KMID : 1025520140560010022
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Journal of Animal Science and Technology 2014 Volume.56 No. 1 p.22 ~ p.22
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Effects of sires with different weight gain potentials and varying planes of nutrition on growth of growing-finishing pigs
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Ha Duck-Min
Jung Dae-Yun Park Man-Jong Park Byung-Chul Lee C.-Young
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Abstract
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The present study was performed to investigate the effects of two groups of sires with ¡®medium¡¯ and ¡®high¡¯ weight gain potentials (M-sires and H-sires, respectively) on growth of their progenies on varying planes of nutrition during the growing-finishing period. The ADG of the M-sires¡¯ progeny was greater (P?0.05) than that of the H-sires¡¯ progeny (0.51 vs. 0.47 kg) during a 26- to 29-d early grower phase beginning from 55 d of age, but the opposite was true (0.66 vs. 0.72 kg) during the latter grower phase. Overall grower-phase ADG was greatest on the high plane of nutrition (H plane) followed by the medium (M) and low (L) planes (0.65, 0.61, and 0.51 kg, respectively; P?0.05) in the M-sires¡¯ progeny, whereas in the H-sires¡¯ progeny, ADG was greater on the H and M planes vs. L plane (0.63, 0.62, and 0.54 kg, respectively). The ADG of pigs on the M or H plane during the grower phase and switched to the H plane thereafter (M-to-H or H-to-H planes) was greater than that of pigs on the L-to-L planes (0.99 vs. 0.78 kg) during the early finisher phase in the M-sires¡¯ progeny (P?0.01). However, in the H-sires¡¯ progeny, ADG of pigs on the L-to-L planes did not differ from that of pigs on the M-to-M or H-to-M planes (0.94 vs. 0.96 kg). Results suggest that the H-to-H or H-to-M planes and M-to-M or M-to-L planes are optimal for maximal growth of the M- and H-sires¡¯ progenies, respectively.
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KEYWORD
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Sire, Progeny, Weight gain, Plane of nutrition, Growing-finishing pig
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