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In this work, the nitrogen conversion factor in eggs Coturnix coturnix L. (Japanese quail), was determined. 850 eggs of Coturnix coturnix L. were analyzed, the maximum precipitation and extraction pH was determined by the Kjeldahl method, at different acidic and basic pH. The protein conversion factors found for white and yolk were 6.33 and 6.30 respectively. These results justify its consumption compared to other food sources, high in protein in the human diet. [ABSTRACT FROM AUTHOR]

This work is oriented to elaborate pasta enriched with micro-encapsulated anchovy protein (Engraulis ringens), with the idea of innovate nutritiously with an already existing product, evaluating the acceptability of consumers at three different protein concentrations (5%, 10% and 15%), using quality parameters of a product in terms of taste, color, aroma and texture, and under a hedonic scale. The Kjeldahl (1883) method was used for the determination of proteins and the Duncan (1951) test for the sensory analysis. The final goal is to determine how the preferences of the consumers vary when adding this type of "extra nutritional contributions" in the pastas. In the sensory analysis, a panel of 24 people participated, concluding that the trial with 5% of anchovy protein added was the best evaluated or the one with greater acceptance: its attributes were the closest to the elaboration of an ideal paste and its rejection was lower compared to the other two trials. [ABSTRACT FROM AUTHOR]

The application of organic materials as fertilizers is a common practice in clean production and organic systems, however, there is not enough technical criteria to measure the right dose. In this sense, overdoses or underdosing may occurs affecting the profitability of the production system. For this reason, it was used seven organic materials, commonly used in the Sabana de Bogotá, three derived from crop residues (Sagaro Compost, Compost CIAA (ICCA), soil-aid®) and four derived from animal waste (chicken, pork, rabbit and ground lombris derived humus). It was determined its potentially mineralizable nitrogen and the rate of nitrogen mineralization using the incubation method. The experimental design was completely randomized with eight treatments (seven organic materials and a control), and three repetitions for a total of 24 experimental units. The measurement was performed at weekly intervals from week one to week nine, after incubation. Waste materials derived from animals were generally better than those from plant residues in the N mineralization process, as is the case of rabbit-derived humus that release 5.197 mg·kg-1 of mineral nitrogen, a value that represents 20% of initial total Nitrogen. The degree of adjustment of logarithmic model was more than 80% (R2> 0.80) in 86% of the evaluated materials. [ABSTRACT FROM AUTHOR]