Animal Husbandry - Study Mode

[#166] Leghorn is
Correct Answer

(A) Mediterranean class

Explanation

Solution: Leghorn is Mediterranean class. The Leghorn is a breed of chicken originating in Tuscany, in central Italy. Birds were first exported to North America in 1828 from the Tuscan port city of Livorno, on the western coast of Italy. They were initially called "Italians", but by 1865 the breed was known as "Leghorn", the traditional anglicisation of "Livorno". Leghorns are good layers of white eggs, laying an average of 280 per year and sometimes reaching 300 - 320, with a weight of at least 55 g.

[#167] Oogenesis and spermatogenesis are a major physiological action of (hormone released from pituitary gland)
Correct Answer

(C) Follicle stimulating hormone

Explanation

Solution: Oogenesis and spermatogenesis are major physiological actions of (hormone released from pituitary gland) Follicle stimulating hormone. FSH is a gonadotropin, a glycoprotein polypeptide hormone. It is synthesized and secreted by the gonadotropic cells of the anterior pituitary gland and regulates the development, growth, pubertal maturation, and reproductive processes of the body. FSH stimulates the growth and recruitment of immature ovarian follicles in the ovary. FSH enhances the production of androgen-binding protein by the Sertoli cells of the testes by binding to FSH receptors on their basolateral membranes and is critical for the initiation of spermatogenesis.

[#168] When two breeds are crossed alternatively is known as
Correct Answer

(A) Criss crossing

Explanation

Solution: When two breeds are crossed alternatively is known as Crisscrossing. Mating animals belonging to two different established breeds are known as crossbreeding. A crossbreed is an organism with purebred parents of two different breeds, varieties, or populations. It is used to maintain health and viability of organisms, irresponsible crossbreeding can also produce organisms of inferior quality or dilute a purebred gene pool to the point of extinction of a given breed of organism.

[#169] The disease 'ricket' in animals occurs due to the deficiency of
Correct Answer

(C) Vitamin-D

Explanation

Solution: The disease 'ricket' in animals occurs due to the deficiency of Vitamin D. Rickets is a disorder affecting the skeleton of growing animals. Primary causes are insufficient dietary phosphorus or calcium, an inappropriate ratio between these minerals in the diet, or insufficient availability of activated vitamin D.

[#170] Sheep breeding depends mainly on
Correct Answer

(A) Season

Explanation

Solution: Sheep breeding depends mainly on Season. The animals that undergo mating only during a specific time of the year are called seasonal breeders. Sheep are seasonal breeders in temperate regions, meaning that they experience distinct periods of sexual activity or inactivity annually. Specifically, sheep are short day breeders, breeding at times of the year when the day length is shorter and night time longer.