@article {ODoherty:1 January 2001:1097-0010:135, author = "ODoherty J.V.", author = "McGlynn S.G.", author = "Murphy D.", title = "The effect of expander processing and pelleting on the nutritive value of feed for growing and finishing pigs", journal = "Journal of the Science of Food and Agriculture", volume = "81", year = "1 January 2001", abstract = "

Two experiments were conducted to determine the effect of pelleting and/or expander processing on the nutritive value of feed when fed to growing and finishing pigs. Experiment 1 determined the effects of pelleting and/or expander processing on the apparent nutrient digestibility of the diets. In experiment 2, productive performance and carcass characteristics were determined in group-fed pigs (n = 312) offered identical diets in raw pellet form (T1), expander-processed pellet form (T2), raw meal form (T3) and expander-processed meal form (T4). The expanded diets were expander processed at 105 °C for 5 s at 35 bar pressure. The pellet diets were steam pelleted at 85 °C into 3.0 mm pellets. Pelleting of the diets increased organic matter (P < 0.05), protein (P < 0.01), energy (P < 0.01) and ash (P < 0.01) digestibility as well as the digestible energy (DE) content of the diets (P < 0.01). Expander processing had no effect on the organic matter, protein and energy digestibility of the diets. There was a significant interaction (P < 0.05) between pelleting of the diet and expander processing in DE content of the diets. Expansion had no effect on the DE content of the pelleted diets; however, expansion increased the DE content of the meal diets (P < 0.05). In experiment 2 there was a significant interaction between the physical form of the diet and expansion in feed intake during the grower and finisher period (P < 0.01). Expander processing had no effect on feed intake in the pelleted diets; however, expansion decreased feed intake of the meal diets (P < 0.001). Both pelleting and expansion of the diets decreased growth rate during the grower and finisher period (P < 0.05). Pelleting of the diets improved feed conversion ratio (FCR) during the grower and finisher period (P < 0.05), while expander processing had no effect on FCR.

© 2000 Society of Chemical Industry

", pages = "135-141(7)", url = "http://www.ingentaconnect.com/content/jws/jsfa/2001/00000081/00000001/art00791" doi = "doi:10.1002/1097-0010(20010101)81:1<135::AID-JSFA791>3.0.CO;2-F" }