Aquaculture Nutrition

Nutrient Apparent Digestibility in Seven Feed Ingredients for Two-Year-Old Black Carp (Mylopharyngodon piceus Richardson)

  • MING Jianhua ,
  • YE Jinyun ,
  • ZHANG Yixiang ,
  • XIE Jun ,
  • YANG Xia ,
  • SHAO Xianping
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  • 1. College of Life Sciences, Huzhou University, Huzhou 313000, China;
    2. Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China

Received date: 2013-08-07

  Online published: 2013-12-24

Abstract

This experiment was conducted to determine the apparent digestibility of dry matter (DM), crude protein (CP), ether extract (EE), total phosphorus (TP), gross energy (GE) and amino acids (AA) in domestic fish meal, maggot meal, corn gluten meal, soybean meal, peanut meal, cottonseed meal and rapeseed meal for two-year-old black carp (Mylopharyngodon piceus Richardson). The experimental diets were consisted of 70% basal diet and 30% test feed ingredients, and added 0.5% Cr2O3 as a exogenous indicator. Two hundred and sixteen two-year-old black carp with an average body weight of (190.98±1.81) g were randomly divided into 8 groups with 3 replicates in each group and 9 fish in each replicate. The fish in control group were fed a basal diet, and those in experiment groups were randomly fed one of seven test diets. The fecal samples were collected by abdominal pressure method after feeding one week. The results showed that the ranges of apparent digestibility of DM, CP, EE, TP, GE and total AA in seven feed ingredients were 61.68% to 84.42%, 81.44% to 93.49%, 64.41% to 97.38%, 39.94% to 78.74%, 70.47% to 89.52% and 83.57% to 96.42%, respectively. In the seven feed ingredients, the highest apparent digestibility of DM and TP was found in corn gluten meal, while soybean meal had the highest apparent digestibility of CP, EE, GE and total AA; the lowest apparent digestibility of DM, TP and GE was found in cottonseed meal, and the CP in maggot meal and EE in corn gluten meal had the lowest apparent digestibility. The apparent digestibility of CP was consistent with that of total AA in the seven feed ingredients, and the cottonseed meal and maggot meal had the lower apparent digestibility of CP and total AA. In conclusion, soybean meal shows the best utilization effects for two-year-old black carp, followed by peanut meal and domestic fish meal, and both of them have the same apparent digestibility. Corn gluten meal and rapeseed meal are also good plant protein sources for two-year-old black carp, and proper supplemental amount of them can reduce feed costs. While, the apparent digestibility of CP and total AA is lower in cottonseed meal and maggot meal, which should be controlled in feed for two-year-old black carp.

Cite this article

MING Jianhua , YE Jinyun , ZHANG Yixiang , XIE Jun , YANG Xia , SHAO Xianping . Nutrient Apparent Digestibility in Seven Feed Ingredients for Two-Year-Old Black Carp (Mylopharyngodon piceus Richardson)[J]. Chinese Journal of Animal Nutrition, 2014 , 26(1) : 161 -169 . DOI: 10.3969/j.issn.1006-267x.2014.01.021

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