Abstract #M497

Section: Swine Species
Session: Swine Species
Format: Poster
Day/Time: Monday 7:30 AM–9:30 AM
Location: Gatlin Ballroom
# M497
Feeder space may affect pig performance in the early growing-finishing period.
David Solà-Oriol1, Patricia Romero1, Deborah Temple1, Laia Blavi*1, Josep Gasa1, 1Animal Nutrition and Welfare Service, Department of Animal and Food Sciences, Universitat Autònoma de Barcelona, Bellaterra, Spain.

The number pigs fed per feeder space decrease along the whole growing period. However moving pigs from the weaning to the growing-finishing facilities is a challenging period and feeder space may affect performance, growth and homogeneity of pigs. The aim of the present work was to study the effect feeder type in terms of feeder space (2 or 5) at the start of the growing period. At weaning a total of 264 28-d-old piglets [Pt × (LD × LW)] were distributed into 24 pens (11 piglets/ pen) according to sex and initial body weight (BW) for the transition period (T; 28 to 64d). During T period, a commercial INOX lidded hopper was used (3 feeder spaces of 17cm/pen). When pigs moved to the growing facilities, the 24 pens were maintained and split into 2 groups of 12 according sex, BW and feeder type. Two different commercial concrete hoppers differing in feeder space were used (2 feeder space of 23cm or 5 feeder space of 18cm/pen) Pigs were feed the same diets during T and growing (G) period. Feed was offered ad libitum in mash form. Therefore, 2 experimental treatments were performed at the start of the growing period (64 to 92d) according to feeder space and sexes taking into account the same conditions from 28 to 64d. Individual BW was recorded at 28, 64 and 92d of age and average daily gain (ADG) and coefficient of variation (CV) of the pen were calculated. Behavioral measures and lesion scoring were also monitored on d 74 of age. No sex effect was observed for the T and G (P > 0.10). Higher BW (33.1 vs 32.5kg; P = 0.061) and ADG (583 vs 562g/d; P = 0.062) were observed for the animals raised in the 5 feeder space hoppers compared with the 2 feeder spaces. Moreover, the CV of the animals at the end of T was reduced (12%) along G with a 5 feeder spaces while increased (1.2%) with 2 feed spaces. Finally, no differences were observed in terms of aggressions and lesions due to feeder space during G period. It is concluded that feeder space may affect growth performance and body weigh homogeneity in growing pigs.

Key Words: feeder space, performance, pig homogeneity