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Start date: 2022Subject: search.filters.subject.Growth performance

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Now showing 1 - 6 of 6
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    Utilization of micro-snail Stenothyra species as a co-feed for giant tiger prawn
    (2026-06-01)
    Aue-umneoy, Dusit
    ;
    Pinphoo, Piyarat
    ;
    Thuamsuwan, Worachet
    ;
    Janeauksorn, Kittipong
    ;
    Meethong, Grissada
    Giant tiger prawn (Penaeus monodon) is one of the most commercially important species in global intensive shrimp aquaculture. However, rising fishmeal prices have driven increases in feed costs, prompting some farmers to use lower-quality feeds, which can negatively affect shrimp growth performance. Natural micro-snails, such as Stenothyra sp., have been identified as potential co-feeds for P. monodon. Therefore, this study aimed to investigate the effects of Stenothyra sp. as a co-feed on the growth performance and feed efficiency of P. monodon. Juvenile shrimp were assigned to two treatment groups (n = 20 per group): control (fed artificial pellets) and co-feed (fed artificial pellets supplemented with live micro-snails). The specific growth rate was higher in the co-feed group (8.4 ± 0.11% per day) than that in the control group (7.2 ± 0.34% per day). The final body weight was approximately 61% higher in the co-feed group than that in the control group. Similarly, feed efficiency (119.6 ± 2.73% vs. 77.5 ± 2.90%) and total protein intake (6.8 ± 0.17 g vs. 1.7 ± 0.06 g) were significantly higher in the co-feed group than those in the control group, indicating better feed and nutrient utilization following Stenothyra sp. supplementation. In conclusion, under the tested conditions, providing Stenothyra sp. as a co-feed improved growth performance and feed efficiency in juvenile P. monodon, possibly due to increased total protein intake. Overall, this study presents an innovative co-feeding strategy with potential benefits; however, its broader practical and economic implications require further evaluation.
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    Effects of the different LED light colors on the growth and yield of cos lettuce (Lactuca sativa L. var. longifolia)
    (2024-09-01)
    Sinturat, P.
    ;
    Intrarathed, S.
    ;
    Poungsuk, P.
    The effect of nighttime supplemental lighting using different colored light-emitting diodes (LEDs) on the growth and yield of cos lettuce (Lactuca sativa L. var. longifolia) was investigated. Red LED light significantly enhanced plant height (20.54 cm) compared to other colors and a control group without supplemental light (17.84-19.74 cm). While red light also produced the highest average leaf count (17.25 leaves)It was not statistically different from other light treatments, though it surpassed the control (13.25 leaves). Notably, red LED light was significantly increased in fresh weight yield (83.0 g) and all other treatments which averaged from 49.45 to 73.75 g). These findings demonstrated that the red LED light's superior efficacy to promote the growth and yield of cos lettuce. Practical application of this technology in a field trial through the Future Farmers of Thailand Organization in Phetchaburi province resulted to increase yield of 20%, which accompanied by high participant satisfaction with the potential of cos lettuce production for future careers.
      1
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    Effects of partial substitution of feed with spent coffee grounds on growth performance and carcass quality in broilers
    (2024-03-01)
    Klompanya, A.
    ;
    Mitchaothai, J.
    ;
    Thammakarn, C.
    The research findings found that the spent coffee grounds (SCG) substitution with 5% and 10% in feed (SCG-5 and SCG-10) which exhibited significant (P<0.01) effect on average daily gain with 80.82 and 66.84 g/day as compared to 0% substitution (SCG-0), which 88.62 g/day. While the the affecting on feed conversion ratio was shown in SCG-10 (2.05), which significantly (P<0.01) higher than SCG-5 (1.78) and SCG-0 (1.73). Similar to the carcass quality, SCG-10 was significantly (P<0.01) exhibited lower carcass weight (2,023.38 g) than SCG-5 and SCG-0 (2,267.48 and 2,319.70, respectively). However, there was no significant difference in the percentage of the carcass. Furthermore, substituting SCG in the feed had no impact on the weight of major muscles, such as the breast and thigh muscles. The inclusion of SCG-10 and SCG-5 was significantly increased in liver weight (P<0.05). However, only a high substitution rate of 10% SCG was significantly decreased in abdominal fat (P<0.01) as compared to the inclusion levels of 5% and 0% in the feed. In conclusion, substituting 5% SCG into the feed had shown to be a marginal impact on production efficiency, while a 10% SCG substitution rate distinctly influenced both production efficiency and carcass quality.
      6
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    Effects of commercial feed, mulberry leaves, and mixed feed on growth in apple snails (Pomacea sp.)
    (2023-03-01)
    Srijad, S.
    ;
    Pilapang, K.
    ;
    Dimak, J.
    ;
    Yomla, R.
