scholarly journals Alternatives to antibiotics in diets of weaned piglets

2017 ◽  
Vol 47 (12) ◽  
Author(s):  
Soraia Viana Ferreira ◽  
Lívia Maria dos Reis Barbosa ◽  
Marcos Henrique Soares ◽  
Camila Schultz Marcolla ◽  
Débora Muratori Holanda ◽  
...  
Keyword(s):  
Organic Acids ◽  
Basal Diet ◽  
Negative Control ◽  
Intestinal Morphology ◽  
Daily Weight Gain ◽  
Experimental Unit ◽  
Average Weight ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Randomized Design

ABSTRACT: This experiment was conducted to evaluate the effect of growth promoter additives an alternative to antibiotics on performance, intestinal morphology and on microbiota of 21-to-35-day-old piglets. A total of 160 commercial crossbred piglets (males and females) with initial weight of 6.10±0.709kg were allotted in a completely randomized design with five treatments: Basal diet - Negative Control (NC); Basal diet + antibiotic (PC); Basal diet + mannanoligosaccharides (MOS); Basal diet + organic acids (OA), Basal diet + mannanoligosacharides + organic acids (MOS+OA), eight replicates and four piglets per experimental unit. The inclusion of additives in the diets had no effect (P>0.05) on the final average weight of piglets. Similarly, no effects (P<0.05) were observed on average daily feed intake and on average daily weight gain. The feed conversion improved (P<0.01) with the inclusion of additives in the diets compared to piglets fed with the NC. There was no effect (P>0.05) of the dietary additives on intestinal morphology and microbiota composition (enterobacteria and lactobacilli). Use of antibiotics, prebiotics, organic acids or prebiotics associated with organic acids in the diet improves feed conversion of piglets from 21 to 35 days of age. The additives have no major effects on piglets’ intestinal morphology and microbiota.

scholarly journals Effect of organic acids and essential oils on the performance of replacement pullets from their eighteenth to the seventeenth weeks of age

2016 ◽  
Vol 10 (3) ◽  
pp. 201
Author(s):  
Silvana Cavalcante Bastos-Leite ◽  
Eduardo Hálasson Araújo Alves ◽  
Alisson Melo de Sousa ◽  
Claudia De Castro Goulart ◽  
Jessica Paloma Mourão dos Santos ◽  
...  
Keyword(s):  
Organic Acids ◽  
Essential Oils ◽  
Positive Control ◽  
Negative Control ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Randomized Design ◽  
Effect Of Treatment ◽  
Completely Randomized Design ◽  
Basal Ration

The study aimed to evaluate the effect of organic acids and the combination of organic acids and essential oils on performance of replacement pullets hens. 360 animals from Hy-Line Brown lineage with eight weeks of age were distributed in a completely randomized design with four treatments and ten replicates. The experiment lasted 63 days. The treatments (diets) were: Treatment 1 - negative control (no growth promoter); Treatment 2 - positive control (with growth promoter); Treatment 3 – basal ration + organic acids; Treatment 4 – basal ration + organic acids + essential oils. The variables evaluated were the initial and final weights, weight gain, accumulated consumption and feed conversion. There was no significant effect of treatment on any of the investigated parameters. It was concluded that the inclusion of organic acids or a combination of acids and essential oils do not affect the productive performance of replacement pullets.

scholarly journals Lactose levels in diets for piglets weaned at 21 days of age

2011 ◽  
Vol 40 (6) ◽  
pp. 1233-1241 ◽  
Author(s):  
Juliano Pelição Molino ◽  
Juarez Lopes Donzele ◽  
Rita Flávia Miranda de Oliveira ◽  
Aloízio Soares Ferreira ◽  
Célia Alencar de Moraes ◽  
...  
Keyword(s):  
Weight Gain ◽  
Block Design ◽  
Basal Diet ◽  
Daily Weight Gain ◽  
Experimental Unit ◽  
Average Weight ◽  
Feed Conversion ◽  
Intestinal Microbial Community ◽  
Randomized Block Design ◽  
Villous Height

