Animal Husbandry - Study Mode
[#146] Rate limiting enzyme in cholesterol biosynthesis
Correct Answer
(B) HMG-CoA reductase
Explanation
Solution: Rate limiting enzyme in cholesterol biosynthesis is HMG-CoA reductase. The biosynthetic pathway of cholesterol proceeds through several intermediates and involves different enzymes. The rate-limiting step of cholesterol synthesis is the enzyme 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase that synthesizes mevalonate starting from HMG-CoA.
[#147] More water found in the milk of
Correct Answer
(C) Human
Explanation
Solution: More water is found in the milk of humans. Breast milk or mother's milk is milk produced by mammary glands located in the breast of a human female. Breast milk is the primary source of nutrition for newborns, containing fat, protein, carbohydrates (lactose and human milk oligosaccharides) and variable minerals and vitamins. The milk of mammals that nurse frequently (including human babies) is less rich, or more watery, than the milk of mammals whose young nurse less often. Human milk is noticeably thinner and sweeter than cow's milk.
[#148] Maximum sheep population in
Correct Answer
(B) Australia
Explanation
Solution: Maximum sheep population in Australia. Australia has the third-largest sheep population at 74.722 million which is around 6.3% of the global population. New Zealand has one of the highest sheep to human ratios in the world with 5.1 sheep to every person.
[#149] Strauss reaction is positive for
Correct Answer
(D) All of these
Explanation
Solution: Strauss reaction is positive for Brucella abortus, Pseudomonas mallei and Actinobacillus ligneresii. The Straus reaction is seen in male guinea pigs inoculated intra peritoneally with infective material containing either P. pseudomallei or P. mallei. The reactions of swelling of the testes, inflammation of the tunica vaginalis and ulceration of the scrotal skin develop in 2 - 3 days.
[#150] Colostrum prevent against
Correct Answer
(D) All of these
Explanation
Solution: Colostrum prevents Calf scours, Night blindness, and Navel ill. Colostrum is the perfect first food for the newborn. It has significant advantages for newborns and mothers. It contains antibodies such as IgA, IgG, and IgM that protect against bacterial, viral, and fungal infections. It contains immunoglobulins produced by the cow's immune system and protects the calf against diseases present in the herd. Lutein is one of the reasons colostrum (first milk expressed during breastfeeding) is yellow and is rich in vitamin A, which helps against night blindness. Navel ill infections can be prevented by adequate navel treatment in calves and adequate passive antibody transfer through colostrum.