Understanding the buffering capacity in feedstuffs

Levic, J.; Prodanović, Olivera; Sredanović, S.

doi:10.2298/bah0506309l

Cited by 23 publications

(18 citation statements)

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“…No correlation was detected for LBR and CA, which contrasts with observations of Jasaitis et al One possible explanation is the low amount of CA in the present study (< 1.7% versus 1.17 up to 100%), resulting in poorer buffering capacity. Next to CA, CP generates high buffering capacity, as shown in several other studies . Although the fibre rich feeds had low CP content, CP was the main reason for changes in LBR values ( r = 0.53).…”

Section: Discussionmentioning

confidence: 54%

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Physicochemical properties to support fibre characterization in monogastric animal nutrition

et al. 2019

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BACKGROUND The aim of the study was to rank conventionally used fibre rich feeds for their physicochemical properties and detect possible correlation between analytical fibre determinations. A total of 22 samples were analysed for proximate fibre values, soluble dietary fibre (SDF), insoluble dietary fibre (IDF), crude protein (CP) and crude ash (CA). Physicochemical properties were determined in vitro by hydration capacity (HC) [water holding capacity (WHC), water binding capacity (WBC), swelling property (SwP)] and buffering capacity [linear buffering rate (LBR)]. RESULTS Fibre content and physicochemical properties varied markedly between the samples. HC was highest for beet pulp and lowest for rice and millet bran. Buffering capacity expressed minimum values for lignocelluloses and maximum values for rape seed hulls. The correlation of methods was positively between WBC, WHC and SwP (r ≤ 0.89; P ≤ 0.003) but not significant for HC and buffering capacity. SwP negatively correlated with crude fibre (CF), neutral detergent fibre (aNDFOM) and IDF (r ≤ −0.48; P ≤ 0.05). WBC and SwP positively correlated with SDF (r ≤ 0.63; P ≤ 0.04). LBR was negatively correlated with CF, aNDFOM, IDF and total dietary fibre (r ≤ −0.55; P ≤ 0.02), but positively with CP (r = 0.53; P = 0.01). CONCLUSION The determination of physicochemical properties is applicable to rank fibre rich feeds, some correlations between fibre analytical measurements and physicochemical properties were detected. © 2019 The Authors. Journal of the Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry

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Section: Discussionmentioning

confidence: 54%

“…Next to CA, CP generates high buffering capacity, as shown in several other studies. 23,36,37 Although the fibre rich feeds had low CP content, CP was the main reason for changes in LBR values (r = 0.53). The correction for CP content (e.g.…”

Section: Discussionmentioning

confidence: 99%

Physicochemical properties to support fibre characterization in monogastric animal nutrition

et al. 2019

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“…The absence of differences between treatments may be due to the presence of relatively high levels of dicalcium phosphate and limestone in the diet of piglets. Sources such as dicalcium phosphate and limestone possess a high buffering capacity (Levic, 2005) which often confers a high basic pH to the piglet's intestinal content, a fact that may have masked the effect of organic acids in the diets tested. In fact, high buffering capacities were obtained with dicalcium phosphate and a vitamin/mineral mixture in complex diets used for piglets (Bockor et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

Organic acids in diets of weaned piglets: performance, digestibility and economical viability

Boas

Budiño

Neto

et al. 2016

Arq. Bras. Med. Vet. Zootec.

