| Titles |
|
English :
|
Effect of phytase supplementation on the utilization of Nigella Sativa seed meal in broiler diets.
|
|
Arabic :
|
تأثير اضافة انزيم الفيتيز على الاستفادة من كسب البركة في علائق بدارى التسمين.
|
|
| Abstract |
The main target of this study was to investigate the efficacy of microbial phytase in improving the utilization of Nigella sativa seed meal as a substitute for soybean meal protein in broiler rations. In this study, a total number of 243 unsexed one day old Arbor Acres (FS) broiler chicks were distributed randomly and divided equally into nine experimental groups (3 levels of Nigella sativa seed meal x 3 levels of microbial phytase). The levels of Nigella 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 (0-3 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 Nigella sativa seed meal revealed that it contains, on air dry basis, 5.59% moisture, 94.41% dry matter (DM), 86.80% organic matter (OM), 31.36% crude protein (CP), 12.27% ether extract (EE), 16.52% crude fiber (CF), 7.61% ash, 26.65% nitrogen free extract (NFE), 1.162% calcium and 0.702% total phosphorus. It also contained 4826 GE and 3408 ME {kcal /kg). It is also a good source of amino acids, the values were less than those in soybean meal but, might satisfy the chicks requirements for essential amino acids, except lysine which was the first limiting amino acid in NSM.
The results showed that Nigella sativa seed meal can be used in broiler diets up to 25% of soybean protein (or 10.7% of the starter diet and 9.47% of the finisher) without any adverse effect on broiler performance.
Moreover, addition of 500 or 1000 FTU phytase / kg diet containing 25% NSM substitution resulted in the best total body weight gain (1964 and 1973 vs. 1928 g., respectively). There was no significant effect on carcass characteristics values due to the treatments. The interaction between NSM level and phytase level had no significant (P?0.05) effect on the nutrients utilization. Increasing phytase level with 25% NSM substitution increased gradually blood Ca level. Generally there were no adverse effects on blood components due to addition of NSM, as well as it had no deleterious effects liver function (as measured by NST activity). Using NSM to substitute 25 or 50% of soybean meal protein, without phytase supplementation or 25% + 500 U phytase, gave the best economic efficiency, where they decreased the total feed cost required to produce 1kg body weight gain by 3.33, 2.50 and 1.25 % of the control (without NSM or phytase ), respectively.
|
| Publication year |
2004
|
| Pages |
143-162
|
| Availability location |
7 شارع نادى الصيد-الدقى(معهد بحوث الانتاج الحيوانى)
|
| Availability number |
|
| Organization Name |
Animal Production Research Institute (APRI)
|
| City |
الاسكندرية
|
| serial title |
Egypt. Poult. Sci.
|
| Department |
Poultry Nutrition Research Department
|
| Author(s) from ARC |
|
| Agris Categories |
Animal feeding
|
AGROVOC
TERMS |
Broiler chickens.
Nigella sativa.
Phytase.
|
| Publication Type |
Journal
|