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Using Egyptian Eruca Sativa seed meal in broiler rations with or without mycrobial phytase.
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Abstract: The target of this study was to investigate the efficiency of microbial phytase in improving the utilization of Enca sativa seed meal as a substitute for soybean meal protein in broiler rations. In this study, a total number of 243 one week old unsexed Arbor Acres (FS) broiler chicks were distributed randomly and divided equally into nine experimental group (3 levels of Eruca sativa seed meal x3 levels of microbial phytase) nearly similar in mean live weight. Each group was represented by birds in three replicate pens of 9 chicks each and kept under similar management conditions. The levels of Eruca sativa seed meal were used to substitute 0,25 and 50% of soybean meal protein, while the levels of microbial phytase were 0, 500 and 1000 FTU phytase/kg diet. Two experimental diets were used in the two stages of this study (1-3 and 3-6 weeks of age). The diet contained 23% CP and 3100 Kcal ME/ Kg during the first stage and 20% CP and 3200 Kcal ME/ Kg during the second stage.
The chemical analysis of Eruca sativa seed meal showed that it had good nutritive value as it contained, on air dry basis, 5.07% moisture, 94.93% DM, 79.64% OM, 23.29% CP, 10.05% EE, 18.72% CF, 15.29% ash, 27.58% NFE, 1.198% calcium and 0.394% total phosphorus. It also contained 4237 GE Kcal/kg. The results of this study showed that the best body weight (BW) and body weight gain (BWG) values were for 0 and 25% substitution of soybean protein, while 50% substitution decreased both BW and BWG significantly (P<0.05) when compared to the 0% substitution (without Eruca sativa seed meal). The best final feed conversion value was for 0% Eruca sativa seed meal+1000 FTU phytase /kg (1.74), while the worst one was for 50% Eruca sativa seed meal+500 FTU phytase/ kg (2.11). the high level (50% substitution) of Eruca sativa seed meal level resulted in the worst protein efficiency ratio (2.29), while 0 and 25% gave the best values or more BWG per unit of protein consumed (2.68 and 2.58). Eruca sativa seed meal decreased the percentage of the viability when compared to the control. The values were 99,94 and 93% for 0, 25 and 50% substitution level, respectively.
Both carcass and abdominal fat values were decreased by increasing the Eruca sativa seed meal level. There was no significant difference between the carcass value of the 0% Eruca sativa seed meal diets (71.86%) and 25% Eruca sativa seed meal substitution (71.25%). Increasing the level of Eruca sativa seed meal, decreased the digestibility of DM, OM, CF, NFE and NB%, while improved, significantly, the utilization of EE and CP and, significantly (P<0.05), the utilization of both calcium and phosphorous. Although phytase levels had no significant effect on most of the previous parameters studied, 500U/kg diet phytase appeared to have the best effect on most of the nutrients utilization. There were no adverse effects on blood components due to addition of Eruca sativa seed meal, as well as it had no deleterious effects on liver function (as measured by GOT level). There was a significant increase in serum total lipids due to increasing Eurca sativa seed meal level.
From the economic point of view using Eurca sativa seed meal to substitute 25% of soybean meal protein, without phytase supplementation, gave the best economic efficiency, where it decreased the total feed cost required to produce 1 kg body weight gain by 3% of the control (without Eruca sativa seed meal or phytase). However it is suggested to do further studies on using treated Eruca sativa seed meal to remove the antinutritive components, such as erucic acid and glucosinolate before its incorporation into poultry diets, which may have an effect on improving the viability rate and broiler performance and may enable using higher level than 25% substitution.
Keywords: broiler, eruca sativa, rocket, taramira, phytase, protein source, performance.
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| Publication year |
2003
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| Pages |
97-114
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| Availability location |
7 شارع نادى الصيد-الدقى(معهد بحوث الانتاج الحيوانى)
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| Availability number |
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| Organization Name |
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| City |
القاهرة
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| serial title |
Egyptian J. Nutrition and Feed.
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| Department |
Poultry Nutrition Research Department
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Broiler chickens.
Eruca sativa.
Performance testing.
Phytase.
Proteins.
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| Publication Type |
Journal
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