Amlan Kumar Patra

Amlan Kumar Patra
West Bengal University of Animal and Fishery Sciences | WBUASFSCI · Department of Animal Nutrition

PhD

About

201
Publications
66,661
Reads
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7,149
Citations
Introduction
Ruminant and poultry nutrition, rumen microbiology and biotechnology, gastrointestinal physiology, livestock-environmental interaction, and nutritional modelling and metaanalysis.
Additional affiliations
April 2017 - September 2018
Freie Universität Berlin
Position
  • Fellow
October 2010 - March 2012
The Ohio State University
Position
  • Visiting Assistant Professor
September 2007 - present
West Bengal University of Animal and Fishery Sciences
Position
  • Professor (Assistant)
Education
September 2001 - September 2004
Indian Veterinary Research Institute
Field of study
  • Animal Nutrition

Publications

Publications (201)
Article
Full-text available
The objectives of this study were to investigate the effect of a maximum recommended oil supplementation on growth performance, eating behavior, ruminal fermentation, and ruminal morphological characteristics in growing lambs during transition from a low- to a high-grain diet. A total of 21 Afshari male lambs with an initial body weight (BW) of 41....
Article
Full-text available
This study was conducted to evaluate the effect of a composite plant extract (CPE) rich in polyphenolics and saponins from seeds of Dolichos biflorus (horse gram), root of Asparagus racemosus (shatavari), bark of Amoora rohituka (rohitaka), and peel of Punica granatum (pomegranate) on ruminal fermentation and methanogenesis in vitro, milk productio...
Article
Ghoongroo pigs have good adaptability in a low input production system with high prolificacy. The present study was conducted on pre- and post-weaned Ghoongroo piglets from 2–3 days to 12 weeks of age to evaluate the effect of a milk replacer and oregano essential oil (EO) on growth, physiological and immunological responses. Thirty six piglets wer...
Article
Full-text available
Forty-six Dorper (DOR), 46 Katahdin (KAT), and 43 St. Croix (STC) female sheep (initial body weight of 58, 59, and 46 kg, respectively, SEM = 1.75; 3.3 ± 0.18 years of age, 2.6–3.7), derived from 45 commercial farms in four regions of the USA (Midwest, Northwest, Southeast, and central Texas), were used to evaluate responses in blood constituent co...
Article
Full-text available
Moringa oleifera leaf silage and Chlorella vulgaris microalgae mixture used at different levels replacing concentrate feed mixture in the diets of ruminant were evaluated using an in vitro gas production technique. C. vulgaris was included in rations at 1, 2, and 3% concentrations. The concentrate feed mixture was replaced by M. oleifera silage up...
Article
Effect of dietary inorganic and organic chromium on nutrient utilization and growth performance in Black Abstract An experiment was conducted to investigate the effect of dietary chromium (Cr) supplementation on nutrient utilization and growth performance in Black Bengal goats. Thirty Black Bengal kids of 3-5 months (5.40±0.34 kg body weight) were...
Article
Full-text available
Twenty-four Alpine doelings, initial 25.3 ± 0.55 kg body weight (BW) and 10.4 ± 0.11 mo of age, and 24 Katahdin ewe lambs, 28.3 ± 1.02 kg BW and 9.6 ± 0.04 mo of age, were used to determine effects of dietary inclusion of Sericea lespedeza (Lespedeza cuneata) hay on feed intake, digestion, growth performance, energy metabolism, and ruminal fermenta...
Article
Full-text available
Background: The use of industrial by-products rich in bioactive compounds as animal feeds can reduce greenhouse gas production. Paulownia leaves silage (PLS) was supplemented to dairy cows' diet and evaluated in vitro (Exp. 1; Rusitec) and in vivo (Exp. 2, cannulated lactating dairy cows and Exp. 3, non-cannulated lactating dairy cows). The study...
Article
Full-text available
Paulownia is a fast-growing tree that produces a huge mass of leaves as waste that can be used as a feed source for ruminants. The previous study showed that phenolic compounds were the most active biological substances in Paulownia leaves, which affected the ruminal parameters and methane concentration. However, there are no scientific reports on...
