Tackling the future challenges of Organic Animal Husbandry - vTI

More documents

Recommendations

Info

! Agriculture and Forestry Research, Special Issue No 362 (Braunschweig, 2012) ISSN 0376-0723 Download: www.vti.bund.de/en/startseite/vti-publications/landbauforschung-special-issues.html De Pedro E, Casillas M & Miranda CM (1997): Microwave oven application in the extraction of fat from the subcutaneous tissue of Iberian pig ham. Meat Science 45, 45-51. Edwards SA (2002): Feeding Organic Pigs. University of Newcastle (ed.), Newcastle, UK. Folch J, Lees M & Sloane-Stanley GH (1957): A simple method for the isolation and purification of total lipids from animal tissues. Journal of Biological Chemistry 226, 497-509. SAS (2008): User’s Guide Statistics. Version 9.1.3. SAS Institute, NC, USA. Stoffel W, Chu. F & Ahrens. E. H. Jr (1959): Analysis of long-chain fatty acids by gas–liquid chromatography. Analytical Chemistry 31, 307-308. 302
RAHMANN G & GODINHO D (Ed.) (2012): Tackling the Future Challenges of Organic Animal Husbandry. Proceedings of the 2 nd OAHC, Hamburg/Trenthorst, Germany, Sep 12-14, 2012 Organic C and total N dynamics in soil in an organic pig farm DAVIDE BOCHICCHIO*, MICHELE COMELLINI, ROSA MARCHETTI, GILDA PONZONI AND GIACINTO DELLA CASA Agricultural Research Council (CRA), Swine husbandry research unit (SUI). San Cesario sul Panaro (MO), Italy. *Corresponding author: davide.bochicchio@entecra.it Key words: organic pig, soil, fertility, pasture, C, N. Abstract One of the challenges of including pigs in a sustainable farming rotation is to preserve soil fertility. In fact, without a correct rotation of the paddocks, grazing pigs cause, with their normal feeding behaviour, excavations, destruction of the sward and soil structure damage, with negative influence on soil fertility. The aim of this study is to investigate soil fertility dynamics throughout one year in an organic outdoor pig farm. An on-farm study was carried out in the south of Tuscany, in Italy. The experimental design included 6 plots hosting different crop sequences. Grazing pigs were periodically moved among the plots. Soil organic C (SOC) and total N (Ntot) were selected as fertility indicators, and their contents were measured in the top 0-20-cm soil layer, in 12 dates, in the period between June 2010 and September 2011. Mean SOC and Ntot contents were remarkably different depending on the plot. However, for a given plot, they increased or did not vary during the sampling period, with exception of the sorghum plot, where a slight decrease in C content was observed. These preliminary results support the hypothesis that soil fertility is not negatively affected by outdoor pig grazing, with the cropping system adopted by the organic farm hosting this experiment. Introduction According to the European organic regulation (EC N. 834/2007) organic stock farming is a landrelated activity and animals should have, whenever possible, access to open air or grazing areas. At the same time, organic production should contribute to maintaining and enhancing soil fertility as well as preventing soil erosion. One of the challenges of including pigs in a sustainable farming rotation is to preserve soil fertility. Without a correct rotation of the paddocks grazing pigs cause, with their normal feeding behaviour, excavations, destruction of the sward and soil structure damage (Quintern and Sundrum 2006). Consequently these actions may negatively affect soil fertility. The aim of this study is to investigate soil fertility dynamics throughout one year in an organic pig farm. An on-farm experiment was used for this purpose (S.S.C. 1998). Material and methodology An on-farm experiment was carried out in the south of Tuscany, in an organic outdoor pig farm, at Paganico (GR) 20 m a.s.l. The experimental design included 5 side by side strip plots hosting different crops or crop sequences (Table 1): polyfita meadow (Vicia sativa L., Trifolium alexandrinum L., Avena sativa L.); barley (Hordeum vulgare L.) followed by meadow; forage sorghum (Sorghum bicolor L.); vegetable crops (Solanum lycopersicum L. and Solanum tuberosus L.); old lucerne stand (Medicago sativa L.). The thermal regime is mediterranean. Annual temperatures vary between -3 and 35°C. Mean annual precipitation range is 711 mm. A herd of 50 pigs (including lactating sows, suckling piglets, weaned, growing and finishing pigs) were periodically moved among the plots, during the experimental period, using electric fences. As a rule, pigs were let to graze in plots free from growing crops, with exceptions for plots with crop re-growth (Table 1). Soils were a silty loam (meadow and barley plots), a sandy loam (sorghum and vegetable plots) and a loam (old lucerne stand). Soil sampling was carried out in 12 dates, in the period between June 2010 and Sep- 303
Page 1 and 2:
Sonderheft 362 Special Issue Tackli
Page 3:
Landbauforschung vTI Agriculture an
Page 7 and 8:
Foreword Organic animal husbandry s
Page 9 and 10:
RAHMANN G & GODINHO D (Ed.) (2012):
Page 11 and 12:
Content RAHMANN G & GODINHO D (Ed.)
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Introduction RAHMANN G & GODINHO D
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
References RAHMANN G & GODINHO D (E
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Abstract RAHMANN G & GODINHO D (Ed.
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Discussion RAHMANN G & GODINHO D (E
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Factors Plant Height (cm) RAHMANN G
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Page 233 and 234:
Results RAHMANN G & GODINHO D (Ed.)
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
FEC adjusted for dry matter 12000 1
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258: RAHMANN G & GODINHO D (Ed.) (2012):
Page 267 and 268: Conclusions RAHMANN G & GODINHO D (
Page 277 and 278: Results RAHMANN G & GODINHO D (Ed.)
Page 291 and 292: Abstract RAHMANN G & GODINHO D (Ed.
Page 307: RAHMANN G & GODINHO D (Ed.) (2012):
Page 353 and 354: Introduction RAHMANN G & GODINHO D
Page 355 and 356: 349 Table 1. Breeding information o
Page 359 and 360:
Page 361 and 362:
Page 363 and 364:
Page 365 and 366:
Page 367 and 368:
Page 369 and 370:
Page 371 and 372:
Page 373 and 374:
Page 375 and 376:
Page 377 and 378:
Page 379 and 380:
Page 381 and 382:
Page 383 and 384:
Page 385 and 386:
Page 387 and 388:
Page 389 and 390:
Page 391 and 392:
Page 393 and 394:
Page 395 and 396:
Page 397 and 398:
Page 399 and 400:
Page 401 and 402:
Page 403 and 404:
Page 405 and 406:
Page 407 and 408:
Page 409 and 410:
Page 411 and 412:
Page 413 and 414:
Page 415 and 416:
Page 417 and 418:
Page 419 and 420:
Page 421 and 422:
Page 423 and 424:
Page 425 and 426:
Page 427 and 428:
Page 429 and 430:
Page 431 and 432:
Page 433 and 434:
Page 435 and 436:
Page 437 and 438:
Page 439 and 440:
Page 441 and 442:
Page 443 and 444:
Page 445 and 446:
Kg liveweight (mean) RAHMANN G & GO
Page 447 and 448:
Page 449 and 450:
Page 451 and 452:
Page 453 and 454:
Results RAHMANN G & GODINHO D (Ed.)
Page 455 and 456:
Page 457 and 458:
Page 459 and 460:
Page 461 and 462:
Page 463 and 464:
Page 465 and 466:
Page 467 and 468:
Page 469 and 470:
Page 471 and 472:
Page 473 and 474:
Page 475 and 476:
Page 477 and 478:
Page 479 and 480:
Page 481 and 482:
Page 483 and 484:
Page 485 and 486:
Page 487 and 488:
Page 489:
348 Herwart Böhm (Hrsg.) (2011) Op
show all

Tackling the future challenges of Organic Animal Husbandry - vTI

Create successful ePaper yourself

Delete template?

Save as template?