Mostafa S. A. Khattab

Mostafa S. A. Khattab
National Research Center, Egypt | NRC · Dairy Department

Professor
PI of project "formulating nutritional strategies for improving animal productive and environmental performance"

About

63
Publications
12,836
Reads
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412
Citations
Introduction
Mostafa S. A. Khattab current position at Obihiro university of agriculture and veterinary medicine, Hokkaido, Japan. Mostafa Research interests are Animal Nutrition and Animal Science. The current project is 'rumen manipulation'
Additional affiliations
March 2020 - present
Obihiro University of Agriculture and Veterinary Medicine
Position
  • PostDoc Position
July 2017 - present
National Research Center, Egypt
Position
  • Professor (Associate)
April 2012 - June 2017
National Research Center, Egypt
Position
  • Researcher
Education
September 2009 - March 2012
Ain Shams University
Field of study
  • Animal Nutrition
September 2004 - March 2008
Ain Shams University
Field of study
  • Animal Nutrition
September 1998 - June 2002
Cairo University
Field of study
  • Animal Production

Publications

Publications (63)
Article
Full-text available
Studies have shown that supplementing ruminant diets with vegetable oils modulated the rumen biohydrogenation and increased polyunsaturated fatty acid in their products. These positive values are often accompanied by a marginal loss of supplemented unsaturated fatty acids and rise in the concentrations of saturated fatty acids. This study were carr...
Article
Full-text available
Intensification of livestock production system using high-grain diets become necessary so that, using feed additives and promoters are very important to enhance feed digestion and efficiency to achieve the desired performance and production from the animals. The supplementation of yeast benefits in ruminants could be achieved by several factors suc...
Article
Full-text available
The experiment was conducted to study the effects of supplementing a cellulase enzymes cocktail to lactating buffaloes’ diet, on the nutrient intake, nutrient digestibility, and milk production performance and composition. Twenty-four lactating Egyptian buffaloes were assigned into one of the following treatments: CON—control consisted of a total m...
Article
Full-text available
Abstract: The experiment was conducted to study the effects of supplementing a cellulase enzymes cocktail to lactating buffaloes’ diet, on the nutrient intake, nutrient digestibility, and milk production performance and composition. Twenty-four lactating Egyptian buffaloes were assigned into one of the following treatments: CON—control consisted of...
Article
Full-text available
The current study was carried out to investigate the effect of green tea as feed additive in diets on gas production and DM degradation using batch culture technique. Three experimental diets were used as follow: Control diet, GT1; control diet supplemented with 2% green tea, GT2; control diet supplemented with 4% green tea, and GT3; control diet...
Article
The effects of including thyme, celery or their mixture (as an alternative to salinomycin ionophore) on nutrient utilization and animal performance were evaluated using Barki lambs. Fifty-five lambs weighing 18.5 ± 1.1 kg and about 90 ± 5 days old were stratified into 5 treatment groups and fed: (1) a control diet of concentrates and maize fodder (...
Article
Full-text available
Enhancing the productive performance of ruminant by improving nutrients metabolism get much attention. The aim of the current study was to investigate the effect of feeding olive cake either treated or untreated with fibrolytic enzymes on the reproductive performance and some blood parameters in ewes. Forty-eight multiparous lactating Barki ewes at...
Article
Zygote cambridge.org/zyg Research Article Cite this article: El-Zaher HM et al. (2021) Ovarian activity and antioxidant indices during estrous cycle of Barki ewes under effect of thyme, celery and salinomycin as feed additives. Zygote. 29: 155-160. Summary This research aimed to examine the effects of thyme, celery and salinomycin on ovarian sex ho...
Article
Full-text available
The current study evaluated the effects of in-feed administration of thyme, celery or their mixture (as an alternative to salinomycin ionophore) on feed utilization and growth performance of Barki lambs. Fifty-five lambs weighing 18.5 ± 1.1 kg and about 90 ± 5 days old were stratified into 5 treatment groups and fed: (1) a control diet of concentra...
