Volume 43, June 2018 | Newsletter Editor: Dr G.B. Havenstein, |
Executive Committee
Secretary's Report
Board meeting 2018
The annual WPSA board meeting is planned for 16-17 September 2018 in Dubrovnik, Croatia, prior to the European Poultry Conference.
WPSA programmes
WPSA has several programmes to support members and branches. Details on the Travel Grant programmes, the Speakers’ Bureau programme and proposals for Branch Development can be found on the WPSA website. Criteria for eligibility are published together with the (different) deadlines for the individual programmes. Please follow the instructions as inaccurate, incomplete and late applications have to be rejected.
WPSA presence at conferences and exhibitions
WPSA representatives were present at AGRA ME, Dubai, UAE and Victam Asia in Bangkok, Thailand. Visitors collected promotional materials for WPSA, the WPS Journal, WPC 2020 and for several other symposia and conferences which were on display.
During the coming month, WPSA representatives will also attend VIV Europe, Utrecht, The Netherlands. Many members have already indicated that they will be visiting our booth during the exhibition.
The Asian Pacific Poultry Conference held in Bangkok, Thailand, from 25-27 March, was a great success. Over 1200 participants came from all over the world.
From 9-11 May the International Poultry Conference that took place in Nigde, was organised by the Turkish branch of WPSA; and from 15-17 May the International Conference that was held in Sergiev Posad, which was organised by the Russian Branch of WPSA, were attended. Both conferences were very well attended and proved that knowledge dissemination is very important. These types of meetings are excellent tools for that purpose.
During the coming months, several conferences and other meetings are scheduled. In June, the Mediterranean Poultry Summit, Torino, Italy; and in September the European Poultry Conference, Dubrovnik, Croatia, will be held. In November the Algerian Branch is organising the Algerian and Maghreb Conference in Constantine, Algeria; and in Atlanta, Georgia, USA, there is a Poultry Summit on innovations being planned. Members are invited to attend these events and to meet many WPSA members and representatives. Details on these and other meetings can be found on the WPSA calendar.
Change of officers
During the Asia Pacific Poultry Conference in Bangkok, Thailand, representatives of the Asia Pacific Federation member branches met. Election of the next president and the election of the venue for the next Asia Pacific Poultry Conference were on the agenda.
Dr Sakchai Sriboonsue from Thailand was elected president and is the successor of Mr Alan Gibbins, who has served as president for past 12 years. The China branch will organise the next APPC 2022.
Cooperation with the organisation on World Veterinary Education in Production Animal Health (WVEPAH)
The WVEPAH, a non-profit organisation organises training courses on poultry (for 3 à 4 weeks) in several countries. More details are on www.wvepah.org. All activities will also be announced on our website and in the WPS Journal.
Dr Roel Mulder
Treasurer's Report
The last three months have been busy ones. Thanks to the energetic work of Dr Mulder, I had a fine list of generous companies ready to support our Journal. So springtime duties included invoicing all those Journal advertisers and sponsors. I am delighted to report that well over two-thirds have already fulfilled their commitments and more payments arrive weekly.
It was my great pleasure to receive an invitation from the Mexico Branch to participate in their Universiada. This event was held prior to the start of the 2018 ANECA Conference in Ixtapa, Guerrero. The Branch had invited some 150 veterinary students to participate in the daylong event. First the students heard from the hosts and then were motivated by the life stories of a number of successful poultry veterinarians and poultry producers. My slot was devoted to telling the students about WPSA and how they could use their WPSA membership to develop professionally, both while in school and throughout their careers. A good portion of my presentation was devoted to walking them through the steps in making a good Young Scientist Travel Grant application.
Unfortunately, many of the students had limited English skills. Fortunately for me, our member and ANECA President, Dr Miguel Casillas, assisted me with translations. Helping Dr Casillas with so much of the prep work for this event were Julio Arrellano (Administrative Director of ANECA) and our faithful, Dr Maritza Tamayo.
Covering not only the Universiada, but the entire ANECA event was Benjamin Ruiz, Editor-in-Chief for Watt Publishing’s Industria Avicola. Before I even departed from Ixtapa, there was an article on-line detailing the Universiada. Mr. Ruiz also gave a very nice ‘plug’ for WPSA and the opportunities we offer students. I was especially happy that he reported on the two Mexican students who took advantage of such WPSA-sponsored programmes to attend the WPSA/United States Branch Student Programme at the 2018 Pacific Egg and Poultry Association in California.
