Sulfuric acid treated date pits as dietary ingredient in tilapia (Oreochromis niloticus) diets [electronic resource].

By: Contributor(s): Language: English Summary language: Arabic Description: p.87-92Other title:
  • نوى البلح المعامل بحمض الكبريتيك كمادة غذائية فى علائق البلطى النيلى(Oreochromis niloticus) [Added title page title]
Uniform titles:
  • Egyptian journal of nutrition and feeds, 2003 v. 6(1) [electronic resource].
Subject(s): Online resources: In: Egyptian Journal of Nutrition and Feeds 2003.v6(1)Summary: Five isonitrogenous (40% CP) and isocaloric (19 MJ/kg) diets were formulated to investigate the utilization of acid treated date pits as carbohydrate source for tilapia fingerlings (Oreochromis ni/oticus). Tilapia with an average body weight of6.61 :t 0.04 g were randomly stocked for 42 days in self-cleaning, fiberglass tanks. Diet 1 (control) contained 30% wheat flour as the main source of carbohydrate. Wheat flour in diets 2 and 4 was replaced by 50% (15% of the total diet) and 100% (30% of the total diet) untreated date pits, respectively. Also, treated date pits replaced 50% and 100% of the wheat flour in diets 3 and 5, respectively. Date pits were immersed in 70% H2 S04 for 30 min. and neutralized to pH 7 by sodium hydroxide. Growth performance, feed conversion ratio and protein productive value were significantly (P<0.05) higher in fish fed diet 3 (15% treated date pits), whereas fish fed diet 4 gave the lowest values (P>0.05). Fish received diets containing treated date pits had better productive performance values than that fed untreated date pits, within the same replacement percentage. Carcass analysis showed significantly (P<0.05) higher dry matter and crude protein content in fish received treated date pits compared to the groups received untreated date pits. The inorganic matter contents were not affected by treatments.
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Five isonitrogenous (40% CP) and isocaloric (19 MJ/kg) diets were formulated to investigate the utilization of acid treated date pits as carbohydrate source for tilapia fingerlings (Oreochromis ni/oticus). Tilapia with an average body weight of6.61 :t 0.04 g were randomly stocked for 42 days in self-cleaning, fiberglass tanks. Diet 1 (control) contained 30% wheat flour as the main source of carbohydrate. Wheat flour in diets 2 and 4 was replaced by 50% (15% of the total diet) and 100% (30% of the total diet) untreated date pits, respectively. Also, treated date pits replaced 50% and 100% of the wheat flour in diets 3 and 5, respectively. Date pits were immersed in 70% H2 S04 for 30 min. and neutralized to pH 7 by sodium hydroxide. Growth performance, feed conversion ratio and protein productive value were significantly (P<0.05) higher in fish fed diet 3 (15% treated date pits), whereas fish fed diet 4 gave the lowest values (P>0.05). Fish received diets containing treated date pits had better productive performance values than that fed untreated date pits, within the same replacement percentage. Carcass analysis showed significantly (P<0.05) higher dry matter and crude protein content in fish received treated date pits compared to the groups received untreated date pits. The inorganic matter contents were not affected by treatments.

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