Effect of using the Matrix Values for NSP-degrading enzymes on performance, water intake, litter moisture and jejunal digesta viscosity of broilers fed barley-based diet (original) (raw)
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2018
This experiment was conducted in the poultry farm of veterinary medicine college, University of Kufa . The purpose of this study was evaluated the effect of Rovabio multienzyme. With five levels (0.125,0.250,0.375,0.500%) on the productivity and physiological characteristics of the 300 bird (Ross-308). With 40 ± 2 g initial body weight at day one. A completely randomized design with 5 treatments and 3 replications were fed experimental diets included, (1) basal diet no enzymes (control),( 2) basal diet + 1.25 kg/ton enzymes, (3). Basal diet +2.5 kg/ton enzyme, (4) basal diet + 3.75 kg/ton enzyme, (T5) basal diet+5 kg/ton enzyme. The diets of all groups were formulated in an isonitrogeous and isoenergetic diet based on wheat/barley. Data on feed consumption, weight gain, feed conversion ratio, were collected for 3 periods starter (1-21d), finisher (22-42 d), and total (1-42 d). Carcass characters. Biochemical & hematocrit parameters were collected for end total period (42d). Results ...
Animal Feed Science and Technology
It is now well established that exogenous microbial -glucanases effectively contribute to improve the nutritive value of barley based diets for broilers while they are predominantly effective in the first stages of the production cycle. Here, the performance of broilers fed on barley-based diets supplemented with a -glucanase enzyme mixture, in part or during the entire length of the production cycle, was evaluated. Six hundred 1-day-old Ross 308 chicks were randomly divided into 4 groups. Animals were fed on a barley-based diet supplemented with a commercial enzyme cocktail for the entire duration of the trial (35 days) or exclusively during the first 11 or 23 days of the experiment. Animals of the control group were fed on the basal diet not containing the microbial biocatalyst mixture. Body weight and feed intake were recorded weekly and weight gain and feed conversion ratios were determined. At the end of the trial, 2 animals were slaughtered to collect gastrointestinal contents to evaluate viscosity and enzymatic activity. Weight/length of gastrointestinal compartments were also recorded. Data revealed that all -glucanase supplemented groups outperformed non-supplemented birds at day 35. Significant differences in body weight were detected at day 11, suggesting that response to enzyme supplementation occurs, primarily, during the initial stages of broiler growth. In addition, final body weight of animals fed on diets supplemented during the first 11 or 23 days of the experiment was identical to animals supplemented during the entire trial (P>0.05). Together the data suggest that in barley-based diets exogenous enzymes act primarily in the earliest periods of broilers growing period and that enzyme supplementation may be restricted to the first 11 days of the production cycle without negatively affecting animal performance. Zymogram analysis allowed detecting -glucanase activity in the crop of non-supplemented birds at day 35. This activity does not arise from endogenous enzymes present in the feed suggesting colonization of the crop with a -glucanase secreting microbial population. Although this activity was not sufficient to reduce digesta viscosity in the upper portions of the GI tract when compared with birds exposed during the entire period of the experiment to the exogenous enzymes, it might have contributed to attenuate the antinutritive effects of -glucans at later stages of animal growth.
Journal of Central European Agriculture, 2012
Two trials were conducted to study the effect of inclusion of hull-less barley and exogenous enzyme to broiler diet on the growth performance, apparent metabolisable energy (AME) and Nutrient digestibility of broiler chickens. The experiments were 3×4 factorial arrangements with three levels of enzyme (0, 300 and 600 g/ton) and four levels of hull-less barley inclusion (0, 10, 20 and 30%) in diet. The digestion trial was performed in battery cage with 648 male broiler chickens where twelve experimental diets were fed to the chickens from 15-21 (starter) and 35-45 (finisher) days of age. In the growth trial, the experimental diets were fed to 960 broiler chicks distributed in 48 pens for a 7-week feeding trial on growing (0-3 weeks), grower (4-5 weeks) and finisher (6-7 weeks) periods. Results showed that increasing the amount of hull_less barley inclusion decreased feed intake and live-weight gain both in the starter and grower period (P<.0.01) but, did not significantly influence in finisher period. At the overall rearing period (0-49 days), increasing amount of hull-less barley in diet significantly decreased feed intake, weight gain, and feed conversion ratio (p<0.01). Increasing in hull-less barley inclusion rate, increased relative weight of gastrointestinal track, liver and ceca (P<0.01) but, did not influence the relative weight of abdominal fat and gizzard as well as the rate of mortality. Hull-less barley inclusion in diet decreased dietary AME and ileal and total tract digestibility of organic matter, crude protein, crude fat and starch in the starting period (p<0.01). The hull-less barley inclusion, however, did not significantly influence the nutrient digestibility (exclude crude fat) and AME in the finishing period. Enzyme supplementation did not show improvement in growth performance and nutrient digestibility in broilers. Increasing the amount of hull-less barley in the diet had the most negative effect on nutrient digestion of broilers at starter period and the reduction in broiler performance probably due to the depressed nutrient digestion. The magnitude of the reduction in digestibility and performance depends on the soluble NSPs concentration of hull-less barley containing diets.
