EFFECT OF PROCESSING AND MAXIGRAIN® ENZYME SUPPLEMENTATION ON THE UTILIZATION OF RICE OFFAL BY BROILER CHICKENS

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dc.contributor.authorKEHINDE, HANNAH WAYEBO
dc.date.accessioned2014-02-27T10:18:13Z
dc.date.available2014-02-27T10:18:13Z
dc.date.issued2012-10
dc.descriptionDEPARTMENT OF ANIMAL SCIENCE, FACULTY OF AGRICULTURE, AHMADU BELLO UNIVERSITY, ZARIA NIGERIA OCTOBER, 2012.en_US
dc.description.abstractTwo experiments were carried out to determine the effect of processing of rice offal with or without Maxigrain® enzyme supplementation on its utilization of rice offal by broiler chickens at 10% and 15% level inclusion in starter and finisher diets, respectively. The first experiment determined the effect of differently processed rice offal on growth performance, carcass and blood parameters. The starter lasted 25days while finisher phase lasted 21days. Growth performance, carcass characteristics, haematological and economic indices were evaluated. There were five diet treatments for each phase and treatment were replicated three times with equal number of birds in a completely randomized design. The second experiment was conducted to determine the effect of differently processed rice offal supplemented with Maxigrain® enzyme at 10g/100kg on broiler chickens. In the first experiment a total 225 three-day old broiler chicks were used in the first experiment during the starter phase and 210 five weeks old chickens at the finisher phase. The experimental diets consisted of treatment 1 control (no rice offal), treatment 2 (unprocessed rice offal), treatment 3 (regrind rice offal), treatment 4 (boiled rice offal) and treatment 5 (Fermented rice offal). The results showed that dietary treatments had significant (P<0.05) effects on final body weight, weight gain, feed cost/kg gain, total cost and income above feed expenditure. The chicks fed regrind rice offal in their diet gave the highest body weight, weight gain and income above feed expenditure. For the finisher phase, the birds fed boiled rice offal in their diet performed significantly (P<0.05) better than the rest in terms of final weight, weight gain, Feed cost/kg gain and income above feed expenditure there were no significant (P>0.05) difference in feed conversion ratio and mortality rate. Diet treatments had significant (P<0.05) effects on packed cell volume and total protein but the differences were within normal range. The carcass evaluation showed significant (P<0.05) differences across treatments for live, slaughtered, defeathered weights and dressed percentage. There were also significant (P<0.05) effects on some prime cuts and organs. For experiment 2, there were significant (P<0.05) difference in final weight, body weight gain, feed intake, feed conversion ratio, income above feed expenditure of the starters. The birds fed the control diet (without rice offalsupplemented with Maxigrain® enzyme) gave the best results for final weight, weight gain. For the finisher phase, there were significant (p<0.05) difference between means for final weights, weight gain, feed conversion ratio feed cost/kg gain and income above feed expenditure. The control and fermented rice offal enzyme – supplemented group gave better results in terms of final weight, weight gain and were at par. Dietary treatments had significant (p<0.05) effect on the PCV and Haemoglobin and on breast, drum stick, thigh and wing weights. This study therefore showed that regrinding rice offal at 0.5mm and at 10% inclusion was best at the starter phase, while boiling for 30 minutes was best and at 15% inclusion in the finisher phase. For the processed rice offal- enzyme supplemented experiment, processing rice offal with enzyme supplementation was not necessary in the starter phase whereas, fermented rice offal- enzyme supplemented gave best results in the finisherphaseen_US
dc.identifier.urihttp://hdl.handle.net/123456789/2866
dc.language.isoenen_US
dc.subjectEFFECT,en_US
dc.subjectPROCESSING,en_US
dc.subjectMAXIGRAIN®,en_US
dc.subjectENZYME,en_US
dc.subjectSUPPLEMENTATION,en_US
dc.subjectUTILIZATION,en_US
dc.subjectRICE,en_US
dc.subjectOFFAL,en_US
dc.subjectBROILER CHICKENS.en_US
dc.titleEFFECT OF PROCESSING AND MAXIGRAIN® ENZYME SUPPLEMENTATION ON THE UTILIZATION OF RICE OFFAL BY BROILER CHICKENSen_US
dc.typeThesisen_US
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