Please enable JavaScript.
Coggle requires JavaScript to display documents.
Diagnosis of infertility in cow, Lye Yi Yan D17A0014, Identifying the…
Diagnosis of infertility in cow
Measured by the number of services per conception and non-return percentages
The 30 days non-return percentage is useful for early detection of breeding problems in herd.
A 60 to 90-day nonreturn, percentage 8 to 10% less than the 30-day percentage suggests too many early embryonic deaths or repeat breeders
If calving interval is less than 11 months, they are bred too soon after calving
Anestrus occurs in animals with pyometra, inadequate nutrition, cystic follicles and pregnancy
Healthy postportum cows have silent estrus more frequently early in postpartum period.
The duration of the estrous cycle is normally 18-24 days
except
:
a) Early in the postpartum period when it is 15 to 18 days
b) With acute uterine infections when it is 10 - 15 days.
Abortions
Retained fetal membranes
Metritis
Purulent discharge
Cystic follicles
Anestrus before 60 days postpartum
A purulent discharge at any time indicates infection in reproductive tract
To maintain a 12-month calving interval, cow should have first breeding at about 60 days postpartum.
Source and fertility of semen
Feeding practices
Micronutrients and Macronutrients must be adequate.
Water must be all available all time
Estrus detection procedure
Breeding at the wrong time in relation to the onset of standing estrus is the important cause of infertility.
Cows can be successfuly bred near the end of standing estrus only after accurate estrus detection
Metestrus bleeding
Normal occurence about 48 hours after the onset of estrus
If metestrus bleeding occurs before 24 hours after service, the cows are bred too late.
If it occurs more than 36 hours after service, the cows are bred too early during estrus.
Should be occuring 30 hours after service
Confirm the presence of endometritis.
Test performed on blood should include haemoglobin, protein, calcium, phosphorus, Vit A and serological examination
Detect nutritional deficiencies or previous disease conditions in herd.
Determine the presence of pathogenic organisms in the uterus and their sensitivity to antibiotics.
Lye Yi Yan D17A0014
Identifying the problem
Breeding efficiency and calving interval
Frequency of postpartum estrus
Nature of vulvar discharge
Time of breeding in relation to parturition and onset of estrus
Evaluation of feeding and management programs
Collection of samples
Uterine culture
Uterine biopsies
Blood samples