With the objective of evaluating levels of lactose in diets for piglets weaned at 21 days of age, it was carried out an experiment with 72 animals, with average weight of 6.12 kg, distributed in a completely randomized block design with four diets (0, 4, 8, and 12% lactose), six replicates, and 3 animals per experimental unit. Animals were fed the experimental diets from 21 to 35 days of age and they were fed a lactose-free basal diet from 36 to 49 days of age. The lactose levels did not affect daily weight gain, feed intake and feed conversion of piglets from 21 to 35 days of age. The use of lactose levels in the diets also did not affect performance of the piglets assessed from 21 to 49 days old. Diets also did not influence villous height, crypt depth and villous:crypt ratio. Lactose resulted in greater diversity and balance of the intestinal microbial community. The Lactobalillus spp. richness increases with the addition of lactose in diet up to the level of 8% in relation to the total number of intestinal microorganisms, which may a possible improvement of intestinal health.

scholarly journals Propolis extract in tshe diet of weaned piglets

2017 ◽  
Vol 48 (1) ◽  
Author(s):  
Liliane Maria Piano Gonçalves ◽  
Charles Kiefer ◽  
Camilla Mendonça Silva ◽  
Cássia Rejane Brito Leal ◽  
Stephan Alexander da Silva Alencar ◽  
...  
Keyword(s):  
Control Diet ◽  
Ethanolic Extract ◽  
Experimental Period ◽  
Negative Control ◽  
Daily Weight Gain ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Weaned Piglets ◽  
Propolis Extract ◽  
Bacteriological Profile

ABSTRACT: This study was conducted to assess the use of propolis ethanolic extract as an alternative to performance-enhancing antibiotics for piglets. Seventy piglets weaned at 21 days of age, with initial weights of 7.3±0.4kg and final weights of 24.9±1.2kg, were randomly assigned to five diets: positive control (diet with 200ppm antibiotic); negative control (diet without growth promoter); and diets with 100, 500, and 1,000ppm of brown propolis ethanolic extract, with seven replicates of two piglets each. The duration of the experimental period was 35 days. The diets did not influence (P>0.05) daily feed intake, daily weight gain, final weight, and feed conversion of animals. The bacteriological profile of the nasal swab presented a predominance of gram-positive bacteria commonly associated with the mucous membranes in all samples. Rectal swabs did not present atypical bacterial isolates. The use of ethanolic propolis extract in diets did not alter the performance of weaned piglets, nor did it affect the bacteriological profile, fecal score, or the occurrence of diarrhea in piglets.

scholarly journals Xylanase and β-glucanase in maize- and soybean meal-based diets for broilers

2020 ◽  
Vol 41 (6supl2) ◽  
pp. 3259-3274
Author(s):  
Thiago Ferreira Diana ◽  
◽  
Luiz Fernando Teixeira Albino ◽  
Horácio Santiago Rostagno ◽  
Bruno Figueiredo de Almeida ◽  
...  
Keyword(s):  
Soybean Meal ◽  
Production Efficiency ◽  
Efficiency Index ◽  
Positive Control ◽  
Negative Control ◽  
Metabolizable Energy ◽  
Experimental Unit ◽  
Feed Conversion ◽  
Randomized Design ◽  
Completely Randomized Design

