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Growth and body composition of young entire male pigs fed diets of differing ingredient composition and nutrient quality
Author(s) -
Tullis J. Bronwyn,
Henderson Ruth,
Whittemore Colin T.
Publication year - 1980
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740310609
Subject(s) - ingredient , composition (language) , dry matter , nutrient , zoology , biology , body weight , food science , chemical composition , chemistry , endocrinology , ecology , philosophy , linguistics , organic chemistry
Twenty‐eight pairs of entire male Large White pigs of 5.59 kg liveweight were grown to 25 kg. They were offered two diets of different nutrient density and ingredient content: the diets (S and C) contained 16 and 15 MJ DE (digestible energy) and 235 and 214 g CP (crude protein) kg −1 dry matter, respectively. A liveweight of 25 kg was reached in 43.4 days by pigs given diet S and in 57.5 days by pigs given diet C ( P < 0.001). Total feed intakes were 33.6 and 42.5 kg( P < 0.001), respectively, but differences in daily feed intake (0.81 and 0.76 kg) were not significant. Chemical composition of the empty body was not affected by nutritional regime (12.4% lipid, 15.8% protein). The mean daily rates of protein deposition over the 5.59 to 25 kg growth phase were 64 g (S) and 55 g (C).