Effect of Including Extruded, Rolled or Ground Corn in Dairy Cow Diets Based on Direct Cut Grass Silage

Alvarado-Gilis, C. A.; G, René Anrique; Q, Soledad Navarrete

doi:10.4067/s0718-58392009000300008

Cited by 7 publications

(3 citation statements)

References 23 publications

(32 reference statements)

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“…This reduction can be due to a partial depolymerization of the polysaccharides of the cell wall, which makes them more soluble in the acid and alkali solutions used during measurements (Solanas et al, 2005). This has also been observed in lupin, in mixtures of peas with extruded rapeseed and extruded corn (Cros et al, 1991;Chapoutot and Sauvant, 1997;Alvarado et al, 2009). Table 2 shows the degradation parameters of DM and CP in SBM, DL, EDL, RM, and ERM.…”

Section: Resultsmentioning

confidence: 80%

Ruminal Degradability of Dry Matter and Crude Protein from Moist Dehulled Lupin and Extruded Rapeseed Meal

Barchiesi-Ferrari

Anrique

2011

Chilean J. Agric. Res.

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The flow of ruminal undegradable protein (RUP) to the small intestine can be increased if ruminal degradation of dietary protein is reduced. The objective of this study was to evaluate the effect of extrusion on ruminal degradability of dry matter (DM) and crude protein (CP) from dehulled lupin (Lupinus albus L.) (DL) and rapeseed (Brassica napus L.) meal (RM). Unextruded soybean (Glicine max L.) meal (SBM) was used as a control. The DL was extruded at 130 ºC with 20% moisture and RM was extruded at 120 ºC with 20% moisture. Ruminal degradability was evaluated in situ by incubating feed samples for 2, 4, 8, 12, 24, and 48 h of fermentation in the rumen using three rumen-fistulated dairy cows. Values of CP soluble fraction ("a") in SBM, DL, extruded dehulled lupin (EDL), RM, and extruded rapeseed meal (ERM) was lower in the extruded feeds (P < 0.05). The slowly degradable fraction ("b") of SBM, DL, EDL, RM, and ERM was 858, 593, 622, 451, and 457 g kg-1 , respectively, and was increased by extrusion (P < 0.05). Extrusion reduced the effective degradability (ED) of CP in lupin from 807 to 788 g kg-1 ; kp = 0.05 h-1 while ED was reduced from 868 to 789 g kg-1 ; kp = 0.05 h-1 in ERM. This resulted in an increase in RUP of 8.95% in EDL (P < 0.05); the increase was 37.35% (P < 0.05) in ERM. It may be concluded that extrusion in the presence of moisture reduced the degradability of CP, particularly in the case of ERM.

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Section: Resultsmentioning

confidence: 80%

Ruminal Degradability of Dry Matter and Crude Protein from Moist Dehulled Lupin and Extruded Rapeseed Meal

Barchiesi-Ferrari

Anrique

2011

Chilean J. Agric. Res.

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“…Heat processing, however, has been associated with increased eiciency of fermentative utilization by altering the protein matrix of the endosperm and the starch structure, thus allowing a beter utilization by microbial enzymatic digestion [21]. Increasing the starch availability is the primary goal of grain processing.…”

Section: Impact Of Grain Processingmentioning

confidence: 99%

“…Unlike sheep, adult catles have a limited capacity to masticate cereal grains; hence, it is essential to break the pericarp of the seed either through chemical or physical treatments [21]. In feed grains, germ and endosperm are surrounded by the pericarp, which is largely resistant to microbial atachment [22].…”

Section: Role Of Grain Processing In Starch Digestionmentioning

confidence: 99%

Effects of Grain Processing with Focus on Grinding and Steam- Flaking on Dairy Cow Performance

