Effects of Mineral Deficiency on Body Weight Gain and Wool Growth of House-Feeding Tan Sheep

  • SUI Dan ,
  • LIU Ning ,
  • ZHOU Yuxiang
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  • 1. College of Agriculture, Ningxia University, Yinchuan 750021, China;
    2. Incorporated Company of Zhongmu Yilin of Ningxia, Yinchuan 750021, China;
    3. Supervision Institute of Veterinary Drug and Feed of Ningxia, Yinchuan 750004, China

Received date: 2019-01-29

  Online published: 2019-08-19

Abstract

This experiment was conducted to determine the effects of trace elements of copper, zinc and selenium deficiency on performance and pica of house-feeding Tan sheep. Sixteen healthy Tan wether sheep installed permanent rumen fistula with similar age were selected and divided into 4 groups using complete random test design. Every group contained 4 sheep, and the body weight of was no significant difference among all groups (P>0.05). The standard diet was compounded that the requirements of protein, vitamins, calcium, phosphorus, selenium, copper and zinc were according to NRC (2008) and Inner Mongolia fine wool sheep (4 to 18 months). The control group was fed the standard diet, and the mineral deficiency groups were experimental groups, which were experimental group Ⅰ (the copper level was half of the control group, but selenium, zinc and other nutrient levels were same as the control group), experimental group Ⅱ (the zinc level was half of the control group, but selenium, copper and other nutrient levels were same as the control group) and experimental group Ⅲ (the selenium level was half of the control group, but copper, zinc and other nutrient levels were same as the control group), respectively. The pre-experimental period lasted for 7 days, and the experimental period lasted for 60 days. The results showed as follows:1) compared with the control group, the total feed intake, daily gain and wool density of house-feeding Tan sheep of experimental groups were significantly decreased (P<0.05 or P<0.01). 2) Compared with the control group, the occurrence of pica appearance of house-feeding Tan sheep of experimental groups was observed. In conclusion, the deficiency of copper, zinc and selenium in die not only affects weight gain, but also lead to pica of house-feeding Tan sheep

Cite this article

SUI Dan , LIU Ning , ZHOU Yuxiang . Effects of Mineral Deficiency on Body Weight Gain and Wool Growth of House-Feeding Tan Sheep[J]. Chinese Journal of Animal Nutrition, 2019 , 31(8) : 3643 -3650 . DOI: 10.3969/j.issn.1006-267x.2019.08.025

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