No description available.

No description available.

Seasonal population fluctuations of the cottontail rabbit were measured by evening roadside counts and trapping. During the latter part of July, roadside counts showed a rather marked and drastic decline in the number of rabbits. This decline was forecast by the low number of rabbits seen in the field and the low number of rabbits the investigator was able to trap. Further confirmation of this decline came during the first week of the 1960-61 hunting season. A 42 per cent decrease in the number of rabbits killed occurred in spite of a 10 per cent increase in hunting pressure. By the end of the hunting season a 60 per cent decrease in the rabbit harvest was recorded. / Master of Science

Includes bibliographical references. (p. 131-140) / 140 leaves : ill. (some col.) ; 26 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Zoology, 1968

Thesis (Ph. D.)--State University of New York at Binghamton, Department of Anthropology, 2008. / Includes bibliographical references.

published_or_final_version / Dentistry / Doctoral / Doctor of Philosophy

published_or_final_version / Dentistry / Doctoral / Doctor of Philosophy

published_or_final_version / Orthopaedics and Traumatology / Doctoral / Doctor of Philosophy

A series of experiments was conducted to evaluate the value of jojoba meals in chick, rabbit and laying hen diets. Treated meals used in these studies had been subjected to solvent, chemical and microbial treatments for the removal of simmondsin toxicants. Feeding 5% untreated jojoba meal diets to either chicks, rabbits or laying hens resulted in a general poor performance as evidenced by reduced feed intake, poor growth and poor feed conversion; in addition, low egg production and egg output were obtained with laying hens. Incorporation of the untreated meal (containing 4.7% simmondsin compounds) at 10% of the diet caused 55.6% mortality in chicks. A pair-feeding study with chicks revealed that reduced feed intake rather than toxic effects was responsible for decreased growth and mortality. A similar study with rabbits showed that both high levels of simmondsin toxicants and palatability were responsible for poor growth. Of the seven meals tested with chicks, only the Lactobacillus acidophilus #1911 treated meal supported adequate growth when added to the diet at a level of 10%. However, feed conversion was poor at this level of suplementation. Lowering the simmondsin toxicants to .34% of the meal allowed adequate growth in weanling rabbits when incorporated in the diet at levels up to 15%. Slightly lower amino acid digestibilities were obtained for diets containing this meal. Studies of amino acid availabilities with the jojoba meals indicated a general low availability for the essential amino acids (33.7% for lysine and 43.4% for methionine). Starch digestibility was also low (22%) and true metabolizable energy varied from 1.71 to 1.90 kcal/g in laying hens. Jojoba meal also contains a trypsin inhibitor (TI) with activities reaching 5.48 TIU/g which was inactivated in 30 min at 15% moisture and 100 C. Tannic acid levels in the jojoba meals varied from 1.50 to 2.57%. Poor amino acid availabilities were still obtained after TI inactivation. The use of jojoba meal in the feeding of poultry or rabbits will require the removal of the simmondsin toxicants, denaturation of the TI as well as consideration of the poor amino acid availability and low energy content.