    This study determined the effects of different feeds on the growth performances of apple snails by using three treatments (commercial feed: CF, mulberry leaves: ML, and mixed feed: MF (commercial feed mixed with mulberry leaves). Apple snails at the age of four-five weeks were an average weight of 0.09 g/snail. These were reared in the CS which managed water circulation twice a day (one-hour morning-evening) and fed feed once an evening-day for 6 weeks. The results showed that the average weight of apple snails (Pomacea sp.) in a closed system (CS) were significantly differed (P<0.05). The highest average weight was found in the MF with 4.3+0.4 g/snail. The CF and ML groups were displayed as 2.5+0.2, and 1.8+0.1 g/snail, respectively. The average length (mm/snail) of the MF group was significantly differed (P<0.05) in the ML and CF groups. These were 23.38±1.13, 24.07±1.14, and 28.12±1.59 of average length (mm/snail) in the ML, the CF, and the MF groups, respectively. The survival rate of apple snails in the CF (91.6±5.0%), ML (99.4±0.7%), and MF (94.5±6.1%) groups was significantly differed (P<0.05) among the ML and the CF groups. The lower FCR was found at 1.16 in the CF group which significantly differed when compared to the ML (1.34) and the MF (1.34) groups. Nutrient contents (protein, fat, fiber, ash, nitrogen-free extract (NFE), calcium, and phosphorus content) were significant differences (P<0.05). The highest protein content and lowest fat content of dried weight found in the ML group were 54.3±0.06% and 3.45±0.18 % respectively. These findings indicated that the easy way to culture apple snails using the commercial feed, and the alternative way to rear apple snails could be used appreciative feeds.
      1
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    The Effect of Acacia mangium Leaf Feed on Apparent Metabolizable Energy, Growth Performance, and Carcass Composition of Broiler Chickens
    (2022-10-01)
    Lerdsuwan, Saichon
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    Nalinanon, Warrapong
    ;
    Pisuttharachai, Duangjai
    The experiments were conducted to determine the apparent metabolizable energy of Acacia mangium leaf meal (AMLM) and the effect on growth performance and carcass composition of broiler chickens (Arbor acres). Twenty-four broiler chickens at the age of 24 days were divided into 2 groups with four replications of two chickens raised individually in a cage. The apparent metabolizable energy of AMLM-feeding chicken was 2,359.90 kcal/kg. Experimental diets consisted of AMLM 0%, 2.5%, 5%, 7.5%, and 10% feeding for 161 one-day-old unsexed broiler chickens and were randomly assigned to five groups with four replications of eight chickens in a completely randomized design. Feed and water were offered ad-libitum throughout the experimental period. At the age of 45 days, 2 broilers per replicate were slaughtered, and the carcass was determined. The results indicated that broiler chickens fed AMLM diets were not significantly different in weight gain, average daily gain and feed intake compared to the control diet (P>0.05). But chickens fed AMLM had decreased feed conversion ratio than the control (P<0.05). In addition, broiler chickens fed AMLM diets were not significantly different in all carcass composition parameters compared to the control diet (P>0.05). It is concluded that the AMLM contained 10% in diets does not affect broiler chickens' growth performance and carcass composition.
      1
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    Effect of Supplementation Yeast Fermented Acacia mangium Leaf in Diets on Growth Performance, Carcass Quality, and Haematology of Climbing Perch (Anabas testudineus)
    (2022-10-01)
    Nalinanon, Warrapong
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    Lerdsuwan, Saichon
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    Pisuttharachai, Duangjai
    A total of 360 juvenile Anabas testudineus of mean weight (2.88 ± 0.02 g/fish) were randomly distributed in triplicate of 20 fish per tank. Acacia mangium leave meal (AM) and yeast-fermented Acacia mangium leave meal (FAM) were used at 0, 2.5, 2.5, 5, 7.5, and 10 % supplemental in the experimental diets. They were fed for 12 weeks to A. testudineus fingerling stocked in 18 plastic tanks (200 liters) set up to recirculation system. Results indicated that the final body weight, weight gain, FCR, SGR, and PER were the best in treatment 4 (FAM 5.0%), significantly different (P < 0.05) from other FAM and AM treatments. There was no significant difference (P > 0.05) in HSI, FR, VSI, L*, a*, and b* across the test diets. The hematological indices' result showed no significant difference(P > 0.05) in hematocrit and red blood cells among the experimental groups. However, the thrombocyte and lymphocyte were significantly different (P < 0.05) in experimental diets FAM 5.0% and FAM 7.5% compared to AM 2.5%, FAM 2.5%, and FAM 10%. The study showed that the inclusion of yeast-fermented Acacia mangium leave meal (FAM) at 5% had the best-enhanced growth performance and feed utilization without any adverse effect on the fish carcass quality and hematological indices.
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