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Neco animal husbandry answers 2021

Neco animal husbandry answers 2021

ANIMAL-HUSBANDRY-
(1a)
Spermatogenesis is the biological process of producing mature sperm cells, and occurs in the male gonad of a sexually reproducing organism

(1bi)
Progesterone
(i)It regulating menstruation.
(ii)It supporting pregnancy in the female body.

(1bii)
Prolactin
(i)It is responsibilities in milk production.
(ii)it helps in the development of mammary glands within breast tissues.

(1c)
Tabulate
-Exhalation-
(i)size of lungs decrease
(ii)thoracic cavity decrease in volume
(iii)muscle relaxes
(iv)diaphragm relaxes and become the same shape.

-Inhalation-
(i)size of lungs increase
(ii)thoracic cavity increase in volume
(iii)muscle contract
(iv)diaphragm contract and flatter

(2a)

(1)Sow; this is an adult female swine

(2)capon; this is a male chicken that has had it sex organs removed.

(3)heifer; this is a young cow that has not yet given birth to a calf

(4)dam; this is the female parent of a domestic Animal

(2b)

(i)it serves as sensory purpose

(ii)it helps in protecting the skin

(iii)it serve as waterproof material

(2c)

(i)Assure safety of handlers; castrated animals are often less aggressive and they can be handled with ease

(ii)Prevent unwanted pregnancy; castration prevent unplanned pregnancies among Animals

(iii)improves development; this is one of the main effect of castrating male Animals as it improves their weight development and carcass quality.

(5ai)

Virus

(5aii)

Through Air.

(5aiii)

(i)Fever

(ii)Loss of appetite

(iii)Weight loss

(5aiv)

(i)quarantine of infected Animals

(ii)cleaning and disinfection of infected area and equipment

(5b)

(i)Egg

(ii)Nymph

(iv)Adults

 

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