As técnicas de remoção da catarata evoluíram consideravelmente nos últimos anos. No entanto, apesar do aprimoramento de novas técnicas e equipamentos, a inflamação resultante da manipulação e da remoção da lente é ainda uma das principais causas de complicações pós-operatórias. Desta forma novos anti-inflamatórios têm sido testados para o melhor controle da inflamação no sentido de aumentar o sucesso da cirurgia. O objetivo do presente trabalho foi comparar os efeitos anti-inflamatórios do nepafenaco 0,1% e da dexametasona 0,1% no tratamento da inflamação decorrente da facoemulsificação experimental em coelhos. Para tanto 21 coelhos foram submetidos à facoemulsificação do olho direito e distribuídos em três grupos: Grupo ST recebeu colírio de moxifloxacino 0,5% quatro vezes ao dia por 15 dias; Grupo CORT recebeu associação de colírios dexametasona 0,1% e moxifloxacino 0,5% quatro vezes ao dia por 15 dias; Grupo NEPA - recebeu associação de colírios nepafenaco 0,1% e moxifloxacino 0,5% quatro vezes ao dia por 15 dias. Os animais foram submetidos à avaliação clínica, mensuração de pressão intra-ocular, mensuração da espessura corneal e coleta de humor aquoso imediatamente antes do procedimento cirúrgico, 1, 2, 3, 7 e 15 dias após a cirurgia. As amostras foram armazenadas a -80°C para mensuração dos níveis de prostaglandina, proteína e ácido ascórbico. Com relação aos parâmetros clínicos, observou-se diferença para secreção ocular no momento T2 onde o grupo NEPA apresentou menor escore. O mesmo foi observado nos momentos T2 e T7 para hiperemia conjuntival, nos momentos T2 e T3 para opacidade corneal e no momento T3 para fibrina em câmara anterior. A paquimetria corneal não mostrou diferença significante entre os grupos, com exceção do momento T15 quando os grupos NEPA e CORT mostraram paquimetria inferior ao grupo ST. Os níveis de prostaglandina mostraram-se inferiores no grupo NEPA nos momentos T1 e T2 ainda que nos demais momento exista maior agrupamento de animais nos intervalos de menor concentração de PGE. Não se observou diferença entre os valores da pressão intra-ocular entre os grupos com exceção do momento T1 em que houve um pico de PIO no grupo CORT (35,7 ± 10,73 mmHg). Em relação à contagem de células não se observou diferença entre os grupos com exceção do momento T3 que mostrou menor número de células no grupo CORT. Os níveis de ácido ascórbico foram superiores no grupo NEPA em todos os momentos, porém apenas em T7 e T15 com diferença estatisticamente significante em relação ao CORT. O grupo CORT mostrou a concentração de proteína nos dois primeiros dias (T1 e T2) e a partir do momento T3 o grupo NEPA passou a apresentar concentrações de proteína discretamente menores. O grupo ST mostrou concentrações superiores em todos os momentos. O tempo de Ultra-som utilizado nos três grupos não diferiu estatisticamente. Desta forma podemos dizer que o nepafenaco foi eficiente na inibição da inflamação, redução da PCC e controle da PIO, sendo superior à dexametasona na inibição da formação de prostaglandina no HA e no restabelecimento dos níveis de ácido ascórbico na câmara anterior. / The techniques of cataract removal have developed considerably in the last years. Despite of the improvement of new techniques and equipments, inflammation resultant from manipulation and lens extraction remain one of the main causes of post-operative complications. New anti-inflammatory drugs have been tested to better control inflammation and therefore increase success of the surgery. The purpose of the study was to compare the anti-inflammatory effects of nepafenac 0,1% and dexametasone 0,1% eye drops after experimental phacoemulsification in rabbits. Twenty one animals were submitted to phacoemulsification of the right eye and divide into three groups: Group ST - moxifloxacin 0,5% eye drops 4 times a day; Group CORT - dexametasone 0,1 % and moxifloxacin 0,5% eye drops 4 times a day; Group NEPA - nepafenac 0,1% and moxifloxacin 0,5% eye drops 4 times a day. Animals underwent clinical evaluation and values of intra-ocular pressure and central corneal pachimetry were assessed and a sample of aqueous humor was taken immediately before the surgical procedure and at days 1, 2, 3, 7 and 15 after surgery. The aqueous humor samples were storage at - 80°C and the levels of prostaglandins, protein and ascorbic acid were measured. No difference in blepharospasm was noted between groups. Group NEPA showed lower scores of ocular discharge only at day 2. The same was noted at days 2 and 7 for conjunctival hyperemia, at days 2 and 3 for corneal opacity and at day 3 for fibrin inside the anterior chamber. Corneal pachimetry showed no difference between groups except at day 15 when groups CORT e NEPA showed lower corneal pachimetry when compared to control group. Regarding the prostaglandin, NEPA group showed the lowest levels; however statistical difference was only observed at days 1 and 2. Values of intra-ocular pressure showed no statistical difference except at day 1 when a peak was noted in CORT group (35,7 ± 10,73 mmHg). No difference between groups was noted in inflammatory cell counting but in day 3 CORT group showed less cells. The ascorbic acid levels of the NEPA group were higher in all days but statistical difference was only observed at days 7 and 15. Group CORT showed lower concentration of protein at days 1 and 2 and from days 3 to 15 NEPA showed slightly lower concentration. Group ST showed highest concentrations at all moments. Mean values of ultra-sound time were not statistically different between NEPA, CORT and ST groups. Nepafenac showed to be efficient in reducing CCP, controlling IOP and inflammatory clinical signs when compared to dexamethasone and was more efficient than dexamethasone 0,1% in the recovering of the of the humor ascorbic acid levels and inhibiting PGE2 production in aqueous humor.