Effects of Supplemental Feeding Sodium Sulfate, Trace Elements and Their Combination on Three Kinds of Estrogen Sulfate Daily Outputs of Kazak Pregnancy Horses

LI Xiaobin, CHEN Hui, ZHAO Fang, XIE Jinglong, YANG Juqing, YANG Kailun

doi:10.3969/j.issn.1006-267x.2018.10.018

2018 , Vol. 30 >Issue 10: 3941 - 3949

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.10.018

Molecular Nutrition

Effects of Supplemental Feeding Sodium Sulfate, Trace Elements and Their Combination on Three Kinds of Estrogen Sulfate Daily Outputs of Kazak Pregnancy Horses

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Xinjiang Key Laboratory of Meat & Milk Production Herbivore Nutrition, Xinjiang Agricultural University, Urumqi 830052, China

Received date: 2018-03-23

Online published: 2018-10-20

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Abstract

The objective of this study was to investigate the effects of supplemental feeding sodium sulfate, trace elements and their combination on plasma and urine sodium estrone sulfate, sodium equilin sulfate, sodium 17α-dihydroequilin sulfate contents and above three kinds of estrogen sulfate daily outputs of Kazak female horses in mid-late pregnancy. Thirty-four 5-to 7-year-old and 2 to 4 fetuses Kazak horses in the middle of pregnancy were divided into 4 groups. The control group had 9 horses, trial group Ⅰ had 9 horses, trial group Ⅱ had 8 horses and trial group Ⅲ had 8 horses. Under the same feeding condition, the supplemental feeding experiment lasted for 90 days. On the 1st to 30th day, horses in the control group, trial group Ⅰ, trial group Ⅱ and trial group Ⅲ were fed 50 g corn flour, 50 g corn flour+6 g sodium sulfate, 50 g corn flour+5 g trace elements, and 50 g corn flour+6 g sodium sulfate+5 g trace elements per horse per day, respectively. On the 31st to 90th day, horses in the control group, trial group Ⅰ, trial group Ⅱ and trial group Ⅲ were fed 100 g corn flour, 100 g corn flour+12 g sodium sulfate, 100 g corn flour+5 g trace elements, and 100 g corn flour+12 g sodium sulfate+5 g trace elements per horse per day, respectively. The results showed as follows:1) compared with the control group, the sodium estrone sulfate, sodium equilin sulfate and sodium 17α-dihydroequilin sulfate contents in plasma in sodium sulfate, trace elements and their combination groups were increased, but the differences were not significant among groups (P>0.05). 2) On the each sampling time points, the sodium estrone sulfate, sodium equilin sulfate and sodium 17α-dihydroequilin sulfate contents in urine of trial groups had no significant differences compared with the control group (P>0.05), but the values were still higher than those in control group. On day 30, above three kinds of estrogen sulfate contents in urine in trial group Ⅲ were all the highest. 3) The sodium estrone sulfate, sodium equilin sulfate, sodium 17α-dihydroequilinsulfate daily outputs in trial group Ⅲ were significantly or extremely significantly higher than those in control group at day 30, 60 and 90 (P<0.05 or P<0.01). It is concluded that supplemental feeding sodium sulfate, trace elements and their combination can increase the contents of urine sodium estrone sulfate, sodium equilin sulfate and sodium 17α-dihydroequilin sulfate of Kazak pregnancy horses, thus increase the daily outputs of sodium estrone sulfate, sodium equilin sulfate and sodium 17α-dihydroequilin sulfate.

Key words： Kazak pregnancy horse; sodium sulfate; trace elements; estrogen sulfate

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LI Xiaobin, CHEN Hui, ZHAO Fang, XIE Jinglong, YANG Juqing, YANG Kailun . Effects of Supplemental Feeding Sodium Sulfate, Trace Elements and Their Combination on Three Kinds of Estrogen Sulfate Daily Outputs of Kazak Pregnancy Horses[J]. Chinese Journal of Animal Nutrition, 2018 , 30(10) : 3941 -3949 . DOI: 10.3969/j.issn.1006-267x.2018.10.018

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