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Table 1 Basic information on dairy cows with different body condition score (BCS)

From: Effects of body condition on the insulin resistance, lipid metabolism and oxidative stress of lactating dairy cows

Item

BCS1

SEM

P-value

Low

Medium

High

No. of cows, head

12

15

15

  

Parity

2.8

2.3

2.3

0.24

0.23

Days in milk

220

236

233

5.77

0.16

BCS

2.68c (2.50–2.75)

3.22b (3.00–3.50)

3.88a (3.75–4.25)

0.04

< 0.01

Milk yield, kg/d

31.7

32.0

30.2

0.83

0.23

Milk composition, %

Fat

3.91

3.85

3.86

0.26

0.99

Protein

3.21b

3.50a

3.38ab

0.06

0.01

Lactose

5.07

5.14

5.18

0.05

0.32

  1. a-c Means within same row with different superscripts differ (P < 0.05)
  2. 1 Low: BCS ≤ 2.75 (n = 12); Medium: 3.0 ≤ BCS ≤ 3.5 (n = 15); BCS ≥ 3.75 (n = 15)