The apparent ileal and faecal digestibilities of amino acids and carbohydrates of rye, barley and triticale grains in pigs

Abstract

Six pigs of initial weight 40 +/- 1.7 kg with a T-piece cannula fitted at the terminal ileum were given diets composed of 96.3% of rye, barley or triticum grains ground to pass the 2.6 mm mesh, 3.3% mineral and vitamin mixture and 0.4% Cr2O3. Each diet was given to all pigs in a Latin square design, and faeces and ileal digesta were collected on 7, 8, 9 and 10, 11 and 12 day of feeding each diet, respectively. The grains varied widely in the content of pentosans, polyuroids, beta-glucan and monosaccharides. The antitrypsin activities were 0.84, 2.73 and 1.62 TUI/g in barley, rye and triticum, respectively. Ileal and faecal apparent digestibilities of nitrogen and amino acids were higher (P less than or equal to 0.01) in Triticum than in barley and rye. The digestibility of carbohydrates (pentosans, beta-glucan, polyuroids and non-structural carbohydrates) were lower in pigs fed a rye diet than of those fed a Triticum diet. The results are discussed with respect of the role to non starch polysaccharides, especially pentosans in digestibility of nitrogen and energy in animals receiving a rye diet.

Ileal digestibility of amino acids and estimates of endogenous amino acid losses in pigs fed wheat, triticale, rye, barley, maize and sorghum

“…However, in contradiction to our results, higher digestibility values in rye than in barley [53] and similar or even greater digestibility values in The effect of the species, tested against the batch nested within the species was always highly significant (P < 0.001).…”

“…These compounds may restrict the access to intracellular nutrients or raise the viscosity of the luminal content, and thereby limit the physical exposure of substrates to the digestive enzymes and to the intestinal wall [7]. The greater amounts of arabinoxylans present in rye as compared to wheat and triticale may contribute to the low digestibility of N and AA in this species [53]. Possibly, arabinoxylans in rye were involved in the restricted access of digestive enzymes to intracellular nutrients, causing a low digestibility of the protein bound to NDF.…”

“…When fed at a low concentration, they may induce an increase in endogenous N losses [3]. However, there is no evidence from the literature that protease inhibitors influence ileal digestibility of AA in cereals fed to pigs [53]. Phytate accounts for 85% of phosphorus stored in cereals.…”

“…Nitrogen (N) and amino acid (AA) ileal digestibility in cereals for pigs has been widely previously studied by many authors [19,20,22,35,38,53]. Data are expressed as ileal apparent, true or real digestibility.…”

Apparent ileal amino acid digestibility and the nutritive value of the triticale cultivars Moreno and Ulrika for growing-finishing pigs

“…The AID of crude protein was similar (P = 0.42) for barley and the triticales (Table 3). The values for both cultivars corresponded well with the data of Balogun et al (1988), whereas Rakowska et al (1990) and Haydon and Hobs (1991) reported greater values. Also, the AID of amino acids in our study was not different from the results of Rakowska et al (1990), except for lysine, arginine, and histidine.…”