Parasite prevalence, nutritionally-related blood metabolites and pre-slaughter stress response in Nguni, Bonsmara and Angus steers raised on veld

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dc.contributor.advisorOkoh, Anthony Ien
dc.contributor.advisorChimonyo, Men
dc.contributor.authorNdlovu, Thulileen
dc.date.accessioned2026-08-12T23:25:35Z
dc.date.available2026-08-12T23:25:35Z
dc.date.issued2008en
dc.description.abstractThe effects of month on body weight, body condition scores, internal parasite prevalence and on nutritionally related blood metabolites were studied in Angus, Bonsmara and Nguni steers raised on sweet veld. Pre-slaughter stress was also determined using catecholamines, cortisol, dopamine, packed cell volume and serum creatinine levels. The blood chemical constituents evaluated included glucose, cholesterol, total protein, creatinine, urea, globulin, albumin, calcium, phosphorus, magnesium, aspartate amino transferase (AST), alkaline phosphatase (ALP) and creatinine kinase (CK). The Nguni steers maintained their body condition throughout the study period whereas Angus steers had the least body condition scores. Parasite levels were high during the rainy season and low during the dry season. The predominant internal parasites were Haemonchus (39.3 percent), Trichostrongylus (37.8 percent), Cooperia pectinita (25.5 percent), Fasciola gigantica (16.3 percent) and Ostertagia ostertagi (11.2 percent). The Nguni had the least parasite infestation levels and had high PCV levels. Nguni had higher levels of cholesterol and glucose (2.86 and 4mmol/l, respectively) than the other two breeds. Nguni and Bonsmara steers had higher (P<0.05) mineral levels. There were significant breed and month differences for glucose, cholesterol, creatinine, calcium, albumin, phosphorus, albumin-globulin ratio and ALP levels. Bonsmara was more susceptible to transport and pre-slaughter stress as it had the highest (P<0.05) levels of adrenalin (10.8nmol/mol), noradrenalin (9.7nmol/mol) and dopamine (14.8nmol/mol) levels, whereas the Nguni had the least levels of adrenalin (6.5nmol/mol), noradrenalin (4.6nmol/mol) and dopamine (4nmol/mol) levels. In conclusion, Nguni steers were better adapted to the local environmental conditionsen
dc.format117 leaves; 30 cmen
dc.formatpdfen
dc.identifier.citationNdlovu, Thulile. 2008en
dc.identifier.othervital:11258en
dc.identifier.otherhttp://hdl.handle.net/10353/73en
dc.identifier.otherParasitesen
dc.identifier.otherNguni cattleen
dc.identifier.otherBonsmara cattleen
dc.identifier.otherMetabolitesen
dc.identifier.otherSlaughtering and slaughter-housesen
dc.identifier.otherAberdeen -- Angus cattleen
dc.identifier.urihttp://hdl.handle.net/20.500.11837/4519
dc.language.isoEnglishen
dc.publisherUniversity of Fort Hareen
dc.publisherFaculty of Science & Agricultureen
dc.rightsUniversity of Fort Hareen
dc.subjectParasitesen
dc.subjectNguni cattleen
dc.subjectBonsmara cattleen
dc.subjectMetabolitesen
dc.subjectSlaughtering and slaughter-housesen
dc.subjectAberdeen -- Angus cattleen
dc.titleParasite prevalence, nutritionally-related blood metabolites and pre-slaughter stress response in Nguni, Bonsmara and Angus steers raised on velden
dc.title.alternativeParasite prevalence, nutritionally-related blood metabolites and pre-slaughter stress response in Nguni, Bonsmara and Angus steers raised on velden
dc.typeThesisen
dc.typeMastersen
dc.typeMSc (Microbiology)en

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