The objective of this study was to evaluate the effect of adding different xylanase and ?-glucanase enzyme blends to maize- and soybean meal-based diets on performance and energy metabolizability in broilers. Two experiments were carried out with broilers of the COBB 500 strain. In the first experiment, 1960 chicks were assigned to a completely randomized design with a 2 × 3 + 1 factorial arrangement, totaling seven treatments, namely, T1- Positive control (PC); T2 - Negative control 1 (NC1; PC minus 200 kcal kg-1 ME); T3 - NC1 + Blend A; T4 - NC1 + Blend B; T5 - Negative control 2 (NC2; PC minus 167 kcal kg-1 ME and 5% amino acids); T6 - NC2 + Blend A; and T7 - NC2 + Blend B. Fourteen replicates were used per treatment and 20 birds per experimental unit. The parameters evaluated at 21 and 42 days of age were weight gain (WG), feed intake (FI) and feed conversion (FC). At 42 days, production efficiency index (PEI), viability and the yields of cuts were also calculated. Birds that received diets with a reduced nutritional value showed a reduction in WG and PEI and worsened FC as compared those of PC treatment (p < 0.05). However, the birds that consumed the NC2 diet with Blend B exhibited a similar WG to those in PC group (p > 0.05) from 1 to 21 days of life. For the yield of thigh + drumstick, the factors were statistically similar (p > 0.05) to those observed in the PC birds. In the second experiment, 432 fourteen-day-old chicks were distributed in a completely randomized design with seven treatments, with eight replicates per treatment and six birds per experimental unit. The apparent metabolizable energy (AME) and nitrogen-corrected AME (AMEn) values were determined. Overall, the NC2 diet with Blend B provided the highest AME and AMEn values; however, NC1 with the same enzyme blend was the treatment which provided the lowest values. The addition of xylanase and ?-glucanase enzyme blends to maize- and soybean meal-based diets improves WG at 21 days as well as PEI in broilers; however, it does not influence the yield of cuts. Enzymes (Blend B) improve the energy metabolization of broiler diets with reduced energy and amino acid levels.

scholarly journals EFEITO DA ADIÇÃO DE GENGIBRE (Zingiber officinale) EM PÓ SOBRE O DESEMPENHO DE FRANGOS DE CORTE NA FASE INICIAL

2017 ◽  
Vol 13 (Especial 2) ◽  
pp. 156-163
Author(s):  
Vilson Matias Pinto ◽  
Paulo Ricardo de Sá da Costa Leite ◽  
Mônica Maria de Almeida Brainer ◽  
Brena Cristine Rosário Silva ◽  
Leidyanne Guimarães Silva
Keyword(s):  
Zingiber Officinale ◽  
Positive Control ◽  
Negative Control ◽  
Production Performance ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Growth Promoters ◽  
Performance Variables ◽  
Randomized Design

The objective of this study was to evaluate the production performance of broilers with the addition of ginger (Zingiber officinale) in broiler diets in starter phases. Were used 630 broiler chicks in a completely randomized design with five treatments and seven repetitions with eighteen birds each. The treatments consist of a reference diet with corn and soybean meal and adding different levels of powdered ginger, five treatments, consisting of positive control, negative control and three levels of ginger (0.50%, 0.75%; 1.0%). Were evaluated at the end of each phase, feed intake, weight gain, feed conversion, body weight, pancreatic weight and length and weight of the intestine. The data will be submitted to analysis of variance and means to regression analysis with 5% significance. No effects of the treatments on the performance variables were observed in the initial stage of creation. With this result, at twenty-one days old, we observed the potential for substitution of growth promoters for powdered ginger. The inclusion of up to 1% of powdered ginger did not affect bird performance providing results similar to positive control treatments with growth promoter.

scholarly journals The effect of fermented pineapple peels in a diet that contains medicinal weeds on the performance broiler

2021 ◽  
Author(s):  
W Ibrahim ◽  
Nurhayati Nurhayati ◽  
R Mutia ◽  
M Hilmi
Keyword(s):  
Broiler Chicken ◽  
Positive Control ◽  
Negative Control ◽  
Daily Weight Gain ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Randomized Design ◽  
Pineapple Peel ◽  
Completely Randomized Design ◽  
Range Test

This study aimed to determine the effect of using fermented pineapple peel in the ration containing medicinal weeds on broiler chicken performance. The experiment was designed into a completely randomized design (CRD) with five treatments and five replicates. Treatments consisted of P0 = 0% of fermented pineapple peels meal (FPPM) in ration containing 0% medicinal weed (MW), positive control). P1 = 0% of fermented pineapple peels meal (FPPM) in the ration containing 2 % medicinal weed (MW), negative control). P2 = 7.5% of FPPM in the ration containing 2 % medicinal weed (MW). P3 = 15% of FPPM in the ration containing 2 % medicinal weed (MW). P4 = 22,5% of FPPM in the ration containing 2 % medicinal weed (MW). Two hundred two days of male broiler chicken were used in this study and kept for 42 days. The parameters were feed consumption, average daily weight gain, feed conversion ratio, slaughter weight. The observed data were analyzed by statistical product and service solution (SPSS 16.0), and Duncan's multiple range test tested significant effects among treatments. Results showed that the fermented pineapple peel meal up to 15% with other medicinal weeds was not influenced the broiler chicken performance.

