ANSC 1401 - TTU (AI and Embryo
Transfer)
Advantages of AI - ANS-1) Widespread use of outstanding sires that have been
progeny tested
2) Greater availability of sires (including after death)
3) Overcomes some incompatibles between males and females
4) Eliminates or lessens dangers of males to humans and females
5) Reduces spreading of reproductive diseases if proper checks are preformed
6) Rapid proof of a sire is possible
7) More uniform crop of offspring
Diluents of Semen - ANS-1) egg yolk-citrate
2) milk
3) fruit and vegetable juices
4) addition of glycerol before freezing; antibiotics
Disadvantages of AI - ANS-1) Widespread use of poor sires is possible - selection must
be accurate
2) Inbreeding can increase because of the use of fewer sires
3) Trained personnel are necessary for semen collection and AI
4) Spread of genetic defects is possible; Curly Calf/BALD
5) Requires more checking and confinement of females, increases labor required and
may be more expensive than maintaining sires
6) Too much use of an unproven recent show ring or race winner
Embryo Transfer Benefits - ANS-1) extends the productivity of superior females
2) continues productive life of a female that is unable to carry young but is fertile
3) allows more rapid proof of the worth of a female
4) can shorten generation interval
5) can eliminate problems with importation restrictions
Embryo Transfer Problems - ANS-1) cost
2) response to super ovulation is variable
3) outstanding female can become infertile
4) low fertility females could be propagated
Transfer)
Advantages of AI - ANS-1) Widespread use of outstanding sires that have been
progeny tested
2) Greater availability of sires (including after death)
3) Overcomes some incompatibles between males and females
4) Eliminates or lessens dangers of males to humans and females
5) Reduces spreading of reproductive diseases if proper checks are preformed
6) Rapid proof of a sire is possible
7) More uniform crop of offspring
Diluents of Semen - ANS-1) egg yolk-citrate
2) milk
3) fruit and vegetable juices
4) addition of glycerol before freezing; antibiotics
Disadvantages of AI - ANS-1) Widespread use of poor sires is possible - selection must
be accurate
2) Inbreeding can increase because of the use of fewer sires
3) Trained personnel are necessary for semen collection and AI
4) Spread of genetic defects is possible; Curly Calf/BALD
5) Requires more checking and confinement of females, increases labor required and
may be more expensive than maintaining sires
6) Too much use of an unproven recent show ring or race winner
Embryo Transfer Benefits - ANS-1) extends the productivity of superior females
2) continues productive life of a female that is unable to carry young but is fertile
3) allows more rapid proof of the worth of a female
4) can shorten generation interval
5) can eliminate problems with importation restrictions
Embryo Transfer Problems - ANS-1) cost
2) response to super ovulation is variable
3) outstanding female can become infertile
4) low fertility females could be propagated
