scholarly journals Effects of Heated Drinking Water on the Growth Performance and Rumen Functionality of Fattening Charolaise Beef Cattle in Winter

Animals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2218
Author(s):  
Silvia Grossi ◽  
Luciana Rossi ◽  
Matteo Dell’Anno ◽  
Stefano Biffani ◽  
Carlo Angelo Sgoifo Rossi
Keyword(s):  
Drinking Water ◽  
Beef Cattle ◽  
Growth Performance ◽  
Conversion Rate ◽  
Production Efficiency ◽  
Average Daily Gain ◽  
Feed Conversion ◽  
Ruminal Ph ◽  
Heated Water ◽  
Feed Conversion Rate

The effects of heated drinking water on growth performance and rumen functionality in fattening beef cattle during winter were evaluated. Newly received Charolaise bulls (n = 224) were allocated to two experimental groups: (i) water at room temperature (RTW) (weight 408 ± 34 kg); (ii) constantly heated water (25 °C) (HW) (weight 405 ± 38 kg). Growth performances, feed intake, feed conversion rate, water intake and carcass characteristics were evaluated. Internal reticuloruminal wireless boluses were used to collect rumen pH and temperature values every 10 min. Bodyweight was not affected by the water temperature, but the overall average daily gain (ADG) was significantly higher in the HW group (1.486 vs. 1.438 kg/head/day in the RTW; p = 0.047). Dry matter intake was significantly higher in the HW group (p = 0.001), even though the final feed conversion rate (FCR) was not influenced. There was also a tendency for better cold carcass weight (CCW) and carcass yield (CY) in the HW group. Drinking heated water reduced the time (min/day) during which the ruminal pH was below pH 5.8 or 5.5, and the time during which the temperature was lower than 37 or 39 °C (p < 0.001). The use of heated drinking water is a plausible a strategy for enhancing ruminal stability and the overall production efficiency in fattening beef cattle, which will lead to both better growth performance and higher ruminal stability.

scholarly journals Research on the Influence of the Light and Sexing on Growth Performance and Slaughter Results at Young Quails from Mixed Baloteşti Population of Eggs-Meat

2017 ◽  
Vol 74 (1) ◽  
pp. 15
Author(s):  
Lucian IONITA ◽  
Elena POPESCU-MICLOSANU ◽  
George NICA ◽  
Cornel Octavian PANA
Keyword(s):  
Weight Gain ◽  
Growth Performance ◽  
Conversion Rate ◽  
Live Weight ◽  
Control Group ◽  
Average Weight ◽  
Feed Conversion ◽  
Feed Conversion Rate ◽  
Average Weight Gain ◽  
Experimental Group

The purposes of determining the influence of the light and sexing on growth performance and slaughter results atyoung quails from Balotesti population, was organized an experiment on 150 quails, betwen age of 28 and 70 days. The chicks were divided into two groups (control and experimental), and growth and slaughter performance were determined separately by sex. Have studied 2 lighting programs, a program of continous lighting with photoperiod duration of 16 hours (16 L + 8 N, control group) and a program with lighting with asymetric hours intervals with photoperiod duration of 16 hours (10L+2N+6L+6N, experimental group).Males and females from the experimental group were recorded average performance of growth high during the period 28 - 70 days. Live weight at age of 70 days was higher with 7.54 %, average weight gain was higher with 14.86 % and feed conversion rate was lower with 13.51 % at males from experimental group compared to males from the control group. Also, the live weight at the age of 70 days was higher with 18.09 %; average weight gain was higher with 35.12 %, while feed conversion rate was reduced with 30.08 % on females from the experimental group compared to females from the control group.The results of the slaughter at 70 days were superior in the caseof females from the both groups versus males. The average weight of the carcase was higher with 17.53 % in case of the females than that of males from the experimental group, and the carcase yield was 65.37 % at the females and 65.56 % for males. Also, the average weight of the carcase was higher with 5.08 % in case of females compared to that males from the control group, and the carcase yield was 64.20 % to females 66.70 % on males.Superior results recorded in the case of females and males from the experimental group recommended the program of lighting with asymmetric hours intervals in the growth of youth quail. Also, the higher slaughter results recorded in the case of females of the two groups recommended them in the meat production through a broiler of quail that combine advantages in the production of both males and females. 

