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排序方式: 共有119条查询结果,搜索用时 15 毫秒
41.
Sung Dae LEE Hyun Jung JUNG Kyu Ho CHO Jun Cheol PARK In Cheul KIM Pil Nam SEONG Young Min SONG 《Animal Science Journal》2011,82(3):461-467
The objective of the present study was to investigate the effects of corn dried distiller's grains with solubles (DDGS) and enzyme premix (mannanase + phytase) supplementation on the growth performance, carcass and meat quality parameters in finishing pigs. Sixty hybrid pigs (L × LW × D) with initial weight of 63.92 ± 1.50 kg were used in a 3 × 2 factorial design with main effects of DDGS levels (0, 10 and 20%) and enzyme premix levels (0% vs. 0.14%). Average daily gain (ADG, P < 0.01) and average daily feed intake (ADFI, P < 0.05) were decreased due to an increased level of DDGS additive while the feed conversion ratio was improved (P < 0.05) by adding enzyme premix. The diet cost/gain (won/kg) was saved (P < 0.01) due to an increased level of DDGS additive. There were no significant differences in carcass characteristics and meat quality parameters of Longissimus dorsi muscle by DDGS level and enzyme premix. Palmitoleic acid, oleic acid and monounsaturated fatty acid (MUFA) decreased (P < 0.05) according to DDGS level. The results indicate that DDGS may be used in feeds for finishing pig as a replacement of corn and soybean meal without affecting their carcass characteristics and meat quality. 相似文献
42.
R. F. PARK 《Plant pathology》1990,39(3):416-423
Infection of wheat seedlings by Puccinia striiformis f.sp. tritici was investigated under both laboratory (constant temperature) and field conditions using a 15-h period of 100% r.h. In laboratory studies, infection decreased from 100% at 15 4 C to 0.8% at 20.5 C, and it was estimated that no infection would occur at or above 20.8 + 0.2 C. In contrast, high levels of infection occurred under field conditions even when temperatures fluctuated within the range 19–30°C. Overnight infection experiments conducted at Toowoomba over an 18-month period demonstrated that periods of moisture and temperature favouring infection by P. striiformis f.sp. tritici occurred regularly, even during summer, and that high temperature was a limiting factor on only 3% of the nights tested. This indicates that stripe rust could oversummer readily in this region of the eastern Australian wheat belt, at least in sheltered areas, given a susceptible host. Regression equations relating mean temperature to infection and minimum temperature to infection identified mid to late autumn as an important period in the epidemic development of the disease in this region. The amount of rain recorded during this period was closely associated with subsequent levels of stripe rust observed in commercial crops over the years 1983–87. 相似文献
43.
Seonmi KANG Sangwan PARK Hyunwoo NOH Jiyoon KWAK Kangmoon SEO 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2015,77(6):685-692
This study was performed to evaluate changes in intraocular pressure (IOP) during
standard coaxial phacoemulsification using 4 different bottle heights (BHs) and 2
different incision sizes. Coaxial phacoemulsification was performed with a venturi-based
machine in 8 enucleated canine eyes through 3.0 and 3.2 mm clear corneal incisions (CCIs).
A pressure transducer inserted in the peripheral cornea monitored the IOP in real-time.
The surgery was subdivided into 4 stages: sculpt-segment removal, irrigation/aspiration,
capsular polishing and viscoelastic removal. The mean IOP and the difference between the
maximum and minimum IOPs were calculated at each stage and compared. The ultrasound time
and volume of irrigation fluid used were recorded. The mean IOP increased with an
elevation in the BH. The mean IOP in the irrigation/aspiration stage was significantly
higher than that in the sculpt-segment removal stage at the same BH. The difference
between the maximum and minimum IOP at each stage was greater in the 3.2 mm than the 3.0
mm CCIs, although the mean IOP was lower with the 3.2 mm than the 3.0 mm CCIs. The
ultrasound time and irrigation fluid volume were greater with the 3.2 mm than the 3.0 mm
CCIs. Therefore, fluidic parameters during each stage could be reassessed and adjusted to
reduce complications arising from an elevated IOP. Phacoemulsification with 3.0 mm CCIs at
a lower BH might lead to less stress on the eye from IOP fluctuations, ultrasound energy
and irrigation fluid. 相似文献
44.
