Nutritive value of evening primrose (<i>Oenothera paradoxa</i>) cake for ruminants

Abstract

The nutritive value of evening primrose (Oenothera paradoxa) oil cake was estimated from chemical composition and nutrient digestibility. The cake contained on average (per kg): 210 g crude protein, 0.55 UFL, 0.44 UFV, 110 PDI (PDIE -PDIN = -22 g), 92 g PDIA and 100 g of ether extract. The proportion of methionine and cystine in cake was relatively high (1.97 and 2.17 g/16 g N) but that of lysine was rather low (2.00 g/16 g N). Linoleic (C 18 . 2n6 ) -73.1%, y-linolenic (C 18 . 3n6 ) -9,0% and oleic (C 181 n9 ) -6.4% acids dominated in total fatty acid content. Rumen degradability and intestinal digestion coefficients of protein of evening primrose oil cake or seeds were 0.39 and 0.65, respectively.

Performance and body fat composition of fattening bulls fed diets with evening primrose (<i>Oenothera paradoxa</i>) oil cake

“…Rumen degradability of feed protein (deg) and intestinal digestibility of rumen undegraded feed protein (PDIA) coefficients were the same as in our previous work (Stasiniewicz et al, 1998), 0.39 and 0.65, respectively.…”

“…1.2.6 (1993) software according to the INRA (IZ, 1993) system. The values of protein degradability coefficients in the rumen (deg) and intestinal digestibility of feed protein undegraded in the rumen (PDIA) were obtained as in our previous experiment on the same batch of evening primrose oil cake (Stasiniewicz et al, 1998).…”

“…The nutritive value and composition of evening primrose {Oenothera para doxa) oil cake for ruminants indicates that it can be used as a supplementary feed for balancing protein and energy since it contains a relatively high level of methio nine and a low level of lysine (Stasiniewicz et al, 1998). Moreover, the fat in evening primrose contains a high proportion of poly-unsaturated fatty acids, par-ticularly of y-lmolenic (C 183n6 ) and linoleic (C lg .…”

“…Moreover, the fat in evening primrose contains a high proportion of poly-unsaturated fatty acids, par-ticularly of y-lmolenic (C 183n6 ) and linoleic (C lg . 2n6 ) acids (Hudson, 1984;Lammer-Zarawska, 1992;Stasiniewicz et al, 1998) which can be absorbed from the digestive tract and deposited in animal products, favourably influencing their quality (Wright et al, 1974;Huhtanen and Poutiainen, 1985;Murphy et al, 1990;Strzetelski et al, 1992aStrzetelski et al, , 1993.…”

Milk yield and composition in dairy cows fed a diet with evening primrose (<i>Oenothera paradoxa</i>) full fat seeds or oil cake

“…Previous studies on the nutritive value and effect of feeding evening primrose oil cake as a diet component on beef quality, milk composition, calf performance and nutrient digestibility and utilisation have already been published (Stasiniewicz et al, 1998;Strzetelski et al, 1998 a, b,c).…”