307 Effect of Feeding Distilllers Grain from Wheat on Growth Performance of Growing and Finishing Beef Cattle

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 170-171
Author(s):  
Wenzhu Yang
Keyword(s):  
Beef Cattle ◽  
Growth Performance ◽  
Average Daily Gain ◽  
Barley Grain ◽  
Canola Meal ◽  
Finishing Diets ◽  
Ruminal Ph ◽  
Ruminal Acidosis ◽  
Research Findings ◽  
Finishing Beef Cattle

Abstract The uniqueness of wheat-based distiller grain (wDG) with high protein and digestible fibre gives great feeding opportunities for cattle as energy, protein or fiber source. This abstract summarizes recent research findings on the use of wDG in beef cattle diets. For growing beef cattle, steers fed diets (forage:concentrate, 55:45) with increasing replacement of barley grain with wDG from 0, 8, 16, 24 to 32% (DM basis) linearly (P &lt; 0.01) increased average daily gain (ADG) from 1.09 to 1.28 kg/d and DM intake (DMI) from 7.26 to 7.94 kg/d without affecting gain:feed (0.158). By comparing protein source of canola meal and corn DG in diets containing 60% of silage and 40% of barley grain, steers fed wDG diet had similar ADG (1.46 kg/d) with corn DG (1.51 kg/d), and had no differences in gain:feed (0.178) with canola meal (0.183). For finishing beef cattle, with increasing wDG from 10, 20 to 40% in the place of barley grain of finishing diets, the DMI linearly (P &lt; 0.01) increased from 10.2 to 10.9 kg/d, whereas, the gain:feed linearly (P &lt; 0.01) decreased from 0.172 to 0.159 without altering the ADG (1.74 kg/d). The wDG was also suggested to be fed as fiber source to replace roughage in finishing diet. Entirely substitution of wDG for roughage of finishing diet decreased (P &lt; 0.01) ruminal pH from 5.95 to 5.75 of beef heifers; however, the ADG and gain:feed of steers were not affected. The results suggested that although substitution of wDG for roughage in finishing diets may increase the incidence of ruminal acidosis, this outcome does not appear to adversely impact the performance of the cattle. The wDG can be successfully incorporated to substitute a portion of grain or roughage within growing and finishing diets with minimal or no adverse impact on cattle growth performance.

scholarly journals Effect of Different Fatty Acid Sources of Diet on Growth Performance of Botia Botia macracanthus Bleeker

2008 ◽  
Vol 7 (2) ◽  
pp. 199 ◽  
Author(s):  
. Sunarto ◽  
. Sabariah
Keyword(s):  
Growth Rate ◽  
Fatty Acid ◽  
Fish Oil ◽  
Growth Performance ◽  
Conversion Rate ◽  
Corn Oil ◽  
Coconut Oil ◽  
Fish Oils ◽  
Feed Conversion ◽  
Feed Conversion Rate

