2002 Paul M. VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Selection of dairy.

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Presentation transcript:

2002 Paul M. VanRaden Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD Selection of dairy cattle for lifetime profit

NAAB Dairy Trade Mission – Lifetime Profit (2)P.M. VanRaden 2002 Objectives  Document USA Net Merit index  Discuss traits to include, estimation of economic values  Compare current national selection indexes  Begin with table from Holstein International (February 1999, p 71)

NAAB Dairy Trade Mission – Lifetime Profit (3)P.M. VanRaden 2002

NAAB Dairy Trade Mission – Lifetime Profit (4)P.M. VanRaden 2002

NAAB Dairy Trade Mission – Lifetime Profit (5)P.M. VanRaden 2002

NAAB Dairy Trade Mission – Lifetime Profit (6)P.M. VanRaden 2002 Expression of Economic Indexes  Report proportion of emphasis (relative value / Σ |relative values|)  Reformat into two-way table of traits by countries (Bennet Cassell’s idea)  Also display history of USA indexes (table of traits by years)

NAAB Dairy Trade Mission – Lifetime Profit (7)P.M. VanRaden 2002 Relative emphasis on traits in USDA economic indexes (PD$, MFP$, CY$, and NM$) and Holstein Association TPI across time Year Introduced and Index Name Trait PD$TPIMFP$TPICY$TPI NM$TPI NM$ Protein Fat Milk % Fat 20 Longevity SCS Udder Feet / legs Size -4 Final Score

NAAB Dairy Trade Mission – Lifetime Profit (8)P.M. VanRaden 2002 Relative emphasis in selection indexes for other countries with many Holsteins Country (Interbull Code) USADEUFRANZLNLDCANGBRAUSITADNKSWEESP % of Interbull Population Index NameNM$RZGISUBWDPSLPIPLIAPRPFTS – ITMIICO Trait Protein Fat Milk % Protein 235 % Fat 22 Longevity SCS / mastitis Fertility Other diseases 23

NAAB Dairy Trade Mission – Lifetime Profit (9)P.M. VanRaden 2002 Relative emphasis in selection indexes for other countries with many Holsteins (cont.) Country (Interbull Code) USADEUFRANZLNLDCANGBRAUSITADNKSWEESP % of Interbull Population Index NameNM$RZGISUBWDPSLPIPLIAPRPFTS – ITMIICO Trait Udder traits Feet / legs Size Dairy character3 Rump21 Final score429 Calving ease Growth / meat46 Milking Speed <146 Temperament523

NAAB Dairy Trade Mission – Lifetime Profit (10)P.M. VanRaden 2002 Questions  Do cow shows and judging contests help or harm education?  What is feed cost for protein, fat?  Does milk volume have negative value only because of quotas? Milk volume quotas in Europe? People quotas in Australia, NZ?

NAAB Dairy Trade Mission – Lifetime Profit (11)P.M. VanRaden 2002 Prices of Milk and Water  Cost to USA consumers ($ / liter) American bottled water0.16 Canadian spring water0.51 Skim milk0.66 2% milk % (whole) milk0.72 French Alps water1.35  Milk requires water, cheese does not

NAAB Dairy Trade Mission – Lifetime Profit (12)P.M. VanRaden 2002 Conclusions  Many traits in addition to yield contribute to dairy cattle profit  Longevity, fertility, and health traits have high value  Direction unclear for some traits  Indexes have improved rapidly in recent years