饲料工业2026，Vol.47Issue(11)：66-72,7.DOI:10.13302/j.cnki.fi.2026.11.010
包被叶酸或包被硫酸锌对奶牛生产性能和瘤胃发酵的影响
Effects of Coated Folic Acid or Coated Zinc Sulfate on Production Performance and Rumen Fermentation in Dairy Cows
摘要
Abstract
The study evaluated the effects of coated folic acid(CFA)or coated zinc sulfate(CZS)on lactation performance,nutrient digestion,rumen fermentation and antioxidant indicator in dairy cows.Forty-eight mid-lactation Chinese Holstein dairy cows were selected and assigned in a randomized block design to 4 groups:control group without supplementation,CFA,CZS groups and CFZ group with supplementation of CFA 6 g/d,CZS 200 mg/d and CFA 6 g/d+CZS 200 mg/d,respectively.The experiment period was 80 days with 20 days for adaptation.The results showed that supplementation with CFA or CZS increased fat-corrected milk(FCM)yield,milk fat yield,feed efficiency(FE),rumen total volatile fatty acids(TVFA)con-tent,acetate molar proportion and acetate to propionate ratio,and blood total protein,albumin,superoxide dismutase(SOD)and glutathione peroxidase(GSH-Px)(P<0.05).Dietary supplementation of CFA increased the digestibility of dry matter(DM),organic matter,crude protein,neutral deter-gent fiber(NDF)and acid detergent fiber,and blood 5-methyltetrahydrofolate level(P<0.05).Dietary supplementation of CZS increased the digestibility of DM and NDF,and blood alkaline phosphatase activity(P<0.05).The significant interaction between CFA and CZS was observed on FE,rumen TVFA content,blood SOD and GSH-Px activities(P<0.05).The results indicate that supplementation of CFA or CZS increase FCM yield,and the combined addition of CFA and CZS is more efficient in improv-ing FE,rumen fermentation and antioxidant status in dairy cows.关键词
叶酸/锌/奶牛/泌乳性能/瘤胃发酵Key words
folic acid/zinc/dairy cow/lactation performance/rumen fermentation分类
农业科技引用本文复制引用
孟祥瑞,穆姝心,石凯,张建青,李晓杰,雷文华,刘强,王聪..包被叶酸或包被硫酸锌对奶牛生产性能和瘤胃发酵的影响[J].饲料工业,2026,47(11):66-72,7.基金项目
山西省高等学校大学生创新训练计划项目[S202410113076] （）
山西省现代农业牛产业技术体系建设项目[2026CYJSTX13] （）
