Animal Husbandry - Study Mode
[#231] Which of the following is incorrect match?
Correct Answer
(D) Acid fast stain - Staphylococci
Explanation
Solution: A. Diene's stain - Mycoplasma It involves the use of Diene's stain, which is widely used to detect animal mycoplasmas and plant spiroplasmas in culture. Diene's stain was prepared by dissolving 2.5 g of methylene blue, 1.25 g of azure II, 10.0 g of maltose, and 0.25 g of sodium carbonate in 100 ml distilled water. B. Fontana stain - Spirochaetes Masson-Fontana silver stain provides direct evidence of spirochaetes and hence can be used as a supplemental or confirmatory test for primary syphilis. C. Machiavello stain - Chlamydia The Macchiavello technique is very widely used in rickettsia, especially for infected yolk sacs, and chlamydia even though the colour differentiation of the rickettsiae is undependable and usually of low contrast. D. Acid fast stain - Staphylococci is not correctly matched. Staphyloccocus aureus is non-acid-fast bacteria, which upon treatment with acid-alcohol solvent, loses the primary red colour, due to the absence of mycolic acid in gf `its cell wall. This step is followed by the addition of a counterstain, methylene blue. This stains Staphyloccocus aureus blue.
[#232] Pat in separated milk is not more than
Correct Answer
(A) 0.1%
Explanation
Solution: Fat in separated milk is not more than 0.1%. Most skim milk is created by spinning whole milk in a centrifuge so that the fat droplets separate. To make low-fat milk, one can simply mix skim and whole milk in a fixed ratio. The fat content of skim milk is 0 - 0.1%.
[#233] Order of tolerance of aflatoxin
Correct Answer
(C) Guinea fowl > Chicken > Duck
Explanation
Solution: Order of tolerance of aflatoxin is Guinea fowl > Chicken > Duck. The presence of aflatoxin B 1 (AFB 1 ) in poultry diets decreases the hatchability, hatchling weight, growth rate, meat, and egg production, meat and egg quality, and vaccination efficiency, as well as impairing the feed conversion ratio and increases the susceptibility of birds to disease and mortality. It is greatest in Guinea fowl, then in Chicken followed by Duck.
[#234] For production of 1 ml of milk . . . . . . . . ml of blood passes through udder.
Correct Answer
(C) 400 - 500
Explanation
Solution: For production of 1 ml of milk 400 - 500 ml of blood passes through udder. To produce 1 liter of milk 500 liters of blood have to pass through the udder. When a cow produces 60 liters of milk per day, 30,000 liters of blood are circulated through the mammary gland. This represents a blood flow of 1250 liters per hour.
[#235] Which of the following is a spindle-shaped glandular stomach of the bird?
Correct Answer
(A) Proventriculus
Explanation
Solution: Proventriculus is a spindle-shaped glandular stomach of the bird. The avian stomach is divided into a proventriculus and ventriculus or gizzard. The proventriculus is a glandular stomach producing digestive enzymes similar to the stomach in dogs and cats.