Spatial genetic structure of dusky dolphin,Lagenorhynchus obscurus,along the argentine coast: preserve what scale?          下载免费PDF全文

Rocio Loizaga de Castro  Silvana L. Dans  Enrique A. Crespo 《水产资源保护:海洋与淡水生态系统》2016,26(1):173-183

Effect of Conditioning Horses One,Two or Three Times a Week with 2 Runs of 100 Meters at Near Maximal Speed on v4     

A. Lindner  R. Signorini  L. Brero  E. Arn  R. Mancini  A. Enrique 《Journal of Equine Veterinary Science》2011,31(5-6):238-239

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Use of a graft of demineralized bone matrix along with TGF-β1 leads to an early bone repair in dogs     

Servin-Trujillo MA  Reyes-Esparza JA  Garrido-Fariña G  Flores-Gazca E  Osuna-Martinez U  Rodriguez-Fragoso L 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2011,73(9):1151-1161

Tibia fractures are common in small animal practice. Over the past decade, improvements to animal internal fracture fixation have been developed. TGF-β1 has been shown to be crucial in the development, induction and repair of bone. In present study, we investigate the effect of local application of a graft demineralized bone matrix (DBM) along with TGF-β1 in a model of open osteotomy induced experimentally in dogs. Tibia fracture was brought about by using an open osteotomy model in young male dogs. Fracture repair was evaluated by a histological and biochemical analysis. Collagen content, proteolytic activity and urokinase-type plasminogen activator (uPA) expression were analyzed at the end of the study. Radiographic analysis, alkaline phosphatase and hematological evaluation were performed weekly. At the fifth week, there was an improvement and restoration of bone architecture in animals treated with a graft containing TGF-β1 (5 ng/ml) compared with the control and graft groups, as was evidenced by the presence of an early formation of wide callus and bone regeneration. In addition, local application of TGF-β1 led to an increase in collagen and proteolytic activity. More immunopositive osteoclast and mesenchymal cells were found in bone tissue from animals treated with TGF-β1 as compared with the control group. No changes in alkaline phosphatase, hematological and clinical parameters were observed. This study shows that the combined use of DBM along with TGF-β1 is able to improve and accelerate the bone repair.  相似文献   

Frequency of removal reasons of sows in Southeastern Mexico   总被引：1，自引：1，他引：0  

Segura-Correa JC  Ek-Mex E  Alzina-López A  Segura-Correa VM 《Tropical animal health and production》2011,43(8):1583-1588

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Length of productive life of sows in four pig farms in the tropics of Mexico     

Segura-Correa JC  Ek-Mex EJ  Alzina-López A  Magaña-Monforte JG  Sarmiento-Franco L  Santos-Ricalde RH 《Tropical animal health and production》2011,43(6):1191-1194

The objective of this study was to determine the effect of some factors on the length of productive life (LPL), the number of parities (NP), and the culling interval (CI) of sows. The information from 2003 to 2009 of 3,746 sows with LPL and NP records and 5,819 sows with CI records from the four farms of Yucatan, Mexico was used. LPL was defined as the number of days between the first farrowing and culling or death and CI as the number of days between the last farrowing and culling. To determine the effects of farm, litter size at first farrowing (LSF1) and age at first farrowing (AF1) on LPL and NP, and of farm, LSF1 and culling reason on CI general linear models were used. Means and standard errors for LPL, NP, and CI were 496.4 ± 8.42 days, 3.35 ± 0.04 parities, and 48.3 ± 0.52 days, respectively. All factors had significant effects (P < 0.05) on LPL, NP, and CI. The sows from farm 2 stayed longer (806.0 days) and had more parities (5.25) than the sows from the other farms. Sows with the smallest litters (≤8 piglets) at first farrowing stayed the least time in the farm (675.1 days) and had the fewest parities (4.49). Gilts farrowing the first time before 331 days of age stayed longer time in the farm (726.4 days) and had more parities (4.81) in comparison with 331–348 and more than 348 days age groups. With respect to CI, the sows in farm 3 stayed the longest time in the farm. Sows with more than five parities were culled sooner after their last farrowing. In conclusion, differences between farms for LPL, PN, and CI were found. Females that farrowed at a short age and those with large litters stayed longer in the herd. Old sows and those culled for reproductive reasons stayed the least time in the herd after their last farrowing.  相似文献   

Cell viability effects and antioxidant and antimicrobial activities of Tunisian date syrup (Rub El Tamer) polyphenolic extracts     

Dhaouadi K  Raboudi F  Estevan C  Barrajón E  Vilanova E  Hamdaoui M  Fattouch S 《Journal of agricultural and food chemistry》2011,59(1):402-406

