Cross-sectional area of the tendons of the tarsal region in Standardbred trotter horses     

Vilar JM  Santana A  Espinosa J  Spinella G 《Equine veterinary journal》2011,43(2):235-239

Reasons for performing study: The assessment of a normal range for cross‐sectional area (CSA) of tendons in the tarsal region is important in order to use them as reference values in the identification of pathological changes of dimensions. Objectives: To provide normal reference values for the CSA of the tendons of the tarsus of Standardbred trotter horses (STH) by means of ultrasonography. Methods: Transverse echographic images of the tendons were obtained at different levels proximodistally; these images were digitised and CSA values (mean ± s.d.) were obtained for each structure. Results: The largest structure corresponded with the lateral digital flexor/caudal tibial tendon complex at Level 1 and the smallest was the medial digital flexor tendon at Level 4. Almost all tendons showed a slight decreasing in their CSA when crossing the tarsus. Conclusions: The normal CSA values of tendinous structures in the tarsal region of the STH are reported. These data could be used as anatomical references. Potential relevance: The establishment of reference values could serve as a tool to discriminate between normal and abnormal dimensions of tarsal tendons in STH. Other horse breeds should need their own reference values.  相似文献   

Dual-purpose Guzerá cattle exhibit high dairy performance under heat stress     

Mário L. Santana Jr  Rodrigo J. Pereira  Annaiza B. Bignardi  Lenira El Faro  Maria F. Á. Pires  Ricardo G. Andrade  Bruno C. Perez  Frank A. T. Bruneli  Maria G. C. D. Peixoto 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2020,137(5):486-494

The present study evaluated the heat stress response pattern of dual-purpose Guzerá cattle for test-day (TD) milk yield records of first lactation and estimated genetic parameters and trends related to heat stress. A total of 31,435 TD records from 4,486 first lactations of Guzerá cows, collected between 1986 and 2012, were analysed. Two random regression models considered days in milk (DIM) and/or temperature × humidity-dependent (THI) covariate. Impacts of −0.037, −0.019 and −0.006 kg/day/THI for initial and intermediate stages of lactation were observed when considering the mean maximum daily temperature and humidity to calculate THI. Heritability estimates ranged from 0.16 to 0.35 throughout lactation and THI values, suggesting the possibility to expect gains from selection for such trait. The variable trajectory of breeding values for dual-purpose Guzerá sires in response to changes in THI values confirms that the genotype × environment interaction due to heat stress can have some effect on TD milk yield. Despite the high dairy performance of Guzerá cattle under heat stress, estimated genetic trends showed a progressive reduction in heat tolerance. Therefore, new strategies should be adopted to prevent negative impacts of heat stress over milk production in Guzerá animals in future.  相似文献   

Radiographic anatomy of the cockatiel (Nymphicus hollandicus) axial and appendicular skeleton     

Isadora A. Silva  Larissa C. Vieira  Vanda Regina M. Mancini  Ana Carolina L. Faillace  Marcelo Ismar S. Santana 《Anatomia, histologia, embryologia》2020,49(2):184-195

Cockatiels are popular pets. Still, despite medical and surgical relevance, the radiographic anatomy of the cockatiel (Nymphicus hollandicus) skeleton, like that of different wild and exotic bird species, has seldom been described. This study set out to describe the radiographic anatomy of the cockatiel skeleton. Twelve adult male and nine adult female specimens were radiographed using a digital X-ray system and different views. The radiographic anatomy of these birds was similar to that of other Psittacidae. However, some particularities inherent to the target species were detected, such as the presence of four flexion zones in the skull (craniofacial, nasal, jugal arch and palatine), complete bony orbit comprising a suborbital arch, 34–38 vertebrae (10 or 11 cervical, 8 or 9 thoracic, 9 or 10 lumbosacral, 5 or 6 caudal vertebrae and a pygostyle comprising 2 fused vertebrae), eight or nine pairs of ribs and a notarium made up of fused T2–T6 vertebrae. Poor radiopacity of the notarium, ribs and respective uncinate processes, and synsacral vertebrae made demarcation of these structures difficult. The appendicular skeleton of the cockatiel was very similar to that of other Psittacidae, and there were no gender-related differences.  相似文献   

Agronomic comparison of six bermudagrasses from Southern United States with five tropical grasses in central Puerto Rico     

Rafael Ramos‐Santana  Lee R. McDowell 《Journal of plant nutrition》2013,36(6):711-717

