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Abstract Extract Sarcoptes scabiei has been reported on a number of hosts in New Zealand including the dog, ferret (Mustela putorius), pig, hedgehog (Erinaceus europaeus), llama (Lama glama) and human (Tenquist and Charleston 2001). We report here the first record of infestation with these mites on an alpaca (Lama pacos) in New Zealand. The mites were detected on an adult male alpaca that had been maintained for several years along with others on a property in the Wairarapa region of the North Island. The infestation manifested itself as pruritis and alopecia. On clinical examination thick, grey, hyperkeratotic crusts were visible firmly adherent to the skin of the medial surface of both hindlegs. Similar smaller and possibly more recent lesions were also evident on the animal's face, which appeared to be the only affected alpaca on the property. 相似文献
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Extract Ectoparasites known to cause skin lesions in alpacas (Vicugna pacos) include the mites Sarcoptes scabiei, Chorioptes bovis and Psoroptes spp., and the lice Microthoracius mazzai and Bovicola breviceps (Cicchino et al. 1998; Foster et al. 2007). Occasionally, Demodex spp. infestations have been reported or mentioned as incidental fi ndings in llamas (Lama glama) (Atlee et al. 1997) and alpacas (Foster et al. 2007). So far, only Sarcoptes scabiei (McKenna et al. 2005), Chorioptes bovis (Arthur 1997, non-peer reviewed) and Bovicola breviceps (Palma et al. 2006) have been recorded on lamoids in New Zealand. Here, we report the first record of Demodex spp. infestation of an alpaca in New Zealand. 相似文献
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K Gutierrez L Siqueira ML Rigo WG Glanzner JF Oliveira PB Gonçalves 《Reproduction in domestic animals》2013,48(5):844-849
The aim of the present study was to examine the role of oxytocin (OT) in the progesterone (P4) and prostaglandins (PGs) pathway to induce oocyte meiotic resumption. Cumulus–oocyte complexes were co‐cultured with follicular hemisections for 15 h to determine the effects of different doses of OT or atosiban (ATO; oxytocin receptor antagonist) on oocyte meiotic resumption. In another experiment, we examined the effect of the interaction between P4, OT and PGs on the regulatory cascade of the oocyte meiotic resumption. Oxytocin at 1 μm was effective in inducing meiotic resumption in oocytes co‐cultured with follicular cells (84.0%), not differing from the positive control group (74.4%). Atosiban inhibited in a dose‐dependent manner the positive effect of OT on the meiotic resumption (27.6% metaphase I with 10 μm of ATO, which did not differ from the 25.5% of the negative control group). Furthermore, a third experiment showed that P4 was able to induce oocyte meiotic resumption, which was inhibited by ATO. However, the OT positive effect was not blocked by mifepristone (P4 antagonist), but was inhibited by indomethacin (a non‐selective PTGS2 inhibitor). Collectively, these data suggest a sequential role of P4, OT and PGs in the induction of oocyte meiotic resumption. 相似文献
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Behavioral and cardiopulmonary effects of dexmedetomidine alone and in combination with butorphanol,methadone, morphine or tramadol in conscious sheep 
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Fernando SF Cruz Adriano B Carregaro Alceu G Raiser Marina Zimmerman Rafael Lukarsewski Renata PB Steffen 《Veterinary anaesthesia and analgesia》2010,37(2):116-122
ObjectiveTo evaluate total intravenous anesthesia with propofol alone or in combination with S(+)-ketamine in rabbits undergoing surgery.Study designProspective, randomized, blinded trial.AnimalsNine 6-month-old New Zealand white rabbits, weighing 2.5–3 kg.MethodsAnimals received acepromazine (0.1 mg kg?1) and buprenorphine (20 μg kg?1) IM, and anesthesia was induced with propofol (2 mg kg?1) and S(+)-ketamine (1 mg kg?1) IV. Rabbits received two of three treatments: propofol (0.8 mg kg?1 minute?1) (control treatment, P), propofol (0.8 mg kg?1 minute?1) + S(+)-ketamine (100 μg kg?1 minute?1) (PK100) or propofol (0.8 mg kg?1 minute?1) + S(+)-ketamine (200 μg kg?1 minute?1) (PK200). All animals received 100% O2 during anesthesia. Heart rate, mean arterial pressure, hemoglobin oxygen saturation and respiratory rate were measured every 5 minutes for 60 minutes. Blood-gas parameters were measured at zero time