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Digestibility and Feeding Value of B858 Triticale for Swine^1,2,

North Carolina State University, Raleigh 27695-7621

Abstract

Nutritional value of B858 triticale cultivar as a replacement for corn and part of the soybean meal in swine diets was tested with 92 crossbred weanling (28 d) pigs. Pigs were assigned to one of four isolysine dietary treatments (TRT): 1) a fortified corn-soybean meal diet, 2) a fortififed B858 triticale-soybean meal diet, 3) a fortified B858 triticale-soybean meal with L-lysine HCl diet and 4) a fortified B858 triticale-soybean meal with L-lysine HCl and DL-methionine diet. B858 triticale contained (as-fed basis) 15.99% CP, .46% lysine, .18% methione and .36% threonine. During the started phase (weaning to 25 kg), there was a tendency for reduced ADG (P < .10) and increased feed/gain ratio (F/G; P < .05) for pigs fed TRT 3 compared with pigs fed TRT 1. The reduced performance may have been due to the marginal sulfur amino acid content of TRT 3. Over the grower-finisher phase (25 to 92 kg) and the entire study the F/G was greater (P < .05) for pigs fed TRT 2 than for pigs fed all other treatment diets. Chromic oxide was added to all diets of all pigs as an indigestible marker to estimate apparent digestion coefficients during the grower phase. Digestion coefficients were similar for DM and energy. Apparent digestion of ether extract was higher (P < .05) and of CP was lower (P < .05) for TRT 1 than for any other treatment. Digestibilities of phenylalanine, methionine, glutamic acid, tyrosine and glycine were lower (P < .05) from TRT 1 than from TRT 2, 3, and 4. The B858 triticale was palatable and had very low trypsin inhibitor activity. Because of its desirable amino acid composition and nutrient digestibility, it was an excellent grain for swine feeding.

¹ Paper No. 11344 of the Journal Series of the North Carolina ARS, Raleigh, NC 27695-7601. The use of trade names in this publication does not imply endorsement by the North Carolina ARS of the products named, nor criticism of similar ones not mentioned.

² The authors express thanks to Degussa Corp. for providing DL-methionine and Heartland Lysine for providing L-Lysine HCl.

³ Contact for reprints: Dept. of Animal Science and The Interdepartmental Nutrition Program, Box 7621.

⁴ Present address: Rynsteeg8-1^a, 6708 PP Wageningen, The Netherlands.