Animal Husbandry - Study Mode
[#581] Female Hen has a following set of chromosomes
Correct Answer
(B) Xw
[#582] Yellow fever is transmitted by
Correct Answer
(A) Ades aegypti
Explanation
Solution: Yellow fever is transmitted by Ades aegypti. Yellow fever is a viral disease of typically short duration. In most cases, symptoms include fever, chills, loss of appetite, nausea, muscle pains particularly in the back and headaches. The disease is caused by the yellow fever virus and is spread by the bite of an infected mosquito, primarily by Aedes aegypti, a type of mosquito found throughout the tropics and subtropics.
[#583] Amino acid precursor of lignin
Correct Answer
(A) Phenylalanine
Explanation
Solution: Amino acid precursor of lignin is Phenylalanine. Lignin is a class of complex organic polymers that form key structural materials in the support tissues of most plants. The biosynthesis begins in the cytosol with the synthesis of glycosylated monolignols from the amino acid phenylalanine. The reactions are shared with the phenylpropanoid pathway.
[#584] Chemical used for dehorning is
Correct Answer
(B) Caustic potash
Explanation
Solution: Chemical used for dehorning is Caustic potash. Removing horns by disbudding or dehorning is a common management practice to reduce the risk of injury and bruising to other cattle. Caustic potash or caustic soda is the common chemical used for dehorning. These are available in the form of paste or solution. Clip the hair around the horn buds and surrounding area, and a ring of Vaseline to protect the eyes against chemicals.
[#585] Crude fibre in roughages
Correct Answer
(A) > 18%
Explanation
Solution: Crude fibre in roughages is > 18%. Crude fibre is the insoluble residue of acid hydrolysis followed by an alkaline one. This residue contains true cellulose and insoluble lignin. It is also used to assess hair, hoof, or feather residues in animal by-products. The National Research Council classifies a roughage as a feedstuff with a minimum crude fiber content of 18% and a maximum content of total digestible nutrients (TDN) of 70%. Roughages provide a range of nutrients to animals.