The effect of being housed with adult female flock-mates on the age at puberty of autumn-born ewe-lambs     

Abecia  José-Alfonso  Barrio  Antonio  Ruiz  José-Antonio 《Veterinary research communications》2022,46(2):609-612

Veterinary Research Communications - Twenty-five ewe-lambs born in November were used to measure the effect of the presence of cyclic or non-cyclic adult ewes on the age at first fertile estrus....  相似文献   

Effect of water stress conditioning on morphology,physiology and field performance of Pinus halepensis Mill. seedlings     

Royo  Antonio  Gil  Luis  Pardos  José A. 《New Forests》2001,21(2):127-140

Five-month-old Pinus halepensis Mill. seedlings were subjected to 4 irrigation treatments for 8 weeks. After the treatments, morphological and physiologicalattributes assessed included height, diameter, dry weight, water relations parameters, and determination of N, P, K, soluble carbohydrates, and starch concentrations. The remaining seedlings were field planted. Survival and height growth were recorded forfour growing seasons after planting. The mostsignificant effect of irrigation was onmorphology. Increased irrigation lead toseedlings with significantly higher height,root collar diameter and shoot and rootbiomass. Starch and soluble carbohydrateconcentrations were also affected byirrigation. However, parameters derived frompressure-volume curves were not significantlydifferent among treatments, nor were N, P, andK concentrations. There were no differencesamong treatments for survival in the field,which was highly related to summer rainfall. Incomparison, absolute and relative heightgrowth showed some significant but minordifferences among treatments.  相似文献   

Relationship between root growth potential and field performance in Aleppo pine     

Antonio D. Del Campo  Rafael M. Navarro-Cerrillo  Javier Hermoso  Antonio J. Ibáñez 《Annals of Forest Science》2007,64(5):541-548

Commercial stocks of Aleppo pine in Spain vary in quality, but there is no accepted standard for evaluating quality. A RGP test was applied to six commercial seedling stocklots at two dates (November, February) and under two test conditions (growth-chamber, greenhouse). The RGP’s predictive ability was evaluated on two contrasting sites. There was a considerable variation in the RGP depending on application date, test conditions and stock factors. The RGP results for November were correlated with each other but they did not explain outplanting performance. The February results in the growth-chamber correlated well with survival at both sites. Regression models explained survival both in the lower (R ² = 97%) and in the higher (R ² = 92%) quality sites. RGP has a valid predictive ability for this species although it is sensitive to the test conditions. In this sense, a shorter and more intensive test performed right before planting may be more reliable.  相似文献   

Ultrastructural characterization of normal Merkel cells in the dog          下载免费PDF全文

Gustavo A. Ramírez  Francisco Rodríguez  Pedro Herráez  Ayoze Castro‐Alonso  Marisa Andrada  Antonio Espinosa‐de‐los‐Monteros 《Veterinary dermatology》2015,26(5):328-e69

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Assessment of coagulation utilizing thromboelastometry in dogs undergoing orthopedic surgery          下载免费PDF全文

Barbara Bruno DVM  Cristiana Maurella DVM  Sara Falco DVM  Alberto Tarducci DVM  Renato Zanatta DVM  PhD  Paola Gianella DVM  PhD  DACVIM  Antonio D'Angelo DVM  PhD  DECVN  DECBHM  Lisa Piras DVM  PhD  Andrea Di Bella DVM  MRCVS  Antonio Borrelli DVM  PhD  MS 《Journal of Veterinary Emergency and Critical Care》2015,25(3):358-363

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Cultural values and sustainable forest management: the case of Europe     

Mauro Agnoletti  Antonio Santoro 《Journal of Forest Research》2015,20(5):438-444

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Survey of polychlorinated dibenzo-p-dioxins (PCDDs), Polychlorinated Dibenzo-p-furans (PCDFs), polychlorinated biphenyls (PCBs), and mineral components in Italian citrus cold-pressed essential oils     

Cautela D  Castaldo D  Santelli F  Laratta B  Pirrello AG  Malorni A  Boscaino F 《Journal of agricultural and food chemistry》2007,55(4):1627-1637