Jin HUR Seong Kug EO Sang-Youel PARK Yoonyoung CHOI John Hwa LEE 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2015,77(12):1693-1696
Salmonella Typhimurium strain expressing the Actinobacillus
pleuropneumoniae antigens, ApxIA, ApxIIA, ApxIIIA and OmpA, was previously
constructed as a vaccine candidate for porcine pleuropneumonia. This strain was a live
attenuated (∆lon∆cpxR∆asd)Salmonella as a delivery host
and contained a vector containing asd. An immunological study of
lymphocyte proliferation, T-lymphocyte subsets and cytokines in the splenocytes of a mouse
model was carried out after stimulation with the candidate Salmonella
Typhimurium by intranasal inoculation. The splenic lymphocyte proliferation and the levels
of IL-4, IL-6 and IL-12 of the inoculated mice were significantly increased, and the T-
and B-cell populations were also elevated. Collectively, the candidate may efficiently
induce the Th1- and Th2-type immune responses. 相似文献
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48.
Sieun PARK Min JANG Kija LEE Hojung CHOI Youngwon LEE Inchul PARK Sooyoung CHOI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(8):1196
This study aimed to determine the optimal placement of the region of interest (ROI) among four anatomical sites—pulmonary artery (PA), pulmonary vein (PV), aortic arch (AA), and carotid artery (CA)—in computed tomography (CT) brain angiography with automatic bolus tracking in healthy beagle dogs. Six beagles were included, and CT brain angiography was performed four times for each dog, to cover each ROI. The scan parameters, amount, and injection rate of the contrast medium were the same. The major intracranial arteries were selected for quantitative and qualitative evaluation: caudal cerebellar artery (CcA), basilar artery (BA), rostral cerebellar artery (RcA), caudal cerebral artery (CCA), middle cerebral artery (MCA), and rostral cerebral artery (RCA). Quantitative evaluation showed significantly higher CT attenuation values for the RcA, CCA, and MCA in the PA group and RcA and MCA in the PV group than in the CA group. Qualitative analysis revealed significantly higher scores for the BA, CCA, and MCA in the PA and PV groups than in the CA group. Venous contamination did not differ significantly among the ROIs, but the mean scores of the AA and CA groups were higher than those of the PA and PV groups. CT brain angiography using bolus tracking in the beagle dogs showed that the ROI should be placed at the PA or PV rather than at the CA for optimal images with strong contrast enhancement of the BA, RcA, CCA, and MCA and minimal venous contamination. 相似文献
49.
T‐H. CHUNG G‐B. PARK C‐Y. LIM H‐M. PARK G‐C. CHOI H‐Y. YOUN J‐S. CHAE C‐Y. HWANG 《Equine veterinary journal》2010,42(1):73-78
Reasons for performing study: Identification of the species and strain of dermatophyte can play an effective role in control of disease outbreaks by establishing the source of infection. Current methods of identification are based on cultural and microscopic methods, often involving weeks before a positive identification are made. A rapid molecular diagnostic method would therefore be an important laboratory technique, but requires confirmation in equine clinical practice. Objectives: To test the sensitivity and specificity of molecular diagnostic methods applied to a racehorse herd from the Korean Racehorse Authority (KRA). Methods: A total of 57 DNA samples were collected from hairs and crusts of skin lesions in KRA racehorses with histories and clinical signs suggestive of dermatophytosis, which was confirmed by dermatophyte‐specific PCR amplification analysis using the primer pair for the chitin synthase 1 (CHS1) gene. Results: Thirty‐eight racehorses were definitively diagnosed with dermatophytosis using molecular and traditional diagnostic methods. PCR fingerprinting profiles using simple repetitive (GACA)4 primers showed that all diagnosed horses had the same pattern profile. Oligonucleotide sequencing of CHS1 gene PCR products confirmed Trichophyton mentagrophytes as the infectious agent. Conclusions: This study demonstrates that the PCR‐based molecular diagnostic method is sensitive and specific and offers fast precise diagnosis of dermatophytosis in horses. 相似文献
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