Có 16+ tài liệu thuộc chủ đề "chăm sóc gà"
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Small-scale. 2 Chicken breeds 8. 2 Chicken breeds. Chicken breeds 9 Some heavier layer breeds are meatier. Medium-weight and heavy chicken breeds are raised for meat produc- tion. Cocks of medium-weight chicken breeds can also be kept for slaughtering. 2.2 Local breeds
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Intensive systems, developed for specialised breeds, are estimated to be in use for about 30% of the poultry population in Africa. Flock sizes in intensive production are normally in the thousands. In the semi-intensive production system, also known as backyard pro- duction, flocks range from 50 to 200 birds. A lot of techniques and expertise developed in intensive systems can...
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Also water is treated as a nutrient, since it is neces- sary for life. Poultry must have a continuous supply of clean fresh water so that nutrients can be absorbed and toxic materials re- moved from the body. A lack of water will reduce feed intake, seriously retarding growth and im- pairing egg production. It is undesirable to restrict any...
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Sick chickens do not produce, and profits will be lost if you have to buy medicines or if your chickens die. Some diseases can spread rapidly through a poultry flock so sick-looking birds should be housed sepa- rately and given extra care. We do not intend to describe diseases in this chapter. Eggs, meat and blood from all poultry should...
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The production of local chickens can be improved in two ways:. During this period it is also advisable to regularly replace your cocks with those of a neighbour or someone else, in order to avoid in-breeding.. You can get rid of them immediately, but sometimes it is worth keeping these slow developers in a separate space, to give them a...
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To be able to do this well, you need to have some idea of the most im- portant data of an egg-laying business.. This takes time and money, but it is the only way to make your business run effi- ciently.. The production of the whole chicken stock then rises quickly to a peak after another eight weeks. At that...