Pancreatic enzyme activities of pigs up to three weeks of age   总被引：1，自引：0，他引：1  

W G Pond  J T Snook  D McNeill  W I Snyder  B R Stillings 《Journal of animal science》1971,33(6):1270-1273

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A biochemical and pathological study of kidney diseases in slaughtered pigs     

G D Wilson  D G Harvey  C R Snook 《The British veterinary journal》1972,128(10):512-522

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Relationship between Prenatal Survival Rate at 70 days of Gestation and Morphometric Parameters of Vagina, Uterus and Placenta in Gilts     

WL Vianna  ME Pinese  A de  Campos Rosseto  PP Bombonato  PHM Rodrigues  A de  Sant''Anna Moretti 《Reproduction in domestic animals》2004,39(6):381-384

Swine uterine capacity affects litter size, and it could be used as a selection parameter of reproductive performance. Although there are some controversial results, evidences show that the catheter penetration length is positively correlated with litter size, and it could be used as a tool for predicting selection methods. The aim of this study was to determine whether there is any association between the prenatal survival rate and placental size at 70 days of gestation, the vaginal length [catheter penetration length during artificial insemination (AI)] and the uterine capacity in a homogeneous group of gilts. Sixty-six commercial-line gilts in pre-pubertal phase had their oestrus induced by hormonal treatment [600 UI of Equine Chorionic Gonadtrophin (eCG) i.m. and after a 72-h period 5 mg of luteinizing hormone (LH) i.m.], but only 40 gilts showed cyclicity after induction. The AI catheter penetration length was tested on these 40 gilts at the moment of AI using a calibrated AI catheter. Four gilts returned to oestrus and the other 36 were killed at around day 69 of pregnancy. The uterine length and weight showed a significant and positive correlation with the prenatal survival rate (p <0.05). The catheter penetration length was unable to predict the conceptus survival rate on 70 days of gestation; however, the uterine size influenced the survival rate positively. The mean placental area was positively correlated with the mean placental weight (p <0.0001), and both with the mean foetal weight (p <0.0001 and p <0.001, respectively). The analysis of the results obtained showed that neither did the catheter penetration length measurement during AI, nor the prenatal survival rate on day 70 of pregnancy predict the uterine capacity, but the uterine and placental size had a significant influence on the prenatal survival and foetus weight, respectively.  相似文献   

森林资源时态GIS数据存储与时空分析方法研究     

谢绍锋  肖化顺 《西北林学院学报》2011,26(1):181-186

在分析时态数据库的研究与应用现状基础上,针对森林资源数据特点,在对象—关系Oracle数据库上,扩展基本数据类型和函数集,实现森林资源时空数据的有效储存,对森林资源数据的现状及变化等基本信息进行空间拓扑、时态拓扑和时空拓扑操作,提供完善的时序分析功能,高效地回答与时间相关的各类问题,准确地描述森林资源信息,完整地反映森林资源演变过程,为森林资源数据管理提供服务,对森林资源数据库的建设提供新的思路和方法。  相似文献   

Questions pharmacokinetics for fluoxetine     

Snook SS 《Journal of the American Veterinary Medical Association》2005,227(5):706; author reply 706-706; author reply 707

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The relationship of calfhood morbidity with survival after calving in 25 New York Holstein herds     

LD Warnick  HN Erb  ME White 《Preventive veterinary medicine》1997,31(3-4):263-266

