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Management of horn gore injury and urticaria in a dairy cow: A case report Полный текст
2015
Tijjani, Abdul Nasir | Muhammad, Abubakar Sadiq | Mohammed, Konto | Abba, Yusuf | Chung, Eric Lim Teik Chung Lim Teik | Adamu, Lawan | Osman, Abdinasir Yusuf | Saharee, Abdul Aziz | Lila, Mohammed Azmi Mohammed | Haron, Abdul Wahid | Abdullah, Faez Firdaus Jesse
Management of horn gore injury and urticaria in a dairy cow: A case report Полный текст
2015
Tijjani, Abdul Nasir | Muhammad, Abubakar Sadiq | Mohammed, Konto | Abba, Yusuf | Chung, Eric Lim Teik Chung Lim Teik | Adamu, Lawan | Osman, Abdinasir Yusuf | Saharee, Abdul Aziz | Lila, Mohammed Azmi Mohammed | Haron, Abdul Wahid | Abdullah, Faez Firdaus Jesse
This paper reports how a 4-year old Friesien-Sahiwal cross cow weighing 380 kg with horn gore injury on the left labia of the vulva was managed at the Large Animal Clinic, University Putra Malaysia. The lacerated wound measuring about 4-cm long was originated as a result of horn goring from another cow two weeks prior presentation of the cow to the clinic. Physical examination of the cow incidentally revealed urticaria on the left ventro-lateral aspect of the neck suspected to be sequel of hypersensitivity. The wound was treated by topical application of a mixture of Iodine, Benacillin LA, Biomectin 1% and Ilium Dermapred made into cream. While the uticaria was treated by intramuscular injection of Chlorpheniramine maleate at 0.5 mg/kg bwt. Animal management, housing design and presence of sharp horns are some of the factors that can lead to physical traumatic injuries in dairy cows. http://dx.doi.org/10.5455/javar.2015.b93
Показать больше [+] Меньше [-]Management of horn gore injury and urticaria in a dairy cow: A case report Полный текст
2015
Abdul Nasir Tijjani | Abubakar Sadiq Muhammad | Konto Mohammed | Yusuf Abba | Eric Lim Teik Chung | Lawan Adamu | Abdinasir Yusuf Osman | Abdul Aziz Saharee | Mohammed Azmi Mohammed Lila | Abdul Wahid Haron | Faez Firdaus Jesse Abdullah
This paper reports how a 4-year old Friesien-Sahiwal cross cow weighing 380 kg with horn gore injury on the left labia of the vulva was managed at the Large Animal Clinic, University Putra Malaysia. The lacerated wound measuring about 4-cm long was originated as a result of horn goring from another cow two weeks prior presentation of the cow to the clinic. Physical examination of the cow incidentally revealed urticaria on the left ventro-lateral aspect of the neck suspected to be sequel of hypersensitivity. The wound was treated by topical application of a mixture of Iodine, Benacillin LA, Biomectin 1% and Ilium Dermapred made into cream. While the uticaria was treated by intramuscular injection of Chlorpheniramine maleate at 0.5 mg/kg bwt. Animal management, housing design and presence of sharp horns are some of the factors that can lead to physical traumatic injuries in dairy cows. [J Adv Vet Anim Res 2015; 2(3.000): 366-368]
Показать больше [+] Меньше [-]Surgical management of agenesis of the vulva with atresia ani-et-distal recti in a heifer calf: A case report Полный текст
2015
Wamaitha, Moses N | Kihurani, David O | Kimeli, Peter | Mwangi, Willy E | Mande, John D
Surgical management of agenesis of the vulva with atresia ani-et-distal recti in a heifer calf: A case report Полный текст
2015
Wamaitha, Moses N | Kihurani, David O | Kimeli, Peter | Mwangi, Willy E | Mande, John D
Successful surgical intervention of atresia ani-etdistal recti with agenesis of vulva in a heifer calf is reported in this paper. The calf aging 1-day waspresented with a history of swelling at the perinealregion. In clinical examination, both vulval and analopenings were found absent. Initial surgicaloperation under sedation and local anesthesia wasdone to correct these abnormalities. As a result, thecalf could urinate, but attempted defecation was notsuccessful. Surgical operation was done again at theanal region to resolve this condition. Post-operatively,tetracycline spray was applied on both surgicalwounds immediately after surgery, and repeatedtwice daily for 10 days. Amoxicillin trihydrate (at 750mg/kg bwt) and Phenylbutazone (at 400 mg/kg bwt)were administered intramuscularly once, and thetreatment was repeated on every alternate day up to10 days of post-surgery. Finally, the calf was able tourinate and defecate normally, and the surgicalwounds healed uneventfully within 14 days.http://dx.doi.org/10.5455/javar.2015.b95
