11:067:330 Lecture Notes - Lecture 22: Cottonseed Meal, Juice Vesicles, Lean Body Mass
21 Jul 2017
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Document Summary
Science of feeding pigs constantly changing pigs are constantly changing. Want strains of pigs with higher lean growth rates. Factors determining nutrient requirements: age, growth rate, environmental temperature. Disease can also increase requirements (pigs very susceptible to parasites) Most pig feeds are very digestible (>90%) and have plenty of e. Pigs are very efficient (>60% ge retained and used for maintenance / production) During first three weeks, pig consumes milk colon is small. Once solid feed intake has begun and microbial fermentation needed colon quickly grows. By day 70: colon has grown by a factor of 13 in weight and 21 in volume. Supplemented with salt, vitamin and mineral premix, and some crystalline aas for growing pigs. Large swine states predominantly in midwest where corn and soybean grown best (decreases cost of feed transport) Fat can be added to cheaply increase e density of diet. Fas fed are fas deposited in swine (pork high in polyunsat.
