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Table 6 Effects of late gestation supplementation of Ca salts of saturated/monounsaturated fatty acids (CON) or polyunsaturated fatty acids (PUFA) on milk productiona and cow reproductive performance

From: Effects of supplements differing in fatty acid profile to late gestational beef cows on cow performance, calf growth performance, and mRNA expression of genes associated with myogenesis and adipogenesis

Item

CONb

PUFAc

SEM

P-value

Milk production, kg/d

8.6

9.4

0.75

0.33

Composition

 Fat, %

2.4

2.3

0.36

0.75

 Protein, %

3.1

3.0

0.10

0.38

 Lactose, %

4.8

4.8

0.05

0.23

 Other solids, %

6.1

6.0

0.06

0.35

 Total solids, %

11.7

11.4

0.36

0.48

 MUN, mg/dL

14.0

14.5

0.89

0.59

AI pregnancy, %

75

64

–

0.35

Overall pregnancy, %

93

97

4.3

0.46

  1. aMilk production was determined via weigh-suckle-weigh technique at 64 ± 9 d postpartum on a subset of 7–9 pairs/group; Milk composition conducted on a subset of cows (4 cows/group) at 64 ± 9 d postpartum; MUN Milk urea nitrogen; AI Artificial insemination
  2. bCON = cows were supplemented soybean hulls mixed with 155 g DM/cow/d EnerGII (Virtus Nutrition LLC, Corcoran, CA) for 77 ± 6 d prepartum
  3. cPUFA = cows were supplemented soybean hulls mixed with 80 g DM/cow/d Strata + 80 g DM/cow/d Prequel (Virtus Nutrition LLC, Corcoran, CA) for 77 ± 6 d prepartum