Apparent Digestibility of Nutrients in Six Types of Carbohydrate Ingredients for Tilapia (Oreochromis niloticus)

SUN Yuping; HUANG Yanhua; CAO Junming; WANG Guoxia; HU Junru; CHEN Bing; HE Fei; QIU Jinmu

doi:10.3969/j.issn.1006-267x.2015.11.031

Chinese Journal of Animal Nutrition >

2015 , Vol. 27 >Issue 11: 3577 - 3586

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.11.031

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Apparent Digestibility of Nutrients in Six Types of Carbohydrate Ingredients for Tilapia (Oreochromis niloticus)

SUN Yuping ,
HUANG Yanhua ,
CAO Junming ,
WANG Guoxia ,
HU Junru ,
CHEN Bing ,
HE Fei ,
QIU Jinmu

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1. Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
2. Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China;
3. Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China;
4. Guangzhou Fishtech Aquactic Sciences Co., Ltd, Guangzhou 510640, China

Received date: 2015-05-16

Online published: 2015-11-21

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Abstract

This study was conducted to investigated the apparent digestibility of nutrients in six types of carbohydrate ingredients for tilapia (Oreochromis niloticus). The six types of carbohydrate ingredients included southern brown rice, wheat middling, corn starch, potato starch, sweet potato starch and cassava starch. The experimental diets were all consisted of 70% basal diet and 30% test feed ingredients, and added 0.04% yttrium oxide (Y₂O₃) as an exogenous indicator. A total of 420 genetic improvement of farmed tilapia with an initial average body weight of (35.05±0.62) g were randomly divided into seven groups with three replicates per group and 20 fish per replicate. The fish in control group were fed the basal diet, and the fish in other six groups were randomly fed one of six test diets. After one week feeding with trial diets, the fecal samples were collected by siphon method, and then the apparent digestibility of gross energy, dry mater, ash matter, crude protein, crude lipid, and starch and total saccharides was determined. The results showed that the apparent digestibility of gross energy, dry mater, ash matter, crude protein, crude lipid, and starch and total saccharides in the six types of carbohydrate ingredients were 33.89% to 90.85%, 31.50% to 88.01%, 7.73% to 64.37%, 95.74% to 114.38%, 97.63% to 111.51% and 21.49% to 79.73%, respectively. In the six types of carbohydrate ingredients, the apparent digestibility of gross energy, dry matter, crude protein, and starch and total saccharides in corn starch was higher than that in other ingredients, and the following was southern brown rice, however, the lowest was found in potato starch. The apparent digestibility of dry matter, and starch and total saccharides existed no significant difference between corn starch and southern brown rice (P>0.05). And the apparent digestibility of gross energy, dry mater, crude protein, and total starch and saccharides in the six types of carbohydrate ingredients had the same tendency with that of the six test diets, the higher was found in corn starch and southern brown rice, and the lower was found in potato starch and sweet potato starch. In conclusion, different sources of carbohydrate led to different apparent digestibility of nutrients for tilapia. The corn starch and southern brown rice are high quality carbohydrate sources for tilapia, and they can be better used in actual feed production to reduce costs. However, potato starch and sweet potato starch should be used less in tilapia actual feed production for its lower apparent digestibility, especially the lower available total starch and saccharide.

Key words： tilapia (Oreochromis niloticus); carbohydrate; nutrient; apparent digestibility

Cite this article

SUN Yuping , HUANG Yanhua , CAO Junming , WANG Guoxia , HU Junru , CHEN Bing , HE Fei , QIU Jinmu . Apparent Digestibility of Nutrients in Six Types of Carbohydrate Ingredients for Tilapia (Oreochromis niloticus)[J]. Chinese Journal of Animal Nutrition, 2015 , 27(11) : 3577 -3586 . DOI: 10.3969/j.issn.1006-267x.2015.11.031

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