New Zealand Dairy Statistics 2014-15

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Table 4.15: Average Breeding Values and Breeding Worth of 2010-born bulls (reliability of 75% or greater) Breed Milkfat BV Protein BV Milk Volume BV Liveweight BV Somatic Cell BV Fertility BV Residual Survival BV BW Number of Bulls Ayrshire 7.4 6.0 216.3 -2.2 0.1 -1.8 46.8 36.5 6 Holstein Friesian 23.9 30.1 839.6 42.3 0.0 1.1 -3.0 144.7 128 Jersey 12.7 1.3 -427.0 -57.9 0.0 2.0 38.2 190.7 70 HF/J Crossbred 21.5 18.4 224.2 -4.7 0.0 2.3 -9.5 189.7 51 The genetic trend of proven dairy bulls is shown in Graph 4.16. Bulls born in 2010 are first proven in the 2014/15 season. Graph 4.16: Genetic trend of proven dairy bulls by year of birth (reliability of 75% or greater) (Evaluation date: 16 May 2015) 250 200 150 Breeding Worth ($) 100 50 0 -50 -100 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Year of birth Holstein-Friesian Jersey Ayrshire Holstein-Friesian/Jersey Crossbreed (Evaluation date: 16 May 2015) Young bulls are initially selected for use in Artificial Breeding based on the genetic merit of their sire and dam. These young sires are then progeny tested to estimate their Breeding Worth more accurately via the performance of their daughters. Each year some progeny tested bulls are returned to service for use as proven sires. Table 4.16 shows the number of sires, by birth year and breed, for which the Reliability of the BW was at least 75%. The information in this table is updated every year for all age groups to include older bulls that have now been proven in New Zealand. Table 4.16: Number of Sires by birth year and breed category (reliability of BW 75% or greater, includes overseas bulls) Year of Birth Number of Sires Holstein-Friesian Jersey HF/Jersey Crossbred Ayrshire Other Breeds 2000 534 289 137 67 34 7 2001 539 262 162 74 33 8 2002 535 272 162 73 24 4 2003 516 258 151 69 35 3 2004 534 265 151 91 26 1 2005 502 230 156 94 18 4 2006 499 235 155 82 25 2 2007 312 153 95 42 19 3 2008 330 143 102 68 16 1 2009 307 145 95 58 9 0 2010 255 128 70 51 6 0 (Evaluation date: 16 May 2015) 44 New Zealand Dairy Statistics 2014-15
ii) Cow Evaluations The Breeding Worth for herds presented below (Table 4.17 and Graph 4.17) is based on cows of the users of herd testing services, in herds with at least 80 cows, in the 2014/15 season. Table 4.17 shows that 50% of these herds had a BW of 106 or above and 25% of these herds had a BW of 124 or above. Table 4.17: Herd Breeding Worth in 2014/15 Median Top 5% Top 10% Top 25% Bottom 25% Bottom 10% Bottom 5% Herd BW 106 > 149 > 141 > 124 < 82 < 56 < 39 Graph 4.17: Distribution of Herd Breeding Worth in 2014/15 (Evaluation date: 16 May 2015) 16 14 12 Percentage of herds 10 8 6 4 2 0 170 (Evaluation date: 16 May 2015) The Production Worth (PW) for herds presented below (Table 4.18 and Graph 4.18) is based on cows of the users of herd testing services, in herds with at least 80 cows, in the 2014/15 season. Table 4.18 shows that 50% of these herds had a PW of 119 or above and 25% of these herds had a PW of 142 or above. Table 4.18: Herd Production Worth in 2014/15 Median Top 5% Top 10% Top 25% Bottom 25% Bottom 10% Bottom 5% Herd PW 119 > 175 > 162 > 142 < 94 < 68 < 49 Graph 4.18: Distribution of Herd Production Worth in 2014/15 (Evaluation date: 16 May 2015) 14 12 Percentage of herds 10 8 6 4 2 0 220 (Evaluation date: 16 May 2015) New Zealand Dairy Statistics 2014-15 45
Page 1 and 2: New Zealand Dairy Statistics 2014-1
Page 3 and 4: Contents 1. Introduction 4 2. Natio
Page 5 and 6: List of graphs 2.1 Trend in the num
Page 7 and 8: 2. National dairy statistics A. Ind
Page 9 and 10: The total cow population in the 201
Page 11 and 12: i) Production per cow and per hecta
Page 13 and 14: ii) Herd size distribution • 12%
Page 15 and 16: 3. Regional dairy statistics A. Reg
Page 17 and 18: • Highest average production reco
Page 19 and 20: (table 3.3 continued) Region Distri
Page 21 and 22: (table 3.4 continued) Region Distri
Page 23 and 24: Herd production in each of the main
Page 25 and 26: Table 3.10 shows the number and per
Page 27 and 28: 4. Herd improvement A. Use of herd
Page 29 and 30: B. Herd test averages The lactation
Page 31 and 32: ii) Monthly averages • Highest av
Page 33 and 34: iii) Breed category averages • Ho
Page 35 and 36: C. Artificial Breeding (AB) statist
Page 37 and 38: In 2014/15 the average number of in
Page 39 and 40: The percentage of inseminations for
Page 41 and 42: Mean actual 6-week in-calf rate ran
Page 43 and 44: E. Calving i) Planned start of calv
Page 45: F. Animal Evaluation The genetic me
Page 49 and 50: The genetic trend for cows is based
Page 51 and 52: 5. Prices received A. Milk prices U
Page 53 and 54: 6. Disease Control A. Tuberculosis

New Zealand Dairy Statistics 2014-15

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