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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.18.0962    [Accepted] Published online March 7, 2019.
Effects of dietary yeast beta-1,3-1,6-glucan on growth performance, intestinal morphology and chosen immunity parameters changes in Haidong chicks
Baoan Ding1,*, Juanshan Zheng1, Xiezhong Wang2, Licheng Zhang2, De Sun3, Quanhu Xing3, Andrea Pirone4, Baldassare Fronte4
1State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
2Animal Disease Prevention and Control Center of Qinghai Province, Xining 810001, China
3Animal Husbandry and Veterinary Station of Huzhu County of Qinghai Province, Huzhu 810500, China
4Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, 56124, Pisa, Italy
Correspondence:  Baoan Ding,Email: dingbaoan1967@aliyun.com
Received: 19 December 2018   • Revised: 30 January 2019   • Accepted: 21 February 2019
This study investigated the effects of 1,3-1,6 beta-glucan added to the diet of Haidong chicks reared under hypoxic conditions, to ascertain the growth performances, immunity and intestinal morphology changes. Methods: A total of 750 chicks were divided into five groups and fed diets containing 0.5g/kg, 1.0g/kg and 2.0g/kg 1,3-1,6 beta-glucan from yeast (G1, G2, G3, respectively), 0.2g/kg Taylor rhizomorph (T) and a control feed (C).
The body weight and body weight gain was higher in chicks fed 1,3-1,6 beta-glucan and Taylor rhizomorph than in control group. Feed conversion ratio significantly differed for G2 and G3 groups in comparison to control group. The relative weight of bursa was higher in G1, G2 and G3 groups. The white blood cells and lymphocytes were significantly increased in groups fed 1,3-1,6 beta-glucan. The IgG of serum peak appeared in the G3 group. The villous height of the duodenum was higher in 1,3-1,6 beta-glucan feed groups. In the jejunum, the villous height was higher in G2 and G3 groups and crypt depth for all the groups fed β-glucan;. At ileum level the villous height and crept depth was higher for groups G1, G2 and G3.
The growth performance of Haidong chicks is improved when 10 and 20 g/kg 1,3-1,6 beta-glucan is included in the diet; hence, it is suggested to diet include 1,3-1,6 beta-glucan in poultry diet to reduce and replace the use of antibiotics.
Keywords: Body Growth; Haidong Chicks; Intestine Morphology; Yeast; Dietary Beta-glucan

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