Показать больше [+] Меньше [-]Surgical management of agenesis of the vulva with atresia ani-et-distal recti in a heifer calf: A case report Полный текст
2015
Moses N Wamaitha | Obadiah D Kihurani | Peter Kimeli | Willy E Mwangi | John D Mande
Successful surgical intervention of atresia ani-et-distal recti with agenesis of vulva in a heifer calf is reported in this paper. The calf aging 1-day was presented with a history of swelling at the perineal region. In clinical examination, both vulval and anal openings were found absent. Initial surgical operation under sedation and local anesthesia was done to correct these abnormalities. As a result, the calf could urinate, but attempted defecation was not successful. Surgical operation was done again at the anal region to resolve this condition. Post-operatively, tetracycline spray was applied on both surgical wounds immediately after surgery, and repeated twice daily for 10 days. Amoxicillin trihydrate (at 750 mg/kg bwt) and Phenylbutazone (at 400 mg/kg bwt) were administered intramuscularly once, and the treatment was repeated on every alternate day up to 10 days of post-surgery. Finally, the calf was able to urinate and defecate normally, and the surgical wounds healed uneventfully within 14 days. [J Adv Vet Anim Res 2015; 2(3.000): 369-372]
Показать больше [+] Меньше [-]Coenzyme Q10 and soyphosphatidylcholine in EK extender on preservation of Rhode Island Red poultry semen Полный текст
2015
Nath, Amit Kumar | Basu, Siddharhta | Datta, Uttam
The objective of this study was to evaluate the efficacy of EK extender alone or incorporation with CoenzymeQ10 (CoQ10) and/or soyphosphatidylcholine (SPC) in poultry semen and their effects on seminal traits during temporal storage at 4?C for different time intervals (12 h, 24 h, and 36 h). Heterospermic pooled semen samples diluted (1:4) with EK, EK + SPC, EK+ CoQ10 and EK + SPC + CoQ10 extenders separately, preserved and different spermiogram were assessed. Various seminal traits within the same extender differ significantly (p<0.05) among different groups and with different time intervals of storage. CoQ10 and SPC in the EK extender exhibited favorable synergistic effect on sperm quality and were able to protect the male gametes against cold-stress up to 36h at 4?C. In this study, we concluded that incorporation of SPC and CoQ10 together in EK extender possess novel potentiality to maintain seminal quality during liquid storage of poultry semen at 4?C and for their safe transportation and further use for Artificial Reproductive technologies (ARTs). http://dx.doi.org/10.5455/javar.2015.b62
Показать больше [+] Меньше [-]Adaptation to the waste anesthesia gas system: Gaps in knowledge and opportunities for positive environmental impact Полный текст
2015
Palmisano, John | Deininger, Michael
Canisters containing activated charcoal are commonly used in the laboratory setting to collect waste anesthetic gas (WAG). This requires the weighing of the WAG canister after each use and for investigators to maintain an accurate time log of anesthesia duration. A typical rodent anesthesia station may include the use of 3 WAG canisters; one for the anesthesia induction box, one for the operative table, and one for gas monitoring. To simplify the anesthesia breathing circuit, we have developed a T connector that replaces the need for having multiple WAG canisters. The T connector directs the waste anesthetic from multiple sources; the anesthesia induction box, operative table and gas monitor into a single WAG canister. Use of the T connector appears to be a safe, acceptable device that conveniently directs waste gas while improving charcoal adsorption within the canister. In addition, this device may have a positive impact on the environment with a secondary benefit of possible cost savings associated with the purchase and disposal of the hazardous waste contents. http://dx.doi.org/10.5455/javar.2015.b106
