Effects of Different Zinc Sources and Levels on Growth Performance and Content of Zinc in Serum and Feces of Weaned Piglets

CHEN Yaxiang; CHEN Sijia; MU Rui; FANG Rejun

doi:10.3969/j.issn.1006-267x.2019.10.051

2019 , Vol. 31 >Issue 10: 4852 - 4858

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.10.051

Effects of Different Zinc Sources and Levels on Growth Performance and Content of Zinc in Serum and Feces of Weaned Piglets

CHEN Yaxiang ,
CHEN Sijia ,
MU Rui ,
FANG Rejun

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College of Animal Science and Technology, Hunan Agricultural University, Changsha 410218, China

Received date: 2019-03-26

Online published: 2019-10-17

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Abstract

The purpose of this experiment was to study the effects of different zinc sources and levels on growth performance and content of zinc in serum and feces of weaned piglets. Two new types of zinc oxide were the inclusion molecular zinc oxide which made by inclusion technology and the zinc oxide which coated with stearic acid. A total of 250 twenty-four-day-old "Duroc×Langdrance×Large White" weaned piglets with body weight of (6.74±0.35) kg were randomly divided into 5 groups:control group (basic diet+2 250 mg/kg normal oxidation zinc, as zinc count, the same as below), inclusion molecular zinc oxide 300 group (basic diet+300 mg/kg inclusion molecular zinc oxide), inclusion molecular zinc oxide 600 group (basic diet+600 mg/kg inclusion molecular zinc oxide), coated zinc oxide 300 group (basic diet+300 mg/kg coated zinc oxide) and coated zinc oxide 600 group (basic diet+600 mg/kg coated zinc oxide), and each group contained 5 replicates and each replicated contained 10 pigs (half male and half female). The pre-experimental period lasted for 3 days, and the experimental period lasted for 14 days. The results showed as follows:1) compared with the control group, the final body weight, average daily feed intake, average daily gain, feed conversion ratio and diarrhea rate of experimental groups had no significant differences (P>0.05). Compared with the coated zinc oxide groups, the average daily gain of inclusion molecular zinc oxide group was significantly increased (P<0.05), and the average daily feed intake showed an increasing trend (0.05<P<0.10). 2) Compared with the control group, the serum zinc contents of experimental groups were decreased by 62.01%, 39.94%, 56.17% and 48.70%, respectively; the faecal zinc contents were 0.25 fold, 0.41 fold, 0.31 fold and 0.32 fold of the control group, and there were all significant difference (P<0.05). In conclusion, 300 or 600 mg/kg inclusion molecule zinc oxide and coated zinc oxide both can achieve the same effects as high dose (2 250 mg/kg) zinc oxide on growth performance, and the fecal zinc emission reduced significantly.

Key words： zinc source; level; weaned piglets; growth performance; trace elements

Cite this article

CHEN Yaxiang , CHEN Sijia , MU Rui , FANG Rejun . Effects of Different Zinc Sources and Levels on Growth Performance and Content of Zinc in Serum and Feces of Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2019 , 31(10) : 4852 -4858 . DOI: 10.3969/j.issn.1006-267x.2019.10.051

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