Abstract
ABSTRACTThis experiment was conducted to evaluate effects of replacing ‘part’ of soybean meal (SBM) with 4% rapeseed meal (RSM) or 4% canola meal (CM) on growth performance, nutrient digestibility, blood characteristics, faecal noxious gas emission, and meat quality in finishing pigs. A total of 120 crossbred finishing pigs [(Yorkshire × Landrace)× Duroc] with an average body weight of 50.71 ± 1.97 kg were randomly divided into one of three dietary treatments according to their sex and BW (10 replicate pens with 2 barrows and 2 gilts per pen). Dietary treatments were as follows: (1) CON, a corn-SBM-based diet; (2) CM4, diet containing 4% CM originated from Korea; (3) RSM4, diet containing 4% RSM originated from India. Replacing SBM with 4% RSM or 4% CM had no effects on average daily gain, average daily feed intake, gain to feed ratio, concentrations of blood urea nitrogen and creatinine, faecal ammonia, hydrogen sulphide, and total mercaptans emission, meat quality, and apparent total tract digestibility of dry matter, nitrogen, and gross energy. In conclusion, the inclusion of 4% of RSM or CM in finishing pig diets had no negative effects on growth performance, nutrients digestibility, faecal noxious gas emission, blood characteristics, and meat quality.
Highlights
There has been an increase in economic concern movement to explore feed ingredients for swine with respect to high growth performance at a lower feeding cost
Replacing soybean meal (SBM) with 4% rapeseed meal (RSM) or 4% canola meal (CM) had no effects on average daily gain, average daily feed intake, gain to feed ratio, concentrations of blood urea nitrogen and creatinine, faecal ammonia, hydrogen sulphide, and total mercaptans emission, meat quality, and apparent total tract digestibility of dry matter, nitrogen, and gross energy
The inclusion of 4% of RSM or CM in finishing pig diets had no negative effects on growth performance, nutrients digestibility, faecal noxious gas emission, blood characteristics, and meat quality
Summary
There has been an increase in economic concern movement to explore feed ingredients for swine with respect to high growth performance at a lower feeding cost. Pigs feed uses cereal grain as a major ingredient. The other main feed ingredient is soybean meal (SBM) that has been used as a major protein source (O’Doherty et al 2001). Canola meal (CM) is a coproduct produced after oil extraction processing and is widely used as a protein ingredient in animal diets (Sanjayan et al 2014). Compared with SBM, CM contains less crude protein and amino acids and relatively high levels of fibre, which may reduce feed intake and digestibility of nutrients (González-Vega and Stein 2012). To reduce cost of ingredients, the objective of this experiment was to evaluate whether 4% rapeseed meal (RSM) or CM can replace part of SBM as a protein source in finishing pig diets
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