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Modern Art The Production: Broilers usually require 8 to 9 weeks to reach arket size. The average weight of all broilers arketed in the United States in a typical vear the mid-1960's was 3.5 pounds (1.6 kg), this eight, under good conditions, can be reached i from 7 to 8 pounds (3.2 to 3.6 kg) of feed, i modern art the production broiler housing, the environment can : closely regulated by proper use of heat and mtilation. Automatic mechanical systems for eding and watering are also employed. Labor Rciency in raising broilers is very high.
Egg production is also highly specialized, although not all the necessary operations are as integrated as for broiler production. Hens begin to lay at about 22 weeks of age. They are kept for a full year of egg production, after which many are sold for meat and replaced by young hens. modern art the production housing for layers generally consists of windowless houses in which ventilation and light can be precisely regulated.The poultry industry is ex-emely specialized for the production of meat id eggs. The barnyard flock of the past no nger contributes significantly to the total pro-jction of chickens. Broiler, or meat, production the United States is carried out largely by mipanies which have integrated many of the parate phases of production into one business >mplex. The hatching of chicks, the raising of •oilers, the production of feed, and the process-g and marketing of the final product may all ; done by one company.
Improvement in Dairy Cattle. Dairy cows usually produce slightly more milk if they give birth to their calves in the fall. The cooler weather and the regularity of. winter feeding is responsible for the additional production. However, because of the year-round demand for milk on most markets, dairymen are breeding their cows to freshen all year around. This is possible because with modern art the production dairy management the calves can be cared for in any season. Improvement of dairy cattle through breeding is aimed at increasing milk production, obtaining an optimum butterfat content in the milk, and improving the physical traits of a cow that might help production or contribute to length of life. Record keeping and performance measures are equally as important for dairy cattle breeding as for beef cattle. |
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