Effects of xylanase supplementation on feed intake, digestibility and ruminal fermentation in Rambouillet sheep

Vallejo, Laura; Salem, Abdelfattah Z.M.; Camacho, L.M.; Kholif, A. M.; Mariezcurrena, M. D.; Cipriano, M.; Alonso, M. U.; Olivares, Jaime Mendiola; López, Secundino

doi:10.1017/s0021859616000216

Cited by 18 publications

(11 citation statements)

References 34 publications

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“…consistent with the results of McAllister et al (2000), who reported that DM and OM consumption in lambs was not affected by the addition of mixed activity EE products to barley grain-based rations. However, growth performance results obtained from this research don't agree with the findings of Vallejo et al (2016), which reported a significant effect of low and moderate rates of xylanase on feed intake in sheep but not on high concentration. A previous study also reported that the increase in feed consumption with low EE application reflects the increase in ruminal fiber digestion and digesta passage rate (Beauchemin et al 2003).…”

Section: Feed Intake and Growth Performancecontrasting

confidence: 99%

“…Also, Miller et al (2008) reported no effect on total VFA concentration in the ruminal fluid adding fibrolytic enzymes to barley-based lamb diets. However, enzyme treatment of diets fed to lactating goats or sheep (40% berseem clover and 60% concentrate or 30% maize stover and 70% concentrate, respectively) had a positive effect on total VFA production in the study by Kholif et al (2007) and Vallejo et al (2016). Moreover, Yuangklang et al (2017) reported that the hydrolysis of fiber by enzymes had provided more substrate for microbial production of total VFA and thus increased the concentration of total VFA in the rumen.…”

Section: Rumen Fermentationmentioning

confidence: 94%

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Effect of Exogenous Enzyme Mixture on Growth Performance, Digestibility and Some Rumen Parameters of Finishing Lambs Fed High Whole Grain Hulled Barley Diet

Muruz

Çelik

Genç

2022

IJAR

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Background: Whole grain hulled barley has several nutritional limitations in diets for ruminants. Its fibrous hull which is resistant to ruminal microbial degradation and this could decrease performance. Therefore, tools that optimize the use of barley hull are required. Exogenous enzyme products including fibrolytic enzymes may be an important tool to improve the digestibility of whole grain, feed and improve the efficiency of lambs. Thus, this study aimed to investigate the effects of the supplementary exogenous enzyme mixture at three different levels on growth performance, digestibility and ruminal fermentation of male finishing lambs fed diets containing whole barley grain. Methods: Twenty-one Karayaka lamb (29.36±1.32 kg initial weight) were assigned to three experimental treatments: (1) Control, diet without exogenous enzyme; (2) 5 exogenous enzyme, diet with 5 g exogenous enzyme/head/day) and (3) 10 exogenous enzyme, diet with 10 exogenous enzyme g/head/day). Forage-free finishing diets were composed of 70% whole barley and 30% protein supplement. The experimental diet was offered to the animals for 56 days. Nutrient digestibility was determined during the last 4 days of the experiment. Result: The supplementation of exogenous enzyme did not affect dry matter intake. Increasing exogenous enzyme in whole barley grain-based diets did not alter digestibility of dry matter, organic matter, crude protein and neutral detergent fibre. Regarding, mean ruminal pH, NH3-N and ruminal total volatile fatty acid, there was no difference between control and both exogenous enzyme mixture levels. The findings of the current study indicate that there was no effect of exogenous enzyme mixture on lamb performance, digestibility and ruminal fermentation fed whole grain hulled barley-based diets in Karayaka lambs. Therefore, supplementing such diets with exogenous enzyme for fatting Karayaka lambs is not recommended.

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Section: Feed Intake and Growth Performancecontrasting

confidence: 99%

Section: Rumen Fermentationmentioning

confidence: 94%

Effect of Exogenous Enzyme Mixture on Growth Performance, Digestibility and Some Rumen Parameters of Finishing Lambs Fed High Whole Grain Hulled Barley Diet

Muruz

Çelik

Genç

2022

IJAR

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“…These agricultural straws contain considerable quantities of cellulose and hemicellulose and has the potential to be a valuable feed source for ruminants, but their nutritive feeding values are limited by their low ruminal degradability. Though the straws could be digested by diverse ruminal microorganisms, the fiber digestibility in rumen is still less than 50% ( Vallejo et al, 2016 ). Consequently, the majority of these agricultural straws are as wastes either left in the field for natural decay or burnt adding to environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Expression of a Recombinant Lentinula edodes Xylanase by Pichia pastoris and Its Effects on Ruminal Fermentation and Microbial Community in in vitro Incubation of Agricultural Straws

Liu

et al. 2018

Front. Microbiol.

