The effect of unilateral resection of segments of both palmar digital arteries on the navicular bone in ponies: an experimental study     

A B Rijkenhuizen  F Nèmeth  K J Dik  S A Goedegebuure  W E Van den Brom 《Equine veterinary journal》1989,21(6):413-417

Clinical, radiographical, scintigraphical and histological effects on the navicular bone after resection of the medial and lateral palmar digital arteries in the pastern of one forelimb in ponies are evaluated. The acute disruption of the main blood supply of the distal extremity causes lameness due to the suddenness of the resection in which the collateral circulation is insufficiently developed. Because of the compensatory collateral circulation, no permanent symptoms of ischaemia occur despite the partial resection of both palmar digital arteries. Histologically the percentage of relative osteoid volume of the operated limb was significantly higher than in the control limb.  相似文献   

An evaluation of the Dirochek® test for detection of Dirofilariu immitis antigen in dogs     

RB ATWELL  AB SHERIDAN  FC BALDOCK 《Australian veterinary journal》1988,65(5):161-162

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Reproductive Performance of Ewes after 5-Day Treatment with Intravaginal Inserts Containing Progesterone in Combination with Injection of Prostaglandin F₂α     

AB Dixon  M Knights  JL Pate  PE Lewis  EK Inskeep 《Reproduction in domestic animals》2006,41(2):142-148

Three experiments were conducted with a total of 1579 ewes to examine reproductive performance in response to synchronization of oestrus during the breeding season, using controlled internal drug releasing (CIDR-G) inserts in regimens designed to provide high concentrations of circulating progesterone. In experiment 1, treatment with two CIDR-G inserts for 12 days produced conception rate (79%) and prolificacy (1.9) to first service equivalent to breeding at natural oestrus (56% and 2.0, respectively). Pregnancy rates to two service periods were 90 and 79%, respectively. In experiments 2 and 3, progesterone was delivered by a single CIDR-G insert for 5 days in combination with prostaglandin F2alpha (PGF2alpha; 5 mg i.m., twice, 3 h apart) the day before (experiment 2), or at insert removal (experiment 3). The combined treatments improved rates of synchronization of oestrus (p<0.01) by 23 and 20% points, respectively, and pregnancy rates to the first service period by 19 (p<0.05) and 13 (p<0.01) percentage points, respectively, compared to treatment with PGF2alpha alone. It is concluded that the combination of treatment for 5 days with a CIDR-G insert and two injections of 5 mg PGF2alpha, the day before, or the day of insert removal, were effective treatments to obtain high fertility at synchronized oestrus in ewes during the breeding season.  相似文献   

Clinical experiences of treating septic arthritis in the equine by repeated joint lavage: a series of 39 cases     

Meijer MC  van Weeren PR  Rijkenhuizen AB 《Journal of veterinary medicine. A, Physiology, pathology, clinical medicine》2000,47(6):351-365

The condition of septic arthritis was treated in 12 foals with 21 affected joints (Group I) and in 27 adult horses. The adult horses were divided into three groups, based on aetiology of the condition: haematogenous (Group II, n = 6), iatrogenic (Group III, n = 6), and perforating trauma (Group IV, n = 15). The treatment consisted of an initial systemic antibiotic that anticipated the microbial agents that were considered most likely per group, repeated through-and-through joint lavages every other day and non-steroidal anti-inflammatory drugs. The antibiotics were adjusted to the results of bacteriological culture and susceptibility tests. Joint lavages were continued until the white blood cell count dropped below 15 G/l and bacteriological culture was negative, after which a single dose of a short-acting corticosteroid was administered intra-articularly. Joint recovery rate in group I was 71%. Patient recovery rate of the foals, however, was lower (42%). Three foals were killed for reasons other than arthritis; one foal because of an arthritis-related problem and three foals because of persistent arthritis. Overall joint recovery rate, equalling patient recovery rate, in the adult horses was 81%. The expected predominance of Streptococcus spp. in haematogenous arthritis in adult horses was not confirmed, indicating that in these cases also, an initial antibiotic treatment with a broad-spectrum combination is preferable. It is concluded that with intensive treatment, the prognosis of septic arthritis in the adult horse can be classified as fair to even good. Results in the foals are not as good, but this seems to be more due to the specific problems surrounding the equine neonate than to unresponsiveness to the treatment.  相似文献   