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Organic acids are used as feed additives to promote growth of weaned piglets since they prevent the occurrence of diarrhea. Thus, performance and digestibility assays were conducted and economic viability of diets was evaluated. In the performance assays, 64 hybrid piglets weaned with a mean weight of 5.87±0.31kg were divided in a randomized block design consisting of 4 treatments, 8 repetitions and 2 piglets per experimental unit (1 castrated male and 1 female). In the digestibility assay, 24 castrated male hybrid piglets with a mean weight of 8.21±0.79kg were individually assigned to 4 treatments and 6 repetitions. The treatments in the two assays were as follows: control, basal diet without addition of an acidifier; blend: inclusion of 0.5% of a mixture of organic acids; butyrate: inclusion of 0.1% of sodium butyrate; blend+butyrate: inclusion of 0.5% of a mixture of organic acids and 0.1% sodium butyrate. There was no effect (P>0.05) of the acidifiers on animal performance during the period studied. Organic acids exerted no effect (P>0.05) on the apparent digestibility coefficients of nutrients. Diets supplemented with sodium butyrate had an economic advantage for the period of 10-24 days. No episode of diarrhea was observed. This study demonstrated no effect of acidifier feed additives as growth promoters in complex diets for weaned piglets.Keywords: acidifiers, additives, digestibility, performance, pigs RESUMO Ácidos orgânicos são utilizados como aditivos promotores de desempenho em leitões, pois podem prevenir a ocorrência de diarreias. Para tanto, foram conduzidos ensaios de desempenho, digestibilidade, e foi avaliada a viabilidade econômica das dietas. No desempenho, foram utilizados 64 leitões híbridos desmamados, com peso médio de 5,87±0,31kg, distribuídos em um delineamento em blocos ao acaso, com quatro tratamentos, oito repetições e dois leitões por unidade experimental (sendo um macho castrado e uma fêmea

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“…Bucking and Wood ( 2008 ) and Cooper and Wilson ( 2008 ) found similar increases in pH, HCO 3 and BE in DA-cannulated rainbow trout fed diets based on fish meal and suggested that high buffering capacity of fish meal influenced alkaline tide. Fish meal has been shown to have one of the highest buffering capacities among feedstuffs, and this characteristic has been correlated to high cation and ash content (Jasaitis et al 1987 ; Lević et al 2005 ; Montañez-Valdez et al 2013 ). The present study confirmed that fish meal had more than twofold higher levels of ash and buffering capacity compared with both yeast ingredients (Fig.…”

Section: Discussionmentioning

confidence: 99%

Effects of dietary yeast inclusion and acute stress on post-prandial whole blood profiles of dorsal aorta-cannulated rainbow trout

Huyben

Vidaković

Nyman

et al. 2016

Fish Physiol Biochem

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Yeast is a potential alternative to fish meal in diets for farmed fish, yet replacing more than 50 % of fish meal results in reduced fish growth. In a 4-week experiment, 15 rainbow trout (Oncorhynchus mykiss) were cannulated and fed three diets each week: 30 % fish meal as a control (FM); 60 % replacement of fish meal protein, on a digestible basis, with Saccharomyces cerevisiae (SC); and 60 % replacement with Wickerhamomyces anomalus and S. cerevisiae mix (WA). Blood was collected at 0, 3, 6, 12 and 24 h after feeding. In the final week, fish were exposed to a 1-min netting stressor to evaluate possible diet–stress interactions. Significant increases in pH, TCO2, HCO3 and base excess were found after fish were fed the SC and WA diets compared with FM, which elevated blood alkaline tides. Yeast ingredients had lower buffering capacity and ash content than fish meal, which explained the increase in alkaline tides. In addition, fish fed the WA diet had significantly reduced erythrocyte area and fish fed SC and WA diets had increased mean corpuscular haemoglobin levels, indicating haemolytic anaemia. Higher levels of nucleic acid in yeast-based diets and potentially higher production of reactive oxygen species were suspected of damaging haemoglobin, which require replacement by smaller immature erythrocytes. Acute stress caused the expected rise in cortisol and glucose levels, but no interaction with diet was found. These results show that replacing 60 % of fish meal protein with yeasts can induce haemolytic anaemia in rainbow trout, which may limit yeast inclusion in diets for farmed fish.

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Understanding the buffering capacity in feedstuffs

Abstract: nema

Cited by 23 publications

References 0 publications

Physicochemical properties to support fibre characterization in monogastric animal nutrition

Physicochemical properties to support fibre characterization in monogastric animal nutrition

Organic acids in diets of weaned piglets: performance, digestibility and economical viability

Effects of dietary yeast inclusion and acute stress on post-prandial whole blood profiles of dorsal aorta-cannulated rainbow trout

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