Lysine supplementation of barley wet distillers’ solids diets for growing-finishing pigs

Abstract

A growth experiment was conducted to study the effect of different lysine supplementation levels of barley wet distillers’ solids (WDS) diets on the performance and the carcass quality of pigs (25.5-95.5 kg live weight). A total of 160 pigs were divided into four groups of 40 animals. Four pigs of the same sex were placed in each pen and fed one of the four experimental diets; a barley-soyabean meal (SBM) control diet (167 g crude protein (CP) /kg dry matter (DM) and 7.6 g lysine/feed unit (FU)) or three similar barley-WDS diets (204 g CP/kg DM) which were supplemented with synthetic lysine to contain 7.7, 9.2 or 10.7 g lysine/FU. Lysine supplementation linearly improved the daily weight gain (DG) and feed conversion ratio (FCR) of the pigs during growing (1-5 weeks) (p < 0.001), finishing (6th week onward) (p < 0.001) and the whole experimental period (p < 0.001). However, during the whole growing-finishing period the performance of the pigs levelled off at the lysine level of 9.2 g/FU and daily supply of 18.0 g, respectively(quadratic effect: p < 0.05 for DG and p < 0.01 for FCR). The pigs on the SBM diet grew faster and more efficiently than did the pigs on the WDS diets with similar lysine content (p < 0.05).

Replacing dietary corn with barley seeds in Nile tilapia,Oreochromis niloticus(L.), feed

“…In Saudi Arabia, barley production increased approximately fourfold from 1991 to 1995 ( Department of Economic Studies 1996 ). Barley seeds have been used in feeds for different species such as broilers ( Angkanaporn, Ravindran & Bryden 1996; Kaldhusdal & Skjerve 1996; Swain, Johri, Shrivastav & Majumdar 1996; Marquardt, Breres, Zhang & Boros 1997), cows ( Christen, Hill & Williams 1996; Markus, Wittenberg, Ingalls & Undi 1996), young pigs ( Gabert, Jorgensen, Brunsgaard & Eggumand Jensen 1996; Valaja, Rasi, Alaviuhkola & Rantanen 1996), steers ( Boss & Bowman 1996a,b) and fish ( Al‐Asgah & Ali 1994; Al‐Ogaily, Al‐Asgah & Ali 1996). Barley is similar to yellow corn as a source of carbohydrate in animal feeds.…”

A dynamic programming model for optimising feeding and slaughter decisions regarding fattening pigs

“…For instance, adding lysine in solid or crystalline form when lysine restricts protein growth increases the daily weight gain and cost efficiency of feed conversion and can also increase carcass leanness (Valaja 1992). Supplementation at later stages of growth may sometimes level off the benefits of supplementation gained during the early stages of growth (Valaja et al 1996).…”