The aqueous-acetone polyphenolic extract of the traditionally derived date syrup, known as "Rub El Tamer", was analyzed using RP-HPLC-DAD and ESI-MS. The phenolic content of the extract was 394.53 ± 1.13 mg per 100 g of syrup with caffeoylsinapylquinic acid as the most abundant compound (72.23%). The extract exhibited strong antioxidant activities as evaluated using the ABTS (2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid)), DPPH (2,2-diphenyl-1-picrylhydrazyl) and FRAP (ferric reducing antioxidant power) methods. The extract antimicrobial potential against a range of microorganism strains showed that Staphylococcus aureus, Staphylococcus epidermidis, and Bacillus cereus were the most sensitive bacteria with MBC in the range of 0.5-0.05 mg/mL. Furthermore, in the presence of the syrup extract (8.18-131 μg/mL), the Human SH-SY5Y neuroblastoma and the 3T3 fibroblast cell lines showed dissimilar reduction of viability suggesting a higher cytotoxic effect against tumorigenic cells. Our results provide new insights into date syrup characterization which should stimulate further studies of this hot desert resource.  相似文献   

Response to salinity of three grain legumes for potential cultivation in arid areas     

Raúl López-Aguilar  Andrés Orduño-Cruz  Armando Lucero-Arce  Bernardo Murillo-Amador  Enrique Troyo-Diéguez 《Soil Science and Plant Nutrition》2013,59(3):329-336

Abstract

The material balance of all the chemical species associated with the phosphate sorption reaction by two amorphous clays, silica-alumina gel and synthetic goethite was investigated adjusting the initial pH to 4.0, 5.0, 6.0, and 7.0. Phosphate sorption was found to decrease with increasing initial pH. During phosphate sorption, the equilibrium pH rose, adsorption of Cl^- decreased to a state of negative adsorption, adsorption of Na⁺ increased markedly, silicate was released, and Al in the solution was precipitated. With increasing initial pH, the amount of apparent released OH^- increased, the amount of Na⁺ adsorption increased, and the amount of released silicate decreased. The overall relationship of the material balance is explained in terms of the charge balance associated with phosphate sorption.  相似文献   

Study of conifer nitrogen nutrition using hydroponic cultures: Application to fertigation systems     

Africa Sánchez  Carlos Cadahía  Enrique Eymar  Alberto Masaguer 《Journal of plant nutrition》2013,36(7):1007-1024

Nitrogen (N) optimization of a nutrient solution for ornamental conifers was obtained with two different experiments in hydroponic cultures: First, by using three different NO₃ ^‐/NH₄ ⁺ ratios (60/40, 55/45, and 40/60 in percentages of the total N supplied); and, secondly by testing three total N levels (3.7; 4.7 and 5.5 mmol L^‐1). Best growth was obtained with a NO₃ ^‐/NH₄ ⁺ ratio of 55/ 45 and a total N level of 3.7 mmol L^‐1. With these experiments, reference levels of foliar concentrations of the macronutrients N, phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and the biochemical indices, such as chlorophyll and starch levels, were obtained with the treatments corresponding to the plants with the higher growth. In the course of a growth cycle, a substrate assay with two different pot mixes (moss peat plus perlite and black peat plus sepiolite 60/40 ‐% v/v‐) was carried out by using the best N ratios and doses in nutrient solutions as obtained in hydroponics. The results indicated that the same N fertilization in fertigation systems changes depending on the different physicochemical properties of the substrates used; in this case, depending on the different physical properties of the two substrates. By applying DRIS to perform nutritional diagnosis, it is possible to find nutritional limitations to plant growth, but not additional factors, such as water‐air relationships in the growth media.  相似文献   

Changes in dietary fiber content and its composition as affected by processing of black beans (Phaseolus vulgaris,Tamazulapa variety)     

Enrique Acevedo  Luis Velázquez-Coronado  Ricardo Bressani 《Plant foods for human nutrition (Dordrecht, Netherlands)》1994,46(2):139-145

This paper presents the effect that the traditional cooking process of black beans (Phaseolus vulgaris, Tamazulapa variety) has on the quantity and composition of soluble (SDF) and insoluble (IDF) dietary fiber of beans, as well as on its protein digestibility and protein quality. There was an increase of IDF from 18.1% in cooked beans to 22.4% in fried beans, and a decrease in SDF from 8.4% to 6.6%, respectively. Starch content decreased from 34.5% to 31.3%. No change was found in lignin. The xylose content was higher in IDF than in SDF and decreased to some extent from cooked to fried beans. Arabinose content was similar in IDF and SDF with no change caused by processing. The fraction containing glucose, mannose and galactose in IDF was higher than in SDF, the content increasing in IDF and decreasing in SDF, with processing. Protein content in IDF was higher than in SDF, with no major change when processing. About 29.5% of the total protein of beans was bound in DF. Protein digestibility and protein quality decreased from cooked to fried beans and was positively related to IDF.  相似文献   

Exploitation of Exotic, Cultivated Solanum Germplasm for Breeding and Commercial Purposes     

Enrique Ritter  Leire Barandalla  Raquel López  José Ignacio Ruiz de Galarreta 《Potato Research》2008,51(3-4):301-311

Native potato species (NPS) are cultivated potatoes which do not belong to S. tuberosum ssp. tuberosum. They are maintained by the farmers of the Andes for subsistence under harsh environmental conditions where other potatoes cannot compete. Within the huge phenotypic variability between and within these species certain accessions possess resistances to different pests and diseases, remarkable culinary and processing quality and favourable nutritional properties. We present first evaluation results of a set of NPS for these characters and discuss prospects for exploiting this valuable germplasm for breeding and for developing novel products for niche markets.  相似文献