Effects of replacing different proportions of barley grain by barley fibre on performance of dairy bulls

Huuskonen, Arto; Khalili, Hannele; Joki‐Tokola, Erkki

doi:10.2137/145960607783328227

Cited by 12 publications

(8 citation statements)

References 45 publications

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“…Replacing barley with oats in the diet had a negative effect on the OM digestibility similar to that observed by Huhtanen (1992) and Huuskonen et al (2007aHuuskonen et al ( , 2008b in growing bulls when they replaced barley grain by barley fibre (a fibrous by-product of integrated starch-ethanol production). Like oats, also barley fibre contains much more NDF and less starch than barley grain (Huuskonen et al, 2007a(Huuskonen et al, , 2008b. The reduction in NDF digestibility, when replacing barley grain with oats, was partly a consequence of decreasing proportion of silage's NDF in the total NDF intake.…”

Section: Effect Of Cereal Typesupporting

confidence: 61%

“…However, in the present study, the bulls did not compensate the lower energy content of oats by increasing silage intake. In our earlier studies with growing dairy bulls, partial (50%) replacement of barley grain by barley fibre did not affect the LWG of the bulls on TMR feeding, because replacing barley grain with barley fibre increased feed intake (Huuskonen et al, 2007a(Huuskonen et al, , 2008b. In these earlier experiments we used TMR feeding and the average concentrate proportions were higher (540 g/kg DM, Huuskonen et al, 2007a and570 g/kg DM, Huuskonen et al, 2008b) than in the present study (400 g/kg).…”

Section: Effect Of Cereal Typementioning

confidence: 73%

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The effect of cereal type (barley versus oats) and rapeseed meal supplementation on the performance of growing and finishing dairy bulls offered grass silage-based diets

Huuskonen

2009

Livestock Science

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Section: Effect Of Cereal Typesupporting

confidence: 61%

Section: Effect Of Cereal Typementioning

confidence: 73%

The effect of cereal type (barley versus oats) and rapeseed meal supplementation on the performance of growing and finishing dairy bulls offered grass silage-based diets

Huuskonen

2009

Livestock Science

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“…The LWG was calculated as the difference between the means of initial and final weights. The estimated rate of carcass gain was calculated by assuming an initial carcass weight of 0.50 of initial LW which was used also in previous studies by Root and Huhtanen (1998) and Huuskonen et al (2007b). Dressing proportions were calculated from the ratio of hot carcass weight to final LW.…”

Section: Measurementsmentioning

confidence: 99%

Need for protein supplementation in the diet of growing dairy bulls fed total mixed ration based on moderate digestible grass silage and barley

Huuskonen¹,

Khalili²,

Joki‐Tokola³

2008

AFSci

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The objective of the present experiment was to study the need for the protein supplementation in the diet of growing dairy bulls (initial live weight 272 ± 28.5 kg and final live weight 666 ± 31.2 kg, on average) fed total mixed ration based on moderate digestible grass silage and barley. The experiment comprised 24 Finnish Ayrshire bulls and 8 Holstein-Friesian bulls and included four treatments. The control diet (C) consisted of moderate digestible (653 g digestible organic matter in dry matter (DM) grass silage (450 g kg -1 DM), barley grain (275) and barley fibre (275) without protein supplementation. Three isonitrogenous experimental diets included also extra protein, i.e. (1) rapeseed meal (RSM) (supplementation 530 g DM per animal day -1 ), (2) wet distillers' solubles (WDS) (600 g) and (3) a mixture of barley protein (90% of fresh weight) and wet distillers' solubles (10) (BPWDS) (480 g). In all isonitrogenous diets the crude protein content of concentrate increased from 137 to 150 g kg -1 DM (9%) compared with the C diet. All bulls were fed total mixed ration ad libitum. The energy content of all diets was 11.6 MJ kg -1 DM. The live weight gain of the bulls tended to be higher with the BPWDS diet than with the C diet (C 1214 vs. BPWDS 1301 g d -1 ; p = 0.10), but the treatments had no significant effect on carcass gain, feed conversion or slaughter parameters. Only the BPWDS diet differed significantly from the C diet in DM (C 9.69 vs. BPWDS 10.38 kg DM d -1; p < 0.01) and energy intake ; p < 0.05). The apparent organic matter digestibility (OMD) was 5% higher in the BPWDS diet than in the C diet (p < 0.001), but the RSM and WDS diets did not differ from the C diet in OMD. The results indicate that the supply of protein in dairy bulls is most probably adequate with moderate digestible, well-preserved grass silage and barley-based concentrates when intake of digestible organic matter is high enough to support microbial protein synthesis in the rumen.