Dr Francine Bradley
Branch Development Programme
In the Board meeting held during WPC2016 in Beijing, China, the Board decided to increase the funds available for Branch Development by making a formal call for Branch Development Proposals. In 2018 we approved proposals from Croatia and Senegal.
For more information click here.
Next deadline for submission of Branch Development Proposals is July 1st.
![]() |
Dubrovnik, Croatia, 17-21 September 2018 |
The Croatian Branch is finalising its preparation for EPC 2018 which will be held in Dubrovnik, Croatia, on September 17-21, 2018. The submission of abstracts ended on March 15, 2018. EPC 2018 will have a very interesting scientific programme, so you are warmly invited to join us and contribute to the Congress!
The Conference will be held in Valamar Hotel & Resorts in Dubrovnik, Croatia, from 17-21 September, and we anticipate that more than 1,000 participants from all over the world will be in attendance to improve their knowledge of poultry research and production.
Early Bird Registration ended on April 30, 2018, but registration is still open to those interested in attending. Special registration fees apply for WPSA members and students.
More information can be found on the web site www.epc2018.com.
Conference topics
|
|
EPC2018 Programme at a glance
MONDAY, 17TH SEPTEMBER 2018
Welcome cocktail and Opening Ceremony
TUESDAY, 18TH SEPTEMBER 2018
Plenary sessions in the morning
Oral presentation and Workshops in the afternoon
WEDNESDAY 19TH SEPTEMBER 2018
Plenary sessions in the morning
Oral presentation and Workshops in the afternoon
Gala dinner
THURSDAY, 20TH SEPTEMBER 2018
Plenary sessions in the morning
Workshops in the afternoon
Closing ceremony
FRIDAY, 21ST SEPTEMBER 2018
Technical tour and Youth programme
Plenary Speakers and the titles of their Lectures
(Alphabetical order)
Barbut, Shai: New insights on breast myopathies
De Cesare, Alessandra: Metagenomic insights into the dynamics of microbial communities in poultry and poultry products : current challenges and future opportunities.
Humphrey, Tom: Campylobacter infection compromises broiler health, welfare and performance.
Norton, Tomas: Application of precision livestock farming technologies in the poultry sector.
Nys, Yves: How scientific innovation may improve egg production and quality on the development of non-food uses of eggs.
Ryhlil, Ivan: Microbiota, chicken gut health, and antibiotic reduction/resistance.
Savic, Vladimir: Viral infections of poultry – the globally challenging situation.
Siegert, Wolfgang: Non-essential amino acids – the forgotten nutrients.
Sossidou, Evangelia N.: Managing on-farm health and welfare risks to promote sustainability in poultry.
Steenfeldt, Sanna: Alternative protein sources for poultry nutrition.
Tixier-Boichard, Michelle: Are there limits to selection in poultry: theoretical, biological, ethical, environmental?
Yalcin, Servet: Preincubation and incubation conditions, hatching time and broiler growth.
WPSA’s Croatian Branch members are looking forward to welcoming you to Dubrovnik
Helga Medic, Secretary, Croatia Branch
European Federation
The European Federation has numerous conferences planned between now and the end of 2018.
News from a number of European Federation's working groups is provided below.
WPSA European Working Group News
WG2
Nutrition
The next European Symposium on Poultry Nutrition (ESPN2019) will be organised by the Polish Branch, and will be held in Gdansk, Poland from 10-13 June 2019. We will look forward to seeing all of you there.
WG4 and 5
The ‘XXIV European Symposium on the Quality of Poultry Meat’ will be conjointly held with the ‘XVIII European Symposium on the Quality of Eggs and Egg Products’ in Çeşme, İzmir, Turkey between 23 -26 June 2019. Visit http://www.eggmeat2019.com to keep you updated. Special reduced registration fees are available for WPSA members and students.
Asia Pacific Federation
Asia Pacific Federation Meeting
The Asia Pacific Federation held its General Meeting on 26th March during the Asian Pacific Poultry Conference in Bangkok. This was well attended by delegates from nine of the Federation branches as well as the President of WPSA, Dr Ning Yang and the General Secretary of WPSA, Dr Roel Mulder.
The current President, Senior Vice President and Junior Vice President of the Asia/Pacific Federation, their four-year terms at an end, stepped down. In the following election of officers of the Federation Dr Sakchai Sriboonsue from the Thailand branch was elected as the new President with Mr Chuang Ma from the China branch elected as Senior Vice-President and Dr Nasir Mukhtar from the Pakistan branch elected as Junior Vice-President.