The mesotendineum of the superficial digital flexor tendon (SDFT)     

Saskia Orth  Carsten Staszyk  Astrid B. M. Rijkenhuizen 《Equine Veterinary Education》2023,35(2):e138-e147

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Pulmonary adiaspiromycosis in critically endangered northern hairy‐nosed wombats (Lasiorhinus krefftii)          下载免费PDF全文

AB Schaffer‐White  D Harper  M Mayhew  A McKinnon  L Knott  RE Allavena 《Australian veterinary journal》2017,95(11):431-436

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C, N, and noble gas isotopes in grain size separates of presolar diamonds from efremovka     

AB Verchovsky  AV Fisenko  LF Semjonova  IP Wright  MR Lee  CT Pillinger 《Science (New York, N.Y.)》1998,281(5380):1165-1168

Nanometer-size presolar diamonds from the Efremovka CV3 chondrite were physically separated into several grain size fractions by ultracentrifugation. The coarsest size fraction is the most enriched in carbon-12; the others have broadly similar carbon isotopic compositions. Measurement of noble gases shows that their concentration decreases with decreasing grain size. This effect is attributed to ion implantation. Such an episode could occur in the envelope of a supernova that produced the diamonds, or in interstellar space; in either case, ions with energies above a certain threshold pass completely through the smaller diamond grains without being captured. Concentrations of nitrogen show only minor variations with grain size, indicating a different mechanism of incorporation into the diamonds.  相似文献   

Unilateral and bilateral laparoscopic ovariectomy in 157 mares: a retrospective multicenter study     

Röcken M  Mosel G  Seyrek-Intas K  Seyrek-Intas D  Litzke F  Verver J  Rijkenhuizen AB 《Veterinary surgery : VS》2011,40(8):1009-1014

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Kinematic analysis of equine masticatory movements: comparison before and after routine dental treatment     

Simhofer H  Niederl M  Anen C  Rijkenhuizen A  Peham C 《Veterinary journal (London, England : 1997)》2011,190(1):49-54

The objective of this study was to compare masticatory movements before and after dental treatment using kinematic analysis. The masticatory movements of 15 adult Warmblood horses with mild dental pathology chewing standardised hay were recorded on three consecutive days before and three times after (days 7, 21, 28) dental correction. The results of the leading mandibular tracking marker, located at the caudal edge of the inter-mandibular suture, were compared statistically. Reproducibility of measurements prior to dental treatment was excellent (P<0.05). Rostrocaudal mandibular motion was significantly reduced after dental correction (9±2mm vs. 8±2mm; P=0.046). Oscillations during the power stroke were significantly reduced after dental correction (R(2)=98.3%±0.3 vs. 98.8%±0.3; P=0.050). Although significant changes were observed in individual horses, the overall results of lateral and dorsoventral mandibular motion did not reveal significant differences. In conclusion, kinematic analysis of masticatory movements provided reproducible results and may be useful to evaluate changed movement patterns following dental correction.  相似文献   

Post-partum uterine rupture: Standing repair in three mares using a laparoscopic technique     

M. Diekstall  C. Rohde  A. B. M. Rijkenhuizen 《Equine Veterinary Education》2020,32(6):319-324

Three mares underwent diagnostic laparoscopy because of suspicion of post-partum uterine ruptures. All three horses showed clinical signs of a uterine rupture between 1 and 3 days after parturition and underwent diagnostic laparoscopy. In all cases a full thickness uterine rupture could be detected and was sutured laparoscopically. Availability of suture material and surgeon experience were responsible for the surgical methods chosen for repair. In the first case, a hand-assisted laparoscopic approach was chosen for suturing the ruptured uterus, whereas in the other cases the approach was entirely laparoscopic. In the second case, extracorporeal knots were used for the repair and in the last case described a barbed loop suture was available for closure of the uterus. Two of three mares were alive for at least 12 months after surgery without any abdominal problems. One of these mares delivered a healthy foal 2 years after surgery. The remaining mare died 3 months after surgery but no necropsy was done. Laparoscopy should be considered for post-partum mares with signs of peritonitis to access the uterus and repair a rupture if it is accessible. A laparoscopic approach using intracorporeal knots or barbed sutures for the repair of the uterine rupture as well as a hand-assisted laparoscopic approach are feasible. The use of the barbed suture for intracorporeal closure makes the minimal invasive laparoscopic technique easier to perform.  相似文献