The association of owner-diagnosed calfhood diseases with the length of herd life after calving was evaluated using data collected prospectively over a ten-year period in 25 New York Holstein dairy herds. Herds selected for the study were milking between 35 and 200 Holstein cows, used dairy herd improvement records, bred cows by artificial insemination unless they needed three or more services, and had regularly-scheduled herd health visits by clinicians from the Cornell University College of Veterinary Medicine. Owners recorded occurrences of dullness, respiratory disease, and scours from birth through 90 days of age for all heifer calves that lived at least 24 h and were to be kept as replacements. Milking herd life was measured as the difference between the age at first calving and the age at death or sale. Data on cows sold when the herd went out of business or still in the herd at the end of the study were censored observations. Cox's proportional hazards model was used for statistical analysis of the data. Controlling for age at first calving, study month of birth, and sire predicted difference for milk, there was no statistically significant association of calfhood morbidity with length of herd life. The estimated hazard rate ratios for leaving the milking herd and 95% confidence intervals for dullness, respiratory disease, and scours within 90 days of birth were 1.3 (0.9, 1.9), 0.9 (0.6, 1.3), and 1.0 (0.8, 1.3), respectively. Dullness was the only disease category with an estimated hazard rate ratio greater than 1, and although it was not statistically significant, may warrant evaluation in future studies of long term effects of calfhood morbidity.  相似文献   

Development of a method for the identification, using the polymerase chain reaction, of Aspergillus fumigatus isolated from ostriches     

ME KATZ  SC J. LOVE†  HS GILL‡  BF CHEETHAM 《Australian veterinary journal》1996,74(1):50-54

Objective To develop a method for identifying DNA of Aspergillus fumigatus from ostriches, using the polymerase chain reaction (PCR). A fumigatus is the principal causative agent of avian aspergillosis.
Design A biochemical trial.
Sample population Twelve Aspergillus fumigatus isolates and three other Aspergillus species.
Procedure PCR primers that were based on the sequence of the alkaline protease gene from human isolates of A fumigatus were used.
Results We successfully tested the method on ostrich isolates from five states and showed that the test is specific for A fumigatus.
Conclusions In most cases the DNA sequence of A fumigatus isolates from ostriches is similar to that of human isolates. DNA sequences vary significantly among A fumigatus isolates, including those from affected ostriches in the same flock. The genetic variation may be used to trace aspergillus infections in ostrich flocks and determine if the disease is transmitted by contact with infected birds.  相似文献   

Antibodies to bluetongue and related orbiviruses in sheep and goats in bluetongue virus-endemic areas of northern and central Queensland     

M. FLANAGAN  ME DASHORST  MP WARD  CM MORRIS 《Australian veterinary journal》1995,72(1):31-32

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Detection of the Matrix Metalloproteinases MMP‐2 and MMP‐9 and Tissue Inhibitors of Metalloproteinases TIMP‐1 and TIMP‐2 in Llama (Lama glama) Oviduct     

R Zampini  ME Argañaraz  DC Miceli  SA Apichela 《Reproduction in domestic animals》2014,49(3):492-498

Matrix metalloproteinases (MMPs) and their inhibitors (TIMPs) are involved in several reproductive events like oocyte–spermatozoa interaction and semen liquefaction. In order to study their role in the llama oviductal reproductive process, MMP activity in oviductal fluid (OF) was assayed. Considering that llama genome sequences are partially known, a strategy to procure cDNA sequences of MMP‐2, MMP‐9, TIMP‐1 and TIMP‐2 was designed. Afterwards, their expression patterns in the different llama oviductal segments were assayed. Gelatine zymograms detected 62 and 94 kDa protease activities that matched MMP‐2 and pro‐MMP‐9, respectively. Expression pattern analysis showed that MMP and TIMP mRNAs were present in ampulla, isthmus, utero‐tubal junction (UTJ) and papilla. Altogether, these findings support the argument that MMPs/TIMPs are produced in the oviduct and secreted into the oviductal lumen. Our results encourage further studies to elucidate the role of these proteins in reproductive oviductal events.  相似文献   

Skin diseases in pet rabbits: a retrospective study of 334 cases seen at the University of California at Davis,USA (1984–2004)     

Tara S. Snook  Stephen D. White  Michelle G. Hawkins  Lisa A. Tell  Laura S. Wilson  Catherine A. Outerbridge  Peter J. Ihrke 《Veterinary dermatology》2013,24(6):613-e148

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