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The effects of low levels of dietary trace minerals on the plasma levels, faecal excretion, health and performance of pigs in a hot African climate
2009
Boma, M.H. | Bilkei, G.
The present study was performed in order to evaluate the effects of lower than usual industry levels of dietary trace minerals on plasma levels, faecal excretion, performance, mortality and morbidity in growing-finishing pigs in a hot African climate. Group 1 (n =100 pigs) received a diet with common industry levels of trace minerals. Group 2 (n =100 pigs) received reduced dietary trace mineral levels but were fed the same basic diet as Group 1. Mortality, morbidity, pig performance and carcass measurements were evaluated. Two pigs in Group 1 and three pigs in Group 2 died. Thirteen pigs in Group 1 and 27 pigs in Group 2 were medically treated (P < 0.05). Carcass masses, back fat depth, loin depth, and lean percent were not significantly different between the groups. However, the carcasses when evaluated revealed a non-significant higher back fat thickness, lower loin eye area and percentage of fat-free lean in barrows compared to gilts within each group. Despite lower initial masses, pigs fed diets containing industry levels of trace minerals were heavier (P < 0.05) and had a higher (P< 0.05) than average daily gains compared to those that received a diet containing lower levels of trace minerals. Faecal zinc excretion was significantly lower (P < 0.05) in pigs fed with lower dietary zinc levels. Copper, manganese and iron excretion were not affected (P > 0.05) by the dietary levels of these trace minerals. Plasma trace mineral concentrations were not affected by the dietary treatment.
Show more [+] Less [-]A retrospective study of the prevalence and seasonal variation of Fasciola gigantica in cattle slaughtered in the major abattoirs of Zimbabwe between 1990 and 1999
2004
Pfukenyi, D.M. (Central Veterinary Laboratory, Causeway (South Africa). Diagnostic and Research Branch) | Mukaratirwa, S.
Protective levels of canine distemper virus antibody in an urban dog population using plaque reduction neutralization test
2004
Oyedele, O.I. (Witwatersrand Univ., Johannesburg (South Africa). Anatomical Sciences School) | Oluwayelu, D.O. | Cadmus, S.I.B. | Odemuyiwa, S.O. | Adu, F.D.
Occurrence of concurrent trypanosomosis, theileriosis, anaplasmosis and helminthosis in Friesian, Zebu and Sahiwal cattle in Uganda
2002
Magona, J.W. | Mayende, J.S.P. (Livestock Health Research Inst., Tororo (Uganda))
Apparent prevalence of dourine in the Khomas region of Namibia
2002
Kumba, F.F. | Claasen, B. | Petrus, P. (Namibian Univ., Windhoek (Namibia). Animal Science Dept.)
Animal-level risk factors for Trypanosoma evansi infection in camels in eastern and central parts of Kenya
2002
Ngaira, J.M. | Bett, B. | Karanja, S.M. (Kenya Trypanosomiasis Research Inst., Kikuyu (Kenya))
The parasitological and serological prevalence of tsetse-transmitted bovine trypanosomosis in the Eastern Caprivi (Caprivi District, Namibia)
1999
Van den Bossche, P. | Mudenge, D. (Regional Tsetse and Trypanosomosis Control Programme, Harare (Zimbabwe)) | Mubanga, J. | Norval, A.
Changes in the incidences of the different serovars of Haemophilus paragallinarum in South Africa: a possible explanation for vaccination failures
1996
Bragg, R.R. | Coetzee, L. (Pretoria Univ., Onderstepoort (South Africa). Dept. of Poultry Diseases) | Verschoor, J.A.
Seasonal prevalence of bovine trypanosomosis in a tsetse-infested zone and a tsetse-free zone of the Amhara Region, north-west Ethiopia
Cherenet, T.(Malaysia Putra Univ., Serdang (Malaysia). Veterinary Medicine Faculty) | Sani, R.A. | Panandam, J.M. | Nadzr, S. | Speybroeck, N. | Van den Bossche, P.
A preliminary investigation of tuberculosis and other diseases in African buffalo (Syncerus caffer) in Queen Elizabeth National Park, Uganda
Kalema-Zikusoka, G. | Bengis, R.G. | Michel, A.L. | Woodford, M.H.