<p>Fish requires essential fatty acid for growth. Freshwater fish needs linoleat fatty acid (n-6) or combination of linoleat and a-linolenat acids (n-3).  Fish oil contains higher level of n-3, corn oil is rich of n-6, while coconut oil is rich of saturated fatty acids.  This study was conducted to determine the effect of fatty acid sources in diet on growth performance of botia <em>Botia macracanthus</em>. Sources of fatty acid examined were coconut oil (control), corn oil, fish oil, and corn oil + fish oil + coconut oil. The results of study show that daily growth rate of fish fed on diet containing mix of corn-coconut-fish oils (8.39%) and only corn oil (8.15%) was higher (p<0.05) compared to that of fish fed on diet containing fish oil (7.67%) and coconut oil (6.62%).  Feed conversion rate of fish fed on diet containing mix of corn-coconut-fish oils (2.12%) and only corn oil (2.34%) was lower (p<0.05) than that of fish fed on diet containing fish oil (2.97%) and coconut oil (3.74%).  Growth rate and feed conversion rate of fish fed on diet containing mix of corn-coconut-fish oils and only corn oil was similar (p>0.05).  Survival rate of fish at all treatments was similar, ranged from 90.00 to 93.33%.  Thus, the results suggested that diet containing only corn oil is suitable for botia to obtain higher growth rate and lower feed conversion rate.</p> <p>Keywords: fatty acid, growth performance, botia, <em>Botia macracanthus</em></p> <p><br /> ABSTRAK</p> <p>Ikan membutuhkan asam lemak essensial (EFA = Essential Fatty Acid) untuk pertumbuhannya.  Ikan air tawar memerlukan asam lemak linoleat (<em>n</em>-6) atau gabungan asam lemak linoleat (n-6) dan alfa-linolenat (n-3).  Minyak ikan banyak mengandung asam lemak <em>n</em>-3, minyak jagung kaya akan asam lemak n-6, sementara minyak kelapa banyak mengandung asam lemak jenuh.  Sumber asam lemak yang diuji adalah minyak kelapa  (kontrol), minyak jagung, minyak ikan, dan minyak jagung + minyak ikan + minyak kelapa. Hasil penelitian menunjukkan bahwa laju pertumbuhan harian ikan botia yang diberi pakan yang mengandung campuran minyak jagung-kelapa-ikan (8,39%) dan minyak jagung (8,15%) saja lebih tinggi (p<0,05) daripada yang diberi pakan mengandung minyak ikan (7,67%) dan minyak kelapa (6,62%).  Nilai konversi pakan pada ikan yang diberi pakan mengandung minyak jagung-kelapa-ikan (2,12%) dan minyak jagung (2,34%) lebih rendah (p<0,05) dibandingkan dengan yang diberi pakan mengandung minyak ikan (2,97%) dan minyak kelapa (3,74%).  Pertumbuhan dan konversi pakan pada ikan yang diberi pakan mengandung campuran ketiga minyak dan hanya minyak jagung adalah tidak berbeda (p>0,05).  Kelangsungan hidup ikan pada semua perlakuan relatif sama, yaitu berkisar antara 90,00-93,33%. Dengan demikian, pakan untuk ikan botia cukup mengandung minyak jagung saja untuk mendapatkan laju pertumbuhan yang tinggi dengan konversi pakan yang rendah.</p> <h2>Kata kunci: asam lemak, kinerja pertumbuhan, ikan botia, <em>Botia macracanthus</em></h2>

scholarly journals Effect of essential oil blends and a non-ionic surfactant on rumen fermentation, anti-oxidative status and growth performance of lambs

2021 ◽  
Author(s):  
Ludmila C G Passetti ◽  
Rodrigo A C Passetti ◽  
Tim A McAllister
Keyword(s):  
Essential Oils ◽  
Growth Performance ◽  
Rumen Fluid ◽  
Average Daily Gain ◽  
Rumen Fermentation ◽  
Oxidative Status ◽  
Ionic Surfactant ◽  
Growth Responses ◽  
Feed Conversion ◽  
Ruminal Ph

Abstract This study aimed to evaluate the effect of essential oils (OEO; XEO) and an emulsifier on rumen fermentation, anti-oxidative status and the growth performance of lambs. A finishing study was conducted using 35 females and 35 males Suffolk × Canadian Arcott crossbreed lambs, fed a 16:84 forage:concentrate pelleted barley-based with either Control; Bovatec (0.018% Bovatec); Emulsifier (0.25% of Emulsifier); OEO (0.11% of blend 1); XEO (0.0125% of blend 2); OEO+ Emulsifier; or XEO + Emulsifier. The rumen fluid of all lambs was sampled via stomach tubing to measure ruminal pH, volatile fatty acid (VFA) and NH3 concentrations and enumerate protozoa. Ruminal pH, molar proportions of individual VFA (except for acetate) and ammonia concentration were similar among treatments. The acetate and total VFA concentrations were lower (P = 0.03) for lambs receiving OEO, while protozoa numbers were increased (P = 0.01). No changes were observed in blood glutathione peroxidise or total superoxide dismutase, but there was a tendency for a reduction in thiobarbituric acid reactive substances in lambs fed diets containing OEO or XEO. No differences among diets were observed in coccidia oocyst counts (OPG) in faeces, however, prevalence of coccidia in lambs was reduced (Cramer’s V = 0.081) with OEO. Lambs fed OEO had the highest (P &lt; 0.01)` DMI (1.48 kg.d -1), whereas those fed XEO had the lowest (1.30 kg.d -1). Average daily gain (ADG), feed conversion (DMI/ADG) and carcass measurements (hot carcass weight, carcass dressing percentages) were not affected by EO or EM. Results from this study suggest that EO may alter rumen fermentation and protozoa counts and increase DMI. However, these responses did not appear to be enhanced by Emulsifier as its inclusion with essential oils did not enhance fermentation or growth responses.

