Animal Husbandry - Study Mode

[#396] Best pH for semen preservation
Correct Answer

(A) 6.8

Explanation

Solution: Best pH for semen preservation is 6.8. A high or low semen pH can kill sperm or affect how well they can move or can penetrate an egg. White blood cell count. A high number of white blood cells and bacteria in the semen may be a sign of infection. Sperm banking is the process of collecting, freezing and storing sperm. It's also called sperm freezing or sperm cryopreservation.

[#397] Egg production starts in poultry at the age of
Correct Answer

(A) $$5frac{1}{2}$$ months

Explanation

Solution: Egg production starts in poultry at the age of $$5frac{1}{2}$$ months. Birds usually start to lay at around five months (20 - 21 weeks) of age and continue to lay for 12 months (52 weeks) on average, laying fewer eggs as they near the moulting period. During ideal day length (14 - 16 hours of light) and with adequate nutrition, housing, and management, hens (depending on breed) should begin producing eggs when they are 18 - 22 weeks old.

[#398] Which of the following breed carpet wool?
Correct Answer

(D) All of these

Explanation

Solution: Magra, Nali and Chokla breed carpet wool. The Magra sheep breed also known as Bikaneri provides lustrous carpet wool. Magra sheep flocks have extremely white and lustrous fleece. Nali breed is used for wool and meat production and is not used for milk production. The average wool yield is 1.5 - 3kg. Chokla is fine carpet wool Indian sheep and is reared basically for its wool quality and suitability for migration. Chokla grows the finest carpet wool.

[#399] The oestrus cycle of goat is
Correct Answer

(A) 21 days

Explanation

Solution: The oestrus cycle of goat is 21 days. In goats, the length of the estrous cycle is an average of 21 days but can vary between 18 and 24 days. Average duration of estrus is 36 hours. However, the oestrus stage may last 12 to 48 hours, depending on breeds and environmental factors, such as the presence of a buck and the season. This cycle is characterized by four periods that are estrus, metestrus, diestrus, and proestrus. The oestrus or heat phase lasts 12 - 48 hours.

[#400] Which of the following method is best for age determination of animal?
Correct Answer

(A) Dentation

Explanation

Solution: Dentation is best for age determination of animals. Cattle dentition is generally used as an indicator of age when actual birthdates are not available. Eruption times and wear of the teeth are the major factors used to estimate bovine age. The central pair of temporary incisors are replaced by permanent ones which attains full growth by 2 years. The fourth permanent incisors erupt after 30 months. The second pair of incisors is fully developed at 3 years.