Physicochemical modifications of dietary palm kernel meal affect growth and feed utilization of Nile tilapia (Oreochromis niloticus)

Thongprajukaew, Karun; Rodjaroen, Somrak; Tantikitti, Chutima; Kovitvadhi, Uthaiwan

doi:10.1016/j.anifeedsci.2015.01.010

Cited by 12 publications

(12 citation statements)

References 31 publications

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“…IVD values depend on the quality of feedstuffs rather than their quantity [ 30 , 45 , 46 ]. IVD has been used to screen for suitable feedstuffs to feed fish.…”

Section: Discussionmentioning

confidence: 99%

Ontogenic Development of Digestive Enzymes in Mealworm Larvae (Tenebrio molitor) and Their Suitable Harvesting Time for Use as Fish Feed

Rodjaroen

Thongprajukaew

Khongmuang

et al. 2020

Insects

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Mealworm larvae (Tenebrio molitor) are edible insects consumed in feed and food. In the current study, the optimal harvesting time of mealworm larvae for use as aquafeed was investigated during the ages of 30–90 days after hatching (DAH). Development of digestive enzymes, proximate composition, and in vitro protein digestibility using digestive enzymes from African catfish (Clarias gariepinus) and Nile tilapia (Oreochromis niloticus), were used as criteria. The specific activities of pepsin and trypsin significantly decreased with age (p < 0.05) from the first harvesting time until 50 and 45 DAH, respectively, while steadiness in these enzyme activities was observed onwards. Chymotrypsin specific activity appeared constant across all harvesting times. The specific activity of amylase significantly decreased in the later stages of development, while cellulase exhibited a different pattern suggesting it has a major role in dietary fiber utilization relative to starch. Regarding proximate compositions of the mealworm larvae, the moisture and ash contents decreased significantly with age, while the protein content exhibited the opposite trend with the highest contents from 60 to 90 DAH. Crude lipid was generally fairly constant, but its lowest value was observed in the earliest stage. In vitro protein digestibility was not significantly different across all harvesting times for both fish species, except for the significantly decreased digestibility value at 65 DAH relative to 30 and 35 DAH for Nile tilapia. However, based on the economic benefits of time for growth increment and proximate chemical composition, approximately 60 DAH is proposed as suitable for harvesting mealworm larvae to be used in fish feed.

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“…IVD values depend on the quality of feedstuffs rather than their quantity [ 30 , 45 , 46 ]. IVD has been used to screen for suitable feedstuffs to feed fish.…”

Section: Discussionmentioning

confidence: 99%

Ontogenic Development of Digestive Enzymes in Mealworm Larvae (Tenebrio molitor) and Their Suitable Harvesting Time for Use as Fish Feed

Rodjaroen

Thongprajukaew

Khongmuang

et al. 2020

Insects

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“…Based on a same‐species comparison, fish fed with steamed microwave‐irradiated feed, mechanically pelleted with a meat mincer (SGR 2.15% day −1 ), appeared to demonstrate superior growth performance compared with fish fed with feed containing 200 g kg −1 microwave‐irradiated palm kernel meal (SGR 1.98% day −1 ) (Thongprajukaew, Rodjaroen, Tantikitti & Kovitvadhi ) or feed containing 200 g kg −1 pre‐extruded maize flour (SGR 2.08% day −1 ) (Amirkolaie et al . ).…”

Section: Discussionmentioning

confidence: 99%

Microwave irradiation and pelleting method affected feed chemical composition and growth performance and feed utilization of sex-reversed Nile tilapia, Oreochromis niloticus (L.)

et al. 2016

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Microwave processing and pelleting methods were assessed to improve aquafeed quality for sexreversed Nile tilapia. The 2 9 3 experimental feeds were prepared with and without microwave irradiation of ingredients prior to pelleting with either a meat mincer, extruder or steam conditioner followed by a meat mincer. Five feedstuff ingredients, including fish meal, meat and bone meal, soybean meal, broken rice and rice bran, were irradiated separately at optimal times, according to the thirdorder polynomial regression analysis between in vitro digestibility and microwave irradiation times (r = 0.681-0.942, P < 0.001, n = 42). The prepared feeds were studied for chemical compositions and responses in fish growth performance and feed utilization efficiency. The fish (1.57 AE 0.01 g initial weight) were fed ad libitum for 4 months. All proximate chemical compositions of experimental feeds, except protein, were influenced by microwave processing, pelleting methods or their interaction (P < 0.05). There were no significant effects from either parameter on water quality during the fish trial. Fish fed steamed microwave-irradiated feed, mechanically pelleted with a meat mincer, showed the highest growth performance (weight gain 18.91 AE 0.73 g and specific growth rate 2.15 AE 0.26% day À1 ) and feed utilization efficiency (feed conversion ratio 1.31 AE 0.05 g feed g gain À1 and protein efficiency ratio 2.27 AE 0.08 g gain g protein À1 ) compared with the other dietary groups. These findings indicate that microwave irradiation of feed ingredients prior to steam conditioning followed by mincing can improve aquafeed production quality.

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“…The chemical and mineral compositions of PKC are shown in Table 1. With such composition, many studies have been carried out regarding the inclusion of PKC in animal feed (Thongprajukaew et al, 2015;Vibart et al, 2017;Alshelmani et al, 2017;Huang et al, 2018). According to Alimon (2004), PKC is one of the most flexible feed ingredients, since it can be used in all types of animal rations, consequently reducing conventional feedstuffs importation.…”

Section: Mechanical Pressing Extractionmentioning

confidence: 99%

Obtainment, applications and future perspectives of palm kernel

Costa¹,

Lima²,

Bezerra³

et al. 2019

Afr. J. Biotechnol.

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Of African origin and with an estimated world production of 6.85 million tons, palm kernel oil contributes about 3% of the total world production of oils and fats. With such production, the world waste generation was about 10,026 × 10 3 tons in 2017, which represents an important environment issue. The present work aimed to review the literature on the main methods of extraction, applications, and future perspectives of Elaeis guineensis Jacq., with emphasis on its seed: palm kernel. Regarding its main applications, biodiesel production was highlighted, since the biomass generated can be used as a substitute for fossil fuels in energy production.

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Physicochemical modifications of dietary palm kernel meal affect growth and feed utilization of Nile tilapia (Oreochromis niloticus)

Cited by 12 publications

References 31 publications

Ontogenic Development of Digestive Enzymes in Mealworm Larvae (Tenebrio molitor) and Their Suitable Harvesting Time for Use as Fish Feed

Ontogenic Development of Digestive Enzymes in Mealworm Larvae (Tenebrio molitor) and Their Suitable Harvesting Time for Use as Fish Feed

Microwave irradiation and pelleting method affected feed chemical composition and growth performance and feed utilization of sex-reversed Nile tilapia, Oreochromis niloticus (L.)

Obtainment, applications and future perspectives of palm kernel

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