Source:http://linkedlifedata.com/resource/pubmed/id/17093225
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
12
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pubmed:dateCreated |
2006-11-9
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pubmed:abstractText |
An experiment was carried out to evaluate the metabolic utilization of energy in crossbred barrows during feed restriction and subsequent refeeding. Ten pigs, initially weighing 52 kg, were used in 5 blocks of 2 littermates each. A 7-d adaptation period (P1) was used in which pigs were offered feed at 2.60 MJ of ME.kg of BW(-0.60).d(-1). This adaptation period was followed by a 7-d period (P2), in which 1 pig of each block continued to receive feed at the same level of feeding, whereas for its littermate a 40% reduction in feed intake was imposed (i.e., 1.55 MJ of ME.kg of BW(-0.60).d(-1)). During the subsequent 7-d period (P3), both pigs were offered feed at 2.60 MJ of ME.kg of BW(-0.60).d(-1). After P3, pigs were fasted for 1 d. Heat production (HP) was measured for all pigs during the last 3 d of P1 and on all days for P2 and P3. Heat production was measured using an open-circuit respiration chamber. Energy and N balances were determined for P1, P2, and P3. The HP was partitioned into HP due to physical activity, the short-term thermic effect of feeding, and resting HP. Feed restriction during P2 decreased (P < 0.01) total HP, resting HP, short-term thermic effect of feeding, and retained energy, whereas HP due to physical activity was not affected by feed restriction (P = 0.50). Likewise, fecal and urinary N loss, protein gain, lipid gain, and ADG were reduced during feed restriction (P < 0.01). There were no differences in components of HP and metabolic utilization of energy between the 2 groups during P1 and P3. Nevertheless, urinary N loss was decreased (P < 0.05) and ADG increased (P < 0.01) during P3 for pigs that were restricted in P2. Compensatory growth after a period of feed restriction does not seem to be related to a change in the metabolic utilization of energy for gain but more likely is due to gain in water and gut contents.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
1525-3163
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pubmed:author | |
pubmed:issnType |
Electronic
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pubmed:volume |
84
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
3329-36
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:17093225-Animal Feed,
pubmed-meshheading:17093225-Animal Nutritional Physiological Phenomena,
pubmed-meshheading:17093225-Animals,
pubmed-meshheading:17093225-Diet,
pubmed-meshheading:17093225-Energy Metabolism,
pubmed-meshheading:17093225-Food Deprivation,
pubmed-meshheading:17093225-Male,
pubmed-meshheading:17093225-Nitrogen,
pubmed-meshheading:17093225-Swine
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pubmed:year |
2006
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pubmed:articleTitle |
Effects of feed restriction and subsequent refeeding on energy utilization in growing pigs.
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pubmed:affiliation |
Universidade Federal de Santa Maria, Departamento de Zootecnia, Santa Maria, RS 97105-900, Brazil. lovatto@smail.ufsm.br
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pubmed:publicationType |
Journal Article
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