Reproductive Problems 4 H Veterinary Science Extension Veterinary
Reproductive Problems 4 -H Veterinary Science Extension Veterinary Medicine Texas Agri. Life Extension Service College of Veterinary Medicine and Biomedical Sciences Texas A&M System http: //aevm. tamu. edu
Objectives n Recognize the economic importance of reproductive n n n problems Describe infertility problems that affect the cow Describe infertility problems that affect the mare Describe infertility problems that affect the stallion Discuss the factors that cause dystocia Discuss the management of reproductive problems
n Reproductive problems are common n Recognize them n Prevent n Cull n Problems include n Ability to breed n Ability to conceive n Ability to maintain pregnancy
n Male problems n Decreased libido n Abnormal sperm production n Female problems n Estrous cycle
n Refresher n Estrous – entire cycle n Estrus – when in heat n Anestrus – not in heat Species Length of Estrous Duration of Estrus Cattle 21 d 15 h Pig 21 d 50 h Sheep 17 d 30 h Horse 21 d 7 d
Infertility problems n Infertility n Definition n n A reduced ability or inability to produce offspring Male or female
n Cow n Cystic ovaries n Reproductive tract adhesions n Anestrus n Hereditary reproductive defects n Freemartin Improper nutrition n Reproductive tract infections n n Metritis
n Mare n Seasonal breeders n Improper nutrition n Reproductive tract infections n (Metritis)
n Bulls n Cause n n Poor semen quality Reason n n Poor nutrition Testicular diseases Injury or infection of penis Lameness
n Stallions n Cause n n Poor semen quality Reason n n Poor nutrition Testicular diseases
Problems During Pregnancy n Abortion n Premature termination of pregnancy n Result from n Infections n Nutritional deficiencies n Plants n Chemicals n Drugs
n Early pregnancy loss n No sign n Body reabsorbs n Late pregnancy loss n Expelled/dead fetus n Do diagnostic
Problems at Birth n Dystocia n Condition or difficult or impossible birth n Caused by abnormal circumstance n Size of birth canal n Size of fetus n Improper position of fetus
n Can correct problems n n n Call veterinarian to assist Reposition fetus Cesarean section
Management of Reproductive Problems n Key n Careful observation n Includes n Awareness of repeat breeders n Animals that don’t breed n Dystocia problems
- Slides: 15