Buffel grass (Cenchrus ciliaria L.) substitution for orange pulp on intake, digestibility, and performance of hairsheep lambs

Abstract

Twenty Dorper x Pelibuey male lambs were used to evaluate the effect of substitution of forage with fresh orange pulp (FOP) in diets for fattening lambs on productive behavior, nutrient intake, apparent digestibility coefficient, and feeding costs. Lambs were divided into five groups (n = 4) and then housed in individual pens during 70 d. Treatments consisted of five levels of FOP (0, 25, 50, 75 and 100%) which substituted buffel grass hay on the base diet (40:60%, forage:concentrate). Additionally, changes in chemical composition of FOP stored in stack during 8 d were evaluated (from the day 1 until day 8). Daily feed intake expressed as kg/day and % live weight, lamb growth rate, feeding cost of each lamb per day and per fattening period, hemicellulose intake, and DM, OM, CP, NDF and hemicellulose digestibility showed a quadratic effect (P < 0.05), while DM, OM and CP intake presented a cubic effect (P < 0.05) with the increasing level of FOP. The maximum estimated value for those variables was observed at 75% of hay replacement with FOP. With respect to changes in chemical composition of pulp stored, DM content increased (P = 0.0011) from 210 to 310 g/kg FOP and OM, fiber fraction, and ash content were constant (P > 0.05) among storage days. Therefore, replacing around 75% of buffel grass hay with FOP in diets for fattening lambs resulted in the best growth rate and more efficient diet utilization. Fresh orange pulp stored in a stack did not change its chemical composition, and did not affect its utilization as a sheep feedstuff.

Comportamiento productivo de corderas de pelo, alimentadas con pulpa fresca de limón como fuente energética

“…The values for of DFI recorded in this study were lower than those reported by Cienfuegos-Rivas et al (16), in lambs fed with rations that included dehydrated orange pulp, in which consumption was higher as the level of residue increased. Similarly, Macias-Cruz et al (14), when including up to 30% of fresh orange pulp, obtained a quadratic behavior in consumption (1.13, 1.22, 1.34 and 1.32 kg d -1 ) of diets that included 0, 15, 30 and 45% of pulp, respectively. However, the results of this study are different from those reported by Villanueva et al (5), with DFI of 1.35, 1.22, 1.07 and 0.97 kg by incorporating 15, 20, 25, and 30% of fresh orange pulp in the rations.…”

“…The results obtained for the IVDMD of the rations used increased as the level of FLP increased (Figure 1), until obtaining a value of 68.1% for T 3 (20% of FLP). Macias-Cruz et al (14) reported that increasing fresh orange pulp in rations from 30 to 40%, the IVDMD improved from 80.6 to 84.2%, so it is expected than an increase in IVDMD will raise the ME level in the ration. However, Dadvar et al (13) found that IVDMD was 60.45%.…”

Influence of different levels of dried citrus pulp on <i>in vitro</i> ruminal fermentation kinetics of total mixed ration in goat rumen inocula

“…Macías-Cruz et al (2010) indicated that the DM, OM, and CP apparent digestibility and intake increased with the inclusion of citrus pulp at 75% of the diet DM. The improvements observed in the apparent digestibility of the diet may be due to the better nutrient profile and higher solubility of carbohydrates in the rumen, however, in the present study, IVDMD and IVOMD were improved with the increasing levels of DCP (linear effect P<0.01; Table 2).…”

Características físicas del líquido ruminal y las heces de corderos alimentados con rastrojo de hoja de mango

“…Los sistemas de producción intensivos de ovinos requieren la inclusión de ingredientes energéticos y proteicos en las dietas, lo que incrementa los costos de la dieta de estos animales. Una alternativa que se ha empleado para disminuir los costos de producción en regiones tropicales, son las frutas de temporada (mango, naranja y coco) que son ricas en azúcares fermentables, ácidos orgánicos, fibra y altamente digestibles (Macías-Cruz et al, 2010). En rumiantes es necesario adicionar a las dietas un alto porcentaje de fibra, normalmente esta es suplida con el rastrojo molido de maíz, en los últimos años este se ha encarecido, por tal motivo es necesario la búsqueda de otras fuentes alternas como el aserrín de pino y el olote de maíz (Pérez-Sato et al, 2021).…”