(a). State two functions of each of the following... | WAEC SSCE - Animal Husbandry - 2023 (Essay)

Question 1 Report

(a). State two functions of each of the following reproductive hormones in livestock. (i) progesterone; (ii) androgen; (iii) oestrogen; (iv) luteinizing hormone
(b). Complete the table below.

Common name	Botanical name	Type of forage
Elephant grass	(i):	Grass
Tropical kudzu	(ii):	Legume
Gliricidia	(iii):	(iv):
(v):	Andropogon gayanus	(vi):
(vii):	Centrosema molle	Legume
Leucaena	leucaena leucocephala	(viii):
Bahama grass	(ix)	Grass
(x)	Panicum maximum	Grass

(c). Mention two methods of mating in animal production.

Answer

Answer Details

(a) Functions of reproductive Hormones In Livestock: (i) Progesterone Ensures implantation of fertilized Ovum, - Maintains pregnancy. Inhibits Oestrus, - Causes the development of alveoli in the mammary gland. - Supports Tactation. - Supports thyroid function. (ii) Androgen -Initiates spermatogenesis. Responsible for the development of Male secondary sexual characteristics. - maintains Sex drive/libido. - Sustains the life of sperms in the epididymis. - Reduces fat deposition. -Enhances Muscular growth. -Promotes the growth of accessory sex glands. -Enhances Skeletal growth. (iii) Oestrogen - Stimulates growth of ducts in the udder.- Promotes egg production - induces rapid multiplication of epithelium in the vagina - Increases blood supply to uterus - increases the water content of uterus. - Prepares the uterus for reception of fertilized ovum. - Stimulates the development of female secondary sex characteristics.- Increases culinary activities and mucous secretion in the vagina. (iv) Luteinizing hormone -Causes rupture of Graafian follicle. - Stimulates release of ova. - Stimulates secretion of oestrogen and progesterone.

(b) Completion of table

Common name	Botanical name	Type of forage
Elephant grass	i. Pennisetum purpureum	Grass
Tropical kudzu	ii. Pueraria phasedoides	Legume
Gliricidia	iii. Gliricidia sepium	Browse plant/legume
Gamba grass	Andropogon gayanus	Grass
Centrosema/Centro	Centrosema molle	Legume
Leucaena	leucaena leucocephala	Browse plant/legume
Bahama grass	Cynodon dactylon	Grass
Guinea grass	Panicum maximum	Grass

(c) Methods of Natural mating in Animal production: Pen mating. - Flock mating/herd mating. - Hand/stud mating. - Pasture mating.

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(a). State two functions of each of the following reproductive hormones in livestock. (i) progesterone; (ii) androgen; (iii) oestrogen; (iv) luteinizing hor...

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(a). State two functions of each of the following reproductive hormones in livestock. (i) progesterone; (ii) androgen; (iii) oestrogen; (iv) luteinizing hor...

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