scholarly journals Effects of Three-Layer Encapsulated Tea Tree Oil on Growth Performance, Antioxidant Capacity, and Intestinal Microbiota of Weaned Pigs

2021 ◽  
Vol 8 ◽  
Author(s):  
Lixue Wang ◽  
Ying Zhang ◽  
Ling Liu ◽  
Fei Huang ◽  
Bing Dong
Keyword(s):  
Antioxidant Capacity ◽  
Growth Performance ◽  
Conversion Rate ◽  
Nutrient Digestibility ◽  
Intestinal Morphology ◽  
Tea Tree Oil ◽  
Feed Conversion ◽  
Weaned Pigs ◽  
Tea Tree ◽  
Feed Conversion Rate

Tea tree oil (TTO) exerts key roles in improving growth performance of pigs. However, knowledge is limited regarding comparative effects of Encp TTO and Un-encp TTO supplementation on growth performance of pigs. A study determined the effects of TTO or its capsulation on growth performance, antioxidant capacity, and intestinal microbiome of weaned pigs. A total of 144 healthy pigs (8.5 ± 0.24 kg) were subjected to four treatments for a 28-d trial with six replicates per treatment and six pigs per pen: negative control, NC; positive control, PC (antibiotic supplemented); Un-encp TTO (supplemented with unencapsulated TTO); Encp TTO (supplemented with encapsulated TTO). NC, TTO, and PC treatments were compared with regard to improved average daily gain (ADG), average daily feed intake (ADFI), feed conversion rate, nutrient digestibility, and intestinal morphology (p &lt; 0.05) and decreased diarrhea rate. TTO- and PC-treated pigs had higher levels of serum superoxide dismutase, glutathione peroxidase, and immunoglobulin G; lower levels of liver aspartate aminotransferase and alanine aminotransferase; and improved concentrations of interleukin 10 (IL-10), tumor necrosis factor α, and IL-1β (p &lt; 0.05). TTO- and PC-treated pigs had higher abundance of beneficial bacterial species Subdoligranulum and lower abundance of diarrhea associated species Escherichia–Shigella in cecal and colonic digesta (p &lt; 0.05). Encapsulation of TTO preserved more activities of TTO than its unencapsulated counterpart by showing higher ADG, ADFI, and feed conversion rate during day 1 (d1) to d14 (p &lt; 0.05) and tended to lower diarrhea rate (p = 0.083) and improve villous height/crypt depth (VH/CD) ratio (p = 0.089) in jejunum. Encapsulation of TTO also improved antioxidant indexes and decreased liver injury and inflammation accordingly (p &lt; 0.05). Encapsulated TTO-treated pigs had higher abundance of beneficial Clostridium_sensu_stricto_1 and lower the abundance of harmful Escherichia–Shigella in cecal and colonic digesta (p &lt; 0.05). Our results demonstrated TTO benefits on improving growth performance of weaned pigs and further proved that encapsulation of TTO was superior to its unencapsulated counterpart at multiples. Encapsulated TTO was similar to the PC group and could be potentially an alternative of feed antibiotics for weaned pigs.

scholarly journals EVALUATION OF FEEDING RATES IN THE PRODUCTION OF LITOPENAEUS VANNAMEI SHRIMP USING ARTIFICIAL SUBSTRATES

2018 ◽  
Vol 19 (0) ◽  
Author(s):  
César Rocha Nunes Antunes ◽  
Carlos Alberto da Silva Ledo ◽  
Clóvis Matheus Pereira ◽  
José dos Santos
Keyword(s):  
Water Quality ◽  
Growth Performance ◽  
Litopenaeus Vannamei ◽  
Conversion Rate ◽  
Feeding Rate ◽  
Artificial Substrates ◽  
Average Weight ◽  
Feeding Rates ◽  
Feed Conversion ◽  
Feed Conversion Rate

Abstract The objective of this study was to evaluate the the influence of feeding rate and different artificial substrates on both the water quality and growth performance of Litopenaeus vannamei shrimp. The experimental design was randomized blocks with five treatments and four replicates, with a density of 30 shrimp m-2 and mean weight of 2.8 g. The experiment lasted 49 days, and during this period, artificial substrates did not influence the water quality. The increase in the feeding rate influenced the dissolved oxygen of treatments. The final average weight, average final length, final biomass, productivity, and feed conversion rate showed significant differences (p > 0.05). The best food conversion factor was provided by the treatment with a feeding rate of 2%. The treatment with a feeding rate of 4% of biomass showed the best growth performance, except for the feed conversion rate. Results showed that for the percentage of 25% of the area of artificial substrates, there is an optimum feeding rate of between 5.13% and 5.54% of shrimp biomass, resulting in maximum production.