Poultry Science, 2008
We studied the influence of enzyme supplementation (ES) of the diet and heat processing (HP) of barley on digestive traits and productive performance of broilers from 1 to 42 d of age. There were 6 diets arranged factorially with 2 doses (0 and 500 ppm) of a fungal enzyme complex with β-glucanase and xylanase activity and 3 HP of barley (raw, micronized, and expanded). In addition, a control diet based on raw corn without ES was also included from 1 to 21 d of age. Enzymes reduced intestinal viscosity (IV) at all ages (P ≤ 0.001) and water intake at 21 d of age (P ≤ 0.01) and increased DM of the ileal contents at 28 d (P ≤ 0.001). Also, ES increased total tract apparent retention of nutrients and BW gain and feed conversion ratio from 1 to 42 d of age (P ≤ 0.001). Heat processing of barley increased
Effect of Multi-Enzymes Supplementation on Growth Performance of Broiler
2014
Non-starch polysaccharides (NSPs) are not fully digested by broiler's endogenous enzymes and consequently the soluble NSPs in feed results in high digesta viscosity and poor retention of nutrients. Supplementation of NSPs digesting enzymes may release the nutrients from feed and reduce the anti-nutritional effects of NSPs. The present study was conducted to determine the effects of NSPs digesting enzymes (Zympex) in broiler chicks. A total of 120 day old broiler chicks (Hubbard) were categorized into 3 treatments and each treatment was having four replicates comprised of 10 chicks in each. Dietary treatments comprised of Basal diet (2740 KCal/kg) as control-1 (T1), low energy diet (2630 KCal/kg) control-2 (T2) and low energy diet with 0.5 gm/kg enzyme as T3. Multi-enzymes supplementation showed significant (P 0.05), feed consumption was significantly lower (P<0.05) in 5 th week and results showed poor FCR (P<0.05) in 2 nd , 3 rd and 4 th week but non-significant effect in ...
Pakistan Journal of Botany, 2009
An experiment was conducted to evaluate the efficacy of multi enzyme in broiler diets containing varying levels of sunflower meal and crude fiber. Sixteen isonitrogenous experimental diets were prepared using 0, 5, 10 and 15% SFM and 4, 5, 6 and 7% CF, respectively with and without enzyme supplementation and fed to 480 day old broiler chicks. Data on feed consumption, weight gain, feed conversion ratio and dressing percentage was collected. Results showed significant differences (p<0.05) among different experimental diets for weight gain and feed conversion. The highest weight gain was observed in chicks fed on diet containing 10% SFM and 6% CF with Grindazym while the lowest weight gain was obtained on diet having 10% SFM and 6% CF without enzyme supplementation. Diet containing 15% SFM and 7% CF with NIBGE enzyme @1% of 2.5 Fold was found best on the other hand diet containing 5% SFM and 5% CF without enzyme supplementation had poorest feed conversion among all the experimental diets. Feed intake during the experimental period was not influenced (p>0.05) either by dietary SFM and CF level or enzyme supplementation. However, maximum feed was consumed by birds fed diet containing 5% SFM and 5% CF without enzyme supplementation. While the minimum feed intake was observed on diet formulated with 15% SFM and 7% CF without addition of any enzyme. Dressing percentage was calculated as carcass weight excluding skin including internal organs viz., heart, liver, gizzard and kidneys of the birds. No differences (p>0.05) were observed for dressing percentages on different experimental diets. Results from this experiment suggest that enzyme supplementation can improve nutritive value of high fiber broiler diets. Broiler chicks can grow faster and more efficiently on a diet containing fiber degrading enzymes than on a diet without enzymes.
