Inclusion of ripe mango as a source of energy in diets for Creole lambs in the dry tropics
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Inclusion of ripe mango as a source of energy in diets for Creole lambs in the dry tropics Jonatan Espinoza-Sánchez 1 & Paulino Sánchez-Santillán 2 Jerónimo Herrera-Pérez 2 & Filiberto Magadan-Olmedo 2
&
Nicolás Torres-Salado 2 & Marco Antonio Ayala-Monter 2 &
Received: 11 December 2019 / Accepted: 10 September 2020 # Springer Nature B.V. 2020
Abstract The aim of this investigation was to evaluate the use of ripe mango as a source of energy in an integral diet consisting of regional products for fattening lambs. Twenty-seven Creole lambs were used and given a 10-day period to adapt to the diet. Three treatments were evaluated: T1 = 40% mango; T2 = 50% mango; and T3 = control diet. In the in vitro analysis, partial and accumulated production of biogas and methane, degradation of dry matter, and neutral detergent fiber were determined. In the in vivo analysis, dry matter intake (DMI), daily weight gain (DWG), apparent digestibility of nutrients, and ruminal characteristics were estimated. The experimental design was completely random. The in vitro results helped hypothesize that the diets with low fiber content would not affect potential dry matter intake. With the exception of the protozoa count, ruminal characteristics were not different among diets (p > 0.05). In productive response, T3 was 13.73% higher DMI than T1, which was 32.24% higher than T2. T3 promoted 61.22% more DWG than T1 and T2. T2 displayed better digestibility of dry matter, organic matter, neutral detergent fiber, and crude protein than T3 (p < 0.05). Fattening lambs fed rations that contain 40% and 50% mango reduces the dry matter intake and daily weight gain relative to the control, although apparent digestibility is higher than for the control diet. Keywords Lamb . Tropics . Ripe mango . Apparent digestibility . Productive variables
Introduction In Mexico, production of standing sheep was 122,464.33 t (SIAP 2018). Sheep production systems in the tropics are well-adapted to the extreme weather conditions. They add livelihood security for poor and marginal farmers, as well as adaptability to harsh environmental conditions, variations in energy, and mineral metabolism for low feed intake. Sheep often depend on low-quality crop residues for their nutrition in tropical regions, and this may not be enough to meet production expenses of the flock, eventually leading to low production outputs (Sejian et al. 2017). This leads to highly varied * Paulino Sánchez-Santillán [email protected] 1
Animal Production-Veterinary Medicine Program, Autonomus University of Guerrero, Cuajinicuilapa, Guerrero, Mexico
2
School of Veterinary Medicine and Animal Production No. 2, Autonomus University of Guerrero, Cuajinicuilapa, Guerrero, Mexico
sheep production systems with characteristics typical of each region, determined by the availability of resources (Partida et al. 2013). Intensive production systems require inclusion of energy and protein ingredients in the diets. Therefore, unconventional alternatives, such as tropical fruits
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