The office of Secretary is not an elected one, so in due course a new Secretary will be chosen and announced by the Presidents. The outgoing Secretary is Dr M. Abdollahi from the New Zealand branch.
The Immediate Past President, Mr Alan Gibbins from the New Zealand branch, who had served in this role for 12 years congratulated the new leadership of the Federation and wished them and the Federation well for the future.
Under another agenda item, the selection of host for the upcoming 12th APPC was made. This was gained by the China branch. The meeting attendees thanked the China branch for taking on this huge responsibility.
Other discussions at the meeting focussed on the Federation’s Constitution and a draft protocol for the selection of hosts for future Federation conferences.
Alan Gibbins, President Asian/Pacific Federation
WPSA Asian-Pacific Working Group News
A/P WG3
Ratites
A meeting of the Ratite Working Group was held on 14 March 2018 in Oudtshoorn, South Africa. The next Ratite Science Symposium has been planned for 2020. Anyone who is involved in ratite research and is interested in joining the Ratite Working Group is asked to contact Anel Engelbrecht at .
Anel Engelbrecht
World's Poultry Science Journal
You are likely aware that the last few years have seen academic publishers engaging with scholarly collaboration networks in various ways, trying to balance their popularity with authors and researchers against concerns over large-scale copyright infringement. Cambridge University Press, along with SpringerNature and Thieme, has just signed an agreement with ResearchGate to foster responsible sharing - see our joint statement here. Other publishers took part in the negotiations and are working to have a deal in place soon.
Click here for the full article.
Upcoming articles
Articles in upcoming Journal(s)
- Muhammad Arif - Pigeon Pea (Cajanus cajan) as an alternative protein source in broiler feed
- Stephen Rose - Egg production in China
- Jag Mohan - History of artificial insemination in poultry, its components and significance
- Vincenzo Tufarelli - Practical applications of agricultural wastes in poultry feeding in Mediterranean and Middle East regions. Part 1: citrus, grape, pomegranate and apple wastes
- Mahmoud Alagawany - The usefulness of oregano and its derivatives in poultry nutrition
- Usama Aftab - Prospects of improving efficiency of feed uitilisation in broiler
- Birendra Mishra - Regulation of egg formation in the oviduct of laying hens
- Vincenzo Tufarelli - Practical applications of agricultural wastes in poultry feeding in Mediterranean and Middle East regions. Part 2: tomato, olive, date, sunflower wastes
- Elena Sizova - Metal particles as trace-element sources: current state and future prospects
- M. Shahid Mahmood - Role of cytosine-phosphate-guanosine-Oligodeoxynucleotides (CpG ODNs) as adjuvant in poultry vaccines
- Sun Chao - Prospects of royal jelly as a potential natural feed additive in poultry diets
Summaries
Pigeon Pea (Cajanus cajan) as an alternative protein source in broiler feed
M.E. ABD EL-HACK, A.A. SWELUM, M.A. ABDEL-LATIF, D. MÁS TORO and M. ARIF
Pigeon pea (PP), Cajanus cajan, is a plant that is cultivated for human food and animal feed. It exists as a wide range of cultivars, and their flexibility for use in animal rearing systems have made PP popular, especially for small-scale farmers. PP is grown widely in India and in parts of Africa and Central America. The main producers of PP in the world are India, Uganda, Tanzania, Kenya, Malawi, Ethiopia, Mozambique, the Dominican Republic, Puerto Rico, the West Indies in the Caribbean and Latin America region, Indonesia and the Philippines and Australia. Analysis has shown that PP contains 17.9-24.3% crude protein (CP) in whole grain, and 21.1-28.1% in split seeds, and high protein genotypes contain 32.5%. Optimal levels of utilisation have been shown to improve broiler performance and may reduce daily feed cost. However, PP contains anti-nutritional factors that negatively affect feed efficiency. The use of processing methods such as fermentation, boiling, milling, soaking, and roasting can minimise any harmful effects and improve its nutritive quality, positively enhancing performance parameters. Studies on the use of PP suggested that it can be included at 7.5% of the diet or as 50% substitution for soybean meal in broiler diets.