scholarly journals Glutamine use in feeding juvenile pirarucu, Arapaima gigas (Schinz, 1822)

2020 ◽  
Vol 72 (5) ◽  
pp. 1789-1796
Author(s):  
A.P.S. Ramos ◽  
J.R. Luz ◽  
J.F.B. Melo ◽  
L.G.T. Braga
Keyword(s):  
Growth Performance ◽  
Intestinal Morphology ◽  
Glutamine Supplementation ◽  
Experimental Unit ◽  
Fish Nutrition ◽  
Average Weight ◽  
Anterior Portion ◽  
Intestinal Villi ◽  
Randomized Design ◽  
Arapaima Gigas

ABSTRACT This study aimed to evaluate glutamine supplementation effects on variables of growth performance, body composition, intestinal morphology and enzymatic aspects of juvenile Arapaima gigas. Research was conducted at the Fish Nutrition and Feeding Laboratory, where 60 examples of pirarucu (initial average weight of 82.12g) were distributed over 15 polyethylene tanks (310L), in a completely randomized design, with five treatments and three repetitions (four fish per experimental unit). Experimental diets were prepared containing five inclusion levels of the amino acid glutamine (0.0, 0.5, 1.0, 1.5 and 2.0%), supplied three times a day for 45 days. Quadratic effect was observed for the variables of growth performance, weight gain, food consumption, food conversion, and specific growth and protein efficiency rates. A significant effect was observed on intestinal villi at the height of the anterior portion and on activity of the enzyme’s alkaline proteases, lipase, amylase and aspartate aminotransferase. However, glutamine supplementation had no significant effect on survival rate. Inclusion of 1.02% of glutamine in the diets of juvenile pirarucu improved growth performance and influenced intestinal villi height and activity of important digestive enzymes, favoring nutrient digestion and absorption.

scholarly journals Pengaruh kepadatan kandang dan pembatasan ransum terhadap performans produksi dan tingkat cekaman pada Ayam Broiler

Cassowary ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 193-208
Author(s):  
Paskalis Robinson ◽  
Muh. Affan Mu’in ◽  
Irba Unggul Warsono
Keyword(s):  
Broiler Chickens ◽  
Abdominal Fat ◽  
Experimental Unit ◽  
Average Weight ◽  
Feed Conversion ◽  
Feed Cost ◽  
Randomized Design ◽  
Commercial Feed ◽  
Density Factor ◽  
Chicken Farm

This study aims to determine the interaction between cage density with dietary restrictions on ration consumption, growth, feed conversion, carcass percentage, abdominal fat, heterophile-lymphocyte ratio and broiler chicken's Income Over Feed Cost. The research lasted for 2 months in the Cage of  Broiler Chicken Farm SMK Negeri I Nabire. The research material used was 135 DOC unsex Cobb strain (CP 707) with an average weight of 42.5 grams / head; commercial feed starter BR1 CP 511 B and finisher BR2 CP 512 B and 27 units of battery cages. The experimental design used was a completely randomized design factorial pattern (3 x 3). Factor I is enclosure density with 3 levels, namely K1 (3 animals / 0.5 m2), K2 (5 animals / 0.5 m2) and K3 (7 animals / 0.5 m2) and Factor II is restriction on ration with 3 levels namely R1 (100% according to ad libitum requirements), R2 (85%) and R3 (70%) given at 4-5 weeks of age. Each treatment combination was repeated 3 times to obtain 27 experimental unit units. The results showed there was no interaction between cage density factors with dietary limitation factors for all observational variables. But the cage density factor, significantly (P <0.05) shows that the denser the cage the lower the consumption of rations and the percentage of abdominal fat in broilers. Whereas the restriction factor of the ration, significantly (P <0.05) indicates that the higher the percentage of restriction ration the lower the ration consumed and the higher Income Over Feed Cost (the greater the business income of broiler chickens obtained) despite the indication of stress in broilers with a high average heterophyll-lymphocyte (H / L) ratio of  2.44.