Показать больше [+] Меньше [-]Hemotropic Mycoplasma ovis infection in goats with concurrent gastrointestinal parasitism in Malaysia Полный текст
2015
Jesse, Faez Firdaus Abdullah | Bt Abu Jazid, Nurul Hafizah | Mohamme, Konto d | Tijjani, Abdulnasir | Chung, Eric Lim Teik | Abba, Yusuf | Sadiq, Muhammad Abubakar | Saharee, Abdul Aziz
Hemotropic Mycoplasmosis is common in sheep and goats worldwide, which leads to huge economic losses. In this study, ten goats each were sampled from five herds belonging to the Ladang Angkat, Faculty of Veterinary Medicine (FVM) for the assessment of Mycoplasma ovis infection and concomitant intestinal parasites burden. Giemsa stain and Modified McMaster techniques were used to study the hemotropic mycoplasmosis and gastrointestinal parasite burden, respectively. Questionnaires were equally administered to each farmer and a fly trap was used to trap biting flies around the goat herds. Out of 50 samples analyzed, 94.0% ( n = 47/50) were positive for M. ovis infection. Among the positive samples, 93.6% (n=44/47) were mild infection while 6.4% (n=3/47) were moderate infection, with highest infection rate of 38.5% parasitemia. There was a significant association (P<0.05) between infection status and parasites burden. However, there was a weak positive correlation (r=0.107, P=0.460) between M. ovis infection rates and parasitic burden. Though a high occurrence rate of M. ovis was observed among the infected goats, the levels of parasitemia were generally mild.http://dx.doi.org/10.5455/javar.2015.b119
Показать больше [+] Меньше [-]Hypothyroid associated megaesophagus in dogs: four years (2009- 2013) study in Hyderabad, India Полный текст
2015
Kumar, Karlapudi Satish | Srikala, Devarakonda
Megaoesophagus is uncommon but an important consideration for chronic regurgitation in dogs. Five dogs of various breeds were presented to the Teaching Veterinary Clinical Complex (TVCC) at College of Veterinary Science, Hyderabad with signs of chronic regurgitation, loss of weight, lethargy, weakness, dehydration and abnormalities of skin, and hair coat were diagnosed for megaesophagus on barium meal contrast radiography. At the TVCC, radiography and gastroscopy were performed, and the condition was confirmed as megaesophagus. Ancillary hemato-biochemical evaluations revealed normocytic normochromic anemia and mild leukocytosis with normal enzymatic activity in liver and kidneys. The thyroid profile in 80% (n=4/5) dogs showed decreased T3 and T4, and elevated thyroid stimulating hormone (TSH) levels confirming hypothyroidism. Ultrasonography of abdomen eliminated obstructions in the gastro-intestinal tract and other systemic conditions. Echocardiographic observations were normal in all the dogs. Treatment with metoclopramide (dosed at 5 mg/kg bwt) and levothyroxine (dosed at 20 ?g/kg bwt) and modified management practices involving feeding and diets were successful in controlling the regurgitation in dogs and resulted in good clinical recovery within 20- 30 days of post-treatment.http://dx.doi.org/10.5455/javar.2015.b69
Показать больше [+] Меньше [-]Prevalence of salivary gland hypertrophy syndrome in laboratory colonies and wild flies of Glossina pallidipes in Ethiopia Полный текст
2015
Yimer, Mahder M. | Bula, Dereje G. | Tesama, Tsegabirhan K. | Tadesse, Kassaw A. | Abera, Birhanu H. | Kaliti Tsetse Mass Rearing and Irradiation Centre, Ethiopia
Prevalence of salivary gland hypertrophy syndrome in laboratory colonies and wild flies of Glossina pallidipes in Ethiopia Полный текст
2015
Yimer, Mahder M. | Bula, Dereje G. | Tesama, Tsegabirhan K. | Tadesse, Kassaw A. | Abera, Birhanu H. | Kaliti Tsetse Mass Rearing and Irradiation Centre, Ethiopia
