Nutritive value of Eurolysine bacterial protein and Pekilo protein for growing pigs

Abstract

Digestibility and balance trials were performed with six growing pigs, to evaluate the nutritive value and protein utilization of Eurolysine bacterial protein and Pekilo protein used to replace 50 % or 100 % of soybean supplement in a barley-based diet. Eurolysine had a high content of crude protein, 67.8 % of DM, and was rich in lysine, 8.3 g/16 N, and the corresponding values for Pekilo were 49.5 % and 5,5 g/16 g N. The diets containing Eurolysine had lower digestibilities than those with Pekilo or soybean meal. With Eurolysine the digestibility values for crude protein, ether extract and N-free extract (NFE) were, respectively, 64.3 %, 35.4 % and 76.5 %, and with Pekilo 74.8 %, 28.5 % and 79.4 %. The feed values for Eurolysine were 0.82 FU/kg, 509 g DCP/kg and 12.0 MJ ME/kg DM, and those for Pekilo 0.90 FU/kg, 409 g DCP/kg and 12.6 MJ ME/kg DM. The urinary nitrogen excretion was lower with Eurolysine than with the other supplements, and the nitrogen retention and the biological values were higher (P < 0.05). Eurolysine is well suited as a protein supplement in pig feeding because of its high content of lysine. Combined with barley the protein in Eurolysine gave a high biological value.

Digestibility of amino acids in pig diets containing Eurolysine bacterial protein or Pekilo protein, with special reference to a gas chromatographic method used in amino acid determination

“…The microflora of the lower intestine may alter the concentrations of the different amino acids in the faeces (BRAUDE et al 1977, JUST 1980). However, although possibly modified by microbial activity, the amino acid digestibilities obtained in the present analysis, gave useful information and the results are in good agreement with the data on protein digestibility, nitrogen balance and growth (NÄSI 1982 a).…”

Carboxymethyl cellulose (CMC) whey product as protein source for growing pigs

“…The differences between the pigs on the various diets are very small and none was statistically significant (P>0.05). The values correspond fairly closely to those obtained in other experiments (NÄSI et al 1978, NÄSI andTANHUANPÄÄ 1981) and all lie within the normal range (SCHMIDT 1979). Blood urea was a little lower on the CMC whey diet, which EGGUM (1970) considers to be a sign of improved protein utilization.…”

Performance of laying hens on diets containing Eurolysine bacterial protein or Pekilo protein

“…When Eurolysine was used as protein in a digestibility trial with pigs the ME value obtained was 11.1 MJ/kg DM (NÄSI 1982 (SCHULZ and OSLAGE 1976). Gas chromatography gave a methionine content of only 0.6 g/16 g N. The manufacturer gives a value of 1.37 g. Methionine is the primary limiting amino acid in poultry diets and improved performance has been achieved by LD-methionine supplementation in microbial protein feeding (WALDROUP and HAZEN 1975, SCHULZ and OSLAGE 1976, WHITTEMORE et al 1978, KIISKINEN 1979.…”