Effect of space allowance on barrow performance to 136 kilograms body weight

• Published in: Journal of animal science Vol. 74; no. 4
• Main Author: Brumm, M.C. (University of Nebraska, Concord.)
• Format: Journal Article
• Language: English
• Published: 01.04.1996
• Subjects: ALOJAMIENTO DE ANIMALES; CAILLEBOTIS; CERDO; EFFICACITE ALIMENTAIRE; EFICIENCIA DE CONVERSION DEL PIENSO; ESPACEMENT; ESPACIAMIENTO; GAIN DE POIDS; GANANCIA DE PESO; INGESTION DE PIENSOS; LARD GRAS; LOGEMENT DES ANIMAUX; PESO; PESO DE LA CANAL; POIDS; POIDS A L'ABATTAGE; PORCIN; PRISE ALIMENTAIRE (ANIMAUX); SUELO EMPARRILLADO; TEJIDO ADIPOSO; TISSU ADIPEUX; TOCINO DORSAL
• ISSN: 0021-8812; 1525-3163
• DOI: 10.2527/1996.744745x

Two experiments were conducted to examine the space requirements of barrows grown to 136 kg BW. In Exp. 1, barrows (initial BW 19.5 kg) were allowed 0.65, 0.84, or 1.02 m2/pig floor space in a fully slatted facility with 12 pigs/pen. In Exp. 2, conducted at three experiment stations in the north central region of the United States (Iowa, Indiana, Nebraska), barrows (initial BW 55.5 kg) were allowed 0.65, 0.93, or 1.20 m2/pig floor space in either partially or totally slatted facilities. In Exp. 1, there was a linear (P 0.05) decrease in ADG for the first 29-d period with increasing space. Overall, ADG responded in a quadratic (P 0.10) on ADFI, last rib fat depth, or rate of lean gain. In Exp. 2, ADG improved linearly (P = 0.08) with increasing space (.836, 0.857 and 0.865 kg/d for the 0.65, 0.93, and 1.20 m2 treatments, respectively), with a quadratic (P = 0.07) response in gain:feed ratio (.270, 0.265, and 0.268, respectively). There was no effect of space allocation on uniformity of gain within a pen as measured by coefficient of variation for pig weights within a pen at the time of first pig removal. The results of these experiments suggest that performance of barrows grown to 136 kg BW was maximized with 0.84 to 1.0 m2 of floor space per pig