Glossina pallidipes salivary gland hyperplasia (GpSGH) syndrome caused by the salivary gland hyperplasia virus reduces the reproduction potential of tsetse flies, posing a serious threat for rearing of sufficient colonies for use of tsetse and trypanosome control using the sterile insect technique. This research was conducted in the Kaliti Tsetse Mass Rearing and Irradiation Centre in Ethiopia with the objective of studying the prevalence of GpSGH syndrome in laboratory colonies of G. pallidipes (Tororo and Arbaminch) reared for release in the implementation of the sterile insect technique and a field strain of G. pallidipes Arbaminch. Presence or absence of GpSGH was determined when pathological features of the salivary gland were revealed after dissection. The overall prevalence of GpSGH syndrome in laboratory colonies was 48.3% (747/1548) with a statistically significant (z = 17.30, p = 0.001) prevalence of 70.2% (544/775) in Arbaminch colonies and 26.26% (203/773) in Tororo colonies. The prevalence of GpSGH in laboratory flies fed according to the clean blood feeding protocol was 68.9% and 22.4% in Arbaminch and Tororo strains respectively. It was 70.5% and 27.2% respectively in laboratory colonies of Arbaminch and Tororo strains fed according to the standard membrane feeding protocol. The difference in prevalence of the disease between the two feeding protocols was not statistically significant in either Arbaminch (z = 0.361, p = 0.359) or Tororo (z = 1.22, p = 0.111) strains. The prevalence of SGH in wild G. pallidipes Arbaminch strain was 3% (15/500) and was significantly (z = 23.61, p 0.001) lower than in the laboratory strain. The effect of age and density-related stress on the development of GpSGH was not statistically significant. The prevalence of GpSGH in the newly emerging (teneral) flies in the laboratory colonies was 66.7% and 20% in the Arbaminch and Tororo strains respectively. For all considered risk factors, the prevalence was much higher in G. pallidipes Arbaminch laboratory colonies.
Показать больше [+] Меньше [-]Prevalence of salivary gland hypertrophy syndrome in laboratory colonies and wild flies of <i>Glossina pallidipes</i> in Ethiopia Полный текст
2015
Mahder M. Yimer | Dereje G. Bula | Tsegabirhan K. Tesama | Kassaw A. Tadesse | Birhanu H. Abera
Glossina pallidipes salivary gland hyperplasia (GpSGH) syndrome caused by the salivary gland hyperplasia virus reduces the reproduction potential of tsetse flies, posing a serious threat for rearing of sufficient colonies for use of tsetse and trypanosome control using the sterile insect technique. This research was conducted in the Kaliti Tsetse Mass Rearing and Irradiation Centre in Ethiopia with the objective of studying the prevalence of GpSGH syndrome in laboratory colonies of G. pallidipes (Tororo and Arbaminch) reared for release in the implementation of the sterile insect technique and a field strain of G. pallidipes Arbaminch. Presence or absence of GpSGH was determined when pathological features of the salivary gland were revealed after dissection. The overall prevalence of GpSGH syndrome in laboratory colonies was 48.3% (747/1548) with a statistically significant (z = 17.30, p = 0.001) prevalence of 70.2% (544/775) in Arbaminch colonies and 26.26% (203/773) in Tororo colonies. The prevalence of GpSGH in laboratory flies fed according to the clean blood feeding protocol was 68.9% and 22.4% in Arbaminch and Tororo strains respectively. It was 70.5% and 27.2% respectively in laboratory colonies of Arbaminch and Tororo strains fed according to the standard membrane feeding protocol. The difference in prevalence of the disease between the two feeding protocols was not statistically significant in either Arbaminch (z = 0.361, p = 0.359) or Tororo (z = 1.22, p = 0.111) strains. The prevalence of SGH in wild G. pallidipes Arbaminch strain was 3% (15/500) and was significantly (z = 23.61, p < 0.001) lower than in the laboratory strain. The effect of age and density-related stress on the development of GpSGH was not statistically significant. The prevalence of GpSGH in the newly emerging (teneral) flies in the laboratory colonies was 66.7% and 20% in the Arbaminch and Tororo strains respectively. For all considered risk factors, the prevalence was much higher in G. pallidipes Arbaminch laboratory colonies.
