New Zealand Dairy Statistics 2010-11 - LIC

Ayrshire
Age Cows tested Days in milk Milk (litres) Milkfat (kg) Protein (kg) Milksolids (kg) Milkfat (%) Protein (%) Milksolids (%)
2 3,347 235 3,170 141.0 114.3 255.3 4.48 3.61 8.09
3 2,975 232 3,715 162.9 134.6 297.4 4.42 3.63 8.05
4 2,621 231 4,062 178.0 147.5 325.4 4.41 3.64 8.05
5 2,463 231 4,198 184.3 152.5 336.9 4.42 3.64 8.06
6 2,028 230 4,216 183.9 152.5 336.4 4.39 3.63 8.02
7 1,608 228 4,193 182.5 150.8 333.2 4.37 3.61 7.98
8 1,366 224 4,116 178.4 147.6 326.0 4.36 3.59 7.95
9 971 225 4,063 175.3 145.6 320.9 4.34 3.60 7.94
10+ 1,389 216 3,700 158.6 131.3 289.9 4.30 3.55 7.85
Total 18,768 229 3,871 169.3 139.7 309.0 4.40 3.62 8.02
Holstein-Friesians have the highest average liveweight across all ages for the breeds shown in Table 4.7. In contrast, Jerseys have the lowest
average liveweight at all ages. Liveweight by age and breed is illustrated in Graph 4.3.
Table 4.7: Liveweight by age and breed of cow in 2010/11
Holstein-Friesian Jersey Holstein-Friesian/Jersey crossbreed
Age Average liveweight Number of cows Average liveweight Number of cows Average liveweight Number of cows
(kg)
(kg)
(kg)
2 397 194,511 317 66,612 371 244,165
3 481 166,399 367 60,118 428 199,394
4 515 138,738 382 51,013 451 152,614
5 520 126,665 406 47,263 468 132,605
6 533 99,144 409 36,273 478 98,832
7 526 76,863 420 30,031 480 79,439
8 533 61,636 425 22,400 486 59,090
9 531 46,625 425 16,149 493 41,953
10+ 531 50,617 416 20,637 489 47,906
Total 491 383 440
Graph 4.3: Liveweight by age and breed of cow in 2010/11
Liveweight (kg)
550
500
450
400
350
300
2 3 4 5 6 7 8 9 10+
Age
Holstein-Friesian Holstein-Friesian/Jersey crossbreed
Jersey
New Zealand Dairy Statistics 2010-11 27