Abstract
Two experiments (Exps. II and III) were performed with colonic material from swine dysentery as inoculum. The results of Exp. II showed that the inoculation produced less pronounced clinical signs and patho-morphological lesions and also affected fewer pigs in the groups supplemented with vitamin E and selenium than in the group not given a corresponding supplementation. It is therefore concluded that the daily supply of these 2 nutritional factors significantly increased the resistance to swine dysentery. The cod liver oil incorporated in the diet of 2 groups in Exp. II had also a positive effect in this respect. In Exp. III the inoculation of the pigs fed only the basic ration (Group 1) produced relatively moderate clinical signs and patho-morphological lesions in half of the animals, the results in the rest of the group are, however, in accordance with the observations in the corresponding groups of the 2 preceding experiments. The other results of Exp. III indicate an increased resistance to swine dysentery in the group with selenium as the only supplement. However, no equivalent condition could be demonstrated when a similar supplement of vitamin E was used. The pigs in Exp. III given both nutritional factors showed perhaps the best resistance to swine dysentery, especially when the patho-morphological lesions are taken into consideration.
Keywords: swine dysentery, pseudomembraneous colitis, Treponema hyodysenteriae, vitamin E and selenium deficiency, diet
Sammendrag
To forsøk (Exp. II and III) ble utført med griser podet med kolonmateriale fra tilfelle av svinedysenteri. Resultatene i Exp. II viser at podningen forårsaket mindre uttalte symptomer og patomorfologiske forandringer og også omfattet et mindre antall griser i de grupper som ble gitt tillskudd av vitamin E og selen enn i gruppen som ikke fikk tilsvarende tillskudd. Det er derfor konkludert med at den tilførsel som ble gitt av disse to næringsfaktorene, øket modstandskraften overfor svinedysenteri. Tranen som var iblandet föret til 2 av gruppene i Exp. II, øket også motstandskraften hos grisene. I Exp. III medførte podningen av dyr föret med bare grunnfór (gruppe 1) relativt moderate symptomer og patomorfologiske forandringer hos halvparten av dyrene, resultatene i gruppen for øvrig var imidlertid i samsvar med tilsvarende grupper i de forutgående forsøkene. De andre resultatene i Exp. III indikerer økt mostandskraft overfor svinedysenteri i den gruppen som hadde fått selen som eneste daglige tilskudd. Derimot kunne man ikke påvise noen slik effekt etter et tilsvarende vitamin E-tilskudd. De grisene i Exp. III som ble gitt begge faktorene, viste kanskje størst motstandskraft overfor svinedysenteri, særlig når en ser på de patomorfologiske forandringene.
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References
- Andrews E D, Hartley W J, Grant A B. Selenium-responsive diseases of animals in New Zealand. N. Z. vet. J. 1968;16:3–17. doi: 10.1080/00480169.1968.33738. [DOI] [PubMed] [Google Scholar]
- Groce A W, Miller E R, Ullrey D E, Ku P K, Keahey K K, Ellis D J. Selenium requirements in corn-soy diets for growing-finishing swine. J. Anim. Sci. 1973;37:948–956. doi: 10.2527/jas1973.374948x. [DOI] [PubMed] [Google Scholar]
- Harris D L, Kinyon J M, Songer J G, Glock R D. Diagnosis of swine dysentery by culture. Feedstuffs. 1976;48:28. [Google Scholar]
- Acta vet. scand. 1965. [DOI] [PMC free article] [PubMed]
- Olson L D. Clinical and pathological observations on the experimental passage of swine dysentery. Canad. J. comp. Med. 1974;38:7–13. [PMC free article] [PubMed] [Google Scholar]
- Rasmussen O K. Selenium concentration and deposition. Performance and carcass quality in pigs fed different levels of sodium selenite. Acta agrie. scand. 1974;24:115–125. doi: 10.1080/00015127409433233. [DOI] [Google Scholar]
- Simesen M G, Pedersen K B. Selenium determinations in Danish swine affected with hepatosis dietetica. Acta vet. scand. 1975;16:137–139. doi: 10.1186/BF03546703. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Songer J G, Kinyon J M, Harris D L. Selective medium for isolation of Treponema hyodysenteriae. J. clin. Microbiol. 1976;4:57–60. doi: 10.1128/jcm.4.1.57-60.1976. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Teige J, jr., Nordstoga K, Aursjø J. Influence of diet on experimental swine dysentery. 1. Effects of a vitamin E and selenium deficient diet supplemented with 6.8 % cod liver oil. Acta vet. scand. 1977;18:384–396. doi: 10.1186/BF03548436. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Underwood E J. Trace Elements on Human and Animal Nutrition. 4. New York and London: Acad. Press; 1977. [Google Scholar]
- Van Vleet J F, Carlton W, Olander H J. Hepatosis dietetica and Mulberry heart disease associated with selenium deficiency in Indiana swine. J. Amer. vet. med. Ass. 1970;157:1208–1219. [PubMed] [Google Scholar]