and 60 minutes. Additional propofol injections, if necessary, and recovery time were recorded.ResultsAn increase in heart rate was observed in P and PK200 up to 10 minutes after induction of anesthesia. Blood pressure decreased from baseline values during the first 10 minutes in P and PK200, and during the first 15 minutes and between 45 and 55 minutes in PK100. A reduction in respiratory rate was observed after 5 minutes in all treatments. Respiratory acidosis was observed in all treatments. Six (2.8) [median (interquartile range)] further propofol injections were necessary in P, which differed statistically from PK100 [1 (0.2)] and PK200 [2 (0.6)]. Recovery time was shorter in P compared with PK100 and PK200, being [7.5 minutes (4.11)], [17.5 minutes (10.30)], and [12 minutes (10.30)], respectively.Conclusions and clinical relevanceS(+)-ketamine potentiates propofol-induced anesthesia in rabbits, providing better maintenance of heart rate. All of these techniques were accompanied by clinically significant respiratory depression. 相似文献
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F Hill PB Stark RT Stebbins ER Anderson HM Antia TM Brown TL Duvall DA Haber JW Harvey DH Hathaway R Howe RP Hubbard HP Jones JR Kennedy SG Korzennik AG Kosovichev JW Leibacher KG Libbrecht JA Pintar EJ Rhodes J Schou MJ Thompson S Tomczyk CG Toner R Toussaint WE Williams 《Science (New York, N.Y.)》1996,272(5266):1292-1296
The Global Oscillation Network Group (GONG) project estimates the frequencies, amplitudes, and linewidths of more than 250,000 acoustic resonances of the sun from data sets lasting 36 days. The frequency resolution of a single data set is 0.321 microhertz. For frequencies averaged over the azimuthal order m, the median formal error is 0.044 microhertz, and the associated median fractional error is 1.6 x 10(-5). For a 3-year data set, the fractional error is expected to be 3 x 10(-6). The GONG m-averaged frequency measurements differ from other helioseismic data sets by 0.03 to 0.08 microhertz. The differences arise from a combination of systematic errors, random errors, and possible changes in solar structure. 相似文献
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PB McKenna 《New Zealand veterinary journal》2013,61(3):172-173
Abstract Extract Recently, a comparison was made between the prevalence of anthelmintic resistance, determined using faecal egg count reduction tests (FECRT), on randomly selected sheep farms in a systematic national survey (Waghorn et al. 2006) and that derived from similar case material submitted to a veterinary pathology laboratory on a more ad-hoc basis (McKenna 2008). The results of that comparison showed that while there were some differences between them, there were considerable similarities in the prevalence figures obtained from either source. Those similarities, which were particularly evident in terms of the overall pattern of involvement of the various worm genera and the types of anthelmintic concerned, led to the conclusion that FECRT case submissions to veterinary laboratories may offer a useful source of information regarding changes in the prevalence of anthelminticresistant sheep nematodes in New Zealand (McKenna 2008). Accordingly, the present study was undertaken to make further use of this material, to try to ascertain what, if any, such changes may have taken place over the last few years. 相似文献
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AIM: To investigate the occurrence of resistance to a full dose of oral ivermectin by Cooperia curticei in sheep. METHODS: Twelve lambs on a sheep and cattle property in the North Island of New Zealand were randomly allocated to one of two equal-sized groups. One group was treated orally with a single dose of ivermectin at the manufacturer's recommended dose rate of 0.2 mg/kg, while the other remained as an untreated control. Worm counts were carried out post mortem on the abomasa and small intestines of all animals in both groups 7 days after treatment. RESULTS: While treatment with ivermectin reduced the numbers of all other worm genera to almost zero, those of Ostertagia (= Telodorsagia) circumcincta and C. curticei were reduced by only 37% and 19%, respectively. CONCLUSIONS: These results provide clear evidence of resistance to ivermectin by O. circumcincta and C. curticei. They also appear to represent the first record of macrocylic lactone (ML) resistance in C. curticei in sheep in New Zealand or elsewhere. 相似文献