Molecular Nutrition

Effects of Complex Organic Trace Elements on Growth Performance and Trace Element Contents of Feces of Chongren Chickens

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  • Institute of Animal Husbandry and Veterinary Science, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China

Received date: 2017-09-06

  Online published: 2018-03-05

Abstract

This research was conducted to explore the effects of complex organic trace elements at different levels replacing inorganic trace elements on growth performance and trace element contents of feces of Chongren chickens. Two hundred and fifty six 28-day-old Chongren chickens (males and female in half) with similar initial body weight were randomly divided into 4 groups with 4 replicates per group and 16 chickens per replicate. The chickens in control group (group Ⅰ, standard level inorganic group) were fed the diets supplemented with 80 mg/kg Fe, 8 mg/kg Cu, 80 mg/kg Mn and 60 mg/kg Zn in inorganic salt. The others in groups Ⅱ to Ⅳ were fed the diets supplemented with complex organic trace elements at 50%, 75% and 100% replacing inorganic trace elements, respectively. The other nutrient levels were the same in all groups. The pre-test lasted for 7 days, and the experiment lasted for 28 days. The results showed as follows:1) there were no significant differences in average daily gain, average daily feed intake and the ratio of feed to gain of Chongren chickens in all groups (P>0.05). 2) Compared with control group, the content of serum urea nitrogen of Chongren chickens in groups Ⅱ, Ⅲ and Ⅳ was significantly decreased (P<0.05), and the activities of alkaline phosphatase and 5'-nucleotidase in serum in groups Ⅲ and Ⅳ were significantly increased (P<0.05). 3) There were no significant differences in the contents of Fe and Cu of feces of Chongren chickens in all groups (P>0.05). Compared with control group, the contents of Zn and Mn of feces of Group Ⅱ were significantly decreased (P<0.05). According to the results, dietary 50% complex organic trace elements replacing inorganic trace elements can obtain the better effects of decreasing the contents of Cu, Fe, Zn and Mn of feces without affecting growth performance of chickens.

Cite this article

SONG Qiongli, CHEN Xiaolian, ZHOU Quanyong, WEI Qipeng, LIU Linxiu, ZOU Zhiheng, XIE Jinfang . Effects of Complex Organic Trace Elements on Growth Performance and Trace Element Contents of Feces of Chongren Chickens[J]. Chinese Journal of Animal Nutrition, 2018 , 30(3) : 1172 -1177 . DOI: 10.3969/j.issn.1006-267x.2018.03.043

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