The utilization of hydrolysed feather meal as a protein source in pig [swine] and poultry [chickens] rations
1982
Khajarern, S. | Khajarern, J. | Phalaraksh, K. | Churasatein, S.
In the first trial, 33 piglets of blanced breed and sex were randomly allotted to receive diets containing feather meal protein at 0, 25 or 50% of dietary protein from about 23 to 100 kilogram body weight. In the second trial, 150 one-day-old Arbor-Acres broiler chicks were randomly divided into 10 groups two of which received 23% protein corn-soybean meal diets containing feather meal at 0, 2, 4, 6 or 8 percent to 9 weeks of age. The growing-finishing pigs could fully utilize feather meal protein as it represented a level not over 25% of the dietary protein. At this level, there were no significant differences in growth performance and carcass characteristics of pigs when compared to the control. At 50% substitution, there was a noticeable growth depression. With broilers, the starting chicks (0 -4 weeks of age) could efficiently utilize feather meal at the level not over 4% of the ration. The finishing chicks (over 4 weeks of age) could make full use of 8% feather meal in the rations. There were no significant differences in feed conversion ratio or carcass quality. Economic evaluation in these trials indicated that there was a consistently progressive gain by substituting hydrolysed feather meal for the conventional protein sources in pigs and poultry rations. The feasibility of combining feather meal to low protein feedstuffs, such as cassava, was discussed
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