Objective: To determine the effect of the addition of Leucaena leucocephala andGuazima ulmifolia foliage on the production parameters and carcass yield of NewZealand rabbits.Desing/methodology/approach: 30 rabbits (15 females and 15 males) of the NewZealand breed were used, distributed in three treatments (five females and five males),which consisted in feeding 200 g of concentrated food per day + 100 g of fresh L.leucocephala or G. ulmifolia foliage, and a control group with no supplementation.Results: The total voluntary intake was not affected by the treatments or gender of therabbits; an average value of 158.9 g day -1 was recorded. Weight gain was 27.2 g day -1on average. The average slaughter weight of the rabbits was 2523 g. The carcassweight was 1,297 g and the average carcass yield was 51.6%. The dissectable fat 2content was lower in rabbits on supplements (F = 6.70, P = 0.001) with values of 1.6, 1.8and 2.11% with fresh foliage of G. ulmifolia, L. leucocephala and withoutsupplementation, this variable was not affected by gender. The viscera proportion wason average 24.3%. The average meat: bone ratio was 5.6.Limitations on study/implications: It was not possible to carry out bromatologicalanalyzes of the foliages or their digestibility.Fingings/conclusions: Supplementation of rabbits with foliage of G. ulmifolia and L.leucocephala decreases the proportion of dissectable fat and did not affect theproduction parameters and carcass yield.

Couepia polyandra (Kunth) Rose belongs to the family Chrysobalanaceae, its distribution is Neotropical and is the only species of this genus of trees that lives in Mexico. It grows wild in the states of the Pacific slope and cultivated in the Gulf to the Yucatan Peninsula. In the state of Campeche, it is known

Objetivo: Caracterizar la variedad Rosita de chile habanero (Capsicum chinense Jacq.) como una variante de uso común del habanero tradicional con fines de conservación y mejoramiento genético. Diseño/metodología/aproximación: Fueron recolectados frutos de diez unidades de producción, reproduciéndolas para su caracterización ex situ en condiciones de invernadero y fertirriego con base a la guía del IPGRI (1995), caracterizando la plántula en vivero y la planta al trasplante: hojas, tallo, flor, fruto y semilla. La fertilización de realizó aplicando cada tercer día un gramo de fertilizante triple 19 (N-P-K) disuelto en agua, a partir de la aparición de las primeras hojas verdaderas, después del trasplante se aplicó mediante fertirriego la fórmula 100-100-100 (N-P-K). Con los datos obtenidos y el uso de estadística descriptiva se obtuvieron promedios y desviación estándar para las características cuantitativas. Las características cualitativas dieron valor a una determinada característica a partir de su mayor frecuencia absoluta. Resultados: Las características distintivas fueron: hipocotilo con antocianinas y pubescencia; planta con ciclo semi-perenne; hábito de crecimiento postrado; antocianinas en los nudos; altura mayor de 85 cm; color de la corola amarillo verdosa; dos o más flores por axila fruto acampanulado; arrugamiento trasversal del fruto y semilla rugosa de tamaño medio. Limitaciones del estudio/implicaciones: La presencia de algunas organismos plaga fueron combatidos con CalypsoÒ (Thiacloprid), ActaraÒ (Tiametoxam), EvisectÒ (Tiocyclam hidrogenoxalato), y AplaudÒ (Buprofezin). Hallazgos/conclusiones: Las características morfológicas distintivas del chile habanero Rosita se encontraron en plántula, planta flor, fruto y semilla, que lo diferencian del chile habanero tradicional.

Bañuelos, C. (2019). Germination responses of Moringa oleifera seeds treated with two scarification methods. Revista Bio Ciencias 6, e407.

Objective: To determine the apparent digestibility (AD) of diets with hydroponic green corn forage (HGCF) and to evaluate its effect on the dry matter (DM) intake and daily weight gain (DWG) of lambs. Design/methodology/approach: Two experiments using four levels of inclusion (0, 20, 40, 60% DM) of HGCF in the diet were carried out. For determine the AD of diet 16 sheep were used and for the growth evaluation 20 male lambs. A completely randomized design in both studies was used. Results: A higher AD of DM and crude protein in diets with 40% and 60% of HGCF was observed (P<0.05; P<0.01). Lambs from 0 and 20% HGCF treatment had a higher DWG. A lower DM intake in 60% HGCF diet was registered (P<0.05). Limitations on study/implications: Currently there are various methods to supplement sheep during dry season, however, few are fully adapted to the needs of farmers. Hydroponic green corn forage is a valuable alternative for fast and constant production of forage with high nutritional value for sheep. Findings/conclusions: Hydroponic green corn forage has high digestibility, therefore, it can be used as an excellent source of forage in the diet of lambs, obtaining appropriate weight gains with rations that include up to 40% in the diet to replace commercial food.