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Table 4 Reproductive parameters of cows fed either with high (HE) or low (LE) energy diet

From: Possible involvement of the RARRES2/CMKLR1-system in metabolic and reproductive parameters in Holstein dairy cows

  HE (n = 8) LE (n = 8) P-value
Commencement of luteal activity (days) 24.86 ± 4.07 31.88 ± 4.39 0.27
Cycle length (days) 33.13 ± 6.12 29.13 ± 3.91 0.59
Follicular waves (0) 12.5% (1:8) 25% (2/8) 0.60
Follicular waves (1) 0% (0/8) 25% (2/8) 0.18
Follicular waves (2) 12.5% (1:8) 12.5% (1:8) 1
Follicular waves (3) 50% (4/8) 0% (0/8) 0.07
Follicular waves (≥4) 25% (2/8) 37.5% (3/8) 0.70
Number of small follicles 44.13 ± 13.57 24.75 ± 8.57 0.25
Number of medium follicles 9.63 ± 2.94 5.38 ± 2.01 0.25
Number of large follicles 6.38 ± 1.21 3.75 ± 1.16 0.12
Calving-first AI interval (days) 63.4 ± 3.97 94.5 ± 5.5 0.008
Calving-calving interval (days) 367.8 ± 16.64 372.5 ± 0.5 0.87
Success rate 35 days after AI 37.5% (3/8) 50% (4/8) 0.75
Success rate 90 days after AI 37.5% (3/8) 50% (4/8) 0.75