Biokinematics under Competitive Racing Conditions in Young Standardbred Trotters: A Preliminary Report   总被引：1，自引：0，他引：1  

Jose M. Vilar  Francisco Miró  Angelo Santana  Giuseppe Spinella 《Journal of Equine Veterinary Science》2010

With the aim of evaluating equine performance in competitive trotter horses under normal racing conditions data of stride length, stride frequency and mean horses speed were obtained from 50, 2-year-old Italian winner fillies during the racing and the sprint laps of competition. The enhancement of speed in the sprint lap was obtained by increasing both stride length and stride frequency. Stride frequency for the racing and the sprint laps were (mean ± SD) 133.63 ± 3.93 and 138.97 ± 6.62 strides per minute, respectively and Stride length for the racing and the sprint laps were 7.17 ± 0.17 and 7.30 ± 0.11 m, respectively; mean speed was 48.18 ± 1.09 km/hr. The usefulness of the kinematic assessments is discussed as is its potential reference for future indicators of performance.  相似文献   

Biokinematics Under Competitive Racing Conditions in Young Standardbred Trotter Horses: A Preliminary Report     

Jose M. Vilar  F. Miró  A. Santana  G. Spinella 《Journal of Equine Veterinary Science》2010

The aim of this study was to evaluate equine performance in competitive trotter horses under normal racing conditions. Data of stride length, stride frequency, and mean horse speed were obtained from 50 2-year-old Italian fillies that were winners during the racing and the sprint laps of competition. The enhancement of speed in the sprint lap was obtained by increasing both stride length and stride frequency. Stride frequencies for the racing and the sprint laps were (mean ± SD) 133.63 ± 3.93 and 138.97 ± 6.62 strides per minute, respectively, and stride lengths for the racing and the sprint laps were 7.17 ± 0.17 and 7.30 ± 0.11 m, respectively; mean speed was 48.18 ± 1.09. The usefulness of the kinematic assessments as well as its potential reference for future indicators of performance is discussed in this study.  相似文献   

Mapping genes for resistance to bacterial blight (Pseudomonas syringae pv. pisi) in pea and identification of genes involved in resistance by DeepsuperSAGE transcriptome profiling     

Alberto Martín-Sanz  Trinidad Aparicio  José Carlos Santana  Pedro García  Peter Winter  Constantino Caminero  Marcelino Pérez de la Vega 《Euphytica》2016,210(3):375-392

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Effects of fibre digestibility and level of roughage on performance and rumen fermentation of finishing beef cattle     

Sousa  Dannylo Oliveira  Mesquita  Bruno de Sousa  Pires  Alexandre Vaz  Santana  Miguel Henrique de Almeida  Silva  Luis Felipe Prada 《Tropical animal health and production》2017,49(7):1503-1510

Tropical Animal Health and Production - The objective was to evaluate effects of neutral detergent fibre (NDF) digestibility and level of fresh sugarcane on intake, body fatness, carcass...  相似文献   

Alternative control of Aedes aegypti resistant to pyrethroids: lethal and sublethal effects of monoterpene bioinsecticides          下载免费PDF全文

Indira MA Silva  Gustavo F Martins  Carlisson R Melo  Alisson S Santana  Ruan RN Faro  Arie F Blank  Péricles B Alves  Marcelo C Picanço  Paulo F Cristaldo  Ana Paula A Araújo  Leandro Bacci 《Pest management science》2018,74(4):1001-1012

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Evaluation of Antarctic krill (Euphausia superba) meal supplementation in diets for olive flounder (Paralichthys olivaceus)     

Kasun Tharaka  Tibiabin Benitez‐Santana  Buddhi E. Gunathilaka  Min‐Gi Kim  Chorong Lee  Jaehyeong Shin  Kyeong‐Jun Lee 《Aquaculture Research》2020,51(6):2291-2302

The supplemental effect of Antarctic krill meal (KM) into a low fish meal (FM) diet was evaluated for olive flounder (Paralichthys olivaceus). A 56% FM‐based diet was regarded as a high FM inclusion diet (HFM), and a low‐FM diet (LFM) was prepared by replacing 50% FM from the HFM. Four other diets were prepared by supplementing 3%, 6%, 9% and 12% KM into the LFM diet gradually replacing soy protein concentrate and tankage meal (designated as KM3, KM6, KM9 and KM12 respectively). Quadruplicate groups of fish were fed one of the diets for 12 weeks. The growth performance and feed utilization efficiency were improved by the dietary KM supplementation. Digestibility of dietary protein and dry matter was increased by the KM3‐9 diets. Haematocrit and haemoglobin were increased by KM supplementation. The innate immunity and antioxidant capacity assessed by Ig, antiprotease, lysozyme, GPx and SOD and the condition factor of fish were significantly increased by KM3‐9 diets. Moreover, goblet cell counts, villi length and fillet yield of fish were significantly improved by all the KM‐containing diets (KM3‐12). A 25‐day‐long challenge test with the Edwardsiella tarda pathogen showed that the cumulative mortality was higher in fish fed the LFM diet than in fish fed the HFM or KM‐supplemented diets. The results indicate that dietary KM supplementation in a LFM diet can increase growth performance and feed utilization efficiency, diet digestibility, intestinal development and functions, innate immunity and disease resistance of olive flounder. The recommended level of KM inclusion in a LFM diet seems to be 6.6% according to quadratic regression analysis.  相似文献   

