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Using Cassana plant( Manihot esculanta)in Diet for proiler chick performance in Egypt and Nigeria
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Abstract: 7- SUMMARY
The use of cassava, a multi-purpose plant which grows everywhere in the tropics, as a replacement for yellow corn could help to reduce the cost of production and alleviate the problem of direct competition between livestock and humans for yellow corn. Two experiments were conducted to investigate the effect of replacing yellow corn with cassava root meal (CRM) at 0, 25, 50 and 75 % in grower broiler diets and then in finisher ones containing balanced classic diets according to the recommendations of the NRC (1984) during the first 6 weeks of age.
Two breeds were used: Hubbard classic broiler chicks in experimental (1) and ISA 30 broiler chicks in experimental (2). Two hundred and forty-one day old Hubbard classic unsexed broiler chicks and similar number one day old ISA 30 unsexed broiler chicks were used in the two studies.
Chicks were placed in hold and the total production was divided into growing (1-4 weeks of age) and finishing (4-6 weeks of age) periods. No significant differences were observed in body weight at 28 or 42 days when replacing yellow corn up to 50% CRM in their rations and no harmful hygienic side effects have been observed in broiler chicks fed on mixed cassava root meal diets even to 50% replacement in the two strains of broiler chicks used. The rate of gain of 25% and 50% CRM surpassed that of 0% CRM or the other formed CRM diets. While, incorporating 75% CRM in broiler diets decreased largely compared with the broilers consuming control diet (0% CRM). Thus, seventy five percent addition is not of benefit in poultry production feeding in the two used strains of broiler chicks. Feed consumption decreased gradually with increasing levels of cassava root meal substitution from 25 to 75%.
However, the values were almost similar to the control at 25, 50 % CRM substitution in the two used strains of broiler chicks. On the basis of overall performance of broilers during this study, it may be concluded that CRM can replace yellow corn as the source of energy in growing and finishing diets at levels of 25% and 50% without adverse effect on broiler performance but use 75% CRM replace yellow corn causes adverse effect on broiler performance in the two used strains of broiler chicks.
Digestibility coefficients of most nutrients were decreased gradually with increasing levels of cassava root meal substitution in the two used strains of broiler chicks. Carcass characteristics of slaughtered birds demonstrate no significant effect due to CRM levels on the different parts and organs percentages of broiler chickens in the two used strains of broiler chicks.
No mortality was observed due to treatments during the feeding period in the two used strains of broiler chicks. From nutritional and economical point of view there would be an advantage for CRM to replace yellow corn up to 50% in diets during the period between (1-6 weeks).
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| Publication year |
2007
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| Availability location |
المركز الإقليمي للأغذية والأعلاف - ش جامعه القاهرة - الجيزة
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| Availability number |
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| Organization Name |
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| Country |
Egypt
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| Author(s) from ARC |
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| Proposed Agrovoc |
كتاكيت اللحم;
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| Publication Type |
Master Thesis
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