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    Lipid supplementation of dairy cows' diet: effect on milk fat composition.

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    The influence of supplementation of diets with some lipid sources (i.e., whole cottonseeds, flaked whole soybean seeds, and calcium soaps) on the composition of milk fat from dairy cows, bred in 50 farms of the Brescia province, was evaluated; 117 bulk milk samples were collected, and the lipid fraction was analyzed. Considerable variations in the composition of both fatty acids and triglycerides were detected, and these variations showed a good correlation with the amount of crude lipids in diets. The application of ratios between fatty acids as an index for butterfat purity is ineffective due to the modifications of the fatty acid composition

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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