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Table 1 The different body measurements of horses and formulas used to estimate body weight (BW) of horses

From: Weight estimation and hormone concentrations related to body condition in Icelandic and Warmblood horses: a field study

ReferenceMeasurementscBW formula (kg)
Marcenac and Aublet [10]G2Girth (m)3 × 80
Staun [11]G26.25 × Girth (cm) – 625
Willoughby [12]aG2(0.14475 × Girth (cm) / 2.54)3 × 0.4536 (Males)
(0.14341 × Girth (cm) / 2.54)3 × 0.4536 (Females)
Ensminger [13]G1 + L1((Girth2 (cm) × Length (cm))/2.543/660 + 22.7
Jansson [14]G2 + L2Girth2 (cm) × Length (cm)/8900
Carroll and Huntington [7]bG2 + L1(Girth2 (cm) × Length (cm))/11,877
Jones et al. [15]U + L1(Girth (cm)1.78 × Length (cm)0.97)/3011
Martin-Rosset [16]H + G24.3 × Girth (cm) + 3.0 × Height (cm) – 785 (Horse)
3.56 × Girth + 3.65 × Height – 714.77 (Pony)
Martinson [17]H + NC + G1 + L1(Girth (cm)1.486 × Length (cm)0.554 × Height (cm)0.599 × Neck (cm)0.173)/3606
Catalano [18]H + NC + G1 + L1(Girth (cm)1.528 × Length (cm)0.574 × Height (cm)0.246 × Neck (cm)0.261)/1209
  1. G1: heart girth from top of the withers; G2: heart girth from slope of the withers; L1: length from point of shoulder to point of buttock; L2: length from point of elbow to point of buttock; U: umbilical girth, H: height at withers; NC: neck circumference
  2. aIn the original reference units are in inches (in) and pounds (lb)
  3. bIf BCS < 2.5 out of 5 use Y derivative 12265, if BCS ≥ 3 out of 5 then use Y derivative 11706
  4. cMeasurements are illustrated in Fig. 1