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논문 기본 정보

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학술저널
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한국축산학회(구 한국동물자원과학회) 한국축산학회지 한국축산학회지 제58권 제10호
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2016.1
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Background: Providing of insufficient nutrients limits the potential growth of pig, while feeding of excessive nutrients increases the economic loss and causes environment pollution. For these reasons, phase feeding had been introduced in swine farm for improving animal production. This experiment was conducted to evaluate the effects of dietary energy levels and phase feeding by protein levels on growth performance, blood profiles and carcass characteristics in growing-finishing pigs. Methods: A total of 128 growing pigs ([Yorkshire × Landrace] × Duroc), averaging 26.62 ± 3.07 kg body weight, were assigned in a 2 × 4 factorial arrangement with 4 pigs per pen. The first factor was two dietary energy level (3,265 kcal of ME/kg or 3,365 kcal of ME/kg), and the second factor was four different levels of dietary protein by phase feeding (1growing(G)-2finishing(F) phases, 2G-2F phases, 2G-3F phases and 2G-3F phases with low CP requirement). Results: In feeding trial, there was no significant difference in growth performance. The BUN concentration was decreased as dietary protein level decreased in 6 week and blood creatinine was increased in 13 week when pigs were fed diets with different dietary energy level. The digestibility of crude fat was improved as dietary energy levels increased and excretion of urinary nitrogen was reduced when low protein diet was provided. Chemical compositions of longissimus muscle were not affected by dietary treatments. In backfat thickness (P2) at 13 week, pigs fed high energy diet had thicker backfat thickness (P = 0.06) and pigs fed low protein diet showed the trend of backfat thinness reduction (P = 0.09). In addition, water holding capacity was decreased (P = 0.01) and cooking loss was increased (P = 0.07) as dietary protein level reduced. When pigs were fed high energy diet with low subdivision of phase feeding, days to 120 kg market weight was reached earlier compared to other treatments. Conclusion: Feeding the low energy diet and subdivision of growing-finishing phase by dietary protein levels had no significant effect on growth performance and carcass characteristics. Also, phase feeding with low energy and low protein diet had no negative effects on growth performance, carcass characteristics but economical profits was improved.
#Keywords: Energy #Growing-finishing pig #Growth performance #Phase feeding #Protein

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참고문헌 (41)

참고문헌 신청
AOAC / 1995 / Official Methods of Analysis / Association of Official Analytical Chemist google schola Apple JK / 2004 / Effects of dietary lysine and energy density on performance and carcass characteristics of finishing pigs fed ractopamine / J Anim Sci 82:3277~3287 google schola Baxmann AC / 2008 / Influence of muscle mass and physical activity on serum and urinary creatinine and serum cystatin C / CJASN 3:348~354 google schola Beilken SL / 1986 / Some effects on the mechanical properties of meat produced by cooking at temperatures between 50 and 60 C / J Food Sci 51:791~796 google schola Carpenter DA / 2004 / The effect of dietary crude protein concentration on growht performance, carcass composition and nitrogen excretion in entire grower-finisher pigs / Irish J Agri Food Res 43:227~236 google schola

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