Digestibility studies with cows given whole and rolled cereal grains

Nordin, Massita; Campling, R. C.

doi:10.1017/s0003356100031421

Cited by 55 publications

(20 citation statements)

References 14 publications

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“…Downloaded from www.nrcresearchpress.com by 34.214.212.150 on 05/10/18 For personal use only. The observed ranking of ISDMD in sectioned grains, i.e., wheat ) barley > sorghum > maize, is in agreement with the results of Nordin and Campling (1976 (Ely et al1967) have shown that zein protein resists microbial digestion, while Peterson et al (1975) (Orskov 1986 …”

Section: Rbsultssupporting

confidence: 85%

Effect of Ruminal Microbial Colonization on Cereal Grain Digestion

McAllister¹,

Rode²,

Major³

et al. 1990

Can. J. Anim. Sci.

114

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Section: Rbsultssupporting

confidence: 85%

Effect of Ruminal Microbial Colonization on Cereal Grain Digestion

McAllister¹,

Rode²,

Major³

et al. 1990

Can. J. Anim. Sci.

114

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“…For cows yielding 18 to 24 kg FCM daily, Mertens (1984) calculated that the optimum NDF level in the diet was 350 g/kg; corresponding values in experiment 1 were 363, 293 and 255 g/kg for oats, barley and wheat respectively. Whole grain excretion of cows given diets A and W averaged proportionately 0-16 and this is less than half the 0-41 excretion reported by Nordin and Campling (1976). In experiment 2, the lower level of NDF in diet A (371) compared with diets W (423) or R (416 g/kg) may have contributed to the 0-10 proportionately greater FCM and 0-13 higher milk fat produced in cows given the alkali-treated oats.…”

Section: Discussionmentioning

confidence: 66%

Cereal grains in complete diets for dairy cows: a comparison of rolled barley, wheat and oats and of three methods of processing oats

Moran¹

1986

Anim. Sci.

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Two experiments are described in which dairy cows in early lactation were individually offered ad libitum complete diets containing firstly rolled barley, wheat or oats comprising proportionately 0-6 of the total dry matter (DM) and seeondly, whole oats, rolled oats or whole oats soaked in sodium hydroxide comprising proportionately 0-5 of the total DM. Organic-matter (OM) digestibility was measured using chromium III oxide as an external faecal marker and production of milk, milk fat and milk protein were monitored. Rumen digestion rates of each grain type were measured in sacco using non-lactating cows.In the first experiment, voluntary DM intakes did not differ between diets, OM digestibilities were, in decreasing order, wheat > barley > oats, and faecal starch concentrations were, in decreasing order, barley > wheat > oats. Cows given oats produced the most milk and milk fat while cows given wheat produced the most milk protein. Digested OM was used most efficiently by cows given oats and their greater productivity was attributed partly to higher levels of dietary fibre and lipid.In the second experiment, cows fed alkali-treated oats had higher (though non-significant) DM intakes and produced the most milk, milk fat and milk protein. Excretion rates of whole grain from cows given treated or untreated whole oats did not differ, but grain weight loss in transit through the gut was higher with the alkali-treated grain. Food intakes and yields of milk and milk solids were similar in cows given either whole untreated or coarsely rolled oats. TOMMERVIK, R. S. and WALDERN, D. E. 1969.

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“…It would be expected that grains which are more rapidly degraded in the rumen should be associated with a greater incidence of bloat. In this regard, Nordin and Campling (1976) reported that proportional 48-h DM losses from nylon bags incubated in the rumen were only 0-09 for whole barley, 017 to 0-31 for naked barley, and 0-85 for broken barley. 0rskov, Soliman and MacDearmid (1978) observed that proportionately less than 0-05 of whole grains were degraded in nylon bags incubated in the rumen for 36 h in comparison with 0-85 of rolled barley.…”

Section: Utilization Of Whole Grain By Cattlementioning

confidence: 99%

Effect of feeding whole and rolled barley to steers in the morning or afternoon in diets containing differing proportions of hay and grain

1991

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A 2 X 2 X 2 factorial experiment was conducted with 128 growing-finishing steer calves to examine the effects of feeding whole v. rolled barley in diets containing either a constant proportion of concentrate (0-67) or proportionately 0-33 concentrate for 56 days followed by 0-90 concentrate for 83 days, with the concentrate being given at either 08.00 or 15.30 h. Steers given hay at 08.00 h and concentrate at 15.50 h grew proportionately 0-05 faster (P < 0-05) and had better dry matter (DM): gain ratios (P < 0-05) during the first 56 days than those given concentrate at 08.00 h and hay at 09.00 h. By the end of the trial steers fed at 15.50 h had similar daily gains to steers fed at 08.00 h but required proportionately 0-02 less DM : gain (P <0-05). No significant difference in gain was detected between steers given whole (1-30 kg/day) or rolled (1-38 kg/day) barley, but those given whole barley ate proportionately 0-08 more DM daily and had a proportionately 0-15 poorer DM : gain ratio (P < 0-05). The digestibility of diets containing whole grain was reduced (P < 0-05). Thirty-six steers given whole barley bloated compared with nine given rolled barley (P < 0-05). No significant differences were found either in DM intake or in final proportion of concentrate in the diet between steers given the diet containing proportionately 0-67 concentrate throughout the feeding period and those given the variable concentrate diets. There was a trend for DM: gain ratios to be poorer for steers given the constant proportion of concentrate (6-89 v. 6-65).

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Digestibility studies with cows given whole and rolled cereal grains

Cited by 55 publications

References 14 publications

Effect of Ruminal Microbial Colonization on Cereal Grain Digestion

Effect of Ruminal Microbial Colonization on Cereal Grain Digestion

Cereal grains in complete diets for dairy cows: a comparison of rolled barley, wheat and oats and of three methods of processing oats

Effect of feeding whole and rolled barley to steers in the morning or afternoon in diets containing differing proportions of hay and grain

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