A note on the growth performance and carcass composition of Texel- and Suffolk-sired lambs in an intensive feeding system

1980 ◽  
Vol 30 (2) ◽  
pp. 311-314 ◽  
Author(s):  
M. G. A. Latif ◽  
E. Owen
Keyword(s):  
Growth Performance ◽  
Feed Intake ◽  
Conversion Rate ◽  
Carcass Composition ◽  
Feeding System ◽  
Feed Conversion ◽  
Ad Libitum ◽  
Total Fat ◽  
Feed Conversion Rate

ABSTRACTSixteen male and 16 female lambs were used to compare the performance and carcass composition of Texel- and Suffolk-sired lambs out of Finnish Landrace × Dorset Horn ewes. Lambs were weaned at 6 weeks of age and individually fed an all-concentrate diet ad libitum to slaughter at 30 kg (females) and 36 kg (males). At slaughter, offal weights were recorded and carcass left sides jointed and dissected.Breed types did not differ in weight at weaning, growth iate, age at slaughter, daily feed intake or feed conversion rate. Texels had heavier carcasses (17·2 v. 16·4 kg: P <0·01) and higher dressing percentages (50·7 v. 49·2: P <0·05) than Suffolks. Texel-cross carcasses had 2·9% more lean (P <0·05), but 3·8% less total fat CP <0·01).The results indicate the suitability of Texel-sired lambs for intensive lamb production.

Effects of daidzein on growth performance, blood metabolites and meat quality of finishing Xianan beef cattle

2019 ◽  
Vol 157 (2) ◽  
pp. 169-175
Author(s):  
H. Liang ◽  
X. H. Zhao ◽  
K. Pan ◽  
L. J. Xu ◽  
Z. H. Yi ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Growth Performance ◽  
Meat Quality ◽  
Average Daily Gain ◽  
Control Group ◽  
Feed Conversion ◽  
Final Body Weight ◽  
Blood Biochemical ◽  
Lower Shear

AbstractAn experiment was conducted to determine the effects of supplementing different amounts of daidzein in a diet on the growth performance, blood biochemical parameters and meat quality of finishing beef cattle. Thirty finishing Xianan steers were distributed in three groups equilibrated by weight and fed three different dietary treatments (concentrate ratio = 80%): (1) control; (2) 500 mg/kg daidzein and (3) 1000 mg/kg daidzein, respectively. Steers were slaughtered after an 80-day feeding trial. Results showed that daidzein supplementation had no effect on the final body weight, average daily gain and feed conversion rate of steers. Steers fed with 1000 mg/kg daidzein had greater dry matter intake than those fed with control diets. Compared with the control group, the 1000 mg/kg daidzein group had a higher fat thickness, lower shear force and lightness. The pH, drip loss, cooking loss, redness (a*), yellowness (b*), moisture, ash, crude protein and intramuscular fat of the Longissimus dorsi muscle were unaffected by daidzein supplementation. Compared with the control group, the 1000 mg/kg daidzein group significantly increased the serum concentrations of insulin, free fatty acid and Glutamic-pyruvic transaminase. The 500 mg/kg daidzein group significantly increased the serum concentration of tetraiodothyronine compared with the control group. Supplemental daidzein did not affect the blood antioxidant ability and blood immune parameters in serum. In conclusion, daidzein supplementation above 500 mg/day modifies feed intake and metabolic and hormonal profile, with positive and negative effects on meat quality.

scholarly journals Enterococcus faecium PNC01 isolated from the intestinal mucosa of chicken as an alternative for antibiotics to reduce feed conversion rate in broiler chickens

