ABSTRACT
In the semiarid region of Brazil, in areas with vegetation composed mainly of Poincianella pyramidalis, several cases of congenital malformation and reproductive losses were observed in goats and sheep from 2012 to 2014. To determine the teratogenic effect of P. pyramidalis, two groups of eight goats each were used. Goats from Group 1 received fresh P. pyramidalis, harvested daily, as the only roughage during the whole breeding and pregnancy period. Goats in Group 2 (control) received Cynodon dactylon (tifton) hay free choice. Ultrasound examination for pregnancy diagnosis was performed every 28 days. Four goats from Group 1 were pregnant on day 28 but not on day 56, suggesting embryonic death or abortion. Another goat from Group 1 died at day 70 of pregnancy, and the fetuses exhibited micrognathia. The other three goats bore six kids, three of which showed bone malformations in the limbs, spine, ribs, sternum, and head, including arthrogryposis, scoliosis and micrognathia. One kid also showed hypoplasia of the left pulmonary lobes. In the control group, all goats bore a total of 13 kids and none of them exhibited malformations. These results demonstrated that P. pyramidalis causes congenital malformations and other reproductive losses in goats.
Subject(s)
Abnormalities, Drug-Induced/veterinary , Abortion, Veterinary/chemically induced , Caesalpinia/toxicity , Fetal Resorption/veterinary , Goat Diseases/chemically induced , Goat Diseases/etiology , Plant Poisoning/veterinary , Pregnancy Complications/veterinary , Animals , Arthrogryposis/chemically induced , Arthrogryposis/veterinary , Brazil , Cynodon , Female , Fetal Resorption/chemically induced , Goat Diseases/physiopathology , Goats , Micrognathism/chemically induced , Micrognathism/veterinary , Plant Components, Aerial/toxicity , Plant Poisoning/physiopathology , Pregnancy , Pregnancy Complications/physiopathology , Scoliosis/chemically induced , Scoliosis/veterinaryABSTRACT
This study describes a spontaneous case of Pierre Robin sequence in a nonhuman animal species. A miniature dachshund with micrognathia developed glossoptosis, respiratory distress, dysphagia, temporomandibular ankylosis, and a misaligned upper jaw. The severity of this condition resulted in death by obstructive apnea at the age of 8 mo. Dogs with Pierre Robin sequence can provide further knowledge and a greater understanding of this abnormality, leading to better management of affected individuals and improvement of therapeutic methods.
Subject(s)
Dog Diseases/congenital , Pierre Robin Syndrome/veterinary , Animals , Dog Diseases/genetics , Dog Diseases/pathology , Dogs , Fatal Outcome , Genetic Predisposition to Disease , Male , Micrognathism/genetics , Micrognathism/pathology , Micrognathism/veterinary , Pedigree , Pierre Robin Syndrome/pathologyABSTRACT
Mandibular brachygnathia was the etiology for moderate mandibular distoclusion and bilateral palatal canine cusp penetrations in a kitten. The course of treatment included deciduous canine tooth exodontia, tooth extensions, and ultimately, aligners that incorporated inclined planes fabricated from a thermoplastic sheet that was "indirectly" vacuum thermoformed over a dental model. The thin, flexible aligners fit over the rostral maxillary teeth and palate, and were retained by a snug fit on the slightly divergent maxillary canine teeth. Advantages over "directly" applied composite inclined planes include: serial gradations of angulations for more gradual tooth movement, elimination of dental trauma from composite adhesions and removals, owner-removable and cleanable appliances, and a single anesthetic event required for dental impressions. Five progressively angled aligners were used sequentially over a 3-month period to achieve atraumatic "clinical" neutroclusion of the rostral dentition.
