Diets for growing pullets containing unusual ingredients and varying concentrations of cereals, including no cereals
Title:
Diets for growing pullets containing unusual ingredients and varying concentrations of cereals, including no cereals
Author:
Auckland, J. N.
Appeared in:
British poultry science
Paging:
Volume 19 (1978) nr. 1 pages 49-54
Year:
1978-01
Contents:
1. Growing pullets (Shaver 288) were fed on diets containing about 150 or 100 g protein/kg and 800, 600, 300 or 0 g of a mixture of equal parts of wheat and barley, from 12 to 20 weeks of age. 2. Varying mixtures of dried poultry manure, dried grass, dried potato meal, poultry offal meal and tallow were substituted for the cereal portion, so that calculated metabolisable energy values and methionine and lysine concentrations were constant within each protein series. 3. Within the 150 g protein/kg series, body weight at 20 weeks of age was similar for diets containing 800, 600 and 300 g/kg cereal whereas with the cereal-free diet body weight was depressed by 10%; with the latter diet sexual maturity was also delayed by nearly 4 d though subsequent egg production was unimpaired. 4. Within the 100 g protein/kg series, body weight at 20 weeks of age and subsequent egg production, calculated either to a fixed age or for a given time spent laying, were depressed by diets containing 300 or 0 g cereal/kg, compared with diets containing 800 or 600 g/kg. 5. Dietary concentrations of dried poultry manure up to 250 g/kg had no effect on mortality.
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