Egg production in China
Z. YANG, S.P. ROSE, H.M. YANG, V. PIRGOZLIEV and Z.Y. WANG
China has been the world’s largest producer of eggs for the last 30 years. There have been considerable recent changes in the structure of the egg industry due to rapid economic growth, improved supply chains and favourable prices. Since 2012, revenue from poultry has increased by 8.7% on average. Annual growth rate of egg production has been approximately 0.6 million tonnes per year from 2000 to 2016 (FAO, 2017), and 2016 saw the total eggs produced reaching a peak of 31 million tonnes. Egg production in China continues to provide the population with a significant proportion of their intake of high quality dietary protein. Egg consumption is expected to continue to increase with the rise in the urban population. It is probable that the highest increase in demand for eggs will be for ‘out of home’ consumption and in processed food products. These levels of production are associated with the spread of intensive systems. The poultry sector is no longer dominated by hundreds of millions of smallholders keeping birds as a side-line activity and many small farmers have ceased production. Chinese consumers are becoming more focused on the quality and safety of eggs. Future developments in the egg production are expected to concentrate on quality, safety and traceability of eggs.
History of artificial insemination in poultry, its components and significance
J. MOHAN, S.K. SHARMA, G. KOLLURI and K. DHAMA
Artificial insemination (AI) technology use in poultry production has enabled the rapid dissemination of genetic material from a small number of superior males to a high number of females. Excellent fertility in poultry can be obtained by AI compared to natural mating. Successful application of this technique needs good quality semen that should be inseminated very close to the sperm storage tubules in the female to obtain the optimum fertility in chicken. Since the 1950s, AI has been used in commercial poultry production, initially in Israel and Australia, followed by the USA. Doses of spermatozoa required for AI increases with storage time or that obtained from aged bird. The average volume of semen is between 0.05-0.50 ml in light chicken breeds and 0.1-0.9 ml in heavy males. In light turkeys, volume is 0.08-0.30 ml, whereas in heavy-weight males it is 0.1-0.33 ml. Quality evaluation of semen gives an indication of the male reproductive potential and is the major determinant of fertility and subsequently hatchability of eggs. Semen from cockerels contains between 3-7 billion sperm cells/ml. Among the several factors that influence the semen quality, sperm motility is a primary determinant of fertility in domestic fowls; however, visual examination of semen cannot be ignored for successful AI under field conditions. Dilution of low and viscous volume of avian semen is essential for handling and storage, and chicken semen typically requires a two to three-fold dilution. Collected samples should be preserved at 2-8°C for avian species, ideally with turkey sperm stored at 4-8°C, and chicken semen at 7-8°C for good fertility. Currently, the technique of AI in most of the poultry species is well developed; however, there is a need for successful development programme of this technique in non-domesticated birds to assist in creating viable, self-sustaining populations of critically endangered species.
Practical applications of agricultural wastes in poultry feeding in Mediterranean and Middle East regions. Part 1: citrus, grape, pomegranate and apple wastes
M. AZIZI, A.R. SEIDAVI, M. RAGNI, V. LAUDADIO and V. TUFARELLI
In the last few decades, there has been growing interest in the use of agricultural wastes as feed ingredients in poultry diet to maximise their potential output. Many wastes of the agroindustry (e.g. citrus, grape, pomegranate and apple processing) have significant antioxidant properties, due to their bioactive compounds (polyphenols, flavonoids). It has been reported that citrus and grape wastes can be successfully included in broilers diets up to 3%, which increases carcass and meat yield and reduces abdominal fat (by 10% on average). Pomegranate can be included up to 2% supplementation and is associated with improved feed efficiency (by 12% in broilers). Apple by-products can be formulated up to 5% in diets for meat-type broilers and up to 10% in laying hens diet to reduce oxidative stress. Therefore, the application of these by-products in poultry diets could combine the positive effects of improving the qualitative characteristics of animal products as well as human health with reducing concerns related with their disposal into the environment. In this review, the findings on the effects of some agricultural wastes, from typically-cultivated products originating in Mediterranean and Middle East regions on poultry performance, carcass characteristics, immune response, plasma constitutes, intestinal microbiota and enzyme activity are reviewed and discussed.
