydskrif Van Die Suid-A","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142156583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}