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“…The live weight gain (LWG) was calculated as the difference between the means of initial and final weights. The estimated rate of carcass gain was calculated by assuming an initial carcass weight of 0.50 of initial LW which was used also in previous studies by Huuskonen et al (2007bHuuskonen et al ( , 2008Huuskonen et al ( , 2009. After slaughter in a commercial meat plant carcasses were weighed hot.…”

Section: Calculations and Carcass Measurementsmentioning

confidence: 99%

Performance of growing dairy bulls offered diets based on silages made of whole-crop barley, whole-crop wheat, hairy vetch and grass

Huuskonen¹,

Joki‐Tokola²

2008

AFSci

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The present experiment was conducted to study diet digestibility, feed intake, animal performance and carcass characteristics of growing dairy bulls offered diets based on whole-crop barley, a mixture of whole-crop barley and hairy vetch (Vicia villosa Roth.) or a mixture of whole-crop wheat and hairy vetch relative to moderate digestible grass silage-based diet. The feeding experiment with 24 Finnish Ayrshire and 8 HolsteinFriesian bulls included 4 forage feeding treatments: grass silage (G), whole-crop barley and hairy vetch mixture silage (BHV), whole-crop wheat and hairy vetch mixture silage (WHV) and whole-crop barley silage (B). In all treatments animals were offered silage ad libitum. The amount of concentrate supplementation was 36 g (W 0.75 ) -1 per animal per day for all treatments. The concentrate ration included rolled barley and rapeseed meal. Differences between the treatments were compared using an a priori test (Dunnett's test) so that comparison of the diets was based on the G diet. The animals were fed the experimental diets from day 240 to finish at day 505 of age. During the experiment the average concentrate proportions of G, BHV, WHV and B diets were 437, 424, 426 and 423 g dry matter (DM) (kg DM) -1 , respectively. There were no significant differences in silage DM intake or in the total DM intake (DMI) (kg DM d -1 ) between treatments. However, DMI kg -1 W 0.75 tended to be 3.5% higher (p = 0.09) in the B diet than in the G diet. Due to increasing energy intake, the gain of the bulls was higher with the G diet than with the WHV diet (p < 0.05). BHV and B diets did not differ from the G diet in gain. Treatments had no significant effect on the dressing proportion or carcass conformation. The carcass fat score of WHV bulls was 29% lower (p < 0.05) than that of the G bulls, but BHV and B diets did not differ from the G diet in carcass fatness. The feed conversion rate (DM intake kg -1 carcass gain) of the bulls was better (p < 0.001) and protein conversion (g AAT kg -1 carcass gain) tended to be better (p = 0.07) with the G diet than with the WHV diet. BHV and B diets did not differ from the G diet in any feed conversion parameters. It can be concluded that replacing moderate digestible grass silage with whole-crop wheat and hairy vetch mixture silage decreased the carcass gain of growing dairy bulls due to lower energy intake and poorer feed conversion. Instead, replacing moderate digestible grass silage with whole-crop barley or with whole-crop barley and hairy vetch mixture silage resulted in no differences in the performance or carcass characteristics parameters of growing dairy bulls.

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Effects of replacing different proportions of barley grain by barley fibre on performance of dairy bulls

Cited by 12 publications

References 45 publications

The effect of cereal type (barley versus oats) and rapeseed meal supplementation on the performance of growing and finishing dairy bulls offered grass silage-based diets

The effect of cereal type (barley versus oats) and rapeseed meal supplementation on the performance of growing and finishing dairy bulls offered grass silage-based diets

Need for protein supplementation in the diet of growing dairy bulls fed total mixed ration based on moderate digestible grass silage and barley

Performance of growing dairy bulls offered diets based on silages made of whole-crop barley, whole-crop wheat, hairy vetch and grass

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