Animal Husbandry - Study Mode

[#346] Which of the following is most important in inhibiting the digestibility of paddy straw?
Correct Answer

(B) Silica

Explanation

Solution: Silica is most important in inhibiting the digestibility of paddy straw. The presence of silica in the outer layer of rice straw reduces enzymatic hydrolysis and ethanol production yield. Silica removal from rice straw was investigated through various alkali treatments. The results showed that sodium carbonate could effectively remove silica from the straw (> 91%).

[#347] Maize fodder (green) is comes under the grade in quality
Correct Answer

(D) Poor

Explanation

Solution: Maize fodder (green) comes under poor grade in quality. Maize green forage has a relatively low protein content (3 - 13% of DM) and a high fibre content (crude fibre 19 - 36% of DM). Depending on the stage of harvesting, it can be rich in starch (up to 30% of DM or more) and, therefore, a source of energy.

[#348] The largest nematode of domestic animal is
Correct Answer

(B) Dioctophyma renale

Explanation

Solution: The largest nematode of domestic animals is Dioctophyma renale. The Dioctophyma renale is a worldwide occurring nematode, known as giant kidney worm. It is the largest parasite nematode infecting domestic animals. Parasitism by this nematode has been described in different animal species, including in humans.

[#349] The dose of a drug that kills 50% of the population is known as
Correct Answer

(B) LD 50

Explanation

Solution: The dose of a drug that kills 50% of the population is known as LD 50 . LD stands for "Lethal Dose". LD 50 is the amount of a material, given all at once, which causes the death of 50% (one-half) of a group of test animals. The LD 50 is one way to measure the short-term poisoning potential (acute toxicity) of a material. The LD 50 can be found for any route of entry or administration but dermal (applied to the skin) and oral (given by mouth) administration methods are the most common.

[#350] Seasonal breeders are
Correct Answer

(D) Sheep

Explanation

Solution: Seasonal breeders are Sheep. 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.