Investigation of PCDDs, PCDFs, PCBs, Al, As, Pb, Ba, Co, Cu, Cr, Fe, Mn, Cd, Ag, Sn, Zn, and Hg contents in 60 samples of cold-pressed essential oils produced in Calabria and Sicily in 2003-2005 was carried out. PCDDs, PCDFs, and PCBs were analyzed by HRGC-HRMS techniques using U.S. EPA 1613/94 and U.S. EPA 1668/A (1999) analytical methods. Mineral components were determined through GFAAS techniques; Hg content was determined by FI-M/H-AAS. The results of this study showed that essential oil contamination was due to a widespread pollution, typical background of rural areas, with relatively higher concentrations of PCDDs compared to PCDFs and little presence of PeCDF. Congeners OCDD, HpCDF, and OCDF were found at high concentrations. Regarding mineral components, mean values of Cr, Fe, and Ni were in agreement with data reported in the literature. Concentrations of As and Pb were below the maximum limits accepted by the current legislation. Finally, none of the samples analyzed were contaminated with Hg.  相似文献   

Use of natural and modified cyclodextrins as inhibiting agents of peach juice enzymatic browning   总被引：1，自引：0，他引：1  

López-Nicolas JM  Pérez-López AJ  Carbonell-Barrachina A  García-Carmona F 《Journal of agricultural and food chemistry》2007,55(13):5312-5319

Although cyclodextrins (CDs) have been successfully used as antibrowning agents in different fruit juices, no research has studied the effect of these compounds on enzymatic browning in peach juice. In this paper, the color of fresh peach juice was evaluated in the presence of two types of natural (alpha-CD and beta-CD) and a modified (maltosyl-beta-CD) CD, and the effectiveness of these compounds as browning inhibitors was determined using the color space CIELAB system. Moreover, to clarify the mechanism by which CDs inhibit peach juice enzymatic browning, the process was kinetically modeled in the absence and presence of CDs using a colorimetric method; the apparent complexation constants between the mixtures of diphenols present in peach juice and some types of CD were calculated. The results show that the highest affinity constant was presented by alpha-CD (Kc = 18.31 mM-1) followed by maltosyl-beta-CD (Kc = 11.17 mM-1), whereas beta-CD was incapable of inhibiting peach juice enzymatic browning. Keywords: Cyclodextrin; browning; peach; juice; color; polyphenol oxidase.  相似文献   

Changes in the volatile composition of a semihard ewe milk cheese induced by high-pressure treatment of 300 MPa     

Juan B  Barron LJ  Ferragut V  Guamis B  Trujillo AJ 《Journal of agricultural and food chemistry》2007,55(3):747-754

The effect of high-pressure (HP) treatment (300 MPa, 10 min) on the volatile profile of semihard ewe milk cheeses was investigated. The HP treatment was applied at two different stages of ripening (1 and 15 days; 3P1 and 3P15) and microbiota, proteolysis indexes (soluble nitrogen and total free amino acid content), and volatile compounds were assayed at 15, 60, 90, and 150 days of ripening. The intensity of odor and aroma of cheeses was also assayed. 3P1 cheeses presented the highest content of free amino acids and were characterized by the lowest amounts of aldehydes, ketones, short-chain free fatty acids, and terpenes and higher levels of ethanol and ethyl esters. 3P15 cheeses were characterized by the highest content of short-chain free fatty acids and pyruvaldehyde and the lowest abundance of secondary alcohols and were more similar to control cheeses than those HP-treated on the first day. Intensities of odor and aroma were not significantly influenced by the HP treatment. However, the panellists found some differences in 3P1 as compared with control and 3P15 cheeses in what they perceived as lower odor and aroma quality.  相似文献   

Effectiveness of microsatellite DNA markers in checking the identity of protected designation of origin extra virgin olive oil     

Pasqualone A  Montemurro C  Summo C  Sabetta W  Caponio F  Blanco A 《Journal of agricultural and food chemistry》2007,55(10):3857-3862

Collina di Brindisi is an Italian extra virgin olive oil that obtained the mark of protected designation of origin (PDO) according to EC Regulation 2081/92. The varietal requirements of the official production protocol of this oil foresee that this oil is prepared from cultivar Ogliarola (minimum 70%) and other Olea europaea L. cultivars that are diffused in the production area, accounting for a maximum of 30%. The aim of this work was to verify the effectiveness of microsatellite analysis in verifying the identity of Collina di Brindisi PDO olive oil. A preliminary assessment of product's quality by means of chemical analyses was also carried out. Microsatellite analysis clarified that the generic name Ogliarola, indicated in the technical sheet of this PDO oil, actually corresponded to the Ogliarola salentina cultivar. Furthermore, the obtained results showed that the examination of a limited number of DNA microsatellites enables the identification of the Ogliarola salentina cultivar in this PDO oil.  相似文献