The dry matter yield (DMY), in vitro organic matter digestibility (IVOMD) and crude protein (CP) content of eleven grasses were studied during the years 1992 to 1994 under mob grazing conditions. Offered and consumed dry forage do not differ significantly (P<0.05) among the highest yielding accessions Cynodon nlenfuensis PRPI 2341, Cynodon plectostachium PRPI 11487, and Cynodon dactylon cv. Tifton 85. However, the commercial Cynodon nlenfuensis PRPI 2341 was consistently the highest yielding accession both years. Among the other grasses, Digitaria eriantha showed the lowest levels of refused dry forage, thus presenting the best forage acceptability by grazing animals. Digitaria eriantha also showed the highest levels of IVOMD in both the short and the long day seasons. It is concluded that none of the evaluated Cynodon dactylon accessions from southern United Sates, nor the digitaria and brachiaria species adapted better than the commercial accession Cynodon nlenfuensis PRPI 2341. Warm‐season perennial grasses are grown extensively in the southeastern United States. Among the grasses, one of the most widely grown is from the species Cynodon dactylon, commonly named bermudagrass (Eichhorn, 1984). The choice of a bermudagrass cultivar for establishment of pastures is an important decision for cattlemen seeking high weight gains of stocker steers throughout the warm grazing season of the southern United States (Greene et al., 1989). Selection of improved bermudagrass hybrids has dramatically increased forage yield over that of common bermudagrass. Improved forage quality has also resulted in improved performance of grazing animals fed harvested hybrid bermudagrass forage (Gates et al., 1989). Reports on average daily weight gains (ADG) of yearling steers grazing different bermudagrass hybrids varied between 0.68 to 0.79 kg animal^‐1 day^‐1 during the summer season of southern Louisiana (Faw et al., 1986). Hill et al. (1993) in Tifton, GA, found yearling ADG of 0.67 and 0.65 kg animal^‐1 day^‐1 for the recent bermudagrass releases Tifton 85 and Tifton 78, respectively. Forage quality dry matter yield and grazing performance support the hypothesis that Tifton 85 will likely become an important hay and grazing forage for the southern United States. In Puerto Rico, Cynodon nlenfuensis PRPI 2341 (stargrass) is at present the grass cultivar most frequently grown on dairy farms (Ramos‐Santana and Randel, 1996). Yearly ADG of 0.59 kg animal^‐1 day^‐1 has been reported for young steers grazing stargrass in the humid tropical zone of Puerto Rico (Vicente‐Chandler et al., 1983). At Ona, FL, lower ADG of 0.54 kg has also been obtained with stargrass (Mislevy, 1989). The objective of this paper is to compare the agronomic performance (dry matter yield and quality) of six of the most outstanding bermudagrass hybrids from the southern United States, with five tropical grasses from the cynodon, brachiaria, and digitaria genera under the tropical conditions of central Puerto Rico.  相似文献   

Lethal and sublethal effects of chemical constituents from essential oils on Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae: Bruchinae) in cowpea stored grains     

Barbosa  Douglas Rafael e Silva  de Oliveira  José Vargas  da Silva  Paulo Henrique Soares  Santana  Mauricéa Fidelis  Breda  Mariana Oliveira  de França  Solange Maria  de Miranda  Vinícius Lima 《植物病害和植物保护杂志》2021,128(6):1575-1586

Journal of Plant Diseases and Protection - The recent use of essential oils has been considered an important approach in pest management programs for stored products. Regarding essential oils, it...  相似文献   

Genetic variation of the weaning weight of beef cattle as a function of accumulated heat stress          下载免费PDF全文

M.L. Santana Jr.  A.B. Bignardi  J.P. Eler  J.B.S. Ferraz 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2016,133(2):92-104

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Intake and digestibility,rumen fermentation,and concentrations of metabolites in steers fed with peanut cake     

Paulo Andrade de Oliveira  Ronaldo Lopes Oliveira  Soraya Maria Palma Luz Jaeger  Meiby Carneiro de Paula Leite  Adriana Regina Bagaldo  Leilson Rocha Bezerra  Braulio Rocha Correia  Nivaldo Barreto de Santana Filho 《Tropical animal health and production》2016,48(2):403-409

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Morphological description of male genital organs of Marca's marmoset (Mico marcai)          下载免费PDF全文

Gustavo Henrique Lima de Siqueira  Felipe Ennes Silva  Marcelo Ismar Silva Santana 《Anatomia, histologia, embryologia》2018,47(4):372-384

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Blood gas and serum biochemical RIs for healthy newborn Murrah buffaloes (Bubalus bubalis)          下载免费PDF全文

André M. Santana  Daniela G. Silva  Virna Clemente  Lucas J. L. Pizauro  Priscila A. Bernardes  Clarissa H. Santana  Peter D. Eckersall  José J. Fagliari 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2018,47(1):94-99

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Male genital organs of the black-crowned dwarf marmoset (Callibella humilis)     

Kássia Regina Aguiar Vieira  Hiuane Araújo Weber  Fabiano José Ferreira de Sant’Ana  Guilherme Reis Blume  Felipe Ennes Silva  Marcelo Ismar S. Santana 《Anatomia, histologia, embryologia》2023,52(2):163-171

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