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26 - 50 of 1891
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Lower fertility of preserved stallion semen may be caused by damage to the spermatozoa or premature capacitation during storage. We investigated the use of the flavonoid, quercetin, with a standard skim milk extender for storage of stallion spermatozoa to prevent premature capacitation and acrosome ...
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One side of each of 20 lamb carcasses was dissected into muscle, bone and fat. The other side of each lamb was cross-sectioned at 11 sites. Photographs of cross-sections were scanned with an image analyser to measure the amount of muscle, bone and fat at each site. Estimations of the composition of ...
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Gastric cancers are a significant cause of morbidity worldwide. Epidemiological studies and animal models show that males have higher incidences of gastric cancers compared with females, suggesting that sex hormones may modulate gastric cancer risk. An animal model of the initiation phase of gastric...
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During this century livestock production has increased massively through the improved ability to diagnose, treat, control and prevent certain diseases. Despite these advances, disease remains a major constraint to livestock production and welfare throughout the world. In many instances, this is a re...
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A retrospective cross-sectional survey of dog-owning veterinary clients was undertaken in 1996 in three Canadian provinces (New Brunswick, Nova Scotia, and Prince Edward Island) to generate a population of dogs for future use in a more detailed survey on canine behaviour. The questionnaire was desig...
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All current approaches to manipulating the reproductive biology of the nonpregnant mare are discussed.
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The effect of an intravenous infusion of gonadotrophin releasing hormone (GnRH) on the duration of postpartum anestrus in suckled beef cows was studied. Twenty-eight, mature, suckled beef cows were assigned in equal numbers to one of four treatment groups which were based on infusion with saline or ...
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Five serological assays: the buffered plate antigen test, the standard tube agglutination test, the complement fixation test, the hemolysis-in-gel test and the indirect enzyme immunoassay were diagnostically evaluated. Test data consisted of results from 1208 cattle in brucellosis-free herds, 1578 c...
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Four hundred eighty mature marine mussels (Mytilus edulis) were collected in late April from a mussel lease in an estuary in Prince Edward Island, Canada. Squash preparations made of reproductive gland (mantle) tissue of each mussel were stained with Wright-Giemsa stain and were examined by one inve...
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A trial in which roasted ground lupin, raw ground lupin or soyabean meal were fed to cows to establish possible effects on the fatty acid composition of milk (24 cows) and meat (28 cows) is reported. Results indicated that, in lupin-fed cows, even with a relatively low level of dietary fat, synthesi...
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The purpose of this study was to document the effect of calfhood vaccination for Mycobacterium paratuberculosis on a serologic ELISA. Fifteen calves vaccinated with a killed paratuberculosis vaccine and 5 unvaccinated control calves were tested from the first through the fifteenth month of life. Age...
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Strawberry disease (SD) in the USA is a skin disorder of unknown aetiology that occurs in rainbow trout Oncorhynchus mykiss and is characterized by bright red inflammatory lesions. To identify a candidate bacterial agent responsible for SD, we constructed 16S rDNA libraries from 7 SD lesion samples ...
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Approaches to search interface design in information retrieval are discussed emphasising the importance of user choice in search navigation.
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La aplicacion indiscriminada de fertilizantes con NPK, ademas de la aplicacion de enmiendas calcareas, en la mayoria de los suelos del Estado Monagas y Anzoategui ha causado grandes deficiencias de micronutrimentos. Esta investigacion se realizo en una siembra comercial de maiz. Es decir todas las ...
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OBJECTIVE: To determine the value of a commercially available test for measurement of luteinizing hormone (LH) concentrations for its use in distinguishing between ovariectomized and sexually intact bitches. DESIGN: Prospective longitudinal cohort study. ANIMALS: 101 sexually intact bitches and 199 ...
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Serum samples were collected from 10 healthy geldings every 4 h for three consecutive days and the triiodothyronine (T3) and thyroxine (T4) concentrations determined by radioimmunoassay. There were significant differences in the hormone concentrations related to time. The mean (+/- sd) T3 concentrat...
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Factors which influence somatic cell counts in bovine milk are reviewed and guidelines for their interpretation are presented. It is suggested that the thresholds of 300 000 and 250 000 cells/ml be used to identify infected quarters and cows respectively. However, it is stressed that somatic cell co...
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The effects of dietary lipid from 4 experimental diets on the fatty acid composition and cholesterol content of spermatozoa and their plasma membranes and their consequences for sperm viability after cryopreservation were evaluated in rainbow trout. The 4 sources of lipid were herring oil (adequate ...
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This report was commissioned by the Salmon Aquaculture Dialogue. The Salmon Dialogue is a multi ‐ stakeholder, multi ‐ national group which was initiated by the World Wildlife Fund in 2004. Participants include salmon producers and ...