Показать больше [+] Меньше [-]Virulence gene profiles of avian pathogenic Escherichia coli isolated from chickens with colibacillosis in Bulawayo, Zimbabwe Полный текст
2015
Mbanga, Joshua | Nyararai, Yvonne O. | NUST research Board | INASP.
Virulence gene profiles of avian pathogenic Escherichia coli isolated from chickens with colibacillosis in Bulawayo, Zimbabwe Полный текст
2015
Mbanga, Joshua | Nyararai, Yvonne O. | NUST research Board | INASP.
Colibacillosis, a disease caused by avian pathogenic Escherichia coli (APEC), is one of the main causes of economic losses in the poultry industry worldwide. This study was carried out in order to determine the APEC-associated virulence genes contained by E. coli isolates causing colibacillosis in chickens. A total of 45 E. coli isolates were obtained from the diagnostics and research branch of the Central Veterinary Laboratories, Bulawayo, Zimbabwe. These isolates were obtained from chickens with confirmed cases of colibacillosis after postmortem examination. The presence of the iutA, hlyF, ompT, frz, sitD, fimH, kpsM, sitA, sopB, uvrY, pstB and vat genes were investigated by multiplex polymerase chain reaction (PCR) assay. Of the 45 isolates, 93% were positive for the presence of at least one virulence gene. The three most prevalent virulence genes were iutA (80%), fimH (33.3%) and hlyF (24.4%). The kpsM, pstB and ompT genes had the lowest prevalence, having been detected in only 2.2% of the isolates. All 12 virulence genes studied were detected in the 45 APEC isolates. Virulence gene profiles were constructed for each APEC isolate from the multiplex data. The APEC isolates were profiled as 62.2% fitting profile A, 31.1% profile B and 6.7% profile C. None of the isolates had more than seven virulence genes. Virulence profiles of Zimbabwean APEC isolates are different from those previously reported. Zimbabwean APEC isolates appear to be less pathogenic and may rely on environmental factors and stress in hosts to establish infection.
Показать больше [+] Меньше [-]Virulence gene profiles of avian pathogenic <i>Escherichia coli</i> isolated from chickens with colibacillosis in Bulawayo, Zimbabwe Полный текст
2015
Joshua Mbanga | Yvonne O. Nyararai
Colibacillosis, a disease caused by avian pathogenic Escherichia coli (APEC), is one of the main causes of economic losses in the poultry industry worldwide. This study was carried out in order to determine the APEC-associated virulence genes contained by E. coli isolates causing colibacillosis in chickens. A total of 45 E. coli isolates were obtained from the diagnostics and research branch of the Central Veterinary Laboratories, Bulawayo, Zimbabwe. These isolates were obtained from chickens with confirmed cases of colibacillosis after postmortem examination. The presence of the iutA, hlyF, ompT, frz, sitD, fimH, kpsM, sitA, sopB, uvrY, pstB and vat genes were investigated by multiplex polymerase chain reaction (PCR) assay. Of the 45 isolates, 93% were positive for the presence of at least one virulence gene. The three most prevalent virulence genes were iutA (80%), fimH (33.3%) and hlyF (24.4%). The kpsM, pstB and ompT genes had the lowest prevalence, having been detected in only 2.2% of the isolates. All 12 virulence genes studied were detected in the 45 APEC isolates. Virulence gene profiles were constructed for each APEC isolate from the multiplex data. The APEC isolates were profiled as 62.2% fitting profile A, 31.1% profile B and 6.7% profile C. None of the isolates had more than seven virulence genes. Virulence profiles of Zimbabwean APEC isolates are different from those previously reported. Zimbabwean APEC isolates appear to be less pathogenic and may rely on environmental factors and stress in hosts to establish infection.
