High protein soybean as a source of protein and ...
|Title||High protein soybean as a source of protein and energy for starter pigs|
|Author(s)||Mary A. McNiven, A. G. Castell|
|Journal||Canadian Journal of Animal Science|
|Abstract||A new type of soyabean, AC Proteus, containing higher protein than conventional cultivars was evaluated using Landrace x Hampshire pigs, weighing about 10 kg. In the first trial, AC Proteus was included at 0, 4, 8, 12, 16 or 20% of the isonitrogenous and isoenergetic soyabean meal-based diets and fed to 96 pigs until their average liveweight exceeded 21 kg. In the second trial with 108 pigs, AC Proteus was included at 0, 3.5, 7, 10.5 or 14% of the diet, and a conventional soyabean, Baron, was included at 0, 4.4, 8.8, 13.3 or 17.7% of the diet on an isoenergetic and isonitrogenous basis until they reached 25 kg. Amino acid concentrations in AC Proteus on an air-dry basis were higher than those in the Baron soyabean. In the first trial, inclusion of AC Proteus at higher levels appeared to decrease feed intake and rate of gain, although this appeared to be due to lower levels of amino acids in the diets and overheating of the roasted soyabean. In the second trial, inclusion of either type of soyabean had no effect on feed intake, rate of gain or feed conversion efficiency. At higher levels of inclusion of AC Proteus, feed intake was reduced slightly. AC Proteus appears to be an excellent source of protein and energy in starter pig diets and gives equivalent growth responses compared with soyabean meal or conventional soyabean..|
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