Animal Husbandry - Study Mode

[#296] Length of dry period in well fed cows should be . . . . . . . . days.
Correct Answer

(B) 40 - 80

Explanation

Solution: Length of dry period in well-fed cows should be 40 - 80 days. Dry period includes the time between halting of milk removal (milk stasis) and the subsequent calving. A dry period of at least 60 days is the most economical and optimum for health, fertility and milk production. Dairy cows that are dry for fewer than 40 days will have a reduced milk output of at least 250 kgs milk in the following lactation.

[#297] Bovine viral diarrhea virus belongs to family
Correct Answer

(D) Flaviviridae

Explanation

Solution: Bovine viral diarrhea virus belongs to Flaviviridae family. Bovine viral diarrhea (BVD), bovine viral diarrhoea or mucosal disease, previously referred to as bovine virus diarrhea (BVD), is an economically significant disease of cattle that is found in the majority of countries throughout the world. The causative agent, bovine viral diarrhea virus (BVDV), is a member of the genus Pestivirus of the family Flaviviridae.

[#298] Bacteria that grow at 50° - 55°C are known as
Correct Answer

(C) Thermophiles

Explanation

Solution: Bacteria that grow at 50° - 55°C are known as Thermophiles. A thermophile is an organism a type of extremophile that thrives at relatively high temperatures, between 41° and 122°C. Thermophiles are those organisms that grow above 40°C, and have optimal growth temperatures between 50° and 55°C. Thermophiles can survive at high temperatures, whereas other bacteria or archaea would be damaged and sometimes killed if exposed to the same temperatures.

[#299] Cow pox is a
Correct Answer

(B) Viral disease

Explanation

Solution: Cowpox is a viral disease. Cowpox is an infectious disease caused by the cowpox virus (CPXV). It presents with large blisters in the skin, fever and swollen glands, historically typically following contact with an infected cow. The first description of cowpox was given by Jenner in 1798. "Vaccination" is derived from the Latin adjective vaccinus, meaning "of or from the cow".

[#300] Castration done at the age of . . . . . . . . in goat.
Correct Answer

(A) 2 - 4 weeks

Explanation

Solution: Castration is done at the age of 2 - 4 weeks in goats. Male goats are raised mainly for meat and not for breeding. For this reason males are castrated with an emasculator, or torsion forceps. The best time for castrating bucks is when they are six months old with the Burdizzo instrument. This avoids all risks of infection. Castration improves the flesh of the adult buck. A castrated male is called a wether.