Foraging behaviour of growing pigs on grassland in relation to stocking rate and feed crude protein level

Applied Animal Behaviour Science

Volumn 62, Issue 2-3, 1999, Pages 183-197

  Andresen, Niels ^a   Redbo, Ingrid ^a  

^a SWEDISH UNIVERSITY OF AGRICULTURAL SCIENCES   (Sweden)

Author keywords

Foraging behaviour; Outdoor; Pasture; Pig feeding

Indexed keywords

FORAGING BEHAVIOR; LIVESTOCK FARMING; PIG; STOCKING DENSITY;

SUS SCROFA;

EID: 0033557218     PISSN: 01681591     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0168-1591(98)00221-4     Document Type: Article

References (22)

1. Andresen, N., 1996. Svin på vallbrott. Markberedare eller betesdjur? In: Ecological Agriculture No. 20. Conference Ecological Agriculture, Uppsala, 1995, Swed. Univ. Agr. Sci., Dept. of Crop Production Sci. (in Swedish), pp. 139-146.
2. Barrett H.R. The feral hog on the Dye Creek Ranch, California. Hilgardia. 46(9):1978;283-355.
3. Cronin G.M., Wiepkema P.R. An analysis of stereotyped behaviour in tethered sows. Ann. Rech. Vét. 15:1984;263-270.
4. Dardaillon M. Age-class influences on feeding choices of free-ranging wild boars (sus scrofa). Can. J. Zool. 67:1989;2792-2796.
5. Day J.E.L., Kyriazakis I., Lawrence A.B. The effect of food deprivation on the expression of foraging and exploratory behaviour in the growing pig. Appl. Anim. Behav. Sci. 42:1995;193-206.
6. Jennische, P., Larsson, K., 1990. Traditionella svenska analysmetoder för foder och växtmaterial (in Swedish). National Laboratory for Agricultural Chemistry Methods Report no. 60. Uppsala, 15 pp.
7. Jensen M.B., Kyriazakis I., Lawrence A.B. The activity and straw directed behaviour of pigs offered foods with different crude protein content. Appl. Anim. Behav. Sci. 37:1993;211-221.
8. Kurz J.C., Marchinton R.L. Radiotelemetry studies of feral hogs in South Carolina. J. Wildl. Mgmt. 36(4):1972;1240-1248.
9. Kyriazakis I., Emmans G.C. Diet selection in pigs: dietary choices made by growing pigs following a period of underfeeding with protein. Anim. Prod. 52:1991;337-346.
10. Littell, R.C., Milliken, G.A., Stroup, W., Wolfinger, R.D., 1996. SAS® Systems for Mixed Models, Cary, NC: SAS Institute, 633 pp.
11. Nordic Committee on Food Analysis, 1976. Nitrogen. Determination in foods and feeds according to Kjeldahl, 3rd. edn., No. 6, 4 pp.
12. Petersen V. The development of feeding and investigatory behaviour in free-ranging domestic pigs during their first 18 weeks of life. Appl. Anim. Behav. Sci. 42:1994;87-98.
13. Petersen V., Simonsen H.B., Lawson L.G. The effect of environmental stimulation on the development of behaviour in pigs. Appl. Anim. Behav. Sci. 45:1995;215-224.
14. Simonsson, A., 1994. Näringsrekommendationer och fodermedelstabeller till svin (in Swedish). Swedish University of Agricultural Sciences, Research Information Centre, Uppsala. Husdjur, 75, 71 pp.
15. SAS Institute, 1987. SAS/STAT™ Guide for Personal Computers, Version 6 edn. SAS Institute, Cary, NC, 1028 pp.
16. Stephens, D.W., Krebs, J.R., 1986. Foraging Theory. Princeton University Press, Princeton, NJ, 274 pp.
17. Stolba A., Wood-Gush D.G.M. The assessment of behavioural needs of pigs under free-range and confined conditions. Appl. Anim. Ethology. 7:1981;388-389.
18. Stolba A., Wood-Gush D.G.M. The behaviour of pigs in a semi-natural environment. Anim. Prod. 48:1989;419-425.
19. Wood-Gush D.G.M., Vestergaard K. Exploratory behavior and the welfare of intensively kept animals. J. Agric. Ethics. 2:1989;161-169.
20. Wood-Gush D.G.M., Jensen P., Algers B. Behaviour of pigs in a novel semi-natural environment. Biol. Behav. 15:1990;62-73.
21. Worthington T.R., Danks P.W. Nitrate leaching and intensive outdoor pig production. Soil Use and Management. 8:1992;56-60.
22. Young R.J., Lawrence A.B. The effect of high and low rates of food reinforcement on the behaviour of pigs. Appl. Anim. Behav. Sci. 49:1996;365-374.