Performance of artificially reared Finnsheep-cross lambs   总被引：1，自引：0，他引：1  

I L Lindahl  G M Sidwell  C E Terrill 《Journal of animal science》1972,34(6):935-939

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Evaluation of a Radioimmunoassay Technique Measuring Calcitonin in The Bovine,Ovine and Porcine Species     

Kristina Forslund  Mats Stridsberg 《Acta veterinaria Scandinavica》1980,21(2):155

A heterologous RIA system was set up for measuring bovine, ovine and porcine calcitonin (CT). The system consisted of porcine GT used as standard and for the preparation of an iodinated tracer. The antiserum used was raised against ovine GT. For each analysis was used 25–200 µl blood plasma. Practical detection limit was 0.25 µg of CT per litre of blood plasma.The parallelism between the dose response curves for the p-GT standard and for the assay of increasing amounts of bovine, ovine and porcine blood plasma showed the suitability of the present assay system to study the GT secretion in these species. Furthermore, the reliability of the method was verified by a clearly recognized CT response to calcium infusion.  相似文献   

Pregnancy diagnosis in the ewe by intrarectal Doppler   总被引：1，自引：0，他引：1  

I L Lindahl 《Journal of animal science》1971,32(5):922-925

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Treatment of pregnant ewes with cyclophosphamide     

E H Dolnick  I L Lindahl  C E Terrill 《Journal of animal science》1970,31(5):944-946

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Enzootics of Leptospira abortions in Danish sow herds practising loose housing on deep straw bedding     

Friis NF  Jorsal SE  Sørensen V  Schirmer AL  Lindahl J  Thorup F 《Acta veterinaria Scandinavica》2000,41(4):387-390

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Spatial and Temporal Patterns of Chloride Deposition in Southern Sweden     

Gustafsson  Mats E. R.  Hallgren Larsson  Eva 《Water, air, and soil pollution》2000,124(3-4):345-369

Monthly bulk deposition of chloride at 49 stations in Southern Sweden between 1989 and 1995 was used to produce quarterly and annual deposition maps through ordinary block kriging. Generally, deposition decreases from the west coast and eastward and displays a large annual variation, governed by the frequency and intensity of midlatitude cyclones. The 1st quarter dominates the temporal pattern all years except 1992. The 4th quarter is the second most important and the 2nd and 3rd quarters have generallylow deposition. The spatial deposition maximum was often displaced from the west coast to the western fringe of the South Swedish highland, due to orographic enhancement of precipitation. On the western rise of the highland, deposition almost entirely co-variates with precipitation. On the west coast and in the eastern part of Southern Sweden, thetemporal pattern is a more complex result of precipitation and frequency of strong westerlies. Comparing the quarterly total dataset with precipitation and frequency of westerly gales shows that both the 3rd and 4th quarters have higher mean precipitation than the 1st quarter, but lower deposition, while the second quarter has substantially lower precipitation but almost equal deposition to the 3rd quarter. The frequency of westerly gales shows a clearer, linear relationship to quarterly deposition. The 1st quarter has the highest variability in deposition and precipitation as well as in frequency of westerly gales. The importance of single highlysalt laden cyclones to the annual deposition is obvious in the 1st quarter of 1993. Changes in cyclone activity due to climate change is therefore of vital importance for the chemical characteristics of the midlatitude atmosphere.  相似文献   

Implications of differences in macromolecular composition of stem fractions for processing of Scots pine     

Sara Johansson  Karin Carlqvist  Rashmi Kataria  Thomas Ulvcrona  Urban Bergsten  Mehrdad Arshadi  Mats Galbe  Gunnar Lidén 《Wood Science and Technology》2015,49(5):1037-1054

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Husbandry Factors and the Resumption of Luteal Activity in Open and Zero‐Grazed Dairy Cows in Urban and Peri‐Urban Kampala,Uganda     

BM Kanyima  R Båge  DO Owiny  T Ntallaris  J Lindahl  U Magnusson  MG Nassuna‐Musoke 《Reproduction in domestic animals》2014,49(4):673-678

The study investigated the influence of selected husbandry factors on interval to resumption of post‐partum cyclicity among dairy cows in urban and peri‐urban Kampala. A prospective study of 85 day post‐partum period of 59 dairy cows in open (n = 38) and zero grazing (n = 21) systems was conducted on 24 farms. Cows of parity 1–6 were recruited starting 15–30 days post‐partum. Progesterone (P4) content in milk taken at 10–12 day intervals was analysed using ELISA. The cow P4 profiles were classified into ‘normal’ (< 56 days), ‘delayed’ (> 56 days), ‘ceased’ or ‘prolonged’ (if started < 56 days but with abnormal P4 displays) resumption of luteal activity and tested for association with husbandry and cow factors. Of the 59 cows, luteal activity in 81.4% resumed normally and in 18.6%, delayed. Only 23.7% maintained regular luteal activity, while the others had ceased (10.2%), prolonged (37.3%) or unclear luteal activity (20.3%). There were no differences between open and zero‐grazed cows. Milk production was higher (p < 0.05) in zero than open grazing, in urban than peri‐urban and in cows fed on brew waste (p < 0.001) compared with mill products and banana peels. Results suggest that luteal activity resumes normally in a majority of cows, although only a minority experienced continued normal cyclicity once ovulation had occurred, in the two farming systems irrespective of feed supplements or water, and that supplementing with brew waste is beneficial for milk production.  相似文献   

Mating-induced endometritis: Physiology or pathology?     

Mats H.T. Troedsson 《Veterinary journal (London, England : 1997)》2014,199(1):9-10

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Factors associated with Echinococcus multilocularis infection in coyotes in southern Ontario     

Jonathon D. Kotwa  David L. Pearl  Mats Isaksson  Claire M. Jardine  Olaf Berke  Nicola J. Mercer  Eva Osterman‐Lind  Andrew S. Peregrine 《Zoonoses and public health》2020,67(5):546-553

Echinococcus multilocularis was recently reported in wild canids across southern Ontario, a newly recognized endemic area in Canada. In such areas, a comprehensive understanding of factors associated with infection in definitive hosts (wild canids) is critical for mitigating risk of transmission to humans. However, little is known about the transmission dynamics of the parasite in definitive hosts for this region. A study was therefore carried out to investigate the association of host‐level (sex, body condition), environmental (southern Ontario region, land cover), temporal (season, hunting season, calendar year) and extraneous factors (submitter type) with E. multilocularis infection in coyotes in southern Ontario. Between November 2015 and March 2017, 416 coyotes were collected from across the region as part of a study that investigated the prevalence and distribution of the parasite in wild canids; approximately 24% of coyotes were positive for E. multilocularis. Associations between infection and factors of interest were assessed via a mixed‐effects logistic regression model with a random intercept for submitter to account for clustering. Coyotes with poor body condition were at greater odds of E. multilocularis infection than those in good condition (odds ratio [OR] 2.14; 95% CI: 1.08–4.26; p = .030). A negative association was observed between infection in coyotes and the proportion of natural land in a coyote's estimated home range (OR: 0.67; 95% CI: 0.52–0.85; p = .001). Coyotes from the western region of southern Ontario had lower odds of infection compared to coyotes from the central region (OR: 0.26; 95% CI: 0.12–0.55; p < .001). These results can be used to help guide future public health prevention strategies for human alveolar echinococcosis.  相似文献