Impact of humic acid as an organic additive on ruminal fermentation constituents, blood parameters and milk production in goats and their kids growth rate

El-Zaiat, Hani M.; Morsy, A.S.; Elwakeel, E.A.; Anwer, Megha; Sallam, S. M. A.

doi:10.22358/jafs/92074/2018

Cited by 35 publications

(35 citation statements)

References 21 publications

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“…In addition, rate of absorption of short chain fatty acids could contributes to the stabilization of ruminal pH [27]. This result of pH in this study is consistent with that of El-Zaiat et al [28] for Baki goats fed humic acids. On a contrary, humic/fulvic acid did not affect pH in finishing steers, rams and heifers [10,11,14].…”

Section: Discussionsupporting

confidence: 92%

“…The differences between this current study and that of others could be adjured to specie difference and management practices adopted. The linear decrease in concentration of ammonia nitrogen in the rumen is consistent with reports of El-Zaiat et al [28] in goats, McMurphy et al [10] in steers. The strong nitrogen-binding activities of humic acids are reported to be responsible for the reduction in ammonia [10].…”

Section: Discussionsupporting

confidence: 91%

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Rumen Metabolites and Microbiome of Semi-intensively Managed West African Dwarf Goats Supplemented Concentrate Diet of Varying Levels of Sodium Humate

et al. 2020

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Egyptian Journal of Veterinary Scienceshttps://ejvs.journals.ekb.eg/ 29 P OOR quality forages such as mature grass could be improved by physical, chemical and biological treatment. One of such procedure is supplementing with feed that will modify the rumen environment to improve forage utilization. A 90-day study was conducted to examine the rumen ecology of semi-intensively raised West African Dwarf (WAD) goats fed supplemented concentrate diet containing incremental levels of sodium humate. The thirty (30) WAD bucks (age 10-15 months) used in this study were randomly assigned to five dietary treatments containing 0, 5, 7.5, 10 and 12.5 g/kg diet of sodium humate in a completely randomized design. Data were obtained on rumen pH, ammonia nitrogen, total volatile fatty acids (VFA) and some of their various proportions (Acetate, propionate and butyrate), protozoa, fungi and bacteria counts and were statistically analysed using the GLM procedure of SPSS (version 23). Results revealed that pH, NH3-N, and fungi count were affected (p<0.05) by the inclusion of sodium humate in the diets. However, volatile fatty acids and the various proportions, protozoa and bacteria counts were not affected (p>0.05) by the inclusion of sodium humate in the diets. It was concluded that sodium humate could be used in the diet of semi-intensively managed WAD goats to stabilize the rumen pH and that levels up to 10 g/kg diet could be utilized to improve fungi count.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 91%

Rumen Metabolites and Microbiome of Semi-intensively Managed West African Dwarf Goats Supplemented Concentrate Diet of Varying Levels of Sodium Humate

et al. 2020

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“…Humic substances may alter microbiota in the intestinal digesta (17, 18). Some recent studies on ruminants do in fact show that humic acid could be used to modulate the ruminal fermentation pattern by shifting ruminal fermentability to more efficient end products (17).…”

Section: Introductionmentioning

confidence: 99%

Performance, Fermentation Characteristics and Composition of the Microbiome in the Digest of Piglets Kept on a Feed With Humic Acid-Rich Peat