Brown propolis extract in feed as a growth promoter of Nile tilapia (Oreochromis niloticus, Linnaeus 1758) fingerlings     

Fábio Meurer  Mateus Matiuzzi da Costa  Diogo Andrade Dubourcq de Barros  Samira Teixeira Leal de Oliveira  & Patrícia Santana da Paixão 《Aquaculture Research》2009,40(5):603-608

This study assessed the use of increasing levels of brown propolis extract (BPE) as a growth promoter in Nile tilapia fingerling feeds. In a complete randomized design, 75 Nile tilapia fingerlings with 60 days on average and weighing 4.1±0.1 g were assigned to 25 aquaria (60 L) and subjected to 5 treatments in 5 repetitions for 30 days. Propolis from Serra do Araripe, Cariri Region, South Ceará State – Brazil was used to produce the BPE. The treatments involved the addition of BPE to feed samples (0.91, 1.83, 2.74 and 3.65 g kg⁻¹) and feed control (without BPE). The final mean weight and the percentage of weight gain varied quadratically with the increase in BPE ( P <0.01), with a maximum of 2.22 g kg⁻¹. The other evaluated parameters were not affected by the treatments ( P >0.05). The level of best performance parameters was 2.22 g kg⁻¹, between the levels of 1.83 and 2.74 g BPE kg⁻¹ feed inclusion. These results indicate the potential to use the brown propolis extract as a growth promoter to Nile tilapia fingerlings.  相似文献   

Relative Exposure Index: an important factor in sea turtle nesting distribution     

J. Santana Garcon  A. Grech  J. Moloney  M. Hamann 《水产资源保护:海洋与淡水生态系统》2010,20(2):140-149

• 1. The threatened status of many sea turtle populations and their vulnerability to coastal development and predicted climate change emphasize the importance of understanding the role of environmental factors in their distribution and ecological processes. The factors driving the distribution of sea turtle nesting sites at a broad spatial scale is poorly understood.
• 2. In light of the lack of understanding about physical factors that drive the distribution of turtle nesting, the relationship between nesting site distribution and the exposure of coastal areas to wind and wind‐generated waves was analysed. To achieve this, a Relative Exposure Index (REI) was developed for an extensive area in north‐eastern Australia and values of the index for nesting sites of five different sea turtle species and randomly selected non‐nesting sites were compared.
• 3. Although there are differences between species, the results show that sea turtles nest in areas of higher REI values suggesting that wind exposure is related to the spatial distribution of sea turtle nesting sites, and it may also influence nest site selection in female turtles and/or the dispersal of hatchlings towards oceanic currents.
• 4. The combination of these results with further research on other driving environmental factors, like oceanic currents, has the potential to allow for the identification and prediction of future nesting sites, for which conservation and management may become essential. Copyright © 2009 John Wiley & Sons, Ltd.

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Assessing the impact of climate change on the worldwide distribution of Dalbulus maidis (DeLong) using MaxEnt     

Paulo A Santana  Lalit Kumar  Ricardo S Da Silva  Jardel L Pereira  Marcelo C Picano 《Pest management science》2019,75(10):2706-2715

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Effects of Incubation Temperature and Semen Pooling on the Viability of Fresh,Chilled and Freeze‐Thawed Canine Semen Samples     

M Batista  M Santana  D Alamo  F González  T Niño  F Cabrera  A Gracia 《Reproduction in domestic animals》2012,47(6):1049-1055

This study assessed the effects of different incubation temperatures on semen viability and the influence of pooling on semen longevity. In experiment 1, semen samples were collected from five dogs, individually processed (individual semen: IS) and then aliquots from each male were pooled (pooled semen: PS). Semen samples (IS and PS) were diluted in a Tris‐glucose‐yolk extender and preserved as fresh (37 and 25°C) and chilled semen (4°C). Sperm motility and the percentages of sperm abnormalities and acrosome membrane integrity were assessed for 24 h. Storage at 25 or 4°C for the first 24 h yielded similar semen quality, but incubation at 37°C caused drastic reduction in sperm motility from 8 h of incubation onwards. In experiment 2, the semen was processed in the same way to that of experiment 1 and then preserved at 25 or 4°C until semen inactivation. Semen that was incubated at 25°C became completely inactive after 3–4 days of storage, while semen that was preserved at 4°C presented with more gradually decreased sperm motility (mean values of 40–60% for the first 8 days). In addition, the mixing of semen was only observed to influence the sperm quality of the samples stored at 4°C. In experiment 3, semen was collected from five dogs, pooled and frozen in liquid nitrogen; after thawing, it was preserved at 37, 25, 15 and 4°C, and the sperm quality was defined. The motility of the freeze‐thawed semen samples decreased quickly in the first 4 h after thawing, regardless of the preservation temperature of the thawed semen. This study confirmed that semen preserved at 37°C should be used within a maximum of 12 h, while the semen stored at 25°C shows acceptable quality for 24 h. Chilled semen presented highest most sustainable quality, especially when semen is processed as pooled semen.  相似文献