Animal Husbandry - Study Mode
[#601] The heat period of buffalo is
Correct Answer
(C) 12 - 36 h
Explanation
Solution: The heat period of buffalo is 12 - 36 h. The heat cycle of the female lasts from 18 to 21 days. The first stage is called proestrus. It begins with mild swelling of the vulva and a bloody discharge. The mean length of the oestrous cycle is 21 days, with greater variation than observed in cattle. The signs of oestrus in buffalo are less overt than in cattle and homosexual behaviour between females is rare. The duration of oestrus is 5 - 27 h, with ovulation occurring 24 - 48 h (mean 34 h) after the onset of oestrus.
[#602] Mycoplasma organisms are pleomorphic in nature due to
Correct Answer
(B) Absence of rigid cell wall
Explanation
Solution: Mycoplasma organisms are pleomorphic due to absence of rigid cell walls. Mycoplasma is a genus of bacteria that lack a cell wall around their cell membranes. Peptidoglycan (murein) is absent. This characteristic makes them naturally resistant to antibiotics that target cell wall synthesis. They can be parasitic or saprotrophic. Due to the absence of cell walls these organisms can change their shape and are pleomorphic as they cannot be identified as rods, cocci or spirochetes.
[#603] Blue revolution is related to
Correct Answer
(C) Fisheries
Explanation
Solution: Blue revolution is related to Fisheries. The Blue Revolution refers to the significant growth and intensification of global aquaculture production -domestication and farming of fish, shellfish, and aquatic plants- from the middle of the 20 th century to the present, particularly in underdeveloped countries. The Blue Revolution has improved accessibility and availability of farmed fish in some regions, therefore potentially improving food and nutrient security, especially in low-income nations and rural populations.
[#604] Cold enrichment is required for the isolation of
Correct Answer
(A) Listeria monocytogenes
Explanation
Solution: Cold enrichment is required for the isolation of Listeria monocytogenes. Monocytogenes is considered a Psychrotolerant bacterium due to its ability to grow at temperatures as low as -0.4°C. This tolerance to cold stress is responsible for the frequent detection of Listeria. A culture technique employing cold enrichment at 4°C followed by selective enrichment and plating at higher temperatures (30°C) was used to isolate Listeria monocytogenes from faecal samples.
[#605] Cocoidiosis disease of poultry is caused by
Correct Answer
(A) Protozoa
Explanation
Solution: Cocoidiosis disease of poultry is caused by Protozoa. Coccidiosis which is caused by the apicomplexan parasite of the genus Eimeria has seven known species that affect the different parts of the intestinal tract of chickens. The disease which occurs by ingestion of sporulated oocyst has been associated with poor poultry management systems.