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Yang He ◽  
Xuan Liu ◽  
Yuanyang Dong ◽  
Jiaqi Lei ◽  
Koichi Ito ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Intestinal Mucosa ◽  
Conversion Rate ◽  
Broiler Chickens ◽  
Intestinal Epithelial Cells ◽  
Relative Length ◽  
Intestinal Epithelial ◽  
Feed Conversion ◽  
Broiler Production ◽  
Feed Conversion Rate

Abstract Background The development and utilization of probiotics had many environmental benefits for replacing antibiotics in animal production. Bacteria in the intestinal mucosa have better adhesion to the host intestinal epithelial cells compared to bacteria in the intestinal contents. In this study, lactic acid bacteria were isolated from the intestinal mucosa of broiler chickens and investigated as the substitution to antibiotic in broiler production. Results In addition to acid resistance, high temperature resistance, antimicrobial sensitivity tests, and intestinal epithelial cell adhesion, Enterococcus faecium PNC01 (E. faecium PNC01) was showed to be non-cytotoxic to epithelial cells. Draft genome sequence of E. faecium PNC01 predicted that it synthesized bacteriocin to perform probiotic functions and bacteriocin activity assay showed it inhibited Salmonella typhimurium from invading intestinal epithelial cells. Diet supplemented with E. faecium PNC01 increased the ileal villus height and crypt depth in broiler chickens, reduced the relative length of the cecum at day 21, and reduced the relative length of jejunum and ileum at day 42. Diet supplemented with E. faecium PNC01 increased the relative abundance of Firmicutes and Lactobacillus, decreased the relative abundance of Bacteroides in the cecal microbiota. Conclusion E. faecium PNC01 replaced antibiotics to reduce the feed conversion rate. Furthermore, E. faecium PNC01 improved intestinal morphology and altered the composition of microbiota in the cecum to reduce feed conversion rate. Thus, it can be used as an alternative for antibiotics in broiler production to avoid the adverse impact of antibiotics by altering the gut microbiota. Graphic Abstract

Combined administration of bacteriocin- -producing, probiotic strain Enterococcus faecium CCM7420 with Eleutherococcus senticosus and their effect in rabbits

2013 ◽  
Vol 16 (4) ◽  
pp. 619-627 ◽  
Author(s):  
M. Pogány Simonová ◽  
A. Lauková ◽  
L. Chrastinová ◽  
I. Plachá ◽  
V. Strompfová ◽  
...  
Keyword(s):  
Growth Performance ◽  
Enterococcus Faecium ◽  
Average Daily Gain ◽  
Probiotic Strain ◽  
Cholesterol Concentration ◽  
Control Group ◽  
Feed Conversion ◽  
Eleutherococcus Senticosus ◽  
Commercial Diet ◽  
And Control

Abstract The effect of Enterococcus faecium CCM7420 (EF) - enterocin-producing and probiotic strain of rabbit origin, Eleutherococcus senticosus extract (ES) and their combination (ES+EF) was determined on selected bacteria in faeces and caecum content, leukocytes phagocytosis, blood biochemistry and growth performance. Ninety-six weaned rabbits were divided into 3 experimental (ES, EF, ES+EF) and control group (CG). The rabbits in the groups ES and EF+ES were fed commercial diet enriched with E. senticosus extract (30 g/100 kg feed), rabbits in groups EF and CG were fed untreated diet. The rabbits in the EF and ES+EF groups were administered with an overnight culture of E. faecium CCM7420 strain (500 μl/animal/day into water, 109 CFU/ml). The treatment period lasted 21 days. The microbiological examinations in faecal samples confirmed the presence of E. faecium CCM7420 strain. In groups EF and ES+EF, the reduction of faecal coliforms, Pseudomonas-like sp., Clostridium-like sp. and S. aureus was recorded. Leucocyte phagocytosis significantly increased in all experimental groups (P<0.0001) compared to CG. The lowest GPx values were measured in the ES+EF group. Higher total protein, triglycerides and calcium concentrations were detected in experimental groups compared to CG. The cholesterol concentration decreased in the ES group. The highest average daily gain was recorded in EF group; in ES+EF the better feed conversion ratio and no mortality was recorded. These results indicated that the dietary supplementation with the E. faecium CCM7420 and E. senticosus extract stimulate the leukocytes phagocytosis and reduces the potential pathogens in rabbits digestive tract without oxidative stress and improve the growth performance.

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