EFFECTS OF PRODUCTION STRESSES AND ASCORBIC ACID SUPPLEMENTATION ON SOME BIOCHEMICAL PARAMETERS IN THE DOMESTIC FOWL (Gallus domesticus)

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dc.contributor.authorAMEHIGAH, SUNDAY
dc.date.accessioned2014-02-25T09:24:12Z
dc.date.available2014-02-25T09:24:12Z
dc.date.issued1999-08
dc.descriptionA Thesis submitted to the Postgraduate School, Ahmadu Bello University, in partial fulfillment of the requirements for the award of the degree of Master of Science in Biochemistry. DEPARTMENT OF BIOCHEMISTRY FACULTY OF SCIENCE AHMADU BELLO UNIVERSITY ZARIA - NIGERIA AUGUST, 1999en_US
dc.description.abstractModern large-scale poultry production is associated with many stress factors. These include exposure to high light and temperature, multiple entries to pens, over-crowding, transportation between farms, etc. It is also known that response to stress can be by way of changes in certain biocheitnical parameters in animals and that ascorbic acid and other micro-nutrient elements supplementation to some extent reduces the effects of stress. This work is aimed at studying the effects of some of these stress factors and the possible role of ascorbic acid in ameliorating the effects. To this end, a total of eight hundred (800) day-old broilers from which a representative sample of five hundred (500) broilers was randomly drawn was experimented with in stages to evaluate the effects of age, sex and stress factors (high / low light exposure, a high / low number of entry to pen and transportation), litis was done with and without ascorbic acid supplementation (300mg / kg diet). Haematocrit (PCV), total serum cholesterol, total serum protein, total! serum creatinine and total available serum sugars were the selected biochemical parameters whose levels were monitored as indices of stress. The results showed that age and sex had similar effects on the levels of these biochemical parameters in the broilers. There were no changes in PCV with age (P > 0.01). But levels of other biochemical parameters showed some significant changes (P < 0.01), particularly more so in male broilers than in the female ones. High light exposure generally increased the levels of the biochemical parameters especially up to the age of 5 weeks. In some cases, the increase is sex dependent. A high number of entries into the pen significantly increased (P < 0.01) the levels of the biochemical parameters in broilers, except for total cholesterol level which dropped (P < 0.01) in male broilers at 8 weeks of age. Similarly, total protein and creatinine levels decreased (P < 0.01) in male and female broilers at 8 weeks of age; while total sugar levels decreased (P < 0.01) in male and female broilers at 3 and 5 weeks of age. But, low light exposure and a low number of entry into the pen were similar in not causing any significant change (P > 0.01) to the levels of the biochemical parameters. Transportation significantly increased (P < 0.01) only the total cholesterol and sugar levels in broilers at 8 weeks of age. Ascorbic acid supplementation introduced selectivity to the effects of stress factors on the levels of the biochemical parameters. This was shown through either the maintenance of homeostatic levels (P > 0.01), significant increase or decrease (P < 0.01) of levels. It is observed from this work that change of levels of the biochemical parameters in broilers during production is as a result of the production stresses. The study showed that ascorbic acid supplementation (300mg / kg diet) in broilers, to some extent, ameliorated some of the adverse effects of these production stresses in broilers.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/2492
dc.language.isoenen_US
dc.subjectEFFECTSen_US
dc.subjectPRODUCTION STRESSESen_US
dc.subjectASCORBIC ACIDen_US
dc.subjectSUPPLEMENTATIONen_US
dc.subjectBIOCHEMICAL PARAMETERSen_US
dc.subjectDOMESTIC FOWL (Gallus domesticus)en_US
dc.titleEFFECTS OF PRODUCTION STRESSES AND ASCORBIC ACID SUPPLEMENTATION ON SOME BIOCHEMICAL PARAMETERS IN THE DOMESTIC FOWL (Gallus domesticus)en_US
dc.typeThesisen_US
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