Theory question 105
Animal Nutrition(a) State five benefits of feed additives in poultry diets. (b) State five importance of middlemen in marketing of eggs. (c) Name the causative agent and one animal that could be affected by each of the following farm animal diseases; (i) Anthrax; (ii) Coccidiosis; (iii) Aspergillosis. (d) State four factors associated with variation in sexual maturity within the same species of animals.
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(a) Any five: faster growth; better feed conversion; prevent diseases (antibiotics, coccidiostats); improve egg yolk colour; preserve feed (antioxidants, mould inhibitors); improve palatability; supply vitamins and minerals
(b) Any five: buy eggs from farmers in bulk; store eggs; transport eggs to markets; grade and package eggs; break bulk for retailers; give credit/finance to farmers; carry market information; bear risks such as breakage
(c)(i) Anthrax: bacterium Bacillus anthracis; cattle (also sheep, goats)
(ii) Coccidiosis: protozoan Eimeria spp.; poultry (also rabbits, calves)
(iii) Aspergillosis: fungus Aspergillus fumigatus; poultry (chicks)
(d) Any four: breed; nutrition/level of feeding; sex; health/disease; climate and season (day length); management/housing; body weight
Give both the agent and an animal for each disease.