Location: Nutrition, Growth and PhysiologyTitle: Maternal nutrient restriction in beef heifers during early gestation increases B12 and folate concentrations in fetal allantoic fluids
|SYRING, JESSICA - North Dakota State University|
|NEVILLE, TAMMI - North Dakota State University|
|WARD, ALISON - North Dakota State University|
|DAHLEN, CARL - North Dakota State University|
|REYNOLDS, LAWRENCE - North Dakota State University|
|BOROWICZ, PAWEL - North Dakota State University|
|MCLEAN, KYLE - University Of Tennessee|
|CATON, JOEL - North Dakota State University|
Submitted to: Animal
Publication Type: Proceedings
Publication Acceptance Date: 6/1/2022
Publication Date: 8/1/2022
Citation: Syring, J.S., Neville, T.L., Crouse, M.S., Ward, A.K., Dahlen, C.R., Reynolds, L.P., Borowicz, P.P., McLean, K.J., Neville, B.W., Caton, J.S. 2022. Maternal nutrient restriction in beef heifers during early gestation increases B12 and folate concentrations in fetal allantoic fluids. Animal. 13(3):271-272. https://doi.org/10.1016/j.anscip.2022.07.033.
Technical Abstract: We hypothesized that maternal nutrient restriction and day of gestation would affect the concentration of folate and vitamin B12 in maternal serum, allantoic fluid (ALF) and amniotic fluid (AMF) during early gestation in beef heifers. Forty-three heifers were artificially inseminated and fed a control (CON = 100% of requirements) or restricted (RES = 60% of CON) diet. On d 16, 34, or 50 of gestation, heifers were ovariohysterectomized and samples of maternal serum, ALF, and AMF were collected. The concentrations of folate and vitamin B12 in ALF were greater (P = 0.03 and P = 0.04, respectively) in RES than CON heifers. Folate concentration was also greater (P = 0.003) in ALF on d 34 than on d 50. Folate was greater in ALF, intermediate in serum, and lowest in AMF (P < 0.001). A nutrition × fluid interaction was observed for B12 concentrations, where it was greater (P = 0.04) in CON ALF than CON or RES serum and AMF, which were greater (P = 0.04) than RES ALF. These findings support our hypothesis that maternal nutrition and day of gestation affect folate and B12 concentrations in maternal serum, ALF, and AMF of beef heifers during early gestation.