Article
The study investigated the carry-over effects of prepartum diet fermentability, on productivity and metabolic status of cows that received two levels of starch during early lactation. For this aim, 49 multiparous (body condition score [BSC] of 3.63 ± 0.06) and 36 primiparous (3.66 ± 0.05 BCS) Holstein cows were placed in four free stall barns from...
Article
Full-text available
Exploring suitable alternatives for high-cost concentrate feeds is a critical factor for successful livestock production. The present experiment aimed to evaluate the dietary inclusion of Moringa oleifera silage and Chlorella vulgaris microalgae (at 1% of total diet, DM basis) in a quintuplicate 3 × 3 Latin square design for milk production perform...
Article
Full-text available
To understand the metabolic mechanisms regulating lipid metabolism by monensin, Afshari male lambs (n = 16) with 41.0 ± 2.4 kg body weight (BW, mean ± SD) at approximately 180 days of age were randomly assigned equally to two dietary treatments. After a 21-day pre-adaptation period, all animals in two groups continued to receive the basal diet, but...
Article
Full-text available
The aim of the current study was to evaluate the ensiling of date palm leaves (DPL) with organic acids (lactic or malic acid) for 45 day as a feed for lactating ewes under desert conditions. Two weeks before expected parturition, 50 multiparous lactating Farafra ewes (mean ± SD: 2 ± 0.3 parity, 34 ± 1.9 kg bodyweight, 25 ± 2.4 months of age, and 55...
Article
Full-text available
The present experiment evaluated the feeding of date palm leaves (DPL) ensiled with fibrolytic enzymes (ENZ) or multi-species probiotics (MSP) on nutrient utilization and lactational performance of ewes. Fifty multiparous lactating Farafra ewes were used in a completely randomized design for 90 d. The treatments consisted of the control diet with a...
Article
The present study investigated the effect of seasonal heat stress on the physiological, behavioural and blood bio-chemical profile of adult Ghoongroo pigs (1.5-2 years of age) of different physiological groups. Thirty Ghoongroo pigs (10 boars, 10 non-pregnant sows and 10 pregnant sows) were allotted to individual pens. The study continued for 1 yea...
Article
Full-text available
Bacterial peptidases play important roles in health and nutrient digestion in both humans and animals, especially ruminant animals. In this study, we examined and compared the various peptidases (both total and secretory) among species of Prevotella (44 in total) and Paraprevotella (2) revealed in their sequenced genomes that were archived in the M...
Article
Full-text available
The effects of a composite polyphenolic-rich extract (CPRE) on ruminal fermentation, nutrient utilisation, growth performance, excretion of nitrogen and phosphorus and methane emission were studied in growing buffaloes. Four herbal dry extracts prepared from Acacia arabica (babul; bark), Acacia catechu (cutch; bark), Punica granatum (pomegranate; p...
Article
Aims: The sustainable utilization of date palm leaves (DPL) and rice straw (RS) as feed materials for ruminant was evaluated using an in vitro wireless gas production technique. Methods and results: Date palm leaves and RS were individually ensiled with lactic acid bacteria (LAB) for 45 d or used as substrates for the cultivation of Pleurotus os...
Chapter
Of late, climate change is a burning issue across the globe. Climate is changing due to increase in green house gases (GHG) in the atmosphere. The entire agricultural food production chain contributes one‐third of total global emissions and livestock shares about 70% of total GHG emissions in food production system and 14.5% of total GHG emissions...
Article
Full-text available
Purpose The present experiment aimed to evaluate date palm leaves (DPL) treated without or with fibrolytic enzymes as a feed for ruminants. Methods The experiment employed an in vitro wireless gas production system to evaluate the dietary inclusion of DPL as sun-dried, DPL ensiled without or with fibrolytic enzymes for 45 days. The different forms...
Article
Full-text available
The present study aimed to evaluate the sustainable utilization of date palm leaves (DPL) and rice straw (RS) as feed materials for ruminants using an in vitro wireless gas production (GP) technique. Date palm leaves and RS were individually ensiled with lactic or malic acids at 5 g/kg DM for 45 days. In a total mixed ration containing concentrate...
Article
Full-text available
Background Methane production and fatty acids (FA) biohydrogenation in the rumen are two main constraints in ruminant production causing environmental burden and reducing food product quality. Rumen functions can be modulated by the biologically active compounds (BACs) of plant origins as shown in several studies e.g. reduction in methane emission,...
