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  • 1
    Electronic Resource
    Electronic Resource
    Replacing dietary corn with barley seeds in Nile tilapia, Oreochromis niloticus (L.), feed (1999)
    Oxford, UK : Blackwell Science Ltd
    Aquaculture research 30 (1999), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Four isocaloric–isonitrogenous rations containing 0%, 15%, 30% and 51% of ground barley seeds as a replacement for dietary corn were fed to three replicate groups of Oreochromis niloticus (Linnaeus) fingerlings with a mean initial weight of 3.5 g. The randomly selected fish were tested for 9 weeks in 60 L circular tanks. Each tank was considered as an experimental unit. The tanks were put together in a water recirculating system using filtered and aerated ground well water (24 ± 3 °C). Tilapia weight gain, feed conversion, specific growth rate and protein efficiency ratio were similar in fish fed diets containing 15% and 30% barley and were superior to those fed diets containing 0% control and 51% barley. There were no differences between tilapia fed diets containing 0% and 51% barley. Body moisture, crude fat, crude protein and total ash did not change as the level of barley in the feeds was increased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2109.1999.00323.x
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  • 2
    Electronic Resource
    Electronic Resource
    Replacing dietary starch with pitted date fruit in Nile tilapia Oreochromis niloticus (L.) feed (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 28 (1997), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Four isocaloric-isonitrogenous rations containing various levels (0%, 15%. 30% and 45%) of wasted date as a replacement for starch were fed to three replicate groups of Oreochromis niloticus (Linnaeus) fingerlings with a mean initial weight of 2.5 g.Ten randomly selected fish were tested for 9 weeks in 60-1 circular tanks. Each tank was considered as an experimental unit. The tanks were put together in a flow-through system utilizing filtered and aerated ground or well water (24 ± 3°C). Tilapia weight gain, feed conversion, specific growth rate and protein efficiency ratio were improved with diets containing date (15%, 30% and 45%) as compared with the starch diet (0% date diet). The diet containing 30% date was superior to all other test diets in terms of all the above growth parameters. Body moisture, crude protein and total ash were gradually increased as the level of date in the feeds was increased, while body fat was reduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2109.1997.00872.x
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  • 3
    Electronic Resource
    Electronic Resource
    Replacing fish meal with chicken offal silage in commercial Oreochromis niloticus (L.) feed (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 26 (1995), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Four isocaloric isonitrogenous rations containing various levels (0,10, 15 and 20%) of chicken offal silage as a replacement for fish meal were fed to three replicate groups of Oreochromis niloticus (L.) fingerlings with a mean initial weight of 10.8g. Ten fish per tank were tested for 5 weeks in 40-1 aquaria. The aquaria were put together in a flow-through system utilizing underground water (24 ± 3°C). Weight gain, feed conversion, protein efficiency ratio and proximate body composition did not vary significantly between treatments. These results indicate that, on an isocaloric/ isonitrogenous basis, chicken offal silage can make up as much as 20% of O. niloticus commercial feed as a replacement for fish meal without any effect on growth or proximate body composition under the experimental conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1995.tb00879.x
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  • 4
    Electronic Resource
    Electronic Resource
    Replacing palm oil for soybean oil in tilapia, Oreochromis niloticus (L.), feed (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 27 (1996), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Four isonitrogenous and isocaloric semi-purified feeds containing various levels of palm oil (0,1, 2 and 3%) as a replacement for soybean oil were fed to three replicate groups of tilapia, Oreochromis niloticus (L.), fingerlings, mean initial weight 5.5 g, in 45-l aquaria for 5 weeks under controlled laboratory conditions. Weight gain, feed conversion ratio, protein efficiency ratio and the chemical composition of the fish bodies did not vary significantly (P 〉 0.05). These results indicate that palm oil could replace soybean oil in feeds for O. niloticus fingerlings without any negative effect on the fish growth or body composition under these conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1996.tb00988.x
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  • 5
    Electronic Resource
    Electronic Resource
    Substitution of soybean meal and oil for fish meal in practical diets fed to channel catfish, Ictalurus punctatus (Rafinesque): effects on body composition (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 26 (1995), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Three isonitrogenous and isocaloric rations containing various levels of commercially dehulled soybean meal as replacement for menhaden fish meal were fed to four replicate groups of channel catfish, Ictalurus punctatus (Rafinesque), fingerlings, mean initial live weight 13. 7 g, in 0.4-ha earthen ponds for 114 days. As fish meal was removed from the experimental diets, vegetable fat, soybean meal, and inorganic phosphorus were increased to maintain 35% crude protein, 11. 7 Mj of digestible energy (DE) per kg, and a minimum of 0.45% available phosphorus.The percentage of the whole body weight made up of dressed carcass, head, skin and viscera did not vary significantly among dietary treatments. Average values for dressed carcass, head, skin and viscera were 60.8%, 20.8%, 6.7% and 9.7%, respectively.The chemical composition of the various body parts was not significantly affected by diet. Average fat percentages for dressed carcass, head, skin, and viscera were 8.2%, 7.3%, 16.0% and 26.4%, respectively. Average protein percentage were 15.7%, 14.9%, 22.2% and 11.4%, respectively.These results indicate that varying the percentage of fat added to a practical catfish diet from 0% to 3.8%, but holding the DE constant, will not affect dressing percentage or body composition of the fed fish.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1995.tb00894.x
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