Sectional notes     

Frank Hussey  Wn. H. Martin  J. B. R. Dickey  W. O. Strong  A. E. Mercker  E. V. Hardenburg 《American Journal of Potato Research》1933,10(7):142-146

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Production, behaviour and fertility of Merino wethers, hemi-castrates with reduced testicular parenchyma and induced cryptorchids     

FM FOSTER  RB JACKSON†  DL HOPKINS‡ 《Australian veterinary journal》1993,70(8):289-293

Greasy wool production, body weight, behaviour and fertility of male, fine wool Merino sheep were studied from 10 to 21 months of age to assess their suitability for wool production. The males were either castrated (wethers), or were hemi-castrated with a vasectomy and reduction (either partially or in full) of the parenchyma of the retained testicle, or the testicles pushed up into the ingulnal canal and the scrotum shortened (induced cryptorchids). There were significant differences among all groups in body weight, with increases being associated with the larger amounts of testicular tissue present. Fertility was low in the induced cryptorchids at 19 months of age. The hemi-castrates with reduced testicular parenchyma were infertile. The hemi-castrates with reduced testicular parenchyma had significantly heavier greasy fleece weights than the wethers and induced cryptorchids, which had similar fleece weights. The wether group suffered a higher prevalence of posthitis in spring and autumn than the hemi-castrate or induced cryptorchid groups. Those hemi-castrates with the largest amount of testicular parenchyma retained and the induced cryptorchids exhibited masculine behaviour patterns and had an increased incidence of fly strike to the head. The principle of hemi-castration and reduction of the testicular parenchyma is shown to be applicable in wool producing flocks with the potential to increase greasy wool production while minimising the management and marketing limitations previously associated with induced cryptorchids.  相似文献   

Echinococcus granulosus infection of foxes in south-eastern New South Wales     

DL OBENDORF  MJ MATHESON  RCA THOMPSON 《Australian veterinary journal》1989,66(4):123-124

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Serum procollagen type III peptide levels in normal rhesus monkeys     

Cornelius C  Strong S  Smith C  Lee B 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1990,19(4):105-108

Serum levels of the amino-terminal peptide of Type III procollagen (P-III-P) were assayed by radioimmunoassay in 48 Rhesus monkeys from 0.7 to 26.4 years of age. Serum P-III-P levels in ten juvenile monkeys (0.7-4.7 yrs.) were significantly higher (84.5 +/- 66.2 ng/ml, p = 0.05) and ranged from 29.6 to 238.0 ng/ml as compared with 38 monkeys over 5 years of age (21.7 - 9.4 ng/ml), which ranged from 8.5 to 55.5 ng/ml. No significant differences in serum P-III-P levels were observed between any age groups over 5 years of age (5-10, 10-15, 15-20, and > 20) or between male and female monkeys within any age category.  相似文献   

Chemoprophylaxis of fascioliasis with triclabendazole     

Boray JC  Jackson R  Strong MB 《New Zealand veterinary journal》1985,33(11):182-185

In a field experiment, moderate to heavy natural concomitant infections with immature and mature Fasciola hepatica were treated with triclahendazole at a dose rate of 10 mg/kg and an efficiency of 99.8% was achieved. Subsequent treatments of all susceptible farm animals at the same dose rate at intervals of eight to eleven weeks were carried out for 14 months; no patent infections could be detected in sheep and cattle during the whole period. Evidence is presented that pasture contamination with liver fluke was reduced to a negligible level for a further 12 months after the final treatment. It is suggested that, if regular treatments with triclabendazole are given within the pre-patent period of Fasciola hepatica infection for the whole season, the infection can be eradicated or reduced to such a low level that control of the disease could be maintained with less frequent strategic drenching for a considerable period.  相似文献   

The Economic and Technical Evaluation of New Pesticides 1)     

B.C. Lever  W.M. Strong 《EPPO Bulletin》1973,3(3):119-131

This paper describes the high costs and risks associated with pesticide research and highlights the need to refine methods of identifying research targets and of determining the economic viability of chemicals that have shown biological activity.  相似文献   

In vitro and in vivo modulation of the equine immune response by parapoxvirus ovis     

Horohov DW  Breathnach CC  Sturgill TL  Rashid C  Stiltner JL  Strong D  Nieman N  Holland RE 《Equine veterinary journal》2008,40(5):468-472