Subject(s)
Cat Diseases/therapy , Malocclusion/veterinary , Micrognathism/veterinary , Orthodontic Appliance Design/veterinary , Tooth Movement Techniques/veterinary , Animals , Cats/abnormalities , Cuspid/surgery , Follow-Up Studies , Male , Malocclusion/therapy , Mandible/abnormalities , Mandible/growth & development , Patient Care Planning , Tooth Extraction/veterinary , Tooth Movement Techniques/instrumentation , Tooth, Deciduous/surgeryABSTRACT
Congenital malformations caused by the ingestion of Mimosa tenuiflora have been reported in ruminants in the semiarid of the Brazilian Northeast. This paper reports malformations diagnosed in ruminants, from 2000 to 2008, by the Veterinary Pathology Laboratory of the Federal University of Campina Grande, Patos, PB, in municipalities of the states of Paraíba, Pernambuco and Rio Grande do Norte. During the period, 47 (3.48 percent) out of 1.347 ascensions were reported as malformations. Based in the type of malformation and in the origin of the animals, malformations were divided in: 1) caused by the ingestion of M. tenuiflora, and 2) sporadic malformations of unknown causes. In sheep, 21 out of 418 ascensions were malformations, being 18 (4.3 percent) of malformations caused by M. tenuiflora and 3 (0.71 percent) of sporadic malformations. In cattle, 14 out of 434 ascensions were malformations, from these 8 (1.84 percent) were caused by M. tenuiflora and 6 (1.38 percent) were sporadic malformations. In goats, 12 out of 495 ascensions were malformations, being 9 (1.81 percent) malformations related with the ingestion of M. tenuiflora and 3 (0.6 percent) sporadic malformations. More frequent malformations caused by M. tenuiflora were arthrogryposis, micrognatia, palatoschisis, microphtalmia and unilateral or bilateral hypoplasia or aplasia of the incisive bones. Sporadic malformations were acephaly and hermaphrodite, dicephaly and malformations of mesenteric vessel in sheep; atresia ani in three goats; and hydranencephaly, atresia ani, ribs malformation with eventracion, cerebellar hypoplasia with hydrocephalus, pulmonary choristoma and meningocele, and siamese twins in cattle. A case of cerebellar hypoplasia with hydrocephalus was negative on immunohistochemistry to bovine viral diarrhea virus. Malformations caused by M. tenuiflora occurred during the whole year...
Malformações congênitas causadas pela ingestão de Mimosa tenuiflora têm sido observadas em ruminantes no semiárido do Nordeste Brasileiro. Neste trabalho foram estudadas as malformações congênitas em ruminantes diagnosticadas entre 2000 e 2008, em municípios da Paraíba, Pernambuco e Rio Grande do Norte. Durante o período foram recebidos 1.347 materiais de ruminantes para diagnóstico, desses 47 (3,48 por cento) foram dignosticados como malformações congênitas. Com base no tipo de malformação e na procedência do animal as malformações foram divididas em: 1) causadas pelo consumo de M. tenuiflora; e 2) malformações esporádicas, sem causa conhecida. De 418 materiais de ovinos, 21 corresponderam a malformações, sendo 18 (4,3 por cento do total de materiais) de malformações causadas por M. tenuiflora e 3 (0,71 por cento) de malformações esporádicas. De 434 materiais de bovinos, 14 foram diagnosticados como malformações, sendo 8 (1,84 por cento) causadas por M. tenuiflora e 6 (1,38 por cento) malformações esporádicas. De 495 materiais de caprinos, 12 apresentaram malformações, sendo 9 (1,81 por cento) causadas pela ingestão de M. tenuiflora e 3 (0,6 por cento) malformações esporádicas. As principais malformações causadas por M. tenuiflora foram artrogripose, micrognatia, palatosquise, microftalmia e hipoplasia ou aplasia unilateral ou bilateral dos ossos incisivos. As malformações esporádicas incluiram: acefalia e hermafroditismo, dicefalia e malformações de vasos intestinais em ovinos; atresia anal em três caprinos; e hidranencefalia, atresia anal, malformações de costelas com eventração, hipoplasia cerebelar e hidrocefalia, coristoma pulmonar e meningocele, e gêmeos siameses em bovinos. O caso de hipoplasia cerebelar com hidrocefalia foi negativo pela imuno-histoquímica para o vírus da diarreia viral bovina. Malformações congênitas causadas por M. tenuiflora ocorreram durante todo o ano...
Subject(s)
Animals , Arthrogryposis/diagnosis , Arthrogryposis/veterinary , Micrognathism/diagnosis , Micrognathism/veterinary , Plants, Toxic/cytology , Plants, Toxic/adverse effects , Plants, Toxic/poisoning , Tissue and Organ Harvesting/methods , Tissue and Organ Harvesting/veterinaryABSTRACT
White lions (Panthera leo krugeri) have never been common in the wild, and at present, the greatest population is kept in zoos where they are bred for biological and biodiversity conservation. During the years 2003 to 2008 in a zoological garden in northern Italy, 19 white lions were born to the same parents, who were in turn paternally consanguineous. Out of the 19 lions, 4 (21%) were stillborn, 13 (69%) died within 1 month, and 1 (5%) was euthanatized after 6 months because of difficulty with prehension of food. Six lions (32%) showed malformations involving the head (jaw, tongue, throat, teeth, and cranial bones). One lion (5%) still alive at 30 months revealed an Arnold-Chiari malformation upon submission for neurological evaluation of postural and gait abnormalities. Paternal consanguinity of the parents, along with inbreeding among white lions in general, could account for the high incidence of congenital malformations of the head in this pride of white lions.