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Автор Thomke, Sigvard
Автор Alaviuhkola, Timo
Автор Madsen, Arne
Автор Sundstøl, Frik
Автор Mortensen, Hans Peder
Автор Vangen, Odd
Автор Andersson, Kristina
Дата выпуска 1995
dc.description AbstractThis investigation was performed to study the effects of restricted versus ad libitum feeding on carcass composition, on protein and fat accretion and on body development and organ weights. The carcass composition was evaluated on 168 pigs by serial slaughter at 20, 50, 80 and 110 kg LW. The chemical composition was examined in only 62 of these animals. The carcasses were partitioned into four cuts and dissected into lean meat, fatty tissue, rind and bones. Ad libitum feeding resulted in daily weight gain exceeding restricted feeding in the three weight ranges by 42%, 17% and 7% and feed conversion ratios by 3%, 15% and 9%, respectively. Castrated males exceeded daily weight gains of females by 6%. At 20 kg the carcass moisture content was 65% for both sexes, which on average over feed regimens at 110 kg decreased to 56% and 52% for females and castrated males, respectively. Correspondingly, the carcass crude fat (CF) content increased from 13% to 24% and 30%, respectively. At 110 kg LW on restricted feeding the carcass meat content of females exceeded that of castrated males by 1.7, and on ad libitum feeding by 3.9 percentage units; correspondingly, carcass fatty tissue of castrated males exceeded those values for females by 0.5 and 3.9 percentage units, respectively. Daily carcass crude protein (CP) accretion on ad libitum feeding for females and castrated males for the interval 22–111 kg LW was, on average, 95 g. Daily caracass CF accretion on ad libitum feeding exceeded that on restricted feeding by 34%. Ad libitum fed castrated males and females showed daily CF accretion rates of 231 g and 158 g, respectively. Ad libitum feeding increased weights of liver over restricted feeding by 12% (P < 0.01) and kidneys by 21% (P < 0.001). Feed regimen also influenced CF content of muscles. It is concluded that feed regimen influenced carcass CP content at slaughter only to a limited extent, but greatly influenced daily CP accretion. However, carcass CF content and daily CF accretion were largely influenced by feed regimen and sex. These differences became manifest after 50 kg LW. Feed regimen also influenced liver and kidney weights.
Формат application.pdf
Издатель Taylor & Francis Group
Копирайт Copyright Taylor and Francis Group, LLC
Тема Ad libitum feeding
Тема amino acid composition
Тема carcass composition
Тема meat quality
Тема organ weights
Тема serial slaughter
Название Dietary Energy and Protein for Growing Pigs: 2. Protein and Fat Accretion and Organ Weights of Animals Slaughtered at 20, 50, 80 and 110 kg Live Weight
Тип research-article
DOI 10.1080/09064709509410914
Electronic ISSN 1651-1972
Print ISSN 0906-4702
Журнал Acta Agriculturae Scandinavica, Section A – Animal Science
Том 45
Первая страница 54
Последняя страница 63
Аффилиация Thomke, Sigvard; Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences
Аффилиация Alaviuhkola, Timo; Agricultural Research Station, Pig Research Centre
Аффилиация Madsen, Arne; National Institute of Animal Science, Foulum
Аффилиация Sundstøl, Frik; Department of Animal Science, Agricultural University of Norway
Аффилиация Mortensen, Hans Peder; National Institute of Animal Science, Foulum
Аффилиация Vangen, Odd; Department of Animal Science, Agricultural University of Norway
Аффилиация Andersson, Kristina; Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences
Выпуск 1
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