Effects of pressure toasting, expander treatment and pelleting on in vitro and in situ parameters of protein and starch in a mixture of broken peas, lupins and faba beans

Goelema, J.O.; Smits, A.; Vaessen, L.M.; Wemmers, A.

doi:10.1016/s0377-8401(98)00266-1

Cited by 95 publications

(55 citation statements)

References 39 publications

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“…Increased starch digestibility due to gelatinisation of starch has been shown by several authors (Holm et al 1988;Bjo¨rk et al 1990Bjo¨rk et al , 2000Kishida et al 2001). However, since conventional pelleting is of modest importance for starch gelatinisation (Skoch et al 1981(Skoch et al , 1983Goelema et al 1999;Svihus et al 2004;Zimonja et al 2007), this effect may be modest. Also, recent results by Zimonja and Svihus (2008) showed no improvement in starch digestibility when cold pelleting was replaced by steam pelleting in wheat diets.…”

Section: Discussionsupporting

confidence: 90%

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Effects of fibre content in pelleted wheat and oats diets on technical pellet quality and nutritional value for broiler chickens

Zimonja¹,

Hetland²,

Lazarevic³

et al. 2008

Can. J. Anim. Sci.

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. 2008. Effects of fibre content in pelleted wheat and oat diets on technical pellet quality and nutritional value for broiler chickens. Can. J. Anim. Sci. 88: 613Á622. Two experiments were conducted to study the effects of either soluble or insoluble fibre naturally occurring in wheat and oats, on technical pellet quality and nutritional value for broiler chickens. In exp. 1, the effects of insoluble fibre were studied by mixing diets based on wheat or naked oats with either coarse or fine oats hulls followed by pelleting. Hull inclusion increased (PB0.05) starch gelatinisation, especially in the diets based on oats. Addition of finely ground oats hulls improved pellet durability, in particular after storage, while no such effect was observed for coarse oats hulls. Oats hulls inclusion caused a more elastic pellet with higher breaking resistance (PB0.05). Lower (PB0.05) energy consumption was observed for diets based on oats compared with wheat, while no effect of fibre inclusion on energy consumption was found. In exp. 2, the influence of pelleting on the viscosity effect of soluble fibres in diets based on wheat or oats was studied. A significant increase (P B0.05) in intestinal viscosity of broiler chickens was observed for all batches of grain exposed to steam pelleting. Viscosity was doubled (PB0.05) with wheat diets, while the increase in viscosity was even greater in oat diets. In wheat diets, feed intake and weight gain was reduced (PB0.05), while feed conversion ratio was not affected. Steam pelleting of oats reduced (PB0.05) feed intake and weight gain, and increased feed conversion ratio (PB0.05). The improvements (PB0.05) in metabolisable energy and dry matter digestibility in wheat diets was not consistent with the observed increases in viscosity or with the results obtained with oats.

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Section: Discussionsupporting

confidence: 90%

“…The incomplete extent of starch gelatinisation for pelleted diets agrees with earlier findings (Skoch et al 1981(Skoch et al , 1983Goelema et al 1999;Svihus et al 2004;Zimonja et al 2007). The present data show that the majority of gelatinisation occurs during the pelleting process, and not during conditioning.…”

Section: Discussionmentioning

confidence: 99%

Effects of fibre content in pelleted wheat and oats diets on technical pellet quality and nutritional value for broiler chickens

Zimonja¹,

Hetland²,

Lazarevic³

et al. 2008

Can. J. Anim. Sci.

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“…Norberg et al (2007) support our findings of nearly 100% intestinal starch digestion without pre-incubation in the rumen for oats. Goelema et al (1999) reported that total starch digestibility and intestinal digestibility of rumen-undegraded starch in situ were not affected by toasting, whereas pelleting significantly increased total starch digestibility and, in some cases, also intestinal digestibility of rumen-undegraded starch. Results of Goelema et al (1999) show that the effects on starch digestibility depend on the conditions applied during processing, probably mainly due to effects on particle size.…”

Section: Discussionmentioning

confidence: 99%

Assessment of the mobile bag method for estimation of in vivo starch digestibility

Ghoorchi

Lund

Larsen

et al. 2013

Animal

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The objective was to assess the ability of the in situ mobile nylon bag method for predicting small intestinal and total tract starch digestibility. Starch disappearance was measured for 18 samples of different cereals and legumes subjected to different physical and chemical processing methods and compared with coherent in vivo digestibility. Starch disappearance was measured both with and without initial ruminal pre-incubation during 4 h. Bags were retrieved from either the ileal cannula or faeces. Two dry Danish Holstein cows fitted with rumen cannulas were used for rumen pre-incubations and two lactating Danish Holstein cows fitted with duodenal and ileal cannulas were used for intestinal incubations. Rumen pre-incubation had no significant effect on disappearance from bags recovered in faeces. The disappearance of legume starch was lower, both in the rumen and small intestine, compared with starch from barley, wheat, oats, ear maize and maize. Transit times of the mobile bags from duodenum to ileum were not significantly different between feeds. A weak positive correlation was found between in vivo small intestinal and total tract digestibility of starch and disappearance obtained using the mobile bag technique across a broad range of starch sources. Omitting two less conventional starch sources (NaOH wheat and xylose-treated barley) resulted in a high (0.87) correlation between total tract in vivo digestibility and mobile bag disappearance. The use of the mobile bag method for estimation of in vivo starch digestibility will therefore depend on the starch type.

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“…This is known as gelatinization. The degree of gelatinization of starch is very important in starch digestion (6,7). Gelatinization of starch depends on the strength, rotation speed, pressure, and pore diameter of the extruder, and the moisture level, starch content, and character of grain.…”

Section: Introductionmentioning

confidence: 99%

Barley as an alternative to rice in dog food

İnal¹,

Alataş²,

Kahraman³

et al. 2017

Turk J Vet Anim Sci

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Effects of pressure toasting, expander treatment and pelleting on in vitro and in situ parameters of protein and starch in a mixture of broken peas, lupins and faba beans

Cited by 95 publications

References 39 publications

Effects of fibre content in pelleted wheat and oats diets on technical pellet quality and nutritional value for broiler chickens

Effects of fibre content in pelleted wheat and oats diets on technical pellet quality and nutritional value for broiler chickens

Assessment of the mobile bag method for estimation of in vivo starch digestibility

Barley as an alternative to rice in dog food

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