Non-gelatinized corn supplemented with alpha-amylase at sub-optimum protein level enhances the growth of Labeo rohita (Hamilton) fingerlings
| Autor: | Subhas C Mukherjee, Dharitri Choudhury, Asim K. Pal, Narottam Prasad Sahu, Shivendra Kumar |
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| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Aquaculture Research. 37:284-292 |
| ISSN: | 1365-2109 1355-557X |
| DOI: | 10.1111/j.1365-2109.2005.01434.x |
| Popis: | A feeding trial was conducted for 60 days to delineate the effect of both gelatinized and non-gelatinized corn with or without supplementation of exogenous α-amylase at two level of protein 35% (optimum) and 27% (sub-optimum) on growth, tissue composition and protein sparing effect of carbohydrate in the diet of Labeo rohita fingerlings. Three hundred and sixty fingerlings (average weight 10.00±0.15 g) were randomly distributed in 12 treatment groups with two replicates for each. Twelve semi-purified diets containing either 35% or 27% CP were prepared with different levels of α-amylase (0, 50, 100 and 150 mg kg−1) and starch type [gelatinized (G)/non-gelatinized, (NG)] viz. T1 (NG, 35% CP, 0 mg kg−1α-amylase), T2 (G, 35% CP, 0 mg kg−1α-amylase), T3 (NG, 27% CP, 50 mg kg−1α-amylase), T4 (NG, 35% CP, 50 mg kg−1α-amylase), T5 (G, 27% CP, 50 mg kg−1α-amylase), T6 (G, 35% CP, 50 mg kg−1α-amylase), T7 (NG, 27% CP, 100 mg kg−1α-amylase), T8 (NG, 35% CP, 100 mg kg−1α-amylase), T9 (G, 27% CP, 100 mg kg−1α-amylase), T10 (G, 35% CP, 100 mg kg−1α-amylase), T11 (NG, 27% CP, 150 mg kg−1α-amylase) and T12 (NG, 35% CP, 150 mg kg−1α-amylase). The fish were acclimatized to the experimental condition for 24 days during which control diet (NG, 35% CP) was fed. Weight gain percentage, specific growth rate, protein efficiency ratio and apparent net protein utilization of NG corn-fed groups at 42.43% were significantly higher (P |
| Databáze: | OpenAIRE |
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