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Poster De Conférence Année : 2021

Ileal amino acids digestibility in organic protein feedstuffs for pigs

Résumé

The objective of this study was to determine the standardized ileal digestibility (SID) of crude protein (CP) and amino acids (AA) in a whole seed soya bean, a soybean meal (SBM), two forage peas grain (FP), two rapeseed meals (RM) and two sunflower meals (SM). A total of 8 male growing pigs (35 kg BW) individually fitted with ileorectal anastomosis were used into two parallel 5×5 Latin square designs with 5 diets and 5 periods each. A total of nine casein-corn starch based diets were prepared with 25% of the each protein sources (diets 2 to 9) or with casein as sole source of CP and AA (diet 1). On a 6th period, a N-free diet was used to measure the non-specific basal CP and AA endogenous losses. Within each collection period, ileal digesta were collected during three consecutive days after a 4-d adaptation period to the experimental diets. When compared to the whole seed soya bean, the SID of CP and AA was significantly higher in SBM (49.1 vs 82.8% for lysine). Within the FP sources, the SID of lysine varied from 71.5 to 84.4%. This variation was related to a difference in their fibre contents (15.2 vs 13.7% NDF) and in their antitrypsin factors activity (2,908 vs 1,895 TUI/g). In RM and SM sources, the SID of lysine were rather similar despite significant changes in NDF contents suggesting that others factors would affect the bioavailability of lysine for pigs. In SM, lysine has the lower SID compared to the others AA resulting in a very low amount of SID lysine (7.5 g/kg). This low availability of lysine could be related to high temperature during the oil extraction. The comparison of the AA SID values in organic rich protein sources to those available in the INRAE tables for non-organic feedstuffs showed some nutritional specificities especially for organic sources of SBM and FP that require to be addressed in furthers studies.
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Dates et versions

hal-03412753 , version 1 (03-11-2021)

Identifiants

  • HAL Id : hal-03412753 , version 1

Citer

David Renaudeau, D. Gaudré, Hervé Juin, A. Roinsard. Ileal amino acids digestibility in organic protein feedstuffs for pigs. 72. Annual meeting of the european federation of animal science (EAAP), Aug 2021, Davos, Switzerland. Wageningen Academic Publishers, Book of abstracts, 27, pp.328, Book of abstracts of the 72nd annual meeting of the european federation of animal science. ⟨hal-03412753⟩
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