Article
Thirty multiparous lactating Friesian cows were used to study the effect of partial or complete replacement of corn silage with lactic acid bacteria (LAB), molasses and calcium car-bonate ensiled sugar beet tops for 3 months in a complete randomized experimental design with repeated measures. A week after parturition, cows were grouped into three t...
Article
The current study examined the effect of in-feed administration of thyme and celery on lactational performance of Barki ewes. Thirty ewes (38 ± 2.6 kg) were stratified into 3 treatment groups and fed: (1) a basal total mixed control diet of concentrates and fodder maize (Zea mays L.) at 60:40 dry matter basis, (2) the control diet supplemented with...
Article
The current In vitro study was carried out to investigate the effect of replacing green maize (darawa) with crude olive cake or treated silage with or without fibrolytic enzymes; on nutrients digestibility, rumen fermentation, pH, ammonia nitrogen and gas production. Nine TMR with different replacement ratios were formulated and tested In vitro as...
Article
Inclusion of tannase enzyme, in tannin rich diets of lactating animals can be explored as a strategy to overcome the negative effects of tannins on feed utilization and lactational performance. The present study aimed to compare the effect of replacing commercially available exogenous tannase with a newly developed tannase, produced from Aspergillu...
Article
The study investigated the effect of in-feed administration of dried thyme leaf and celery seed mixture (at 1 : 1 DM basis) compared with salinomycin ionophore on milk production and milk nutritive value of Barki ewes. Thirty ewes (37.5 ± 1.8 kg), divided into 3 treatment groups, were fed: (1) a complete control diet comprising concentrates and fod...
Article
Full-text available
Reducing livestock negative environmental impacts get great interest in last years. So, present study was carried out to determine the effect of adding different levels of mixture of thyme and celery versus salinomycin on ruminal fermentation, gas production, dry, organic matter and fiber degradation. Four experimental treatments were used by in-vi...
Article
Full-text available
Efforts directed toward enhancing animals’ productivity are focused on evaluating the effects of non-traditional feed additives that are safer than antibiotics, which have been banned because of their health hazards. Many studies used an amino acid that contributes to heme biosynthesis, known as 5-aminolevulinic acid (5-ALA), to promote the product...
Article
Full-text available
Improving ruminant environmental impacts and productivity get a great interest in last years, herbal plants were investigated as feed additive for decreasing gas production from rumen and enhancing nutrients digestibility. So, in the current study was carried out to investigate the effect of supplementing ruminant diets with different levels of thy...
Preprint
Full-text available
Improving ruminant environmental impacts and productivity get a great interest in last years, herbal plants were investigated as feed additive for decreasing gas production from rumen and enhancing nutrients digestibility. So, in the current study was carried out to investigate the effect of supplementing ruminant diets with different levels of thy...
Article
Full-text available
Background and Objective: Cellulases enzymes are widely be interested due to its capability to degrade lignocellulosic materials. The current study was concerning on investigating different factors of cellulase production from fungal sources by using agricultural wastes and studying its impacts on ruminal digestion and fermentation. Materials and M...
Article
Full-text available
Background and Objectives: Enhancing poor quality roughages by biological treatments has interested for many researches in last years. So, in the current study was carried out to production of tannase enzyme by Aspergillus terreus and its impact on ruminal fermentation, degradability and gas production were evaluated through in vitro trials. Materi...
Article
Full-text available
Climate changes get a big interest in recent years due to the environmental deterioration and crisis. One of the most interested causes of global warming is the production of Green House Gases (GHG) of which methane (CH4) especially produced from livestock which has a high warming potential. Methane emissions from ruminants contribute about 30 to 4...
Article
Full-text available
Background and Objective: Utilization of date seeds (processed date by product) as a feedstuff in diets of farm animals are being in spotlight, this study were carried out to investigate the effect of feeding diets contain cracked date seed with or without fibrolytic enzyme, versus control diet using Egyptian buffaloes. Materials and Methods: Fifte...
