The effect of two housing systems on productive performance of hair-type crossbreed lambs in sub-humid tropics of Mexico

Abstract

The effect of two housing systems during the fattening period on productive performance of lambs from different hair-type sheep breeds in southeastern Mexico was evaluated. Effects of housing system (raisedslatted floor cages (RFC) vs. floor pens (FP)), year (2009, 2012 and 2013) and season of the year (rainy vs. dry) on average daily gain (ADG), weights adjusted to 60 (P60) and 90 (P90) days post-weaning were evaluated. Data from 1213 lambs collected on the farm over a period of three years were analysed. The ADG, P60 and P90 were affected (P < .01) by the housing system, year and the housing system × year interaction. The season was not a significant source of variation. Lambs housed in RFC were heavier (ADG 306.5 ± 2.69 g, P60 33.2 ± 0.16 kg, P90 42.4 ± 0.24 kg) than those in FP (ADG 269.4 ± 4.24 g, P60 30.9 ± 0.25 kg, P90 39.0 ± 0.38 kg) (P < .01); however, the significant interaction housing system × year suggests that productive performance of lambs may vary between years, despite the housing system. It was concluded that productive performance of hair lamb was affected by housing systems, year and their interaction.ARTICLE HISTORY

Effects of polyphenolic extract from Eucommia ulmoides Oliver leaf on growth performance, digestibility, rumen fermentation and antioxidant status of fattening lambs

“…In many parts of the world, lamb fattening has gradually moved from an extensive system based on grazing to an intensive system based on concentrate feeding to improve production efficiency (Muñoz‐Osorio, Aguilar‐Caballero, Sarmiento‐Franco, Wurzinger, & Gutiérrez‐Reynoso, ). During the intensive lamb fattening process, some factors such as weaning, high metabolic rates and transportation can induce oxidative stress, which may result in poor growth performance and increased susceptibility to disease (Celi, ).…”

Analysis of Factors Affecting the Rearing of Early-Weaned Lambs of Dairy Breeds for the Meat Market

“…The ADG value was affected by the initial weight of the lamb, but in this study there were no significant differences between the straw bedding + IR lamp and the slat + IR lamp systems. In a study conducted by Muñoz-Osorio, et al [18], a higher ADG was obtained with slatted floor (compared to concrete screed), attributing these results to the lower contact of animals with possible pathogens and bacteria in this type of floor. The results presented herein cannot be directly extrapolated, since that study did not include the straw bedding method and the slat system used had limitations, as explained above.…”

“…Teixeira, et al [17] tested other materials such as sawdust or rice husk, finding no significant differences in the performance of lambs. Muñoz-Osorio, et al [18] compared a system based on plastic or metal slats vs. a concrete floor for intensive male lamb fattening, registering higher productive yields when the slat was used, although with a strong dependence on other factors (food, weather conditions, etc. ).…”

Mejoras zootécnicas orientadas a la rentabilización de la utilización de corderos de razas lecheras en el mercado cárnico

“…Por lo tanto, no hay tal efecto confundente del peso de partida, y se puede afirmar que la paja + lámpara IR es el sistema más ventajoso. En un estudio realizado por Muñoz-Osorio, et al [19], se obtuvo una GMD mayor en suelo de slat (comparado con suelo de hormigón), atribuyendo estos resultados al menor contacto de los animales con posibles patógenos y bacterias en este tipo de suelo. Nuestro resultado no es directamente extrapolable, puesto que en estos estudios no se incluía el suelo de paja y el slat tiene unas limitaciones, ya explicadas anteriormente.…”

“…Teixeira, et al [18] utilizaron otros materiales como serrín o cáscara de arroz en el suelo, sin obtener diferencias en el rendimiento de los corderos. Muñoz-Osorio, et al [19] compararon un sistema de slat de plástico o metal con un suelo de hormigón para engorde de corderos machos en intensivo, registrando mayores rendimientos productivos cuando se empleó el slat, si bien con una fuerte dependencia de otros factores (alimentación, condiciones climáticas, etc. ).…”