Effects of correcting <i>in situ</i> ruminal microbial colonization of feed particles on the relationship between ruminally undegraded and intestinally digested crude protein in concentrate feeds

González, Javier; Mouhbi, Rabiaa; Guevara-González, Jesús Alberto; Arroyo, J. M.

doi:10.1002/jsfa.8534

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…These values agree with previous observations reporting lower protein digestibility in TP compared with protein concentrates such as soybean meal [2,40]. The positive correlation of IDCP with ADF fraction is in accordance with the observation that intestinal digestibility of CP increases as rumen degradability of CP decreases [41]; this would explain the fact that ADF was negatively correlated with in situ CP degradability and positively with IDCP. The negative correlation between IDCP and TSP content may indicate that TSP formed less-digestible complexes with dietary proteins.…”

Section: Discussionsupporting

confidence: 92%

Nutritive Value of Tomato Pomace for Ruminants and Its Influence on In Vitro Methane Production

Marcos

Evan

Molina-Alcaide

et al. 2019

Animals

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The objective of this study was to determine the variability in nutritive value for ruminants of tomato pomace (TP) samples and analyze its effect on in vitro fermentation when it was included in a high-concentrate diet. Twelve TP samples were obtained from two processing plants at weekly intervals and analyzed for chemical composition, in vitro rumen fermentation, and intestinal digestibility. The chemical composition of TP did not differ between processing plants and only slight variations were observed among sampling times. Tomato pomace had a low dry matter content (<300 g/kg), a high content of neutral detergent fiber, crude protein, and ether extract (572, 160, and 82.7 g/kg dry matter on average, respectively), and was rapidly fermented in the rumen. Protein degradability at 16 h in situ incubation was 510 g/kg and in vitro intestinal digestibility of protein was low (430–475 g/kg). Replacing soybean meal and barley straw by dried TP increased the in vitro fermentation rate and the production of volatile fatty acids and reduced NH3-N concentrations without affecting CH4. In summary, TP samples showed little variability in nutritive value over sampling time and TP of up to 180 g/kg could be included in high-concentrate diets without negatively affecting rumen fermentation.

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Section: Discussionsupporting

confidence: 92%

Nutritive Value of Tomato Pomace for Ruminants and Its Influence on In Vitro Methane Production

Marcos

Evan

Molina-Alcaide

et al. 2019

Animals

View full text Add to dashboard Cite

show abstract

“…These values agree with previous observations reporting lower protein digestibility in TP compared with protein concentrates such as soybean meal . The positive correlation of IDCP with ADF fraction is in accordance with the observation that intestinal digestibility of CP increases as rumen degradability of CP decreases (González et al, 2018); this would explain the fact that ADF was negatively correlated with in situ CP degradability and positively with IDCP. The negative correlation between IDCP and TSP content may indicate that TSP formed less digestible complexes with dietary proteins.…”

Section: Itemsupporting

confidence: 88%

Nutritive evaluation of olive cake and tomato pomace for small ruminant feeding

Marcos¹

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accumulation, but it is necessary to assess their nutritive value. Tomato pomace (TP) is a by-product of the tomato industry that could be used in ruminant feeding, but data on its nutritive value are limited. The aim of this work was to analyze the chemical composition, in vitro rumen fermentation, and intestinal digestibility of 12 TP samples obtained from two processing plants at different times during the tomato campaign and to assess the in vitro fermentation of diets including increased TP amounts. The chemical composition of TP showed little variability. Samples of TP had high fiber, protein, and fat content and were rapidly fermented in the rumen, but the in vitro intestinal digestibility of the protein was low. The in vitro results provide useful information for including TP in ruminant diets, indicating that amounts of TP up to 180 g/kg could be included in a diet for fattening ruminants without negatively affecting rumen fermentation, but these results should be confirmed in vivo.

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Effects of correcting in situ ruminal microbial colonization of feed particles on the relationship between ruminally undegraded and intestinally digested crude protein in concentrate feeds

Cited by 2 publications

References 13 publications

Nutritive Value of Tomato Pomace for Ruminants and Its Influence on In Vitro Methane Production

Nutritive Value of Tomato Pomace for Ruminants and Its Influence on In Vitro Methane Production

Nutritive evaluation of olive cake and tomato pomace for small ruminant feeding

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