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Vitamin C Injection during Incubation Period: Effects on Performance, Immune and Antioxidant Function of Broilers

  • LI Shizhao ,
  • ZHI Lihui ,
  • YANG Xiaojun ,
  • YAO Junhu
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  • College of Animal Science and Technology, Northwest A & F university, Yangling 712100, China

Received date: 2013-06-15

  Online published: 2013-11-19

Abstract

This experiment was conducted to investigate the effects of different levels of vitamin C injection during incubation period at 11 embryonic ages on performance, immune and antioxidant function of Sasso broilers. The trial adopted one-factor completely random design. A total of 180 hatching eggs hatched by Sasso broiler breeders were randomly divided into 3 treatments with 4 replicates per treatment and 15 eggs in each replicate. The vitamin C injection was performed at 11 embryonic ages, with the doses of 0 (injecting saline), 3 and 15 mg (with 0.1 mL saline) per egg. After 21 days hatching, 10 healthy chicks with similiar body weight were selected from each replicate and then fed. The feeding period was 42 days. The results showed as follows: 1) compared with the other groups, injecting 3 mg vitamin C significantly increased the hatchability, birth weight, average daily feed intake and feed/gain of broilers aged 1 to 42 days (P<0.05). 2) Injecting vitamin C had no significant effects on spleen index and bursa of Fabricius index of broilers aged 21 and 42 days (P>0.05), but all had a decrease compared with injecting saline group numerically. 3) Vitamin C injection during incubation period had no significant effects on the lymphocyte subset of peripheral blood T lymphocyte of broilers aged 21 and 42 days (P>0.05). 4) Injecting 15 mg vitamin C significantly increased plasma total antioxidant capacity (T-AOC) of broilers aged 21 days compared with injecting 3 mg vitamin C (P<0.05), but there was no significant change compared with injecting saline (P>0.05); and injecting 15 mg vitamin C significantly increased plasma glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD) activities of broilers aged 42 days compared with the other groups (P<0.05). Based on the results of the experiment, it is concluded thats injecting 3 mg vitamin C in hatching eggs at 11 embryonic ages can improve hatchability, birth weight and average daily feed intake of broilers, but decrease feed conversion rate. The antioxidant function may have an increase partly when the dose of vitamin C injection is 15 mg.

Cite this article

LI Shizhao , ZHI Lihui , YANG Xiaojun , YAO Junhu . Vitamin C Injection during Incubation Period: Effects on Performance, Immune and Antioxidant Function of Broilers[J]. Chinese Journal of Animal Nutrition, 2013 , 25(12) : 2998 -3005 . DOI: 10.3969/j.issn.1006-267x.2013.12.029

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