caa a22 4500 388059753 CHVBK 20180307125117.0 cr unu---uuuuu 161130e199806 xx s 000 0 eng 10.1017/S1357729800009309 doi S1357729800009309 pii (NATIONALLICENCE)cambridge-10.1017/S1357729800009309 Growth performance, carcass composition and leg weakness in pigs exposed to different levels of physical activity [Elektronische Daten] In order to evaluate the effect of exercise training and spontaneous physical activity on growth performance, carcass composition, and locomotory ability 48 female and 48 entire male pigs were subjected to one of three treatments: individual housing in pens of 2-5 m2 (confined; C), individual housing and treadmill training for 15 minlday at a speed of 4 km/h, 5 days/week for a period of 70 days (trained; T) and group-housing equal to 0·9 m2 per animal (free; F). Pigs in treatment C and T did not differ with regard to daily gain, food intake, kg food per kg gain and carcass lean content. Training did, however, induce significant cardiac hypertrophy (by a proportion of 0·06). In treatment F (i.e. large pens), daily gain was 135 g lower than in treatment C. Dissection of the carcasses showed that treatment F increased the weight of m. psoas major (by 30 g) and the total carcass bone mass (by 130 g) when compared with treatment C. Proportions of carcass lean and intramuscular fat were unaffected by treatment F. Likewise, leg weakness and osteochondrosis did not differ between treatments, whereas the locomotory ability was positively affected by rearing in large pens (treatment F) but not by treadmill training (treatment T). Thus, physical activity in large pens induced various adaptations throughout the body. Copyright © British Society of Animal Science 1998 carcass composition nationallicence growth nationallicence leg weakness nationallicence physical activity nationallicence pigs nationallicence Petersen J. S. Danish Institute of Agricultural Sciences, PO Box 50, DK-8830 Tjele, Denmark Oksbjerg N. Danish Institute of Agricultural Sciences, PO Box 50, DK-8830 Tjele, Denmark Jørgensen B. Danish Institute of Agricultural Sciences, PO Box 50, DK-8830 Tjele, Denmark Sørensen M. T. Danish Institute of Agricultural Sciences, PO Box 50, DK-8830 Tjele, Denmark Animal Science Cambridge University Press 66/3(1998-06), 725-732 1357-7298 66:3<725 1998 66 ASC https://doi.org/10.1017/S1357729800009309 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1357729800009309 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Petersen J. S. Danish Institute of Agricultural Sciences, PO Box 50, DK-8830 Tjele, Denmark NATIONALLICENCE 700 1- Oksbjerg N. Danish Institute of Agricultural Sciences, PO Box 50, DK-8830 Tjele, Denmark NATIONALLICENCE 700 1- Jørgensen B. Danish Institute of Agricultural Sciences, PO Box 50, DK-8830 Tjele, Denmark NATIONALLICENCE 700 1- Sørensen M. T. Danish Institute of Agricultural Sciences, PO Box 50, DK-8830 Tjele, Denmark NATIONALLICENCE 773 0- Animal Science Cambridge University Press 66/3(1998-06), 725-732 1357-7298 66:3<725 1998 66 ASC CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge