animal science
Question 1 (4 points) Question 1 Unsaved
Compare the “frequency of ovulation” in the Hen to the “frequency of ovulation” in the Cow:
-In birds ovulation and oviposition are processes controlled by LH and sex steroids including progesterone. A hen ovulates daily after LH surge (6 hrs) and ovipositioned 26.5 hours later. The LH surge shifts until it occurs with first light and no ovulation occurs.
-In cows ovulation depends on LH to have 2-3 waves to ovulate. The Estrus length is 12-19 hours and ovulation occurs 10-11 hours after the end of the estrus.
Question 2 (4 points) Question 2 Unsaved
Give a characteristic that is unique to each of the following species pertaining to the development (shape, growth etc.) of the early embryo:
a. Sow: Sows have an elongated tube on the 15 day of conception
b. Mare: A horse starts out as a sphere it does not elongate like sows but they have an increase in diameter 2 to 3 mm per day.
Question 3 (2 points) Question 3 Unsaved
Kilroy calls you and says that you have a bull in the pasture that must have “mad cow disease”; he goes on to say the bull is running around the pasture chasing after cows with his head up in the air and his upper lipped curled up – What is your response to Kilroy?
My response if that the cow is in heat, you can prove this by the lip-curl, which is called the Pheromones which helps them to attract mates.
Question 4 (4 points) Question 4 Unsaved
What is the difference between an “induced” ovulator and a “spontaneous” ovulator”?
Induced ovulator- those that require mating to stimulate ovulation (llamas)
Spontaneous ovulator- animals that ovulate out of nowhere (hen)
Question 5 (2 points) Question 5 Unsaved
Does a chicken lay an egg every day? Why or Why not:
Normal laying routines can be interrupted by molting, winter daylight shortage, temperature extremes, illness, poor nutrition, stress, or lack of fresh water. Hens usually return the disruption-causing factor ends or is
Compare the “frequency of ovulation” in the Hen to the “frequency of ovulation” in the Cow:
-In birds ovulation and oviposition are processes controlled by LH and sex steroids including progesterone. A hen ovulates daily after LH surge (6 hrs) and ovipositioned 26.5 hours later. The LH surge shifts until it occurs with first light and no ovulation occurs.
-In cows ovulation depends on LH to have 2-3 waves to ovulate. The Estrus length is 12-19 hours and ovulation occurs 10-11 hours after the end of the estrus.
Question 2 (4 points) Question 2 Unsaved
Give a characteristic that is unique to each of the following species pertaining to the development (shape, growth etc.) of the early embryo:
a. Sow: Sows have an elongated tube on the 15 day of conception
b. Mare: A horse starts out as a sphere it does not elongate like sows but they have an increase in diameter 2 to 3 mm per day.
Question 3 (2 points) Question 3 Unsaved
Kilroy calls you and says that you have a bull in the pasture that must have “mad cow disease”; he goes on to say the bull is running around the pasture chasing after cows with his head up in the air and his upper lipped curled up – What is your response to Kilroy?
My response if that the cow is in heat, you can prove this by the lip-curl, which is called the Pheromones which helps them to attract mates.
Question 4 (4 points) Question 4 Unsaved
What is the difference between an “induced” ovulator and a “spontaneous” ovulator”?
Induced ovulator- those that require mating to stimulate ovulation (llamas)
Spontaneous ovulator- animals that ovulate out of nowhere (hen)
Question 5 (2 points) Question 5 Unsaved
Does a chicken lay an egg every day? Why or Why not:
Normal laying routines can be interrupted by molting, winter daylight shortage, temperature extremes, illness, poor nutrition, stress, or lack of fresh water. Hens usually return the disruption-causing factor ends or is