Chapter
Full-text available
The rumen is an integrated dynamic microbial ecosystem composed of enormous populations of bacteria, protozoa, fungi, archaea, and bacteriophages. These microbes ferment feed organic matter consumed by ruminants to produce beneficial products such as microbial biomass and short-chain fatty acids, which form the major metabolic fuels for ruminants....
Article
Full-text available
Abstract: This study was conducted to investigate the effect of decreasing concentrations of dietary neutral detergent fiber (NDF) at high rumen undegradable protein (RUP) on performance, digestibility, chewing activity, blood attributes, and carcass characteristics in 32 weaned male Afshari lambs (90 days of age; 26 kg initial body weight; BW). Di...
Article
Full-text available
Cadmium (Cd) has been recognized as one of the most toxic heavy metals, which is continuously discharged into environments through anthropogenic (industrial activities, fertilizer production, and waste disposal) and natural sources with anthropogenic sources contributing greater than the natural sources. Therefore, Cd concentration sometimes increa...
Article
Full-text available
This study investigated the effects of dietary phytobiotic mixture on growth performance, blood profiles, immune response, and fecal microorganisms in weaned piglets. Twenty four weaned crossbred piglets were equally divided into four groups in a completely randomized design. The animals in 4 groups were fed a basal diet added with (1) no antibioti...
Article
Full-text available
This experiment was conducted to study the effects of different concentrations of polyphenols of Paulownia Clon In Vitro 112® leaves or their particular parts on in vitro ruminal fermentation, methane production and microbial population. Paulownia leaves with high (PLH; 31.35 mg/g dry matter (DM)), medium (PLM; 26.94 mg/g DM), and low level of poly...
Article
Probiotics are live beneficial bacteria introduced into the gastrointestinal tract through food or water, promoting good health by enhancing the internal microbial balance. Probiotic microbes produce bacteriocins, siderophores, lysozymes, proteases, and hydrogen peroxides, inhibiting the growth of harmful pathogens. Such beneficial bacteria also pr...
Article
Paulownia is a genus of fast-growing trees that generate a huge mass of leaves, which can be utilized as a feed resource for ruminants. In the present study, the chemical and phytochemical composition, in vitro ruminal fermentation and methane production, and nutrient degradability of fresh Paulownia hybrid leaves (PL) and its silage (PLS) were inv...
Preprint
Full-text available
Background: This study aimed to investigate the effect of biologically active compounds (BAC) of Coleus amboinicus Lour. (CAL) herb fed to growing lambs on ruminal methane production, ruminal biohydrogenation of unsaturated fatty acids and meat characteristics. An in vitro trial (Experiment 1) comprising of control and three experimental diets (CAL...
Article
Purpose This paper explored the impact of prolonged lockdown caused by coronavirus disease (COVID)-19 pandemic on the academic aspects of veterinary students of India and its relationship with their socio-economic status. Design/methodology/approach We conducted a study with 224 first-year veterinary students engaged in e-learning system from four...
Article
The influences of a blend of plant extracts (PE; broadleaf plantain and peppermint) and monensin (MON) on metabolite status, digestibility and performance of ewes during periparturient period were investigated. Thirty-two estrus-synchronized multiparous Afshari ewes (90 ± 3.1 kg body weight (BW); 3.0 ± 0.15 body condition score (BCS); mean ± standa...
Article
Propolis is a viscous, waxy, resinous substance that is produced from the exudates of flowers and buds by the action of salivary enzymes of honey bees. Propolis may differ in color (brown, red or green), with color being influenced by the chemical composition and age of the product. Propolis has a special distinctive odor owing to the high concentr...
Article
Full-text available
: Several by-products, such as whole cull dates, date stones (also called pits, seeds, kernels), sugar-extracted date pulp, are produced from date fruit processing industries. These by-products, particularly date stone meal represent 10 to 20% of the whole dates are wasted, causing environmental issues. However, the date stone is rich in various nu...
Article
This study was conducted to investigate the effects of dietary rice brewer waste (RBW) on growth performance, nutrient utilization and nitrogen balance in growing rabbits. Thirty growing rabbits (758 ± 25.7 g initial body weight) were randomly assigned to control and four treatment groups (containing RBW) in a completely randomized design with six...
