Lecture 5

Question 1

Factors affecting male infertility?

Answer 1

High energy intake
Low antioxidant intake
Low fruit and veg intake
High red meat intake

Question 2

What are normal sperm cells?

Answer 2

Progressively motile

Question 3

What is the main reason for culling in cattle?

Answer 3

Infertility (30-40%)

Question 4

What are the main reasons for embryonic loss?

Answer 4

Chromosomic abnormalities, overnutrition, heat stress, endocrine deficiency, overcrowding in uterus

Question 5

What are the average times of embryonic loss in a pig?

Answer 5

Days 9-12

Question 6

What are the average times of embryonic loss in a sheep?

Answer 6

Days 8-14

Question 7

What is the average time for embryonic loss in a cow?

Answer 7

Day 17 ~

Question 8

What are the average times for embryonic loss in a mare?

Answer 8

Day 14-15

Question 9

What is brucellosis?

Answer 9

Caused by Brucella abortus - abortion usual sign of disease

Question 10

What is leptospirosis?

Answer 10

Caused by Leptospia hardjo - highest abortion rate occurs in last 3 months of gestation

Question 11

What is Bacillus licheniformis?

Answer 11

Abortions are common - occurs in late pregnancy and found in drinking water

Question 12

What is Trichomonas fetus?

Answer 12

Protozoan parasite