The usefulness of oregano and its derivatives in poultry nutrition
M. ALAGAWANY, M.E. ABD EL-HACK, M.R. FARAG, H.M. SHAHEEN, M.A. ABDEL-LATIF, A.E. NORELDIN and A.K. PATRA
Origanum vulgare is a natural, less toxic, residue free feed supplement for poultry when compared to other synthetic ingredients. It contains key bioactive components, including as thymol and carvacrol. O. vulgare as a poultry feed supplement has had an antimicrobial, antioxidant, antiviral, immunomodulatory and antiparasitic effect. The potential advantages of utilising oregano extracts, in poultry diets include improved feed intake and feed conversion, enhanced digestion, expanded productive performance, down-regulated disease incidence and economic losses. From the available literature, average inclusions of oregano essential oil up to 600 mg/kg in broiler diets increased body weight gain. Using 1% oregano oil in broiler diets improved feed conversion ratio and feed utilisation. Moreover, oregano can induce a marked improvement on the intestinal microbiota and ileal villus height of broilers when combine with attapulgite by ratio 15 mg/kg of oregano. Broilers fed 300-ppm oregano oil in their diet display higher IgG titres relative to those reared on control (without supplementation) diet. Including 240 mg oregano supplementation per kg diet appears to give an optimum level for protecting broiler chickens from C. perfringens infections. Bioactive components extracted from O. vulgare parts could be used in poultry diets levels of 10 to 30 g/kg. This review includes information on the use of O. vulgare and its derivatives in poultry nutrition. To maximise the overall productivity of poultry, oregano may be used as a natural alternative to antibiotics and drugs due to the absence of side effects and residues.
Prospects of improving efficiency of feed utilisation in broiler
U. AFTAB, M.R. BEDFORD and D. CRESWELL
This review provides a synopsis of nutritional strategies used to improve the efficiency of feed efficiency (FE) of broilers at a given nutrient density. A small reduction in feed intake can improve FE as a function of improved nutrient digestibility and or post-absorptive metabolism. Restriction of nutrient intake to slow down growth during the mid-growth period followed by reinstatement of conventional feed afterwards, may lead to compensatory growth and improved FE. Replacement of part of the dietary starch with a slowly digested starch source has been shown to help improve growth performance and FE, perhaps by sparing amino acid catabolism by enterocytes, and/or through more synchronised uptake of glucose and nitrogen by the systemic circulation. Development of a larger, more functional gizzard, through provision of feed with coarser particles or structural fibre has been shown to improve digestibility and efficiency of nutrient utilisation. Although broilers are often fed pelleted diets which achieve better growth performance than a mash counterpart, the particulars of the process, including pellet quality, pelleting temperature, and particle size within pellets are important determinants of the magnitude of the pelleting response. Use of the high doses of phytase, often referred to as phytase super-dosing, targeting more complete phytate destruction have been shown to improve FE of broiler fed commercial diets. It can be speculated that combined use of these strategies could potentially help improve FE by between 8 to 10 points (0.08-0.1).
Regulation of egg formation in the oviduct of laying hen
N. SAH and B. MISHRA
In the adult hen, the oviduct receives the ovum from the ovary and provides the biological environment for the formation and potential fertilisation of the egg. During egg formation, albumin, from the magnum is deposited around the yolk, followed by the eggshell membranes from the isthmus, which subsequently surround the egg. As the yolk traverses through the oviduct, calcium is deposited on to it, from the uterus, forming a hardened eggshell. Ovalbumin, avid in and ovomucin secreted from magnum provides content and antimicrobial activity in the egg-white. Collagen X and fibril in 1 from the isthmus make up the fibrous eggshell membranes. Cabinda 1, ovocleidin-116 and secreted phosphoprotein 1 secreted from the shell gland contribute in calcium ion remodelling for eggshell mineralisation. This review summarises the expression pattern and functional role of genes having a leading role in the egg formation.
Practical applications of agricultural wastes in poultry feeding in Mediterranean and Middle East regions. Part 2: tomato, olive, date, sunflower wastes
M. AZIZI, A.R. SEIDAVI, M. RAGNI, V. LAUDADIO and V. TUFARELLI
Agroindustry wastes from tomato, olive, date and sunflower processing have valuable nutritional characteristics, and could be included in poultry rations to facilitate reducing feeding costs. By-products of tomato and olive processing can be supplemented in the diet of broilers and laying hens by up to 10% without detrimental effects on production, whilst improving the biochemical blood profile and enhancing the oxidative status of birds. Published research has shown that feeding sunflower and date wastes could be successfully added to diet at high inclusion levels (up to 30 and 40%, respectively) resulting in heavier broiler carcasses and increased number of eggs produced by laying hens. In this paper, applications of agricultural wastes and by-products in poultry feeding is reviewed, and the documented and novel findings related to their influence on poultry production, health and gut microbiota are discussed.
