| Autor: |
فرود احسان بخش, حمید امانلو, محمدحسین شهیر |
| Zdroj: |
Iranian Journal of Animal Science (IJAS); 2023, Vol. 54 Issue 2, p117-128, 12p |
| Abstrakt: |
The aim of this experiment was to evaluate the effect of dietary Mg on reproduction performance and expression of MMP-2, MMP-9 and TIMP-2 genes in the placenta. 50 cows in each treatments, from 3 weeks to calving were randomly assigned to four experimental treatments. Treatments included control treatment (magnesium at the level of NRC recommendations), magnesium sulfate, magnesium carbonate and magnesium oxide treatments (magnesium 0.6% of DM). Placenta samples were taken after calving and mRNA expression were investigated. Blood samples were collected pre and postpartum and plasma metabolites were measured. Relative mRNA expression of MMP-9 in magnesium oxide and magnesium sulfate treatments was higher and the percent of retained placenta in this treatments was lower than control group. Experimental treatments had no significant effect on the expression of MMP-2 and TIMP-2. Experimental diets had no effect on uterine involution score, first estrus and AI/conception. Treatments improved plasma Mg and insulin concentrations and reduced NEFA significantly. Magnesium oxide treatment improved pregnancy at first AI and pregnancy by 210 days postpartum. Cows in the experimental diets had fewer open days than the control group. The results showed that increasing dietary Mg compared to NRC (2001) recommendations could reduce retained placenta and improve fertility. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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