Article
Full-text available
Effects of dietary supplementation of Emblica officinalis fruit (Indian gooseberry) pomace (EFP), a waste from fruit processing plants and rich in polyphenolic compounds, were investigated for ruminal fermentation, nutrient utilization, methane production, and milk production performance in buffaloes. An in vitro experiment was conducted using 0 to...
Article
Full-text available
Sultan AM Saghir,1 Naif A AlGabri,2,3 Mahmoud M Alagawany,4 Youssef A Attia,5,6 Salem R Alyileili,7 Shaaban S Elnesr,8 Manal E Shafi,9 Omar YA Al-shargi,10 Nader Al-balagi,11 Abdullah S Alwajeeh,12 Omar SA Alsalahi,13 Amlan K Patra,14 Asmaa F Khafaga,15 Ahmed Negida,16,17 Ahmed Noreldin,18 Wesam Al-Amarat,19 Amer A Almaiman,20 Khaled A El-Tarabily,...
Article
Marine macroalgae are considered to be alternative promising animal feed resources with numerous advantages, such as high growth rate, exceptional tolerance to be potentially cultivated in marine water and non-competition of arable lands for cultivation, over conventional terrestrial resources. Beyond that, macroalgae are rich exclusive sources of...
Article
Full-text available
Livestock species experience several stresses, particularly weaning, transportation, overproduction, crowding, temperature, and diseases in their life. Heat stress (HS) is one of the most stressors, which is encountered in livestock production systems throughout the world, especially in the tropical regions and is likely to be intensified due to gl...
Chapter
Full-text available
Poultry production, health and wellbeing are highly dependent upon formulation of balanced rations in terms of energy, protein, and micronutrients (vitamins and minerals). Among all, minerals are required in fewer quantities, but they are very important to maintain the productivity in poultry. Minerals present in the feeds are less bioavailable and...
Article
Full-text available
Editorial on the Research Topic Gut Microbiome Modulation in Ruminants: Enhancing Advantages and Minimizing Drawbacks Historically, the gastrointestinal tract (GIT) was considered an organ solely equipped for the digestion and absorption of nutrients. However, the GIT harbors the largest population of immune cells and microbes that outnumber the en...
Chapter
Full-text available
The use of probiotics has gained immense interests in animal agriculture around the world due to the myriad of health and production benefits, especially in the context of more natural and antibiotic-free animal production. They have been widely evaluated in animal nutrition to improve the balance of beneficial gut microbiome (eubiosis) and elimina...
Article
Ruminants perhaps appeared about 50 million years ago (Ma). Five ruminant families had been extinct and about 200 species in 6 ruminant families are living today. The first ruminant family probably was small omnivore without functional ruminal microbiota to digest fiber. Subsequently, other ruminant families evolved around 18-23 Ma along with woodl...
Article
Stimulation of Ca 2+ absorption can counteract hypocalcemia at the onset of lactation. The plant bioactive lipid compound (PBLC) menthol is an agonist for nonselective cation channels of the transient receptor potential (TRP) family. It acutely stimulated Ca 2+ absorption in ruminal epithelia of nonadapted animals ex vivo and caused higher plasma C...
Article
Full-text available
The greenhouse gases (GHGs) derived from agriculture include carbon dioxide, nitrous oxide, and methane (CH4). Of these GHGs, CH4, in particular, constitutes a major component of the GHG emitted by the agricultural sector. Along with environmental concerns, CH4 emission also leads to losses in gross energy intake with economic implications. While r...
Article
Full-text available
Propolis, a resinous substance collected by honeybees, has long been recognized for its medicinal and health-promoting functional properties. Recently it has been considered as a natural alternative feed additive to antibiotics in ruminant diets to modulate ruminal microbiota and their fermentation patterns favorably. Propolis exists in various col...
Article
Full-text available
Ruminants perhaps appeared about 50 million years ago (Ma). Five ruminant families had been extinct and about 200 species in 6 ruminant families are living today. The first ruminant family probably was small omnivore without functional ruminal microbiota to digest fiber. Subsequently, other ruminant families evolved around 18-23 Ma along with woodl...
Preprint
Full-text available
In December 2019, the novel coronavirus disease pandemic (COVID-19) that began in China had infected more than 56 million individuals worldwide and accounted for more than 1.344.000 fatalities. With the dawn of this novel coronavirus (SARS-CoV-2), there was a requirement to select potential therapies that might effectively kill the virus, accelerat...
