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Effect of spray-dried porcine plasma protein on feed intake, growth rate, and efficiency of gain in mice



Effect of spray-dried porcine plasma protein on feed intake, growth rate, and efficiency of gain in mice



Journal of Animal Science 72(10): 2690-2695



One hundred eight mice were weaned at 21 +/- 1 d and allotted to four dietary treatments: 1) control, 2) control + 4% spray-dried porcine plasma protein (SDPP), 3) control + 8% SDPP, and 4) control + 12% SDPP. Daily gain for males increased with increasing SDPP during wk 1 (P < .01), wk 2 (P < .01), and for the entire 3 wk (P < .01). Daily gain increased quadratically with increasing SDPP for females during wk 1 (P < .05). During the 3rd wk, ADG decreased for females with increasing SDPP ( P < .05). Daily feed intake increased linearly (P < .01) with increasing SDPP in all periods. Gain-to-feed ratio (G/F ) increased with increasing SDPP during wk 1 ( P < .01) and for the first 2 wk (P < .05). During wk 3, G/F decreased with increasing SDPP level (P < .01). Gain-to-feed ratio of females responded quadratically to increasing SDPP during wk 1 ( P < .05), whereas G/ F of males increased linearly with increasing SDPP level. Gain-to-feed ratio for the entire trial was unaffected by treatment among females ( P = .82) but increased linearly with increasing SDPP levels among males (P < .01). Liver weight increased quadratically with increasing SDPP levels for males (P < .05) and females (P < .05). Treatment effect on liver weight per kilogram BW(.75) approached significance (P < .10) in females. Male liver weight/100 g BW and liver weight per kilogram BW 75 responded quadratically to increasing SDPP levels (P < .05). Gonadal fat pad weights were unaffected by treatment. We conclude that mice respond to dietary inclusion of SDPP with increases in ADFI, ADG, and G/F during the period immediately after weaning and may, therefore, serve as appropriate models for pig responses to SDPP.

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Accession: 002604857

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PMID: 7883628



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