The endogenous production of unsaturated fatty acids (FA), particularly some monounsaturated FA (%MONO) and nearly all conjugated linoleic acids, is regulated by the 9-desaturase activity. The aims of this study were to assess the variation of this enzymatic activity within lactation, across dairy breeds, and to estimate its genetic parameters. The ratios of C14:1 cis-9 to C14:0, C16:1 cis-9 to...

At 24 hours after administration of a single dose of 3-4 mg. of l-hydroxy-2-acetylaminofluorene-1-C14 (1-hydroxy-AAF-l-C14) intraperitoneally to rats, 75 per cent of the dose had been excreted in the urine and feces. About 5 per cent of the injected radioactivity was present in the gastrointestinal contents, and only 1-2 per cent re mained in the tissues of the rat. Radioactivity equivalent to ...

Queen pheromones are chemical signals produced by reproductive individuals in social insect colonies. In many species they are key to the maintenance of reproductive division of labor, with workers beginning to reproduce individually once the queen pheromone disappears. Recently, a queen pheromone that negatively affects worker fecundity was discovered in the bumblebee Bombus terrestris, presen...

in this study,oil was extracted from the liver and visceral fat of patin (pangasianodon hypophthalmus) and refined. the yield of oil after refining was 49.98%. the major yield loss (34.20%) happened during the degumming procedure. fatty acids found in the crude and refined oil were c12:0, c14:0, c14:1, c16:0, c16:1, c18:0, c18:1, c18:2, c18:3, c18:4, c20:0, c20:1, c20:4, c20:5, and c22:6. the d...

At 24 hours after administration of a single dose of 3-4 mg. of l-hydroxy-2-acetylaminofluorene-1-C14 (1-hydroxy-AAF-l-C14) intraperitoneally to rats, 75 per cent of the dose had been excreted in the urine and feces. About 5 per cent of the injected radioactivity was present in the gastrointestinal contents, and only 1-2 per cent re mained in the tissues of the rat. Radioactivity equivalent to ...

Strategic interaction parameters characterize the impact of actions of one economic agent on the payoff of another economic agent. In this paper we study how the information available to economic agents regarding other economic agents can influence the ability of an econometrician to recover strategic information parameters from the observed actions. We consider two extreme cases: the complete ...

Discrete response models are of high interest in economics and econometrics as they encompass treatment effects, social interaction and peer effect models, and discrete games. We study the impact of the structure of information sets of economic agents on the Fisher information of (strategic) interaction parameters in such models. While in complete information models the information sets of part...