Показать больше [+] Меньше [-]A postmortem study on indigestible foreign bodies in the rumen and reticulum of ruminants, eastern Ethiopia Полный текст
2015
Negash, Seifu | Sibhat, Berhanu | Sheferaw, Desie
A postmortem study on indigestible foreign bodies in the rumen and reticulum of ruminants, eastern Ethiopia Полный текст
2015
Negash, Seifu | Sibhat, Berhanu | Sheferaw, Desie
A cross-sectional study was conducted on ruminants (cattle, sheep and goats) slaughtered at Haramaya University and Haramaya municipal abattoirs from November 2013 to April 2014 in Haramaya, eastern Ethiopia. The objective of the study was to identify types and estimate the prevalence of foreign bodies in the rumen and reticulum of domestic ruminants in the area. From 810 randomly selected study animals, 422 (52.1%) were found to have foreign bodies. Of the 332 cattle, 193 sheep and 285 goats examined, 144 (43.4%), 109 (56.5%) and 169 (59.3%) respectively were found with various types of foreign bodies. The prevalence of foreign bodies was significantly (χ2 = 17.53, p 0.05) higher in sheep (59.3%) and goats (56.7%) than in cattle (43.4%). Overall the prevalence of foreign bodies in study animals with poor body condition was significantly higher (χ2 = 38.57, p 0.05) than in those with medium and good body condition. A higher percentage of foreign bodies occurred in the rumen alone (87.9%) than in the reticulum alone (5.0%), with the rest present in both. Significantly higher proportions of foreign bodies were observed in the rumen of cattle (χ2 = 332, p 0.05), sheep (χ2 = 193, p 0.05) and goats (χ2 = 285.0, p = 0.000) than in the reticulum. Plastic was the most commonly encountered (79.2%) foreign body, followed by cloth (15.3%) and rope (12.3%). In addition, metal (0.9%) and calcified material and/or stone (1.0%) were found in the reticulum of cattle. Lack of a plastic waste disposal system in the area as well as communal/free grazing of livestock in highly waste-polluted areas seemed to be major factors in the high occurrence of foreign bodies in ruminants. To change this, collaborative intervention schemes involving professionals, policy makers, livestock keepers and environmental activists are needed.
Показать больше [+] Меньше [-]A postmortem study on indigestible foreign bodies in the rumen and reticulum of ruminants, eastern Ethiopia Полный текст
2015
Seifu Negash | Berhanu Sibhat | Desie Sheferaw
A cross-sectional study was conducted on ruminants (cattle, sheep and goats) slaughtered at Haramaya University and Haramaya municipal abattoirs from November 2013 to April 2014 in Haramaya, eastern Ethiopia. The objective of the study was to identify types and estimate the prevalence of foreign bodies in the rumen and reticulum of domestic ruminants in the area. From 810 randomly selected study animals, 422 (52.1%) were found to have foreign bodies. Of the 332 cattle, 193 sheep and 285 goats examined, 144 (43.4%), 109 (56.5%) and 169 (59.3%) respectively were found with various types of foreign bodies. The prevalence of foreign bodies was significantly (χ2 = 17.53, p < 0.05) higher in sheep (59.3%) and goats (56.7%) than in cattle (43.4%). Overall the prevalence of foreign bodies in study animals with poor body condition was significantly higher (χ2 = 38.57, p < 0.05) than in those with medium and good body condition. A higher percentage of foreign bodies occurred in the rumen alone (87.9%) than in the reticulum alone (5.0%), with the rest present in both. Significantly higher proportions of foreign bodies were observed in the rumen of cattle (χ2 = 332, p < 0.05), sheep (χ2 = 193, p < 0.05) and goats (χ2 = 285.0, p = 0.000) than in the reticulum. Plastic was the most commonly encountered (79.2%) foreign body, followed by cloth (15.3%) and rope (12.3%). In addition, metal (0.9%) and calcified material and/or stone (1.0%) were found in the reticulum of cattle. Lack of a plastic waste disposal system in the area as well as communal/free grazing of livestock in highly waste-polluted areas seemed to be major factors in the high occurrence of foreign bodies in ruminants. To change this, collaborative intervention schemes involving professionals, policy makers, livestock keepers and environmental activists are needed.
