Effect of different combinations of soybean-maize silage on its chemical composition, nutrient intake, degradability, and performance of Pelibuey lambs.
Sheep raising in the state of Guerrero, México, is a primary activity that is worth about US$3,251,931 annually. The objective of the present study was to evaluate the chemical composition, degradability, nutrient intake, and animal performance of Pelibuey lambs fed on different combinations of maize-soybean silages. Twenty-one combinations of maize silage (MS) and soybean silage (SS) were evaluated at day 45 post-ensiling; in each combination, MS was replaced by 5 % of SS. The 21 combinations were analysed for crude protein (CP) and chemical composition. In order to obtain a statistical criterion of potential treatments for the animal feeding test, a cluster analysis was performed based on the CP contents of all combinations at day 45 post-ensiling. From cluster analysis, four treatments were selected T1 = 100-0 % (MS/SS), T8 = 65-35 %, T12 = 45-55 %, and T16 = 25-75 %. Results indicated that cluster analysis was useful for identifying the potential treatments for animal feeding based on the crude protein content. The dry matter (DM), organic matter (OM), and acid detergent lignin (ADL) contents did not declined significantly (P > 0.05) during the fermentation of silages but CP content decreased from day 0 to 45 post-ensiling. The treatment with the highest estimated microbial crude protein synthesis was T8 and it showed the highest metabolizable energy intake, high feed efficiency with a forage-concentrate ratio of 84:16.
Instituto de Ciencias Agropecuarias y Rurales, Universidad Autónoma del Estado de México, El Cerrillo Piedras Blancas, CP 50090, Toluca, Estado de México, Mexico.
Carlos Galdino
CG
Martínez-García
Centro de Estudios Profesionales del Colegio Superior Agropecuario del Estado de Guerrero, km 14.5 de la carretera Iguala-Cocula, Cocula, Estado de Guerrero, Mexico.
Keyla
K
Valencia-Núñez
Centro de Estudios Profesionales del Colegio Superior Agropecuario del Estado de Guerrero, km 14.5 de la carretera Iguala-Cocula, Cocula, Estado de Guerrero, Mexico.
Jesús
J
Bastida-López
Instituto de Ciencias Agropecuarias y Rurales, Universidad Autónoma del Estado de México, El Cerrillo Piedras Blancas, CP 50090, Toluca, Estado de México, Mexico.
Julieta Gertrudis
JG
Estrada-Flores
Departamento de Ciencias de la Alimentación, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana Unidad Lerma, Av. Hidalgo poniente No. 46, Colonia la Estación, 52006, Lerma de Villada, Estado de México, Mexico.
Genaro Cvabodni
GC
Miranda-de la Lama
Departamento de Ciencias de la Alimentación, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana Unidad Lerma, Av. Hidalgo poniente No. 46, Colonia la Estación, 52006, Lerma de Villada, Estado de México, Mexico.
Rosy Gabriela
RG
Cruz-Monterrosa
Departamento de Ciencias de la Alimentación, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana Unidad Lerma, Av. Hidalgo poniente No. 46, Colonia la Estación, 52006, Lerma de Villada, Estado de México, Mexico. a.rayas@correo.ler.uam.mx.
Adolfo Armando
AA
Rayas-Amor
D000821:Animal Feed / Q000032:analysis*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001835:Body Weight; D002980:Climate; D016000:Cluster Analysis; D003902:Detergents / Q000737:chemistry; D004032:Diet / Q000662:veterinary*; D004063:Digestion; D002149:Energy Intake; D005285:Fermentation; D008031:Lignin / Q000737:chemistry; D008297:Male; D008800:Mexico; D034561:Sheep, Domestic / Q000502:physiology*; D012820:Silage / Q000032:analysis*; D013025:Glycine max / Q000737:chemistry; D003313:Zea mays / Q000737:chemistry
D003902:Detergents; D008031:Lignin
In sacco degradability; Pelibuey lambs; Protein; Silage; Soybean; Weight gain