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1551 - 1575 of 1876
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A study was conducted in 1994-96 with the aim of assessing the serological prevalence of Border Disease (BD) among sheep and goats in Denmark and to investigate possible relations to herd factors. From each of 1000 herds, 2 blood samples were obtained from animals older than 1 year. The examination ...
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A prospective cohort study was undertaken to determine calf-level factors that affect performance (growth) between birth and 14 months of age in a convenience sample of approximately 3300 female Holstein calves born in 1991 on two large Florida dairy farms. Data collected on each calf at birth inclu...
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Peritoneal fluid from 10 healthy young male Holstein calves was analyzed three times (2 to 3 days, 12 to 15 days and 27 to 30 days) during the first month of life. A new technique for collection of peritoneal fluid from calves positioned in left lateral recumbency was developed. The technique was fo...
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Fish meals (herring, menhaden, and anchovy), commercially available in Atlantic Canada and a Norwegian fish meal (Norse-LT94Reg.) formulated to contain 0, 16, 28 or 40% protein were evaluated for protein quality by in vitro assays and by growth studies with Atlantic salmon fingerlings. Pepsin digest...
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Provides a review of the literature related to the application of domain-specific thesauri in the search and retrieval process. Focusing on studies that adopt a user-centered approach, surveys the methodologies and results from empirical studies undertaken in the use of thesauri as sources of term s...
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A 6-month trial was carried out on the comparative effects of lactation therapy (systemic and intramammary), early drying off followed by dry-cow therapy, and culling based on milk somatic cell count (SCC), on mastitis incidence in a 124-cow herd. In the 6 months prior to the trial, between 14.6 and...
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The N degradability and N digestibility of raw, roasted or extruded oilseeds were studied using an in vitro enzyme method. The N degradability and N digestibility of canola, linseed and soybean were calculated based on the proportional difference in N remaining after incubation and the initial N con...
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A database of sea lice counts from 33 sea water farms in Scotland, UK from the Firth of Cyde to Loch We, Sky and the Western Isles, was compiled. Data were assimilated for a 5-year period (1996-2000), involving counts on 70 824 fish (salmon). The pattern of abundance is reported for Lepeophtheirus s...
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Sera (n = 806) from 50 populations of bighorn sheep (O. canadensis) in California, USA, were evaluated for antibodies to Psoroptes sp. mites using a kinetic ELISA. Test values for each sample were determined to be either positive or negative at each of 2 ELISA cutoff values that provided either 100%...
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This paper examines two large national data sets collected over several years and contrasts the patterns of sea lice, Lepeophtheirus salmonis (Kroyer, 1837), infections, the use of treatments and the occurrence of chalimus peaks between Norwegian and Scottish farms. Infection levels in Scotland ...
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Cattle herds (N=26,639) were classified as having persistently infected (PI) animals (PI-herds) or not (non-PI-herds) with 4,519 PI-herds (17.0%). Regional differences in occurrence of BVDV infections were identified. The K-function indicated clustering at 250 m and 1 km. The semivariogram indicated...
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A letter to the editor is presented discussing polychaete composition in blue mussel fouling communities in relation to mussel stocking density and seasonality of mussel deployment and sampling.
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The present study describes a new semen diluent (diluent C) which prolongs the sustained motility of ocean pout sperm, a distinguishing feature of the sperm of internally fertilizing teleosts. Sperm motilities were compared in the new diluent (C), based on the ionic composition of ocean pout seminal...