scholarly journals Available phosphorus levels in diets for swine from 15 to 30 kg genetically selected for meat deposition

2009 ◽  
Vol 38 (2) ◽  
pp. 307-313 ◽  
Author(s):  
Alysson Saraiva ◽  
Juarez Lopes Donzele ◽  
Rita Flávia Miranda de Oliveira ◽  
Márvio Lobão Teixeira de Abreu ◽  
Francisco Carlos de Oliveira Silva ◽  
...  
Keyword(s):  
Weight Gain ◽  
Basal Diet ◽  
Linear Increase ◽  
Maximum Response ◽  
Daily Weight Gain ◽  
Experimental Unit ◽  
Available Phosphorus ◽  
Feed Conversion ◽  
Daily Intakes ◽  
Phosphorus Levels

With the objective to evaluate available phosphorus levels in diets for swine genetically selected for meat deposition, sixty commercial hybrid pigs were used, being 30 castrate males and 30 females, with initial weight of 15.00 ± 0.41 kg, distributed in a completely randomized experimental design, with six treatments, five replications and two animals (1 male and 1 female) per experimental unit. The treatments were composed of a basal diet and other five diets obtained through basal diet supplementation with dicalcium phosphate to obtain six AP levels (0.114; 0.221; 0.328; 0.435; 0.542 and 0.649%). The available phosphorus levels promoted a linear increase in the daily feed intake. Daily weight gain and feed conversion showed a quadratic behavior according to AP levels, with the maximum response at 0.509 and 0.477% of AP in the diet, respectively. Bone strength and bone calcium and phosphorus contents also presented a quadratic behavior according to AP levels, with maximum response at 0.529; 0.619 and 0.596% of AP levels in the diet, respectively. There was no effect of the AP levels in the diets on the bone ash content. The best weight gain and feed conversion observe for castrated male and female pigs from 15 to 30 kg, genetically selected for meat deposition, is provided by 0.509 and 0.477% of available phosphorus levels, respectively, corresponding to daily intakes of 6.39 and 5.93 grams of available phosphorus.

scholarly journals Prebiotic and antimicrobials on performance, carcass characteristics, and antibody production in broilers

2016 ◽  
Vol 46 (6) ◽  
pp. 1070-1075 ◽  
Author(s):  
Maíra Fomentini ◽  
Douglas Haese ◽  
João Luís Kill ◽  
Rodrigo Pereira Sobreiro ◽  
Débora Del Puppo ◽  
...  
Keyword(s):  
Antibody Production ◽  
Corn Starch ◽  
Carcass Characteristics ◽  
Basal Diet ◽  
Experimental Period ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Randomized Design ◽  
Mannan Oligosaccharides

ABSTRACT: To evaluate the effect of supplementation with mannan oligosaccharides, avilamycin and halquinol, alone or in combination, on the performance, carcass characteristics and antibody production in broilers (1-49 days old), male broiler chicks (n=1440; Cobb 500; one day old) were housed and distributed into a completely randomized design into six treatments (eight replicates; 30 animals per pen). To produce the experimental diets, three types of performance enhancer additives were used. Halquinol (HAL), avilamycin (AVI) and mannan oligosaccharides (MOS) were included (alone or in combination) in the basal diet (instead of corn starch). Effects of diet were observed on results of animal performance in the period 1-21 and 1-42 days old. Broilers fed with a diet without growth promoter showed lower weight gain in relation to those fed with diets with antimicrobials, MOS or a combination of them. In the period 1-49 days old, feed conversion increased in broilers fed with rations without promoter. At the end of the experimental period no influence of diets was observed on the carcass yield and cuts, and titles of specific antibodies to avian infectious bronchitis. The use of MOS and/or antimicrobials (AVI or HAL), alone or in combination, improves feed conversion of broilers reared until 49 days of age.

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