Swine 5 Flashcards
What is Altrenogest (Matrix) FDA approved for its use in swine to do?
To synchronize the estrous cycle in sexually mature gilts that have had at least one estrous cycle
The use of altrenogest will result in what?
Estrus 4-9 days after completion of the 14 day treatment period
How is altrenogest administered?
As a top-dressing on a portion of gilt’s daily feed allowance
What percentage of pigs, in a study, were bred within 9 days of altrenogest withdrawal?
90%
What is oxytocin FDA approved for in swine?
Induction or enhancement of uterine contraction at parturition, treatment of postpartum retained placenta and metritis, uterine involution after manual correction of prolapsed uterus and treating agalactia
What is the protocol for using oxytocin for uterine contractions?
10 units IM and then repeat no sooner than 30 minutes if necessary - do not use too much
What can dexamethasone be used for off label?
an abortifacient
What is Cloprostenol used for?
To induce luteolysis, expulsion of mummified fetus, luteal cysts, induced abortions after mismating, and to schedule estrus and ovulation for controlled breeding
What is Dinoprost (Lutalyse) FDA approved for use as?
A luteolytic agent for estrous synchronization, unobserved (silent) estrous, pyometra, and an abortifacient
What are the two primary products in swine for induction?
Lutalyse (Dinoprost) - label
Estrumate (Cloprostenol) - off label
Generally, how quickly after injection of induction agents do swine begin to farrow?
24-36 hours
What is the correlation between induction, stillborns, and pre-wean mortality?
Inducing you may reduce stillborns, but conversely increase % pre-wean mortality, if you induce too early
What is PG600 used for?
The induction of fertile estrus in prepubertal (non-cycling) gilts or for induction of estrus in healthy weaned sows experiencing delayed return to estrus
PG 600 is only for use in what age and weight of gilts?
Gilts over 5.5 months old and weighing at least 85 kgs
What is HNS (heat no service)?
Observing an estrus cycle, but not breeding the female
True or False: It is better to do aggressive heat checking and skip the first heat than to use PG-600 on gilts and force estrus
True
PG600 can be use for P1 sows at weaning to do what?
to improve the number of sows that come back into estrus (shortly after weaning) and be bred but there is no improvement in farrowing rate
Basically you are shortening their wean - estrus interval
How does PG600 affect lost pigs born alive?
1.2 pigs lost in born alive per litter when using PG600
What is Improvest (gonadotropin releasing factor - diptheria toxoid conjugate) used for?
The temporary immunological castration
What does Improvest do in boars?
Suppression of testicular function and reduction of boar taint in intact male pigs intended for slaughter
What are the other benefits of Improvest?
Improvements in feed efficiency, improvements in average daily gain, livability improvement - $3-4 dollars per head more
What is triptorelin acetate (OvuGel) used for?
The synchronization of time of insemination in weaned sows to facilitate a single fixed-time artifical insemination
How quickly does ovulation occur after administering OvuGel?
It induces ovulation 40-48 hours post-application
How is OvuGel administered?
Intra-vaginally approximately 96 hours after weaning
What is OvuGel not approved for use in?
gilts
