Table 1.
Ingredient and chemical composition of basal diets fed during the pre- and postpartum perioda.
Table 2.
Effect of prepartum control or conjugated linoleic acids (CLA) supplementation on postpartum milk yield, milk component yield and milk composition for dairy cows.
Table 3.
Effect of prepartum control or conjugated linoleic acids (CLA) supplementation on body condition score (BCS) and BCS change for dairy cows.
Fig 1.
Effect of prepartum control or conjugated linoleic acids (CLA) supplementation on serum fatty acids (FA) at first day of supplementation and 10 days prepartum, and at 1, 7, 14, and 30 days postpartum in dairy cows.
Treatments: Control (open bar, n = 34) cows supplemented with 78 g of Energy Booster 100 (Milk Specialties Global, Eden Prairie, MN) and CLA (closed bar, n = 30) cows supplemented with 100 g/day of Lutrell Pure (BASF, Ludwigshafen, Germany). Supplementation was by individual topdress of product mixed with 200 g corn gluten feed for 16 days prepartum. * P ≤ 0.05 for treatment differences within individual timepoint. Overall treatment effect P = 0.06. Interaction treatment x time P = 0.02.
Fig 2.
Effect of prepartum control or conjugated linoleic acids (CLA) supplementation on serum β-hydroxybutyrate (BHB) at 1, 7, 14, and 30 days postpartum in dairy cows.
Treatments: Control (open bar, n = 34) cows supplemented with 78 g of Energy Booster 100 (Milk Specialties Global, Eden Prairie, MN) and CLA (closed bar, n = 30) cows supplemented with 100 g/day of Lutrell Pure (BASF, Ludwigshafen, Germany). Supplementation was by individual topdress of product mixed with 200 g corn gluten feed for 16 days prepartum. Overall treatment effect P = 0.03. Interaction treatment x time P = 0.22.
Table 4.
Effect of prepartum control or conjugated linoleic acids (CLA) supplementation on proportion of health disorders for dairy cows from calving until 30 days postpartum.
Table 5.
Effect of prepartum control or conjugated linoleic acids (CLA) supplementation on overall pregnancy per fixed timed artificial insemination (FTAI) and pregnancy loss, and proportion of cows pregnant at 150 days postpartum.
Fig 3.
Effect of prepartum control or conjugated linoleic acids (CLA) supplementation on calving to conception interval in dairy cows.
Treatments: Control (gray line, n = 128) cows supplemented with 78 g of Energy Booster 100 (Milk Specialties Global, Eden Prairie, MN) and CLA (black line, n = 138) cows supplemented with 100 g/day of Lutrell Pure (BASF, Ludwigshafen, Germany). Supplementation was by individual topdress of product mixed with 200 g corn gluten feed for 16 days prepartum. Hazard ratio (95% confidence interval) and Hazard ratio P-value were 0.99 (0.75 to 1.31) and P = 0.95. Mean ± standard error were 107.7 ± 3.00 for control and 107.4 ± 2.99 for CLA treatments. Median (95% confidence interval) were 106.5 days (75 to 110 days) for control and 105.5 days (75 to 110 days) for CLA treatments. LogRank P = 0.97, and Wilcoxon P = 0.96.