et al. 2019

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The transition from breast milk to solid feed is a dramatic change in the nutrition of piglets, frequently necessitating antibiotic treatment. In efforts to reduce the use of antibiotics, dietetic concepts based on natural feed additives are becoming more and more important. In the present study, experiments were carried out with 15 rearing piglets (days 28–56) divided into three groups that were offered different diets (Ctr [0% peat]; H1.5 [1.5% peat]; and H3.0 [3.0% peat] based on a commercial weaner recipe; all ~178 g CP, 13.7 MJ ME, 13.3 g Lys, as-fed). The contents of cecal and colon digesta were removed at necropsy. The gas formation (4 h) in colon digesta was measured using in vitro batch fermenters. For microbiome studies, 16S rRNA amplification was performed within the hypervariable region V 4 and sequenced with Illumina MiSeq platform. DNA read mapping and statistical analysis were performed using QIIME (version 1.8.0), MicrobiomeAnalyst, RStudio, and SAS Enterprise Guide. The mean body weight of the animals at the end of the trial did not show statistical differences (in kg: Ctr: 26.1 ± 4.85, H1.5: 28.5 ± 3.41, H3.0: 26.2 ± 4.92). The daily weight gains were high for this age (in g/day; Ctr: 607 ± 157; H1.5: 692 ± 101; H3.0: 615 ± 113) and the feed to gain ratio low (in kg/kg; Ctr: 1.538; H1.5: 1.462; H3.0: 1.462). Concentrations of short-chain fatty acids in the cecal content were significantly lower when peat was used (mmol/kg wet weight; Ctr: 173 ± 30.0; H1.5:134 ± 15.0; H3.0:133 ± 17.3). Numerical differences were found in the gas formation (in mL gas per 10 mL batch in 4 h; Ctr: 7.9 ± 2.2; H1.5: 7.4 ± 2.4; H3.0: 6.6 ± 1.1). The microbiome analyses in the cecal content showed significantly higher values for alpha diversity Chao 1 index for samples from the control group. Significant differences were found for bacterial relative abundance for Tenericutes at phylum level and Mollicutes at class level ( p < 0.05) in cecal microbiota. Therefore, there was initial evidence that peat influences intestinal microflora causing a shift in the overall concentration of fermentation products in both, the cecal and the colon content.

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“…у рубці. Ці симбіонти жуйних активно гідролізують крохмаль, що вірогідно пояснює зміни хімічного складу рубцевої рідини за впливу гумінових кислот (Galip et al, 2010, El-Zaiat et al, 2018.…”

Section: вступunclassified

Determination of the level of safety of Humilid during biotesting at ciliates

Stepchenko¹,

Kryvaya²,

Chumak³

2019

TAVM

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The «Humilide»-Biologically Active Feed Supplement is a 10 % solution of humic acids that, by its antioxidant, immunostimulatory and antimicrobial properties, affects feed conversion, productivity and meat quality of farm animals. It is made according to TU In 15.7-00493675 004: 2009 in the conditions of the Research Laboratory of Humic Substances named of prof. L. A. Khristeva. Most of the work on the effects of the supplement has been done on poultry of different species and pigs. The available data on the safety of the feed additive «Humilide» were analyzed and biotested on Paramecium caudatum in accordance with the requirements of the current legislation in the field of control of veterinary preparations and feed additives. A series of Humilide dilutions of 0.1-100 g/l on the culture medium at ciliates were prepared for toxicological studies. Acute toxicity data of the tested concentrations were obtained according to the recommended methods of rapid bioassay. LC 50 values were determined by probit analysis of lethality curves. In solutions of «Humilide» 1.0 and 10 g/l within 1 hour of observation, the death of the protozoa was less than 10 % of the total number. A concentration of 100 g/l causes a decrease their quantity. According to the calculation of the toxicity of «Humilide» by the method of Bliss & Prozorovsky LC 50 for Paramecium caudatum is 104 g / l. Using the graphical method for calculating LC 50 from the obtained regression line, the result was 124 g/l. Thus, «Humilide» at a concentration of less than 1 % is non-toxic to protozoa, NOEC (No Observed Effect Concentration) is 2 g/l and EC 50 (Half maximal effective concentration) is 104-124 g/l. Therefore, the results on the activity of «Humilide» in relation to the Paramecium caudatum allow to classify it as a non-toxic substance, LC 50-over 5 000 mg/kg. It is IV class acute toxicity according to SP 8.8.1.2.002-98 (Ukraine) and international criteria-5 toxicity category. When converted to the content of humic acids in the composition of the sample, this corresponds to 10.4-12.4 g/l.

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Impact of humic acid as an organic additive on ruminal fermentation constituents, blood parameters and milk production in goats and their kids growth rate

Cited by 35 publications

References 21 publications

Rumen Metabolites and Microbiome of Semi-intensively Managed West African Dwarf Goats Supplemented Concentrate Diet of Varying Levels of Sodium Humate

Rumen Metabolites and Microbiome of Semi-intensively Managed West African Dwarf Goats Supplemented Concentrate Diet of Varying Levels of Sodium Humate

Performance, Fermentation Characteristics and Composition of the Microbiome in the Digest of Piglets Kept on a Feed With Humic Acid-Rich Peat

Determination of the level of safety of Humilid during biotesting at ciliates

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