Article
Full-text available
Background and Objectives: The growth of the ethanol industry has increased the need for alternatives to corn in lactating cow diets. Glycerol has the potential to replace corn in the diet. Due to high potential fermentation of glycerol in the rumen, the study aimed to investigate the efficiency of encapsulation and nano-dispersed techniques to pro...
Book
The high global demand for energy led to an increasing production and trade of bio-fuel, especially liquid fuels for transportation, in order to substitute fossil energy sources, to enhance energy security and to respond to greenhouse gas emissions. The increase in bio-ethanol industry has created a need for alternative to corn for ruminants. In th...
Preprint
Palm kernel cake is a feed by-product that is used by the livestock industries. Chemical composition of palm kernel cake varies depending on the type of the fruits palm, source of sample and method of processing oil extraction (screw pressing or solvent extraction). This review was carried out to examine the effect of palm kernel cake on digestibil...
Article
Full-text available
Palm kernel cake is a feed by-product that is used by the livestock industries. Chemical composition of palm kernel cake varies depending on the type of the fruits palm, source of sample and method of processing oil extraction (screw pressing or solvent extraction). This review was carried out to examine the effect of palm kernel cake on digestibil...
Research
Full-text available
This study was carried out to evaluate using palm fronds only or supplemented with fibrolytic enzymes as alternative roughage on the ruminal nutrients digestibility and gas production. Treatments were: clover hay (Trifolium alexandrinum), The results showed a reduction (p < 0.05) in gas production, NH3-N, DM and OM digestibility in palm fronds comp...
Book
Climate changes get a big interest in recent years due to the environmental deterioration and crisis. One of the most interested causes of global warming is the production of Green House Gases (GHG) of which methane (CH4) especially produced from livestock which has a high warming potential. Methane emissions from ruminants contribute about 30 to 4...
Article
Full-text available
This study was carried out to evaluate using palm fronds only or supplemented with fibrolytic enzymes as alternative roughage on the ruminal nutrients digestibility and gas production. Treatments were: clover hay (Trifolium alexandrinum), palm fronds only and palm fronds plus fibrolytic enzymes (enzymes were mixed with palm fronds in rate of 4 g kg...
Article
Full-text available
n vitro study was carried out to determine the effect of replacing clover hay with olive cake silage with or without fibrolytic enzymes on rumen fermentation and gas production and dry matter disappearance. The experimental diets consist of 50: 50 concentrate: roughage ratio (on DM basis); the experiments divided into four groups, the first group d...
Article
Full-text available
Tannin compounds are widely distributed in many species of plants commonly consumed by ruminants, where these compounds play a role in protection from predation and perhaps as pesticides and in plant growth. Tannins are divided into two major groups and condensed hydrolysable tannins. One of problems of feeding agro-industries and agricultural by-p...
Book
Effect of vegetable and fruit market wastes silage on silage quality; in-vitro dry matter disappearance and productive performance of lactating goats were studied. Eleven types of silages were made from vegetable and fruit market wastes (VFMW). All different forms of silage treated with either formic, propionic, acetic acids or lactic acid bacteria...
Article
Full-text available
Several techniques were developed to estimate quantity of methane emissions, but these techniques are not practical at the farm conditions, so, attention were turned toward possible approaches to formulate a high accurate prediction model. Different studies were illustrated that amount digested feeds in the rumen, concentrate and roughage contents...
Article
Full-text available
Background: The current study was carried out to investigate addition of lemongrass or galangal to diet and its effect of productive performance of lactating Barki goats. Materials and Methods: Thirty lactating Barki goats were divided into three groups (10 animals per each treatment), first group was fed control diet without additives, consist of...
Article
Thirty multiparous lactating Friesian cows (523 ± 8.9 kg BW) were used to study the effect of feeding coriander oil, a natural feed additive, versus salinomycin; an ionophore. Early lactation Friesian cows were used for 63 days in a completely randomized experimental design with repeated measures. Cows were randomly assigned to three treatments and...