Показать больше [+] Меньше [-]The effect of Rift Valley fever virus Clone 13 vaccine on semen quality in rams Полный текст
2015
Brown, Geoff | Venter, Estelle H. | Morley, Paul | Annandale, Henry
The effect of Rift Valley fever virus Clone 13 vaccine on semen quality in rams Полный текст
2015
Brown, Geoff | Venter, Estelle H. | Morley, Paul | Annandale, Henry
Rift Valley fever (RVF) is an arthropod-borne viral disease of importance in livestock and humans. Epidemics occur periodically in domestic ruminants. People in contact with infected livestock may develop disease that varies from mild flu-like symptoms to fatal viraemia. Livestock vaccination may assist in disease control. Rift Valley fever virus (RVFV) Clone 13 is a relatively new vaccine against RVF, derived from an avirulent natural mutant strain of RVFV, and has been shown to confer protective immunity against experimental infection with RVFV. The hypothesis tested in the current trial was that rams vaccinated with RVFV Clone 13 vaccine would not experience a reduction in semen quality (measured by evaluating the percentage progressively motile and percentage morphologically normal spermatozoa in successive ejaculates) relative to unvaccinated control animals. Ram lambs were screened for antibodies to RVFV using a serum neutralisation test. Animals without detectable antibodies (n = 23) were randomly allocated to either a test group (n = 12) or a control group (n = 11). Animals in the test group were vaccinated with RVFV Clone 13 vaccine. Daily rectal temperature measurements and weekly semen and blood samples were taken from all animals. Seven animals were eliminated from the statistical analysis because of potential confounding factors. Logistic regression analysis was performed on data gathered from the remaining animals to determine whether an association existed between animal group, rectal temperature and semen quality parameters. No correlation existed between the treatment group and values obtained for the semen quality parameters measured. There was no statistically significant post-vaccination decline in the percentage of live morphologically normal spermatozoa, or the percentage of progressively motile spermatozoa, either when assessed amongst all animals or when assessed within individual groups. A repeat study with a larger sample size and a more comprehensive pre-screening process may be indicated to avoid the inclusion of unsuitable animals.
Показать больше [+] Меньше [-]The effect of Rift Valley fever virus Clone 13 vaccine on semen quality in rams Полный текст
2015
Geoff Brown | Estelle H. Venter | Paul Morley | Henry Annandale
Rift Valley fever (RVF) is an arthropod-borne viral disease of importance in livestock and humans. Epidemics occur periodically in domestic ruminants. People in contact with infected livestock may develop disease that varies from mild flu-like symptoms to fatal viraemia. Livestock vaccination may assist in disease control. Rift Valley fever virus (RVFV) Clone 13 is a relatively new vaccine against RVF, derived from an avirulent natural mutant strain of RVFV, and has been shown to confer protective immunity against experimental infection with RVFV. The hypothesis tested in the current trial was that rams vaccinated with RVFV Clone 13 vaccine would not experience a reduction in semen quality (measured by evaluating the percentage progressively motile and percentage morphologically normal spermatozoa in successive ejaculates) relative to unvaccinated control animals. Ram lambs were screened for antibodies to RVFV using a serum neutralisation test. Animals without detectable antibodies (n = 23) were randomly allocated to either a test group (n = 12) or a control group (n = 11). Animals in the test group were vaccinated with RVFV Clone 13 vaccine. Daily rectal temperature measurements and weekly semen and blood samples were taken from all animals. Seven animals were eliminated from the statistical analysis because of potential confounding factors. Logistic regression analysis was performed on data gathered from the remaining animals to determine whether an association existed between animal group, rectal temperature and semen quality parameters. No correlation existed between the treatment group and values obtained for the semen quality parameters measured. There was no statistically significant post-vaccination decline in the percentage of live morphologically normal spermatozoa, or the percentage of progressively motile spermatozoa, either when assessed amongst all animals or when assessed within individual groups. A repeat study with a larger sample size and a more comprehensive pre-screening process may be indicated to avoid the inclusion of unsuitable animals.
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