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• 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!!!