sperm are sorted. “x” sperm are saved “y” sperm and “undetermined” sperm are discarded

• Sperm are sorted. • “X” sperm are saved• “Y” sperm and “undetermined” sperm are discarded

The sperm sorting displays on monitors

Post Thaw Purity Analysis

Sexed Semen Handling& A.I. Technique

Only experienced breeders!¼ cc semen strawUse gloves and tweezers35-37 C water temperature

In water for 30-45 seconds

Post-thaw thermal protectionPre-warm A.I. gunSemen into uterus within 5 minutes

Use only in virgin heifers that have achieved >60% of mature weight by 14 months

Use of estrus synchronization and breeding to observed standing heat encouraged

Inseminate heifers 8-12 hours after observed estrus (AM/PM rule)

Use of timed A.I. discouraged

Heifer Management Practices

Use primarily on first or second services in virgin heifers showing true standing heat

Semen thawing and handling areas should be warm and draft-free

Warm all semen handling equipment (¼ cc gun, sheaths, paper towels) prior to contacting straws

Only highly experienced technicians should use this product

Keys to Success Using Sexed Semen

Benefits of Using Better BullsMore milk produced per lactation.

Greater number of profitable lactations.

Higher lifetime production per cow.

Improved profitability of the farm.

The Circle of SelectionWhat genetics do work

Find the best bullsFor fertilityFor production, health and type

Mate bulls to right cows

Utilize sexed and beef on dairy opportunities

Support farm fertility and managementDid our genetics work; validate!

Beef on Dairy opportunities

Low production cows, breed to beef semen

100 $ + more for cross bred calfChoose calving ease breed: ANGUSFast growing calves:

High killing out percentage

High quality beef: marbling gives taste!!!!!

ANGUS BEEF BULL!!!!!

Feedlot, fast growing HF*AN calves

More profit with quality beef

The Circle of SelectionWhat genetics do work

Find the best bullsFor fertilityFor production, health and type

Mate bulls to right cowsMate bulls to right cowsUtilize sexed and beef opportunities

Support farm fertility and management

Did our genetics work; validate!

Reproductive Solutions

Addressing Management Issues

The Circle of SelectionWhat genetics do work

Find the best bullsFor fertilityFor production, health and type

Mate bulls to right cowsMate bulls to right cowsUtilize sexed and beef opportunities

Support farm fertility and management

Did our genetics work; validate!

1930s – 1,500 kg of milk/cow/year

1940s – 2,020 kg of milk/cow/year

遗传进展Genetic Advancement

1950s - 2,500 kg of milk/cow/year

21st Century - 11,606 kg of milk/cow/year

美国遗传进展趋势荷斯坦的产奶量

Genetic Trend in U.S.A. Milk Production - Holstein

Phenotypic base 性状基数 = 11,638 kg

-3500-3000-2500-2000-1500-1000-500

0500

1000

1960 1970 1980 1990 2000出生年份 Birth Year

Bre

ed

ing

Valu

e 育

种值

(kg

)

sires

cows

美国全国奶牛存栏和产量U.S.A. National Dairy Herd Population and Milk Yield

40 50 60 70 80 90 00 05 100

5

10

15

20

25

30

0

2,000

4,000

6,000

8,000

10,000

Year

奶牛

（百

万头

）C

ow

s (

million

s)

奶产

量（

公斤

/头）

Milk

yie

ld (k

g/c

ow

)

USDA Statistics

Thank you!!!