Effect of rumen-degradable protein balance deficit on voluntary intake, microbial protein synthesis, and nitrogen metabolism in growing double-muscled Belgian Blue bulls fed corn silage-based diet1,2,3

Valkeners, Damien; Thewis, André; Laere, M. Van; Beckers, Yves

doi:10.2527/jas.2007-0258

Cited by 25 publications

(22 citation statements)

References 31 publications

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“…Protein provided in supplements likely alleviated an ammonia nitrogen deficiency in rumen and thereby promoted DM and OM digestibility in the present study. Highest digestibility of CP in 25% CP group in the present study is in agreement with the previous findings (Gilbery et al 2006;Valkeners et al 2008). Increased digestible CP content of diets is due to the fact that increased CP concentration in supplements increased the rate of digestibility and availability of CP in the diets.…”

Section: Apparent Digestibility and Nutritive Valuesupporting

confidence: 95%

“…In a recent study, a linear increase (P=0.02) of ADG was reported with increasing levels of rumen-degradable protein of concentrate feed in beef bulls fed corn silage-based diet (Valkeners et al 2008), which is consistent with the present findings. The reasons behind the improvement of ADG with increased protein density of supplements can be explained by the fact that higher levels of protein may increase the availability of substrates at the tissue levels for anabolic activities, which ultimately reflected in the growth rate of the animals.…”

Section: Feed Intakesupporting

confidence: 94%

“…Voluntary DM intake (kg/day) increased linearly (P=0.02) when rumen-degradable protein levels increased in the diet of beef bulls fed corn silage (Valkeners et al 2008), which is in agreement with the present findings. According to Beaty et al (1994), wheat straw intake increased quadratically with increasing CP concentration in supplement up to 30% and reduced thereafter.…”

Section: Feed Intakesupporting

confidence: 93%

“…Austin (2001) reported increased dry matter (DM) intake, average daily gain (ADG) and feed efficiency of heifers with increasing crude protein (CP) levels in the supplements. In a recent study, Valkeners et al (2008) observed linear increased of DM intake, CP digestibility, and ADG with increasing rumen-degradable protein levels in the ration of beef bulls fed corn silagebased diet. The nutrient requirements of RCC may differ from other indigenous types.…”

Section: Introductionmentioning

confidence: 95%

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The value of protein-rich supplements on the performance of Red Chittagong heifers (Bos indicus) fed urea molasses straw-based diet

Islam

Khan

Bhuiyan

et al. 2010

Trop Anim Health Prod

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The objective of the study was to observe the effect of protein density of concentrate mixture on the growth performance of Red Chittagong Cattle (RCC) heifers (Bos indicus), an endangered variety in Bangladesh. The experiment was conducted for a period of 90 days with 12 RCC heifers, and the animals were divided into four groups on the basis of their initial live weight. The animals were assigned at random to four dietary treatments having three replications in each in a randomized complete block design. Three iso-energetic [10.5 MJ metabolizable energy (ME)/kg dry matter (DM)] concentrate mixtures were formulated to provide protein concentrations (%) of 15, 20, and 25 for T(1), T(2), and T(3), respectively. Crude protein (CP) content of control diet was 7.08%. Animals of all groups were fed urea molasses straw (UMS) ad libitum and green grass at a rate of 20% of total DM intake. Digestibility of DM was highest in the treatment group fed 25% CP supplement (T(3)) and lowest in the unsupplemented group (T(0)). Average daily gain increased with increasing CP concentration in supplements, but mean difference was not significant between the 20% and 25% CP groups. Feed cost per kilogram live weight gain was lowest (P> 0.05) in 20% CP supplement and highest in the unsupplemented group. The results revealed that the CP concentration of 20% in concentrate mixture containing 10.5 MJ ME is cost effective with the UMS-based diet of RCC heifers for better nutrient digestibility and growth.

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Section: Apparent Digestibility and Nutritive Valuesupporting

confidence: 95%

Section: Feed Intakesupporting

confidence: 94%

Section: Feed Intakesupporting

confidence: 93%

Section: Introductionmentioning

confidence: 95%

See 2 more Smart Citations

The value of protein-rich supplements on the performance of Red Chittagong heifers (Bos indicus) fed urea molasses straw-based diet

Islam

Khan

Bhuiyan

et al. 2010

Trop Anim Health Prod

View full text Add to dashboard Cite

show abstract

“…Feed samples were stored at À20°C pending analysis for chemical composition. In addition, barley silage samples were collected twice a week during the experiment for microwave DM determination (Valkeners et al 2008). Briefly, a sample of approximately 100 g was heated in a microwave oven for 4 min.…”

Section: Experimental Treatments Feed Samples and Feed Chemical Analmentioning

confidence: 99%

Effect of partially replacing a barley-based concentrate with flaxseed-based products on the rumen bacterial population of lactating Holstein dairy cows

et al. 2017

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Aims: The effects of partial replacement of a barley-based concentrate with flaxseed-based products on the rumen bacterial population of lactating Holstein dairy cows were evaluated. Methods and Results: Treatments fed were CONT, a normal diet that included barley silage, alfalfa hay and a barley-based concentrate that contained no flaxseed or faba beans; FLAX, inclusion of a nonextruded flaxseed-based product containing 55Á0% flaxseed, 37Á8% field peas and 6Á9% alfalfa; EXT, similar to FLAX, but the product was extruded and EXTT, similar to FLAX, but product was extruded and field peas were replaced by high-tannin faba beans. The rumen bacterial population was evaluated by utilizing 16S rRNA gene sequencing. Most abundant phyla, families and genera were unaffected. However, some taxa were affected; for example, unsaturated fatty acid content was negatively correlated with Clostridiaceae, and tannin content was negatively correlated with BS11 and Paraprevotellaceae. Conclusions: Predominant rumen bacterial taxa were not affected, but the abundance of some taxa found in lower proportions shifted, possibly due to sensitivity to unsaturated fatty acids or tannins. Significance and Impact of the Study: Flaxseed-based products were effective for partially replacing barley-based concentrate in rations of lactating dairy cows. No negative effects of these products were observed on the abundance of predominant rumen bacterial taxa, with only minor shifts in less abundant bacteria.

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Effects of rumen-degradable protein balance on rumen fermentation in continuous culture fermenters

Gao

Cao

et al. 2011

Front. Agric. China

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Effect of rumen-degradable protein balance deficit on voluntary intake, microbial protein synthesis, and nitrogen metabolism in growing double-muscled Belgian Blue bulls fed corn silage-based diet1,2,3

Cited by 25 publications

References 31 publications

The value of protein-rich supplements on the performance of Red Chittagong heifers (Bos indicus) fed urea molasses straw-based diet

The value of protein-rich supplements on the performance of Red Chittagong heifers (Bos indicus) fed urea molasses straw-based diet

Effect of partially replacing a barley-based concentrate with flaxseed-based products on the rumen bacterial population of lactating Holstein dairy cows

Effects of rumen-degradable protein balance on rumen fermentation in continuous culture fermenters

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