Molecular Nutrition

Appropriate Dietary Pantothenic Acid Level for Apis mellifera ligustica Worker Bee Larvae

  • LEI Chunhong ,
  • MA Lanting ,
  • WANG Hongfang ,
  • XU Baohua
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  • College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271018, China

Received date: 2016-06-13

  Online published: 2016-12-17

Abstract

The objective of this experiment was to research the influences of dietary pantothenic acid level on development, body antioxidant function and the expressions of CoA synthesis related enzyme genes for Apis mellifera ligustica worker bee larvae, and to find the appropriate dietary pantothenic acid level in this stage. A total of 1 800 one-day-old Apis mellifera ligustica worker bee larvae were randomly assigned to 5 groups with 3 replicates per group and 120 larvae per replicate. Larvae in 5 groups were fed with experimental diets with 0.92, 1.22, 1.52, 1.82 and 2.12 mg/g (measured values) pantothenic acid until pupate, respectively. The body weight, body composition, haemolymph biochemical indices, antioxidant indices and the relative expression levels of CoA synthesis related enzyme genes of 5- and 7-day-old larvae were measured, and then the pupation and eclosion rates were calculated. The results showed as follows:1) pantothenic acid supplementation could significantly increase the fresh weight, dry weight and ether extract (EE) content of larvae (P<0.05), and eclosion rate in 2.12 mg/g group was significantly higher than that in other groups (P<0.05). 2) Dietary pantothenic acid level had significantly influences on total protein (TP), total cholesterol (TCHO), high density lipoprotein (HDL) and low density lipoprotein (LDL) contents in haemolymph of 5-day-old larvae (P<0.05), meanwhile, they reached the minimum in 1.82, 1.82, 1.22 and 1.52 mg/g groups, respectively. 3) The total anti-oxidant capacity (T-AOC) of 5-and 7-day-old larvae was significantly increased with the dietary pantothenic acid level increasing (P<0.05), as well as the superoxide dismutase (SOD) activity of 5-day-old larvae. 4) Dietary pantothenic acid level significantly influenced the relative expression levels of pantothenate kinase 4 (PANK4) and phosphopantothenoylcysteine decarboxylase (PPCDC) of 5-day-old larvae (P<0.05), and both of them reached the maximum in 1.52 mg/g group. Considering dry weight and eclosion rate of 5-day-old larvae to make fitting curves, the appropriate dietary pantothenic acid level for Apis mellifera ligustica worker bee larvae is 1.85 to 2.01 mg/g.

Cite this article

LEI Chunhong , MA Lanting , WANG Hongfang , XU Baohua . Appropriate Dietary Pantothenic Acid Level for Apis mellifera ligustica Worker Bee Larvae[J]. Chinese Journal of Animal Nutrition, 2016 , 28(12) : 3846 -3855 . DOI: 10.3969/j.issn.1006-267x.2016.12.017

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