REASON FOR PERFORMING STUDY: While immune modulators are used routinely in equine medicine, their mechanism of action is not always known. OBJECTIVES: To determine the effect of a commercial preparation of inactivated parapoxvirus ovis (Orf virus; PPVO) on cytokine gene expression by equine peripheral blood mononuclear cells (PBMC) both in vitro and in vivo. METHODS: PBMC were prepared from 6 mixed-breed yearlings and cultured in vitro with PPVO with or without Concanavalin A (Con A) for 24 h. Effects on the expression of IFNalpha, IFNbeta IFNgamma, TNFalpha and IL-18 were analysed by real time quantitative PCR (RT-PCR). In addition, 12 yearling horses were treated with PPVO and whole blood RNA samples were prepared at regular intervals to assess effects on in vivo cytokine gene expression. Six of those yearlings were later treated with saline and served as treatment controls. Nine additional yearlings were injected intradermally with a single dose and their injection sites biopsied at 24 and 48 h for cytokine expression. RESULTS: In vitro culture of PBMC with PPVO led to a significant increase in IFNalpha and IFNbeta gene expression compared to mock-stimulated cultures. In addition, expression of IFNgamma and TNFalpha was significantly higher in PBMC stimulated with PPVO and Con A, than those stimulated with Con A alone. No changes were observed in IL-18 gene expression in vitro. Treatment of horses with a 3-dose regimen of PPVO resulted in elevation of IFNgamma gene expression, which was detected 24 h after the first dose and declined thereafter. Intradermal inoculation led to increased expression of IFNgamma along with IFNbeta, IL-15 and IL-18. CONCLUSIONS: Together these results indicate that PPVO stimulated IFNgamma production both in vitro and in vivo. Increased cytokine expression could account for its immunomodulatory activity. POTENTIAL RELEVANCE: The absence of adverse reactions and clear indications of increased expression of cytokine gene expression supports previous clinical uses for this immune modulator in those situations when increased expression of IFNgamma is warranted.  相似文献   

Effects of pH, sodium bicarbonate, cryoprotectants and foetal bovine serum on the cryopreservation of European eel sperm.     

DL Garzón  DS Peñaranda  L Pérez  F Marco‐Jiménez  X Espert  T Müller  M Jover  JF Asturiano 《Reproduction in domestic animals》2008,43(1):99-105

The main objective of the present study was to evaluate the influence of pH and bicarbonate concentration in the activation or inhibition of European eel (Anguilla anguilla) spermatozoa and to evaluate the effect of different cryoprotectants: dimethyl sulphoxide (DMSO), acetamide, ethylene glycol, propanol, glycerol and methanol (MeOH). The effect of these factors was evaluated comparing the percentage of motile cells, the percentage of alive cells (by Hoechst staining) and the spermatozoa morphometry pre- and post-cryopreservation (by computer-assisted morphology analysis). Based on the above findings, three cryoprotectants (DMSO, MeOH and glycerol) were chosen and evaluated in two media (P1 and P1 modified) with different concentrations of NaHCO(3) and in the presence or absence of foetal bovine serum (FBS). The effect of these factors was evaluated comparing the percentage of alive and motile cells post-cryopreservation. DMSO was the cryoprotectant showing better results in relation to the percentage of spermatic alive cells post-freezing and caused a smaller modification of the head spermatozoa morphology. The combination of P1-modified medium with DMSO and containing FBS increased slightly but significantly the percentage of motile spermatozoa post-cryopreservation.  相似文献   

Are the biogeochemical cycles of carbon,nitrogen, sulfur,and phosphorus driven by the “Fe<Superscript>III</Superscript>–Fe<Superscript>II</Superscript> redox wheel” in dynamic redox environments?     

Yichun?Li  Shen?YuEmail author  James?Strong  Hailong?Wang 《Journal of Soils and Sediments》2012,12(5):683-693

Purpose  

Iron’s fluctuation between the II (ferrous) and III (ferric) oxidation states has been coined as the “Fe^III–Fe^II redox wheel.” Numerous studies have coupled the “iron redox wheel” with the biogeochemical cycle of carbon (C), nitrogen (N), sulfur (S), or phosphorus (P) individually in soils or sediments, but evidence suggests that the Fe^III–Fe^II redox wheel drives the biogeochemical cycles interactively in a fluctuating redox microenvironment. The interactions of the Fe^III–Fe^II redox wheel with the biogeochemical cycles of C, N, S, and P in the fluctuating redox environments were reviewed in this paper.  相似文献   

X-RAY DIFFRACTION PATTERNS     

Strong WW 《Science (New York, N.Y.)》1914,40(1037):709-710

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