Resumen: El estrés salino origina una reducción signif icativa en las producciones agrícolas a nivel mundial, por lo que es una prioridad el desarrollo de investigaciones que contribuyan a mitigar sus efectos negativos de manera eco-amigable. Por ello, el objetivo de este trabajo fue evaluar el efecto de dinamizaciones homeopáticas de Natrum muriaticum (NaM) en el índice de tolerancia relativa al estrés salino (ITR) y la ganancia de biomasa vegetal, como tasa de crecimiento (TC) en etapa de desarrollo vegetativo inicial de plantas de frijol común Phaseolus vulgaris L. variedad Quivicán (FC-Q) y frijol Yorimón Vigna unguiculata L., Walp variedad Paceño (FY-P). El experimento se desarrolló en condiciones semi-controladas, con un diseño completamente al azar de arreglo factorial de 2A × 2B × 4C [(A: dos especies-variedad de frijol (Común-Quivicán; Yorimón-Paceño), B: dos niveles de NaCl (0;75mM), C: tres tratamientos homeopáticos (NaM-7CH; NaM-13CH; NaM-7CH+13CH) y agua destilada como tratamiento control (AD)], con cinco réplicas por tratamiento. Se observó una mayor TC en el frijol Común-Q; todos los tratamientos homeopáticos aplicados incrementaron TC con respecto al tratamiento control AD, siendo mayor la respuesta con NaM-7CH. El ITR se incrementó en ambas especies cuando recibieron NaM, siendo mayor en FC-Quivicán, superando al FY-P en biomasa seca de hojas (18%), de tallos (14%) y de raíces (12%). Este estudio demostró que la homeopatía agrícola es una alternativa viable, eco-amigable y de bajo costo, para incrementar la producción de frijol común-Quivican (P. vulgaris L.) y frijol Yorimón-Paceño (V. unguiculata L.) en áreas salinizadas por NaCl.

Summary: Saline stress causes a signif icant reduction in agricultural production worldwide, which is why it is a priority to develop research that contributes to mitigating its negative ef fects in an eco-friendly way. Therefore, the objective of this work was to evaluate the ef fect of homeopathic dynamizations of Natrum muriaticum (NaM) on the tolerance index relative to saline stress (ITR) and the gain of plant biomass as growth rate (TC) in the development stage. Initial vegetative stage of common bean plants Phaseolus vulgaris L. variety Quivicán (FC-Q) and bean Yorimón Vigna unguiculata L., Walp variety Paceño (FY-P). The experiment was developed under semi-controlled conditions, with a completely randomized design of factorial arrangement of 2A × 2B × 4C [(A: two bean species-variety (Común-Quivicán; Yorimón-Paceño), B: two levels of NaCl (0; 75mM), C: three homeopathic treatments (NaM-7CH; NaM-13CH; NaM-7CH + 13CH) and distilled water as control treatment (AD)], with f ive replications per treatment. A higher TC was observed in Common-Q beans; All homeopathic treatments applied increased TC with respect to the control AD treatment, the response being greater with NaM-7CH. The ITR increased in both species when they received NaM, being higher in FC-Quivicán, surpassing the FY-P in dry biomass of leaves (18%), stems (14%) and roots (12%). This study demonstrated that agricultural homeopathy is a viable, eco-friendly and low-cost alternative to increase the production of common beans-Quivican (P. vulgaris L.) and Yorimón-Paceño beans (V. unguiculata L.) in areas salinized by NaCl.

The objective of the study was to evaluate the effects of a heat-resistant bacterial phytase added to pelleted diets on mineral digestibility, live performance, carcass traits, and bone quality of broilers. Three treatments were evaluated: Positive control; negative control, with 0.10 points reduction in calcium level and 0.15 points reduction in available phosphorus level; and negative control + phytase at 500 FTU/kg. Mineral digestibility and bone quality results demonstrated that the evaluated phytase resisted pelleting as it increased the utilization of the minerals present in the diet.

The ecology of the active forager lizard Cnemidophorus ocellifer (Spix, 1825) was studied to analyze food habits, thermal ecology and habitat use, in the Morro do Chapéu municipality (11º29'S, 41º07'W), state of Bahia, Brazil. Lizards (N = 34) were collected with rubber bands or with an air rifle and, for each individual, we recorded cloacal temperature (Tc), air temperature (Ta) (1 cm above the substrate) and substrate temperature (Ts) (to nearest 0.2ºC). We registered the microhabitat used by each animal at the moment of first sight and measured its morphological variables (nearest 0.1 mm). In the laboratory, we registered the number of items of each prey category to the taxonomic level of Order, its dimensions and frequencies. Data showed that, numerically, the category most consumed was Isoptera (84.4%). Volumetrically, the diet was composed predominantly by Orthoptera (27.5%) and Isoptera (21.5%). Prey items that occur aggregated in the environment (termites) were important in the diet of C. ocellifer, a characteristic of active foragers. Males and females did not differ in the types of prey consumed. Cnemidophorus ocellifer had a mean Tc in activity of 37.6 ± 1.6ºC and the relationship between Tc and ambient temperatures (Ts and Ta) was positive and significant (F2,28 = 4.814; R² = 0.256; p < 0.05). Most lizards were first sighted on leaf litter inside shrubs (45.5%) and on leaf litter at shrub edge (42.4%). Cnemidophorus ocellifer had a relatively high mean Tc during activity, with Ts explaining most of the variation in lizard Tc.