Article
Full-text available
Background: Synchronization the rate of which dry matter and crude protein degraded at the rumen significantly affects the synthesis of microbial protein and thus the efficiency of feed utilization. During previous study a new software application “Lacto-sheep” had been developed to facilitate the formulation of the least cost ration considered thi...
Article
Full-text available
Objective: This study was carried out to investigate inoculating sugar beet leaves silage with lactic acid bacteria to reduce negative effect of its content of oxalates. Materials and Methods: Fifteen lactating Frisian cows weighed 500 ±30 kg were randomly assigned into three groups (5 cows) using complete random design. The experimental diets were...
Article
Full-text available
􀀣􀁂􀁄􀁌􀁈􀁓􀁐􀁖􀁏􀁅􀀛􀀁􀀴􀁚􀁏􀁄􀁉􀁓􀁐􀁏􀁊􀁛􀁂􀁕􀁊􀁐􀁏􀀁􀁕􀁉􀁆􀀁􀁓􀁂􀁕􀁆􀀁􀁐􀁇􀀁􀁘􀁉􀁊􀁄􀁉􀀁􀁅􀁓􀁚􀀁􀁎􀁂􀁕􀁕􀁆􀁓􀀁􀁂􀁏􀁅􀀁􀁄􀁓􀁖􀁅􀁆􀀁􀁑􀁓􀁐􀁕􀁆􀁊􀁏􀀁􀁅􀁆􀁈􀁓􀁂􀁅􀁆􀁅􀀁􀁂􀁕􀀁􀁕􀁉􀁆􀀁􀁓􀁖􀁎􀁆􀁏􀀁􀁔􀁊􀁈􀁏􀁊􀁇􀁊􀁄􀁂􀁏􀁕􀁍􀁚􀀁􀁂􀁇􀁇􀁆􀁄􀁕􀁔􀀁􀁕􀁉􀁆􀀁􀁔􀁚􀁏􀁕􀁉􀁆􀁔􀁊􀁔 􀁐􀁇􀀁􀁎􀁊􀁄􀁓􀁐􀁃􀁊􀁂􀁍􀀁􀁑􀁓􀁐􀁕􀁆􀁊􀁏􀀁􀁂􀁏􀁅􀀁􀁕􀁉􀁖􀁔􀀁􀁕􀁉􀁆􀀁􀁆􀁇􀁇􀁊􀁄􀁊􀁆􀁏􀁄􀁚􀀁􀁐􀁇􀀁􀁇􀁆􀁆􀁅􀀁􀁖􀁕􀁊􀁍􀁊􀁛􀁂􀁕􀁊􀁐􀁏􀀏􀀁􀀥􀁖􀁓􀁊􀁏􀁈􀀁􀁑􀁓􀁆􀁗􀁊􀁐􀁖􀁔􀀁􀁔􀁕􀁖􀁅􀁚􀀁􀁂􀀁􀁏􀁆􀁘􀀁􀁔􀁐􀁇􀁕􀁘􀁂􀁓􀁆􀀁􀁂􀁑􀁑􀁍􀁊􀁄􀁂􀁕􀁊􀁐􀁏􀀁􀁬􀀭􀁂􀁄􀁕􀁐􀀎􀁔􀁉􀁆􀁆􀁑􀁺􀀁􀁉􀁂􀁅􀀁􀁃􀁆􀁆􀁏 􀁅􀁆􀁗􀁆􀁍􀁐􀁑􀁆􀁅􀀁􀁕􀁐􀀁􀁇􀁂􀁄􀁊􀁍􀁊􀁕􀁂􀁕􀁆􀀁􀁕􀁉􀁆􀀁􀁇􀁐􀁓􀁎􀁖􀁍􀁂􀁕􀁊􀁐􀁏􀀁􀁐􀁇􀀁􀁕􀁉􀁆􀀁􀁍􀁆􀁂􀁔􀁕􀀁􀁄􀁐􀁔􀁕􀀁􀀁􀁓􀁂􀁕􀁊􀁐􀁏􀀁􀀁􀁄􀁐􀁏􀁔􀁊􀁅􀁆􀁓􀁆􀁅􀀁􀀁...
