title: Ingestive behavior and nitrogen balance of confined santa ines lambs fed diets containing soybean hulls.
abstract: The objective of this study was to assess the effect of substituting corn with soybean hulls on the ingestive behavior and nitrogen balance of Santa Ines lambs. A total of 25 lambs with an initial body weight of 20±2 kg at approximately six months of age, sheltered individually in stalls (1.10 m×1.0 m), considering an entirely casual experimental delineation. Soybean hulls were substituted for corn at 0, 250, 500, 750, and 1,000 g/kg of dry matter (DM). The time spent feeding, ruminating, masticating, and resting was not affected by the substitution of corn with soybean hulls. In fact, the feeding efficiency in g DM/h and the rumination efficiency in g DM/bolus increased linearly with soybean hull substitution in the feed. Although the nitrogen balance was not altered by the use of soybean hulls as a substitute for corn in the diets of Santa Ines lambs, the N ingested and N digested expressed in g/d, N retained as a percentage of that ingested, and N retained as a percentage of that digested displayed quadratic behavior. In conclusion, corn can be substituted with soybean hulls up to 1,000 g/kg of dry matter in the concentrate, without changing the ingestive behavior and nitrogen balance.
authors: Southwest State University of Bahia, Itapetinga - Bahia, Brazil.
authors: Milena Patrícia Viana
authors: MP
authors: Bastos
authors: Southwest State University of Bahia, Itapetinga - Bahia, Brazil.
authors: Gleidson Giordano Pinto
authors: GG
authors: de Carvalho
authors: Southwest State University of Bahia, Itapetinga - Bahia, Brazil.
authors: Aureliano José Vieira
authors: AJ
authors: Pires
authors: Southwest State University of Bahia, Itapetinga - Bahia, Brazil.
authors: Robério Rodrigues
authors: RR
authors: Silva
authors: Southwest State University of Bahia, Itapetinga - Bahia, Brazil.
authors: Antônio Eustáquio
authors: AE
authors: Filho
authors: Southwest State University of Bahia, Itapetinga - Bahia, Brazil.
authors: Edileusa de Jesus
authors: Ede J
authors: Dos Santos
authors: Southwest State University of Bahia, Itapetinga - Bahia, Brazil.
authors: Daiane Maria Trindade
authors: DM
authors: Chagas
authors: Southwest State University of Bahia, Itapetinga - Bahia, Brazil.
authors: Daniele Soares
authors: DS
authors: Barroso
authors: Southwest State University of Bahia, Itapetinga - Bahia, Brazil.
authors: George Abreu
authors: GA
authors: Filho
keywords: Alternative Feed; Meat Production; Nutrition; Sheep