家畜生态学报2025，Vol.46Issue(12)：30-35,6.DOI:10.3969/j.issn.1673-1182.2025.12.005
日粮中不同水平酵母硒对奶山羊泌乳性能、乳中硒含量、脂肪酸组成及血清抗氧化指标的影响
Effects of Selenium-enriched Yeast Supplementation on Lactation Performance,Milk Se Concentration,Milk Fatty Acid Composition,and Antioxidant Status in Lactating Dairy Goats
摘要
Abstract
The objective of this study is to evaluate the effects of supplementing different levels of Sele-nium-enriched yeast(Se-yeast)to the diet on the lactation performance,selenium content in milk,fatty acid(FA)composition,and serum antioxidant indicators of lactating goats.Using a 4×4 Latin square de-sign,four primiparous dairy goats(weight:49.7±3.2 kg,dairy in milk:70.3±1.1 d)were selected to supplement with Se-yeast to provide 0(control group),0.23 mg/kg(LSY group),0.46 mg/kg(MSY group),and 0.69 mg/kg(HSY group)of selenium(dry matter basis).The experiment takes 4 periods with 21 d for each period.Record daily milk production and collect milk samples on 17-21 d of each period,and blood samples on 21 d.The results showed that supplementing Se-yeast did not affect the lactation per-formance of dairy goats,and the selenium content in milk increased with the level of Se-yeast.The seleni-um content in milk for the MSY and HSY groups was twice higher than that of the control group(P＜0.05).Except for C22:0(P=0.031)and C22:1(P=0.021)in goat milk,other milk FA were not affected by the level of Se-yeast(P＞0.05).As the level of Se-yeast increasing,the activity of glutathione peroxi-dase in the serum of dairy goats increases linearly(P=0.001),while the content of malondialdehyde de-creases linearly(P=0.004).In summary,supplementing Se-yeast does not affect the lactation perform-ance of dairy goats.The increase of the level of Se-yeast can lead to increase the selenium content in dairy goat milk,change milk FA composition,and improve the antioxidant capacity of dairy goats.关键词
奶山羊/酵母硒/乳硒含量/乳脂肪酸Key words
dairy goats/Se-yeast/milk Se content/milk fatty acid composition分类
农业科技引用本文复制引用
宋永喜,邬娇,罗军,王平..日粮中不同水平酵母硒对奶山羊泌乳性能、乳中硒含量、脂肪酸组成及血清抗氧化指标的影响[J].家畜生态学报,2025,46(12):30-35,6.基金项目
国家重点研发计划专项(2022YFD1600100) （2022YFD1600100）
陕西省重点研发计划(2018ZDXM-NY-033) （2018ZDXM-NY-033）