Article
Background and Objective: Anaerobic bacteriadiversity in the rumen could be one of the keys of enhancing ruminant performance and productivity. The anaerobic population by its great diversity could be possible solution for some nutritional properties and enhance animal resistance to pathogenic microbes. Antimicrobial resistance for antibiotics used...
Article
Full-text available
This study was carried out to investigate addition of lemongrass or galangal to diet and its effect on the ruminal nutrients digestibility and gas production. Treatments were: control diet consist of 50: 50 Concentrate : roughage; Lemongrass : control diet plus 4.5 g powdered lemongrass/Kg DM which equal 100 mg essential oil/ kg DM; galangal: contr...
Article
Full-text available
Objective: This study was carried out to investigate the effect of supplementing diets containing date palm fronds with cellulase and tannase enzymes. Materials and Methods: Fifteen lactating buffaloes were randomly assigned into three groups (five animals each) using complete random design and the experimental diets were T1 group fed 50% (CFM), 30...
Conference Paper
Full-text available
Least-cost procedures do not always produce the most practical rations for ruminants. The aim of this work was to reduce the cost of feeding by achieving the highest efficiency of utilization from the diet at the lowest possible cost through incorporating the concept of synchronizing ruminal energy and protein digestion into the traditional least-c...
Article
Full-text available
Least-cost procedures do not always produce the most practical rations for ruminants. The aim of this work was to incorporate the concept of synchronizing ruminal energy and protein digestion in the traditional leastcost procedure, in order to produce more appropriate and practical rations for lactating Barki ewes. The degree of dietary nutrient sy...
Article
Full-text available
The increase in bio-ethanol industry has created a need for alternative to corn for ruminants. In the other side there is an increase availability and promote favorable pricing for glycerol, a primary co-product material. Glycerol is used as energy additive in ruminant nutrition. Glycerol in particular, is used for their glycogenic and anti-ketogen...
Article
Full-text available
Anaerobic probiotics could be possible solution for antimicrobial resistance for antibiotics used in animal production. The main effects of probiotics are the improved resistance to pathogenic bacteria colonization and enhanced host mucosa immunity; thus resulting in a reduced pathogen load, an improved health status of the animals and a reduced...
Article
Full-text available
Abstract: Background: This study was carried out to evaluate the effect of supplementing ruminant ration with propionibacterium P169 by using 3X3 Latin square Rahmani rams on feed intake, nutrients digestibility, rumen fermentation, blood plasma metabolites. Methods: Rams were divided into three groups with three successive experimental periods. Ea...
Article
Full-text available
This study was carried out to evaluate the effect of supplementing ruminant ration with propionibacterium P169 by using 3X3 Latin square Rahmani rams on feed intake, nutrients digestibility, rumen fermentation, blood plasma metabolites. Rams were divided into three groups with three successive experimental periods. Each period consisted of 21 days....
Article
Full-text available
The increase in bio-ethanol industry has created a need for alternative to corn for ruminants. In the other side there is increase in availability of glycerol, a primary co-product material of biodiesel production. The objective of this study was to investigate the effect of partial replacing of corn with glycerol in diets fed to lactating goats. T...
Article
Full-text available
There is an increase interesting in enrichment of milk with Conjugated Linoleic Acid (CLA) due to its anti-oxidative and anti-carcinogenic properties. The objective of this study was to investigate the effect of supplementing diets fed to lactating goats with sunflower, fish oil and its blend. Eight lactating Nubian goats were fed a base diet (T1),...
