The objective of this study was to evaluate the effects of 2 Mexican oregano essential oils (MOO), from Poliomintha longiflora Gray ( PLG ) and Lippia berlandieri Schauer ( LBS ), in drinking water ( DWt ) on the performance, slaughter variables, and meat quality of broilers over a 40 D period of growth. A total of 180 non-sexed Ross-308 broilers (1-day-old) were randomly assigned to 3 treatments with 6 replications each (10 birds per replicate): CON = DWt control (without MOO); PLG = DWt + 400 mg/L of PLG; and LBS = DWt + 400 mg/L of LBS. The CON, PLG, and LBS broilers body weights were similar ( P > 0.05) at all times. Feed intake ( FI ) was different by treatment ( P < 0.05) at 7 and 28 D, and water intake ( WI ) was different ( P < 0.05) at day 28. The CON treatment was highest ( P < 0.05) at 28 D for FI and WI, whereas LBS was lowest ( P < 0.05). Weight gain ( WG ) for CON, PLG, and LBS broilers was similar ( P > 0.05), although WG for CON was slightly higher. In CON broilers, slaughter weight was highest ( P < 0.05), but thigh yield was lowest ( P < 0.05). The CON and PLG treatments were lower ( P < 0.05) in thigh and leg cooking losses. The PLG treatment presented the highest values ( P < 0.05) for breast-meat redness, saturation index, shear force, odor, taste, and overall sensory acceptability. The LBS was higher ( P < 0.05) for breast-meat shear force, cohesiveness and resilience, but lower ( P < 0.05) for sensory attributes. Mexican oregano essential oils at 400 mg/L can serve as natural alternative additives in DWt to improve broiler production and meat quality.
El objetivo de este estudio fue evaluar el efecto de inulina de agave (IA) y aceite esencial de orégano Mexicano (AEOM) en el comportamiento productivo, variables de sacrificio y calidad de la carne en pollos de engorda. Seis tratamientos fueron establecidos en dietas: T1 = dieta control, T2 = dieta + 5.0 g kg-1 IA, T3 = dieta + 10.0 g kg-1 IA, T4 = dieta + 5.0 g kg-1 IA + 0.2 g kg-1 AEOM, T5 = dieta + 10.0 g kg-1 IA + 0.2 g kg-1 AEOM, y T6 = dieta + 0.2 g kg-1 AEOM. Los tratamientos T4 y T6 incrementaron el peso pollos (P < 0.05), pero en consumo de alimento T4 fue el más alto y T6 el más bajo en todo el periodo de engorda. Así mismo, estos tratamientos incrementaron el peso sacrificio (P < 0.05), sin embargo T1 aumentó el rendimiento alas. T3 presentó la capacidad en retención de agua, dureza y gomosidad más alta (P < 0.05), mientras que T5 aumentó (P < 0.05) color amarillo, saturación y tono de la carne. La inulina de agave (10.0 g kg-1) y el aceite esencial de orégano (0.2 g kg-1) pueden usarse en la engorda de pollos para mejorar la producción y calidad de la carne.
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