Replacement of fish meal by fish protein hydrolysate in red-tail catfish (hemibagrus wyckioides) diet

การทดแทนปลาป่นด้วยโปรตีนไฮโดรไลเซทจากปลาในอาหารปลากดคัง

Name: Khambou Tayyamath

ThaSH: Fishes -- Food

Classification :.DDC: 636.0855

ThaSH: Animal feeding

ThaSH: Feeds

Abstract: The present experiment is devoted to exploit the impact of replacing fishmeal by fish protein hydrolysates on the rearing performance of red-tail catfish. Fish Protein Hydrolysate (FPH) is a conversion product of seafood waste, which includes head, skin, trimmings, fins, frames, viscera and roes from industrial processing. FPH is a nutritional supplement, which bioactive compounds more easily can be absorbed and stimulate feed intake and growth performance of fish under rearing. The experiment was designed as completely randomized comparison with 4 treatments and 3 replications each. The treatments refer to the 4 experimental diets with increased replacement of fishmeal by protein hydrolysate(FPH): 0 (FPH0), 50g/kg or 16.67% (FPH50), 100 g/kg or 33.33% (FPH100) and 150 g/kg or 50% (FPH150) pelleted compound food. Each treatment diet was standardized at 32% crude protein. A total of 720 red-tail catfish juveniles with an average initial body weight of 5.45 ±0.05 g were reared for 14 weeks in a circulating water system at an approximate temperature of 26±1◦C. Data on growth performance and food consumption were recorded for all fish at 14 days interval. At the end of experiment a random sample of 5% fish per treatment group were slaughtered for measuring parameters of carcass and meat quality. In addition blood samples of another 5% of fish per treatment were collected for evaluating the immune response by measuring the lysozyme activity. With a specific growth rate of 2.79 – 2.86 % in the different feeding groups the fish obtained a remarkable growth development within the 14 weeks rearing phase from 5.5 – 87.8g average body weight. The high survival rate indicated by only 2 fish lost out of a total of 720 underline an unbroken development of the fish throughout the experimental phase. There was a clear growth advantage to be observed for the treatment groups with replacing fishmeal by 100g FPH and more. The total weight gain (WG) of the feeding groups FPH100 and FPH150 exceeded the 84.72g final weight of the control group by 6.79g and 5.49g or 8.01% and 6.48% respectively. Thus feeding more than 100 g FPH/kg mixed food did not yield any additional effect. The values of the other parameters studied e.g. average daily gain(ADG), specific growth rate (SGR), feed conversion ratio (FCR), protein efficiency ratio(PER) are corresponding to the growth performance. The measured values for the FPH100 feeding group versus the control group were: ADG 0.88 vs. 0.81g/d; SGR 2.86 vs. 2.79%/d; FCR 1.71 vs. 1.79 and PER 1.87 vs. 1.74. The higher growth performance of the FPH100 feeding group resulted from a higher feed intake of 147.8g/d versus 141.6g/d in the control group. All differences are highly significant at p <0.05. Regarding the carcass and meat quality higher final body weight of the fish in the feeding groups with replacing fishmeal by 100g FPH and more resulted in slightly higher fillet yield and weight of liver and viscera. Noticeably is the significantly (p<0.05) reduced deposition of lipids in the body cave with 2.56% for the FPH100 and FPH150 groups versus 2.92% for the control. This lower lipid deposition for the FPH diets also is to be observed in internal muscle fat, which is reduced from 13.2% to 10.6% independent from the FPH level applied. The outer meat characteristics were little affected except the color measurements, tending to darker more bluish appearance especially of the skin from FPH fed fish. The lysozyme activity measured in the blood serum of the fish at the experimental end were fairly low in comparison to other studies but show a gradual increase with increased FPH in the diet, ranging from 2.27 to 2.42 µg/ml. In conclusion, for ensuring better growth performance, higher body weights, better carcass percentage with low muscle fat, the supplement of 33.33% of the rearing diet of red-tail catfish by fish protein hydrolysates can be clearly recommended.

Chiang Mai University Library

Address: Chiang Mai

Email: cmulibref@cmu.ac.th

Name: Wisanuporn Ratanatrivong

Role: Chairman

Name: Kesinee Gatphayak

Role: Member

Name: Mintra Seel-audom

Role: Member

Name: Wanaporn Tapingkae

Role: Member

Name: Hans-Jurgen Langholz

Role: Member

Created: 2017

Modified: 2019-12-25

Issued: 2019-12-25

วิทยานิพนธ์/Thesis

application/pdf

CallNumber: Th 636.0855 K45R 2017

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Animal Science

Grantor: Chiang Mai University

©copyrights Chiang Mai University

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