Article
Full-text available
Synchronizing energy and nitrogen in the rumen is important in optimizing profitability; for this reason, ammonia processing of these grains was evaluated for its potential to modify ruminal fermentation and to improve milk production performance. A mixture of ground triticale and oats (CONG, in a 60:40 ratio 40 by DM) was treated with urea (5 kg/1...
Article
Aloe vera is a medicinal plant cultivated for various applications in medical, food and health products. During the extraction of aloe vera gel from leaves of this plant, a substantial proportion of Aloe vera waste (AVW) is produced. The AVW is a great environmental concern for its disposal; however, it is rich in various bioactive compounds, which...
Cover Page
Full-text available
Ruminant nutrition plays an essential role in fulfilling the demands of ruminant derived healthy foods. At the same time, it is necessary to maintain high welfare standards. Ruminant nutrition and feeding also need to be ethically defensible and socially acceptable. Among the challenges of ruminant nutrition facing in the coming years are: risk of...
Article
Full-text available
Many dairy producers are keen to feed low-producing late-lactation cows only once per day (1×) to reduce production costs. This study examined effects of feeding frequency (FF: thrice versus once daily) on behavioral patterns, ruminal fermentation, and milk production performance of cows and supplementation of yellow grease oil (YO) rich in 18:2n-6...
Preprint
Full-text available
Ban and restriction of in-feed antibiotics for farm animals due to potential emergence of antibiotic resistant pathogenic microorganisms has led to search newer antimicrobial feed additives. Recently, various nanomaterials have been tested for antimicrobial actions on the pathogenic microorganisms including antibiotic resistant bacteria. They have...
Article
Parasitological and immunological responses to the experimentally induced Haemonchus contortus infection were compared between Garole and Sahabadi breeds of sheep. The experiment was conducted in a 2 (breed) × 2 (infection status) factorial arrangement with a completely randomised design. Two breeds of sheep were divided into infected (n = 10) and...
Article
Full-text available
Nanobiotechnology is a growing field in animal and veterinary sciences for various practical applications including diagnostic, therapeutic, and nutritional applications. Recently, nanoforms or nanoparticles (NP) of essential minerals have been explored for growth performance, feed utilization, and health status of animals. Various mineral NP, such...
Conference Paper
Full-text available
Dairy producers are keen to feed the low-producing late-lactation cows only once per day (1×/d) to reduce feeding costs. We examined the possible interactions between feeding frequency (FF) and yellow-grease oil (YO) supplementation on feeding behavior of cows. Twenty-four late-lactation Holstein cows, individually housed, were assigned to four tre...
Article
Recently, the narrow-leafed, blue lupine (Lupinus angustifolius) seeds, including the Tango variety, have been used as a potential feed of livestock animals. However, there is still a limited knowledge of possible action of the Tango lupine seed meal (LSM) on ruminal fermentation, enteric methane production, milk yield and composition in dairy catt...
Article
Natural plant bioactive compounds (PBC) have recently been explored as feed additives to improve productivity, health and welfare of poultry following ban or restriction of in-feed antibiotic use. Depending upon the types of PBC, they possess antimicrobial, enzyme secretion stimulation, antioxidant and many pharmacological properties, which are res...
Article
Presently, there are no models for predicting nitrogen excretion (NE) in buffaloes, which are required for preparation of inventory of NE. Thus, this study aimed to develop statistical models to predict NE from animal and dietary characteristic variables. A dataset of 481 treatment means from 143 publications was constructed, which contained at lea...
Article
Full-text available
The efficacy of methane (CH4) suppression using medium‐chain fatty acids (MCFA) remains inconclusive, despite a number of studies on this topic are available. We thus carried out a meta‐analysis to integrate the published data on different concentrations and types of MCFA such as lauric acid and myristic acid, which investigated ruminal methanogene...
Article
Full-text available
The aim of this study was to evaluate the effects of medicinal herbal mixtures rich in phenolic, flavonoid and alkaloid compounds on ruminal fermentation and microbial populations, and fatty acid (FA) concentrations and lipid oxidation in tissues of lambs infected with the gastrointestinal nematode (GIN) parasite (Haemonchus contortus). Parallel in...