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Agricultural straws, such as rice straw, wheat straw, and corn straw, are produced abundantly every year but not utilized efficiently in China. An experiment was conducted to determine the effects of recombinant xylanase on ruminal fermentation and microbial community structure in in vitro incubation of these straws. The recombinant xylanase from Lentinula edodes (rLeXyn11A) was produced in Pichia pastoris. The optimal temperature and pH for rLeXyn11A were 40°C and 4.0, respectively. The rLeXyn11A featured resistance to high temperature and showed broad temperature adaptability (>50% of the maximum activity at 20–80°C). Supplemental rLeXyn11A enhanced the hydrolysis of three agricultural straws. After in vitro ruminal incubation, regardless of agricultural straws, the fiber digestibility, acetate concentration, total volatile fatty acids (VFAs) production, and fermentation liquid microbial protein were increased by rLeXyn11A. Supplemental rLeXyn11A increased the ammonia-N concentration for corn straw and rice straw. High throughput sequencing and real-time PCR data showed that the effects of rLeXyn11A on ruminal microbial community depended on the fermentation substrates. With rice straw, rLeXyn11A increased the relative abundance of fibrolytic bacteria including Firmicutes, Desulfovibrio, Ruminococcaceae and its some genus, and Fibrobacter succinogenes. With wheat straw, rLeXyn11A increased the relative abundance of Ruminococcus_1 and its three representative species F. succinogenes, Ruminococcus flavefaciens, Ruminococcus albus. With corn straw, the fibrolytic bacteria Firmicutes, Christensenellaceae_R_7_group, Saccharofermentans, and Desulfovibrio were increased by rLeXyn11A. This study demonstrates that rLeXyn11A could enhance in vitro ruminal digestion and fermentation of agricultural straws, showing the potential of rLeXyn11A for improving the utilization of agricultural straws in ruminants.

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“…This result was similar to the report obtained by Rajabi et al [29] using pomegranate peel extract in fattening lambs as feed supplement. Vallejo et al [30] reported that addition of natural feed additive such as xylanase (at 3 µL/g) to the diets of sheep could reduce excretion of N through fecal and urine.…”

Section: Resultsmentioning

confidence: 99%

Effect of Varying Inclusion Levels of Fossil Shell Flour on Growth Performance, Water Intake, Digestibility and N Retention in Dohne-Merino Wethers

Ikusika

Zindove

Okoh

2019

Animals

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Simple SummaryWith the recent negative public opinion on chemical-based feed additive in many nations of the world (for the health implication and environmentally hazard it posed), naturally occurring feed additive are urgently needed to replace and support the sustainable development in livestock production. The potential of Fossil shell flour as performance enhancer was investigated in this study. The major finding was that fossil shell flour increased growth performance, apparent nutrient digestibility, N retention and make minimum use of water in Dohne-Merino wethers. Hence it could be an alternative to chemical-based feed additive in livestock production.AbstractThis study was carried out to determine the effect of varying levels of Fossil shell flour (FSF) supplementation on growth performance, water intake, digestibility and N retention in Dohne Merino sheep pursuant to establishing the optimum inclusion rate of this supplement in Dohne Merino diets. Sixteen Dohne-Merino wethers (18 ± 1.5 kg body weight) were used in a complete randomized design with four animals per treatment. Sheep were fed a basal diet without FSF addition (control, T1), or with the addition of FSF (2%, T2), (4%, T3) or (6%, T4) of the diet for 105 days. Treatment 3 (4% FSF) has the highest values of dry matter intake, total weight gain, N retention and for most of the apparent digestibility nutrients (CP, EE and Ash) compared to treatment T1, T2 and T4(p < 0.05). The urinary and fecal N excretion also significantly decreased in the FSF treated diets compared to the control (p < 0.05). Water intake values were highest in control and were significantly (p < 0.05) different from those in treatments 2 and 4, but not to treatment 3. It is concluded that 4% inclusion rate of FSF will give the best improvement on growth performance, diet digestibility and N retention of Dohne-Merino sheep. Also, the addition of FSF in the diets of sheep is a safe natural additive that can help to reduce environmental pollution by reducing fecal and urinary N excretion.

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Effects of xylanase supplementation on feed intake, digestibility and ruminal fermentation in Rambouillet sheep

Cited by 18 publications

References 34 publications

Effect of Exogenous Enzyme Mixture on Growth Performance, Digestibility and Some Rumen Parameters of Finishing Lambs Fed High Whole Grain Hulled Barley Diet

Effect of Exogenous Enzyme Mixture on Growth Performance, Digestibility and Some Rumen Parameters of Finishing Lambs Fed High Whole Grain Hulled Barley Diet

Expression of a Recombinant Lentinula edodes Xylanase by Pichia pastoris and Its Effects on Ruminal Fermentation and Microbial Community in in vitro Incubation of Agricultural Straws

Effect of Varying Inclusion Levels of Fossil Shell Flour on Growth Performance, Water Intake, Digestibility and N Retention in Dohne-Merino Wethers

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