Heat processing of barley and enzyme supplementation of diets for broilers
Poultry Science, 2003
The influence of heat processing (HP) of barley and enzyme supplementation (ES) of the diet on digestive and performance traits of broilers to 21 d was studied. There were four treatments arranged factorially with two barley-processing treatments (raw or heated), two levels of ES (0 or 500 ppm), and five replicates per treatment. Chicks fed HP barley grew faster than broilers fed raw barley until 8 d of age, but the effect disappeared thereafter. In general, ES improved broiler performance at all ages. Intestinal viscosity was increased by HP of barley (P ≤ 0.05) and reduced by ES (P ≤ 0.001), and the decrease in viscosity caused by ES was greater for HP than for raw barley diets (HP × ES; P ≤ 0.05). Heat processing of barley and ES of the diet improved apparent retention of nutrients (P ≤ 0.001). Age affected apparent retention of (Key words: barley, broiler, apparent retention of nutrients, enzyme supplementation, heat processing) 2003 Poultry Science 82:1281-1291 Abbreviation Key: BAU = bacterial amylase units; EE = ether extract; ES = enzyme supplementation; FXU = fungal xylanase units; HP = heat processing; L = linear; NDF = neutral detergent fiber; NSP = nonstarch polysaccharides; OM = organic matter; PU = protease units; Q = quadratic.
International Journal of Poultry Science, 2005
Seventy-two male broiler chickens were randomly distributed into groups of 6 totaling 12 groups. Three diets (Diet 1-Basal, maize-based with no enzyme; Diet 2-BDG + Enzyme-based and Diet 3-PKM + Enzyme-based) were formulated and randomly offered to any 4 of the groups. The aim was to compare the performance of the birds on the enzyme supplemented high fibre diets with those on the maize-based diet with no enzyme supplementation. Weight gain and feed intake were significantly (p<0.05) higher on the enzyme supplemented BDG and PKM diets at the starter phase. At the finisher phase, while feed intake was significantly (p<0.05) increased with enzyme supplementation, the weight gain was not significantly affected. The FCR also did not significantly change with enzyme supplementation at the starter phase, but at the finisher phase, feed conversion was significantly (p<0.05) poorer. Carcass measures did not significantly change with enzyme supplementation. Weight of the pancreas was significantly (p<0.05) increased and that of the kidney significantly (p<0.05) reduced in birds on the enzyme supplemented BDG and PKM diets. Apparent digestibility of crude protein, crude fat and crude fibre was significantly (p<0.05) higher with enzyme supplementation. The cost of feed per kg weight gain was lower in the enzyme supplemented diets only at the starter phase. But at the finisher phase, enzyme supplementation did not have any benefit in terms of feed cost. Enzyme supplementation resulted in the reduction of the amount of maize needed in the diets of the birds by 31% and 52% at the starter and finisher phases, respectively.
Animal Feed Science and Technology, 1995
The experiment was conducted to study the effect of extruded vs. unprocessed barley in the diet (400 g kg-') on the response of broiler chickens to Trichudermu uiride enzyme supplement (cellulase,10500Ug~';endo-~(1:3)(1:4)-glucanase;24000Ug~'andxylanase,32000Ug~').The four experimental diets were as follows: B, unprocessed barley; BE, unprocessed barley + enzyme (200 mg kg-'); ExB, extruded barley; ExBE, extruded barley + enzyme (200 mg kg-'). The diets were fed as pellets. Extruded compared with unextruded barley gave higher soluble fibre (28 vs. 36 g kg-') and lower insoluble (190 vs. 163 g kg-') and total (219 vs. 200 g kg-') dietary fibre values. Extrusion increased extract viscosity ( 1.3 vs. 3.7 cP) and water binding capacity ( 1.6 vs. 2.2 ml g-' dry matter) of the barley. During the first week, birds fed extruded barley in the diet increased water consumption (P 2 0.05). A significant depression in feed efficiency (days 7-2 1), feed AME, and in fat and protein utilisation was observed when extruded barley was included in the diet. Extrusion reduced the AME content of barley by 0.82 MJ kg-' DM. Inclusion of extruded barley in the diet potentiated the weight gain (2.8 vs. 7.6%; P = 0.3 1) and feed efficiency ( + 0.8 vs. -6%; P = 0.07) response to dietary enzyme. Greater enzyme effects with the diet containing extruded barley were also found for feed AME (1.6 vs. 2.9%; P=O.39), fat utilisation (0.4 vs. 5.4%; P~0.05), nitrogen utilisation ( -0.5 vs. 5.6%; P=O.12), as well as Pglucan degradability (10.4 vs. 15.6%; P=O.41). In general, the enzyme had more impact on chick performance than barley form. * Corresponding author. Tel. 01-632 32 55 (32 70); fax 01-632 1128. 0377.8401/95/$09.50 0 1995 Elsevier Science B.V. All rights reserved SSDIO377-8401(95)00779-2