Resumen

GUDINO ESCANDON, R.S. et al. Impact of biomass bank technology with Cuba CT-115 grass on a dairy farm from the topical area of the center of Veracruz, Mexico. Cuban J. Agric. Sci. [online]. 2020, vol.54, n.3, pp. 299-308.  Epub 01-Sep-2020. ISSN 2079-3480.

To evaluate the impact of biomass bank technology with Cenchrus purpureus cv. Cuba CT-115 in dual-purpose livestock, data was collected from 14 indicators during six years. For three years, the area had normal management and biomass banks for the other three. Trimester-year combination allowed to create a data matrix with a total of 24 rows. The Statistical Model for Impact Measurement was used to interpret the results. Three principal components (PC) were selected, which explained 83.87% of the variability. PC1 explained 56%, PC2 16.47% and PC 3 11.3%. The three new variables were renamed as production, supplements and productivity, respectively, according to the variables that had a preponderance superior to 0.65 in each component. With these variables, impact indexes of each scenario were estimated. Production component changed its impact values, from negative to positive, in the three years with biomass banks, which showed the advantage of technology introduction. Through linear correlations, it was estimated that, in each trimester, the total number of cows increased by 1.84 ± 0.14; milk production at 298.37 ± 45.87 kg, weaned live weight at 44.81 ± 9.59 kg and stocking rate at 0.057 ± 0.07 LAU/ha. Biomass bank technology allowed to important indicators for dual-purpose livestock.

Palabras clave : dual purpose; Statistical Model for Impact Measurement; feeding during dry period; Cenchrus purpureus; Pennisetum purpureum Schumach.

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