Effect of ileo-rectal anastomosis and post-valve T-caecum cannulation on growing pigs. 1. Growth performance, N-balance and intestinal adaptation.
The effects of post-valve T-caecum (PVTC) cannulation and end-to-side ileo-rectal anastomosis (IRA) on growth performance, nitrogen retention and intestinal fermentation were measured in growing pigs by comparison with a control group of intact animals. There were no differences between PVTC-pigs and intact pigs in growth performance and N balance. In IRA-animals reduced growth (P < 0.01), less efficient feed conversion (P < 0.01) and decreased N retention (P < 0.001) were found. Indices of fermentation measured in ileal digesta of PVTC- and IRA-pigs were considerably different. In IRA-animals the concentration of volatile fatty acids (VFA) was about 112-162 mmol/l, higher (P < 0.001) than in digesta of PVTC-pigs (20-31 mmol/l). The molar proportions of acetate and propionate depended (P < 0.01 and P < 0.001 respectively) on the digesta-collection technique. Concentrations and ratios of VFA measured in PVTC-pigs were similar to reported values. Diaminopimelic acid (DAPA) concentration and N:DAPA ratios measured in digesta were significantly (P < 0.05 and P < 0.001 respectively) different between treatments. All digesta variables measured showed increased microbial activity in digesta of IRA-pigs; thus, an influence on digestibility measurement can be assumed.
Köhler
T
T
Department of Animal Nutrition, Agricultural University, Wageningen, The Netherlands.
Mosenthin
R
R
Verstegen
M W
MW
Huisman
J
J
den Hartog
L A
LA
Ahrens
F
F
D000222:Adaptation, Physiological; D000714:Anastomosis, Surgical; D000818:Animals; D002404:Catheterization / Q000379:methods / Q000662:veterinary*; D002432:Cecum; D004063:Digestion / Q000502:physiology; D007082:Ileum / Q000601:surgery*; D008297:Male; D009584:Nitrogen / Q000378:metabolism; D012007:Rectum / Q000601:surgery*; D013048:Specimen Handling / Q000295:instrumentation / Q000379:methods* / Q000662:veterinary; D013552:Swine / Q000254:growth & development* / Q000378:metabolism; D013997:Time Factors
D009584:Nitrogen