Ground, dry-rolled and steam-processed barley grain for midlactation Holstein cows

Sadri, H.; Ghorbani, G.R.; Alikhani, M.; Babaei, Mehdi; Nikkhah, Akbar

doi:10.1016/j.anifeedsci.2007.06.025

Cited by 18 publications

(23 citation statements)

References 23 publications

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“…Weber et al (2006) and Silveira et al (2007b) reported that replacing maize grains with wheat or barley grains in TMR decreased DMI by 2 kg/d in late and early lactating dairy cows, respectively. However, no effects on DMI were observed when cows were fed barley grains differing in ruminal degradability (Silveira et al, 2007a;McGregor et al, 2007;Sadri et al, 2007). In contrast, replacing dry maize grain with high moisture maize, a product with higher ruminal degradability, in a diet relatively low in peNDF, Bradford and Allen (2007) reported a reduced DMI of 2 kg/d, indicating that grain source and conservation technique are also important factors for DMI in dairy cows.…”

Section: Effects Of Dietary Fibre Content and Degradable Starch On Drmentioning

confidence: 97%

“…However, those concerns have been diminished by steamrolling or coarse dry rolling of those grains, which lowers their ruminal degradability (Table 1). Interestingly, Sadri et al (2007) suggested that the effects of processing method (i.e., steam-rolling or coarse dry rolling) of barley grain on rumen conditions and performance of dairy cows should be considered in relation with the absolute content of starch in the diet. Indeed, Silveira et al (2007a) reported that concentration of dietary starch affects ruminal fermentation and milk production to an extent, at least, as great as the differences in ERD of starch.…”

Section: Feedstuffsmentioning

confidence: 99%

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Balancing diets for physically effective fibre and ruminally degradable starch: A key to lower the risk of sub-acute rumen acidosis and improve productivity of dairy cattle

et al. 2010

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Section: Effects Of Dietary Fibre Content and Degradable Starch On Drmentioning

confidence: 97%

Section: Feedstuffsmentioning

confidence: 99%

Balancing diets for physically effective fibre and ruminally degradable starch: A key to lower the risk of sub-acute rumen acidosis and improve productivity of dairy cattle

et al. 2010

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“…2 This finding is likely caused by the structural differences between the grains as previously discussed, which leads to a faster fermentation of wheat compared with corn and to faster formation of lactate, which decreases ruminal fluid pH. [40][41][42] The negative relationship between proportion of wheat and MP could also be attributed to the ruminal fluid pH. The treatment that contained wheat grain at a proportion of 500 mg g −1 DM produced 26% less MP than the control treatment, and the treatment that contained wheat grain at 1000 mg g −1 DM produced 40% less MP than the control treatment.…”

Section: Methodsmentioning

confidence: 96%

The effect of diet of the donor cows on in vitro measurements of methane production from wheat and corn incubated in various forage‐to‐grain ratios

et al. 2019

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BACKGROUND Supplementation of ruminant diets with wheat and corn grains influences ruminal fermentation. In vitro fermentation is a methodology that can be used to screen feeds for their potential to produce enteric methane. However, there is evidence that the diet of the donor cows could impact the results of in vitro analysis. This research investigated the in vitro fermentation of wheat and corn grain when incubated in ruminal fluid from cows fed different grain types and different forage‐to‐grain ratios. RESULTS The type of grain fed to the donor cows, as well as forage‐to‐grain ratio, affected the outcome of fermentation of wheat and corn grain. Differences in methane production (MP) between grains were only observed when incubated with ruminal fluid adapted to each specific grain type. Increasing proportions of wheat but not of corn decreased in vitro MP in a linear manner compared with MP produced from forage only. CONCLUSIONS Wheat grain has a greater in vitro antimethanogenic effect than corn. However, to detect the different fermentations between wheat and corn, grains should be incubated in ruminal fluid from cows adapted to that specific grain type. © 2019 Society of Chemical Industry

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“…To date, domestic and foreign scientists, including V. G. Korotkov, A. V. Aleshkin, A. A. Sundeev, P. A. Savinykh, X. Zhao, H. Zhou, and S. Rong have formulated various analytical provisions in the field of development of ways to reduce the energy consumption and expand the functionality of hammer-type shredders of the closed type [1][2][3][4][5]. The aspect of the working process improvement is prevalent in the works of many authors on the theory of grinding.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study results of product flow management process in hammer-type shredder working chamber

Ushakov

Shakhov

Асманкин

et al. 2019

Engineering for Rural Development

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The problem under study is the uneven grinding and high specific energy consumption of grain crop hammer-type shredders with centrifugal segregation units of the air-product flow inside the working chamber. Elimination of negative consequences of segregation during grinding of the grain mass is achieved by improving the efficiency of the air-product flow management inside the hammer-type shredder working chamber; by separating of standard particles from the main flow and their lateralization (withdrawing to lateral areas) to remove from the working chamber. The analytical dependences of the trajectories of the air-product layer particles during the motion from the reflector to the sieve and their velocities profile have been obtained. The optimal range of tilt angles of the reflecting surface of the separator is in the range from 40 degrees to 50 degrees. From the condition of uniform distribution of particles on the surface of the sieve, the equation of its shape for this range has been obtained. The method of changing the shape of the reflecting surface of the separator for the use of a plane-shaped sieve is proposed. Analytical dependences allow, depending on the shape of the separator, to set the shape of the sieve and vice versa-depending on the shape of the sieve to set the shape of the separator. At the same time, the analysis of the movement of the ingredient particles will make it possible to develop the structural and technological scheme of the crusher, which provides increased productivity by improving the conditions of the grain material separation process and timely unloading the finished product from the grinding chamber.

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Ground, dry-rolled and steam-processed barley grain for midlactation Holstein cows

Cited by 18 publications

References 23 publications

Balancing diets for physically effective fibre and ruminally degradable starch: A key to lower the risk of sub-acute rumen acidosis and improve productivity of dairy cattle

Balancing diets for physically effective fibre and ruminally degradable starch: A key to lower the risk of sub-acute rumen acidosis and improve productivity of dairy cattle

The effect of diet of the donor cows on in vitro measurements of methane production from wheat and corn incubated in various forage‐to‐grain ratios

Theoretical study results of product flow management process in hammer-type shredder working chamber

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