Effects of spray-dried porcine plasma protein on growth traits and nitrogen and energy balance in mice.
Energy and nitrogen balances of mice receiving a dried skim milk-based control diet were compared to a similar group of mice receiving a diet containing 8% spray-dried plasma protein (SDPP). Mice were housed in pairs in metabolism cages with feed and water available for ad libitum intake. Five cages were assigned to each diet for a 21-d feeding period. Mice fed SDPP gained more weight (P < .01), consumed more feed (P < .01), and had higher gain: feed ratios (G:F) (P < .01) than mice fed the control diet during wk 1. No significant differences in growth, feed intake, or G:F were detected during wk 2. During wk 3, mice receiving the control diet tended to gain more (P < .10) and had a higher G:F (P < .01). Nitrogen intake and retention were greater for mice fed SDPP (P < .02). Energy intake was greater for mice fed SDPP (P < .01); however, energy retention was not different between treatment groups due to greater (P < .01) metabolic energy losses (urinary energy+heat production). Empty gut weight was greater for control mice on an absolute basis (P < .05) and when expressed as a percentage of BW (P < .02). Liver weights of mice fed SDPP were greater on an absolute basis (P < .02) and as a percentage of BW (P < .01). Feed intake, growth rate, and G:F were increased by dietary addition of SDPP.(ABSTRACT TRUNCATED AT 250 WORDS)
Thomson
J E
JE
Department of Animal Science, North Carolina State University, Raleigh 27695-7621, USA.
Jones
E E
EE
Eisen
E J
EJ
D000818:Animals; D001798:Blood Proteins / Q000378:metabolism / Q000494:pharmacology*; D001835:Body Weight / Q000502:physiology; D004064:Digestive System / Q000033:anatomy & histology; D004435:Eating / Q000502:physiology; D004734:Energy Metabolism / Q000502:physiology*; D006321:Heart / Q000033:anatomy & histology; D008099:Liver / Q000033:anatomy & histology; D008297:Male; D051379:Mice; D009584:Nitrogen / Q000378:metabolism*; D009929:Organ Size / Q000502:physiology; D013552:Swine / Q000097:blood*
D001798:Blood Proteins; D009584:Nitrogen