Safaei¹,

Yang²

2017

Herbivores

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Milk production and milk components are of prime economic importance for dairy farmers. Although milk production depends largely on numerous dietary nutrients, energy and protein are most critical. Feed grains containing starch such as corn, barley, wheat, and sorghum as a primary source of energy are commonly fed to beef and dairy catle to improve meat or milk productions. Feed grain needs to be processed prior to feed catle to increase accessibility of the endosperm by microbial population in the rumen and the host enzyme in the intestine. Grain processing is done by the application of various combinations of heat, moisture, time and mechanical actions. This article outlines the efect of grain processing method and degree of processing on rate and extent of grain digestion in the digestive tract of catle, and consequently on lactation performance and catle health. Methods of grinding, rolling and steam laking are particularly discussed on their advantages and disadvantages. The optimal degree of processing can achieve a balance between maximizing the extent and controlling the rate of starch digestion in the rumen to maximize utilization and avoid digestive and metabolic disturbances. A recent developed precision processing technique has been highlighted and discussed as well.

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Effects of supplementation rate of an extruded dried distillers’ grains cube fed to growing heifers on voluntary intake and digestibility of bermudagrass hay

Adams

Robe

Grigsby

et al. 2022

Journal of Animal Science

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Our objectives were to 1) investigate the difference in chemical composition and disappearance kinetics between loose dried distillers’ grains (DDG) and extruded DDG cubes and 2) evaluate the effects of supplementation rate of extruded DDG cubes on voluntary dry matter intake (DMI), rate and extent of digestibility, and blood parameters of growing beef heifers offered ad libitum bermudagrass (Cynodon dactylon) hay. To characterize the changes in chemical composition during the extrusion process, loose and extruded DDG were evaluated via near-infrared reflectance spectroscopy, and dry matter (DM) disappearance kinetics were evaluated via time point in situ incubations. Extruded DDG cubes had greater (P ≤ 0.01) contents of fat, neutral detergent insoluble crude protein, and total digestible nutrients, but lower (P ≤ 0.01) neutral and acid detergent fiber than loose DDG. Additionally, the DM of extruded DDG cubes was more immediately soluble (P < 0.01), had greater (P < 0.01) effective degradability and lag time, and tended (P = 0.07) to have a greater disappearance rate than loose DDG. In the 29-d supplementation rate study, 23 Charolais-cross heifers were randomly assigned to one of four supplemental treatments: 1) Control, no supplement; 2) Low, 0.90 kg DDG cubes/d; 3) Intermediate, 1.81 kg DDG cubes/d; or 4) High, 3.62 kg DDG cubes/d. Titanium dioxide was used as an external marker to estimate fecal output and particulate passage rate (Kp). Blood was collected from each animal to determine supplementation effects on blood metabolites. Indigestible neutral detergent fiber was used as an internal marker to assess the rate and extent of hay and diet DM digestibility (DMD). Increasing supplementation rate increased Kp and total diet DMI linearly (P < 0.01), yet linearly decreased (P < 0.01) hay DMI. Hay DMD decreased quadratically (P < 0.01), while total diet DMD increased linearly (P < 0.01) with increased DDG cube inclusion. Supplemented heifers had greater (P = 0.07) blood urea nitrogen concentrations than control animals 4 h post-supplementation. Intermediate and high rates of supplementation resulted in lower (P < 0.01) serum non-esterified fatty acid concentrations post-supplementation than control heifers. Concentrations of serum glucose and lactate were greatest (P ≤ 0.06) 8 h post-supplementation. Our results suggest that extruded DDG cubes may be an adequate supplement for cattle consuming moderate-quality forage, and further research is warranted.

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Effect of Including Extruded, Rolled or Ground Corn in Dairy Cow Diets Based on Direct Cut Grass Silage

Cited by 7 publications

References 23 publications

Ruminal Degradability of Dry Matter and Crude Protein from Moist Dehulled Lupin and Extruded Rapeseed Meal

Ruminal Degradability of Dry Matter and Crude Protein from Moist Dehulled Lupin and Extruded Rapeseed Meal

Effects of Grain Processing with Focus on Grinding and Steam- Flaking on Dairy Cow Performance

Effects of supplementation rate of an extruded dried distillers’ grains cube fed to growing heifers on voluntary intake and digestibility of bermudagrass hay

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