Reproduction: Fertility Problems Flashcards
1
Q
What are the three fates of the 1st dominant follicle?
A
- Ovulate
- Turnover- LH surge not done
- Cystic
2
Q
What factors increase number of inseminations per pregnancy and calving to conception?
A
- Drop in social status
- Cesarean
- Bad calving
- Lameness
- Mastitis
- Milk fever
3
Q
Other then fertility what does lameness effect?
A
Specific behaviours
Lame cows do not respond well to synchronisation
4
Q
What risk factors lower chances of repeat breeding?
A
Dystocia
Retained placenta
Metritis
Subclinical ketosis
5
Q
How does yield affect standing oestrus?
A
Signs of standing oestrus decreases with yield
And number of silent heats
6
Q
How is reproduction affected by nutrition?
A
- Lower IGF increases time to first ovulation
- Oestradiol increased with increased IGF-1
- Post NEB- higher diameter of follicle and higher peak oestradiol
7
Q
What is the approach to solving herd problems?
A
- Focus on intervention
- Focus on resources
- Meet consumer expectations
- Manage/remove risk factors for poor fertility
