Kongresse des Jahres 1938     

F. Stellwaag  B. Götz 《Journal of pest science》1938,14(11):125-129

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Mitteilungen aus der Deutschen Gesellschaft f. angew. Entomologie E.V. Vorstandswahl     

St. 《Journal of pest science》1938,14(12):148-148

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Studien über die Forstorganifation und die Ausübung der Forstgerichtsbarkeit beim Salzmaieramt Craunstein     

Dr. phil. Edgar Kraufen 《European Journal of Forest Research》1938,60(24):770-781

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Some comparisons of dusts for potato leafhopper control on long island     

J. B. Skaptason 《American Journal of Potato Research》1938,15(10):271-277

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Mosaic versus leafroll     

B. A. Brown 《American Journal of Potato Research》1926,3(4):121-122

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Der heutige Stand der Reblausfrage in Ungarn     

J. Jablonowski 《Journal of pest science》1925,1(2):18-19

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Prediction of digestibility and energy concentration of winter pasture forage and herbage of low-input grassland--a comparison of methods.     

W Opitz v Boberfeld  P C Theobald  H Laser 《Archives of Animal Nutrition》2003,57(3):167-176

Regarding the estimation of the energy concentration or digestibility of herb-dominated forage and plant samples from winter pastures, it could be expected that the estimation is only reliable when in vitro methods with rumen fluid as inoculum (= gas production techniques) are used. For the verification of this thesis based on logical reflections, an in vitro-method with rumen fluid added as inoculum, as well as chemical, and enzymatic methods were applied under consideration of existing estimating functions. As a possible reason for the observed divergence of the methods, effects of fungal infections or, respectively, secondary compounds in herbs are discussed. At the present state of knowledge, it is adequate to estimate the energy concentration in vitro by gas tests, as far as fattening types like suckler cows and beef cattle are concerned, maybe in contrast to the forage evaluation for dairy cows.  相似文献   

Effect of Collection Rhythms and Season on Rabbit Semen Production     

A Nizza  C Di Meo  S Taranto 《Reproduction in domestic animals》2003,38(6):436-439

The effects of collection regimen and time of year on rabbit semen production were determined in this study. A total of 14 crossbreed Hyla bucks were used in winter and summer. In each season, rabbits were assigned to two groups. In group 1, (n = 7) rabbits were subjected to an extensive collection regimen (two ejaculates per male, once daily/week) and in group 2, (n = 7) a semi‐intensive semen collection regimen was performed (two ejaculates per male, twice weekly). The traits recorded for each sample were libido, volume, pH, motility, sperm concentration, percentage of alive spermatozoa and sperm abnormalities. The results obtained in this study indicate that when increasing collection frequency, the rate of useful collections decreased (from 0.81 ± 0.017 to 0.69 ± 0.016; p < 0.01). The rate of useful collection also decreased in the transition from winter to summer (from 0.79 ± 0.018 to 0.70 ± 0.017; p < 0.01). Among the ejaculate characteristics studied, only volume/ejaculate (from 0.64 ± 0.015 to 0.53 ± 0.017; p < 0.01) and spermatozoa/ml (from 406 ± 15 to 359 ± 13 million; p < 0.01) appeared negatively affected by collection. In winter fewer volume/ejaculates were produced (0.55 ± 0.015 vs 0.60 ± 0.016 ml; p < 0.01) and fewer spermatozoa/ml (360 ± 14 vs 394 ± 16 million; p < 0.01) than in summer. The doses produced per ejaculate decreased as collection frequency increased, but the number of doses produced per week was higher in the semi‐intensive than the extensive rhythm (26.5 ± 2.1 vs 20.9 ± 1.5; p < 0.01). The results suggest that a semi‐intensive rhythm may be viewed favourably.  相似文献   

Linkage and QTL mapping for Sus scrofa chromosome 7   总被引：1，自引：0，他引：1  

G. Yue  A. Stratil  S. Cepica  J. Schröffel Jr    D. Schröffelova  L. Fontanesi  M. Cagnazzo  G. Moser  H. Bartenschlager  G. Reiner  H. Geldermann 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2003,120(S1):56-65

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Incidence of Salmonellae in Captive and Wild Free‐Living Raptorial Birds in Central Spain     

M. P. Reche  P. A. Jimnez  F. Alvarez  J. E. García de los Ríos  A. M. Rojas  P. De Pedro 《Zoonoses and public health》2003,50(1):42-44

A total of 595 faecal samples from raptorial birds, either captive or free‐living, residing in GREFA Wildlife Hospital were bacteriologically examined using various selective media and an Automated Diagnostic Assay System for Salmonella detection. Serotype and phage type of the strains identified as Salmonella was determined. In the captive group, of the 285 samples examined, 21 (7.36%) were positive for Salmonella. Serotyping revealed that most of the individuals were infected by Salmonella serotype Havana. This result suggested that there could be a source of contamination in the Hospital although it could not be established. In the wild free‐living group, over 310 samples examined (4.19%) were positive for Salmonella. The Salmonella isolates showed a major variety of serotypes: Enteritidis, Adelaide, Brandenburg, Newport, Typhimurium, Hadar, Saintpaul and Virchow. Most of them are similar to those commonly described in isolates from human and domestic animals. These results indicate that wild birds could be involved in the dissemination of Salmonella in humans or domestic animals or vice versa.  相似文献