| Titles |
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English :
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Response of growing rabbits to barley radicel diets supplemented with commercial enzymes
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| Abstract |
The main target of this study was to evaluate barley radicel as an un traditional feedstuff supplemented with or without enzymes in growing rabbit diets. In this study two levels of radicel (15 and 20% of the diet) in addition to the control diet (without radicel) were used. Each level of radicel was fed without enzyme, with two sources of commercial enzyme mixtures; Kemzyme (at 1 g/kg diet) or Prismazym Veg (at 2 g/kg diet). Accordingly, a total of 7 experimental diets (2 levels of radicel x 3 treatments), in addition to the control (without radicel) were used. A total of fifty six New Zealand White (NZW) x Californian (Cal)-5 week old rabbits, with an average initial body weight of ~ 660 g were evenly sexed, weighted, individually caged and distributed among 7 experimental groups of 8 rabbits, each. All rabbits were grown under similar managerial and hygienic conditions. All diets were formulated to be isocaloric and isonitrogenous (17% CP and ~2600 kcal DE /Kg diet).
The results of this study showed that the best numerically values of body weight, body weight gain and European production efficiency index were for 15% radicel without enzymes during the total experimental period (5-13 weeks of age) as compared with the control (without radicel). The best feed conversion (FC) value (3.80) was for the control followed by 15% radicel without enzyme supplementation (3.95), while the worst value was for 20% R+E2 (4.43). Carcass characteristics were not affected significantly (P<0.05) by the factors (radicel level or enzyme supplementation) or any of the treatments. The carcass values were ranged between 46.87-49.53% of live body weight.
When the control diet (without radicel) was included in the comparison, 20% R+E1 resulted in the highest (P<0.05) digestion coefficient values for all the nutrients, except EE, where the highest numerically values were for both 20% R+E1 and 15% R+E1. The digestion coefficient values of NFE were increased significantly (P>0.05) for 20% radicel, especially when enzymes (E1 or E2) were added.
From economic point of view, 15% and 20% radicel without enzyme supplementation gave very close values to the control, while addition of enzymes (El or E2) to 15 or 20% radicel gave higher cost of feed/kg body weight gain, lower economic efficiency and relative economic efficiency as compared with the control. Therefore, it's recommended to use 15% or less radicel without enzymes supplementation (El or E2) in rabbit diets to obtain best performance and economic efficiency.
Keywords: Radicel, malt sprouts, untraditional feedstuffs, enzymes, performance.
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| Publication year |
2007
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| Pages |
34-35
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| Availability location |
معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
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| Availability number |
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| Organization Name |
Animal Production Research Institute (APRI)
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| City |
الغردقة
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| serial title |
Abstract Of the 5th International Conference On Rabbit Production In Hot Climate
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Enzymes.
Performance testing.
Rabbits.
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| Proposed Agrovoc |
barley radicel;untraditional feedstuffs;malt sprouts;
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| Publication Type |
Conference/Workshop
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