Determination of Starch, Including Maltooligosaccharides, in Animal Feeds: Comparison of Methods and a Method Recommended for AOAC Collaborative Study

Hall, Mary Beth

doi:10.1093/jaoac/92.1.42

Cited by 470 publications

(324 citation statements)

References 0 publications

Supporting

Mentioning

307

Contrasting

Unclassified

Order By: Relevance

“…930.15;AOAC 2000), N (method no. 990.03; Leco FP-528 Nitrogen Combustion Analyzer; Leco Corp., St. Joseph, MI), NDF (Van Soest et al 1991), starch (Hall 2009(Hall ), ether extract using diethyl ether (method no. 2003AOAC 2006) and ash (method no.…”

Section: Experimental Treatments Feed Samples and Feed Chemical Analmentioning

confidence: 99%

Effect of partially replacing a barley-based concentrate with flaxseed-based products on the rumen bacterial population of lactating Holstein dairy cows

et al. 2017

View full text Add to dashboard Cite

Aims: The effects of partial replacement of a barley-based concentrate with flaxseed-based products on the rumen bacterial population of lactating Holstein dairy cows were evaluated. Methods and Results: Treatments fed were CONT, a normal diet that included barley silage, alfalfa hay and a barley-based concentrate that contained no flaxseed or faba beans; FLAX, inclusion of a nonextruded flaxseed-based product containing 55Á0% flaxseed, 37Á8% field peas and 6Á9% alfalfa; EXT, similar to FLAX, but the product was extruded and EXTT, similar to FLAX, but product was extruded and field peas were replaced by high-tannin faba beans. The rumen bacterial population was evaluated by utilizing 16S rRNA gene sequencing. Most abundant phyla, families and genera were unaffected. However, some taxa were affected; for example, unsaturated fatty acid content was negatively correlated with Clostridiaceae, and tannin content was negatively correlated with BS11 and Paraprevotellaceae. Conclusions: Predominant rumen bacterial taxa were not affected, but the abundance of some taxa found in lower proportions shifted, possibly due to sensitivity to unsaturated fatty acids or tannins. Significance and Impact of the Study: Flaxseed-based products were effective for partially replacing barley-based concentrate in rations of lactating dairy cows. No negative effects of these products were observed on the abundance of predominant rumen bacterial taxa, with only minor shifts in less abundant bacteria.

show abstract

Section: Experimental Treatments Feed Samples and Feed Chemical Analmentioning

confidence: 99%

Effect of partially replacing a barley-based concentrate with flaxseed-based products on the rumen bacterial population of lactating Holstein dairy cows

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Hall [13] reported that higher values for starch were obtained in various animal feed samples using AOAC Method 2014.10 than were obtained with other analytical methods, including AOAC Method 996.11. The author suggested that this may be due to partial isomerization of the reducing-end glucose in maltooligosaccharides to fructose during the hydrolysis of starch by αamylase at 100 C under neutral or slightly alkaline conditions.…”

Section: Stability Of Maltose At Higher Ph Valuesmentioning

confidence: 92%

Measurement of Starch: Critical Evaluation of Current Methodology

McCleary¹,

Charmier²,

McKie³

2018

Starch Stärke

View full text Add to dashboard Cite

Most commonly used methods for the measurement of starch in food, feeds, and ingredients employ the combined action of α-amylase and amyloglucosidase to hydrolyze the starch to glucose, followed by glucose determination with a glucose oxidase/peroxidase reagent. Recently, a number of questions have been raised concerning possible complications in starch analytical methods. In this paper, each of these concerns, including starch hydrolysis, isomerization of maltose to maltulose, effective hydrolysis of maltodextrins by amyloglucosidase, enzyme purity and hydrolysis of sucrose, and β-glucans have been studied in detailed. Results obtained for a range of starch containing samples using AOAC Methods 996.11 and 2014.10 are compared and a new simpler format for starch measurement is introduced. With this method that employs a thermostable α-amylase (as distinct from a heat stable α-amylase) which is both stable and active at 100 C and pH 5.0, 10 samples can be analyzed within 2 h, as compared to the 6 h required with AOAC Method 2014.10.

show abstract

“…The NDF content was analyzed according to the modified method by Van Soest, Robertson, and Lewis (1991), using amylase (ISO, 16472, 2006). Starch was analyzed according to Hall (2009) procedure.…”

Section: Digestibility Trialmentioning

confidence: 99%

Effects of maternal protein supplementation and inclusion of rumen‐protected fat in the finishing diet on nutrient digestibility and expression of intestinal genes in Nellore steers

Cruz

Schoonmaker

Resende

et al. 2019

Animal Science Journal

View full text Add to dashboard Cite

The study aimed to evaluate nutrient digestibility and intestine gene expression in the progeny from cows supplemented during gestation and fed diets with or without rumen‐protected fat (RPF) in the feedlot. Forty‐eight Nellore steers, averaging 340 kg, were housed in individual pens and allotted in a completely randomized design using a 2 × 2 factorial arrangement (dams nutrition × RPF). Cows' supplementation started after 124 ± 21 days of gestation. The feedlot lasted 135 days and diets had the inclusion of zero or 6% of RPF. Digestibility was evaluated by total feces collection. Steers were slaughtered using the concussion technique and samples of pancreas and small intestine were collected immediately after the slaughter to analyze α‐amylase activity, and the expression of SLC5A1, CD36, and CCK and villi morphometry. Feeding RPF increased nutrients digestibility (p < 0.01). There was no effect of maternal nutrition on digestibility and α‐amylase activity in steers (p > 0.05). Duodenal expression of SLC5A1, CD36, and CCK increased in the progeny from restricted cows. In conclusion, protein restriction during mid to late gestation of dams has long‐term effects on small‐intestine length and on expression of membrane transporters genes in the duodenum of the progeny. However, maternal nutrition does not affect digestibility in the feedlot.

show abstract

Determination of Starch, Including Maltooligosaccharides, in Animal Feeds: Comparison of Methods and a Method Recommended for AOAC Collaborative Study

Cited by 470 publications

References 0 publications

Effect of partially replacing a barley-based concentrate with flaxseed-based products on the rumen bacterial population of lactating Holstein dairy cows

Effect of partially replacing a barley-based concentrate with flaxseed-based products on the rumen bacterial population of lactating Holstein dairy cows

Measurement of Starch: Critical Evaluation of Current Methodology

Effects of maternal protein supplementation and inclusion of rumen‐protected fat in the finishing diet on nutrient digestibility and expression of intestinal genes in Nellore steers

Contact Info

Product

Resources

About