Thesis
Full-text available
The increase in bio-ethanol industry has created a need for alternative to corn for ruminants. In the other side there is an increase availability and promote favorable pricing for glycerol, a primary co-product material. The objective of this study was to investigate the effect of partial replacing of corn by glycerol in diets fed to lactating goa...
Article
Full-text available
The increase in bio-ethanol industry has created a need for alternative to corn for ruminants. In the other side there is increase in availability of glycerol, a primary co-product material of biodiesel production. The objective of this study was to investigate the effect of partial replacing of corn with glycerol in diets fed to lactating goats. T...
Article
Full-text available
The effects of substituting corn with glycerol as a feed alternative were investigated using continuous fermenters. Four fermenters were used in a 4×4 Latin square design with four 10 days consecutive periods. Treatments diets contained 0 (T1), 36 (T2), 72 (T3) and 108 (T4)g glycerol/kg dry matter (DM). Diets consisted of 600g/kg alfalfa hay and 40...
Thesis
Effect of vegetable and fruits market wastes silage on silage quality; in-vitro dry matter disappearance and productive performance of lactating goats were studied. Eleven types of silages were made from vegetable and fruit market wastes (VFMW). All different forms of silage treated with either formic, propionic, acetic acids or lactic acid bacteri...

Questions

Questions (6)
Question
in in-vitro gas production trials, when we add cellulase enzynes we found that gas production decreased
why that? especially that there is a positive correlation between fiber content in the diet and digestion and gas produced
Question
need more details about delta 6 desaturese enzymen 
responsible of isomertization of strearic acid to CLA
Question
in some models of methane prediction from rumen
volatile fatty acids from amino acids fermentation were carried out
so i need to know how could that volatile acids quantity calculated.

Projects

Projects (6)
Project
Call for papers to our article collection, “Gastrointestinal Nutrients-Microbiome-Host Interactions in Livestock” Manuscript submission is now open for a new article collection I am co-editing on “Gastrointestinal Nutrients-Microbiome-Host Interactions in Livestock”. On behalf of the editorial team, we would like to include a paper from you in this collection - if you would like to contribute, you can register your interest in the link below my signature. The aim of the collection is to bring together the latest quality articles from researchers working in the area of livestock gastrointestinal microbiota, focused on tackling the following questions:  When does the assembly of livestock gut microbiota begin?  What are the sources of microbes in “inoculating” the original animal gastrointestinal microbiome (environment, maternal contribution, farm employee, etc.)?  What is a typical trajectory of gut microbiome assembly in livestock during early life? What microbes can and cannot stabilize in the gut?  What role does maternal milk play in regulating gut microbiota succession?  How does solid food (i.e., starter) affect the gut microbiome maturation?  What is the role of secretory IgA in the assembly of gastrointestinal microbiota?  Is it possible to predict the host response to any type of dietary intervention using mathematical modeling and machine learning based on the livestock gut microbiome? All research will be published Open Access. We additionally aim to put together a free eBook of all published manuscripts to provide an up-to-date and comprehensive overview of the latest research developments in the field. This is in collaboration with Frontiers in Microbiology (IF: 5.640, Citescore: 7.3). You can learn more about the collection here: https://www.frontiersin.org/research-topics/40842/gastrointestinal-nutrients-microbiome-host-interactions-in-livestock The deadline for manuscript submissions is 22 nd January 2023, but we can accommodate extensions on a case-by-case basis. Please note that publishing fees are applied to accepted articles, but the team at Frontiers is happy to advise you in this regard. You can reach out to our dedicated point of contact at Frontiers, Rebecca Carver, at microbiology.submissions@frontiersin.org if you have any questions. You will also shortly receive a follow-up email with further details from Frontiers. If you do not wish to participate but know someone who might be interested, please feel free to forward this on to them. On behalf of the editorial team: Prof. Dr. Mostafa Khattab
Project
The main scientific concept of the project is improving the productivity of ruminant animals (meat and milk), quality of its products and reduce methane emission and reproductive performance of ruminants using anaerobic probiotics and essential oils as feed additives.