Metal particles as trace-element sources: current state and future prospects
V.I. FISININ, S.А. MIROSHNIKOV, Е.А. SIZOVA, А.S. USHAKOV and Е.P. MIROSHNIKOVA
Birds have evolved in direct contact with natural nanoparticles (NPs) that are identical to artificial trace-element NPs. This relationship, the high action potential and their ability to reduce environmental pollution make NPs a promising component of bird diets. However, from available published studies there is no unity in justifying the applied dosages of NPs and their calculations. NPs are used in the studies in various doses, for example: Cu 0.5-50 mg/kg, Ag 10-1000 mg/kg, Se 0.2-5 mg/kg, Cr 500-1500 ppb. Therefore, universal approaches and criteria of NP investigations are necessary for the establishment of their use in feed.
The mechanisms of action of the trace elements in artificial NPs in birds vary from the those of ionic forms of trace elements, which determine the differences in the productive effect. According to data from different authors, chickens receiving NPs in feed have higher chickens body weight by 13-24%. Such benefits have increased interest in sources of trace-element NPs significantly over the past two decades. The design of trace-element NPs has led to promising developments in the safe use of NPs for poultry nutrition, such as coating NPs with inert substances and adjusting their size. However, constraining circumstances determined by the difficulty of predicting the toxic properties of nanostructures exist, even though artificial trace-element NPs are a relatively safe class of nanostructures due to their production requirements, and metal NPs are already used in human food and medicine. The following review discusses the benefits and potential hazardous effects of NPs and the possibility of using them as feed supplements for poultry.
Role of cytosine-phosphate-guanosine-Oligodeoxynucleotides (CpG ODNs) as adjuvant in poultry vaccines
M. USMAN ISHAQ, AZHAR RAFIQUE, H.M.N. CHEEMA, M. UMER ASHRAF, S.U. RAHMAN, R. ZAHID ABBAS and M. SHAHID MAHMOOD
Oligodeoxynucleotides (ODNs) containing cytosine-phosphate-guanosine sequence (CpG) is considered as an immune stimulator when it is fed to animals. These synthetic molecules mount different immune responses in the animals including mice, chickens, ducks, dogs and horses. CpG ODNs induce specific antigenic immunity against co-administered vaccines and are well tolerated in healthy individuals and are capable of stimulating toll-like receptors (TLRs) such as TLR-9 to activate innate immunity. The CpG ODNs can be used as an adjuvant in different vaccines synthesised specifically for poultry diseases caused by viruses and bacteria. In chickens, CpG ODNs stimulate TLRs involved in humoral immunity. CpG ODNs have been used as mucosal vaccine adjuvants against several pathogens, including avian influenza and Newcastle disease. The CpG ODNs function to protect the chickens from Newcastle disease by producing plasma dendric cells (pDCs) which ultimately produce interferons (INFs). The inoculation of CpG ODNs along with the cationic microparticles and DNA vaccine for infectious bursal disease virus result into the influx of T cells and a reduction of antigen load. When CpG ODNs are used against avian leucosis, they result in significantly higher antibody titres. In many other vaccines e.g., infectious laryngotracheitis, infectious bronchitis, herpes, viral enteritis, Marek’s disease virus, E. coli and Salmonella spp. including CpG ODNs exhibit immunostimulatory effects. In conclusion, CpG ODNs may be used as effective adjuvants in viral, bacterial and parasitic vaccines in poultry.
Prospects of royal jelly as a potential natural feed additive in poultry diets
M. SAEED, S.A. KALHORO, M. NAVEED, F.U. HASSAN, M. UMAR, M. RASHID, S.A. MEMON, F. SOOMRO, M.A. ARAIN and S. CHAO
Royal Jelly (RJ) is product from bees that is used to feed larvae in the hive as well as a main nutritional source for the queen honey bee. It has various important biological activities including as an antioxidant, immunomodulatory, anti-inflammatory, antimicrobial, cholesterol-lowering, and growth promoter activities and has the ability for inhibition of certain enzymatic degradation. It can be used for the improvement of growth performance, gut health and quality and safety of animal products in poultry due to its antioxidant and immune modulating properties. The antioxidant activity of RJ is mainly due to the presence of polyphenolic compounds. It is an excellent source of B and C vitamins and folic acid. The mineral profile of RJ is useful as it contains major macro and micro minerals. Studies conducted on supplementation with RJ in poultry diets have shown a significant increase in body weight, egg production, and immune levels and is especially useful in organic production. Supplementation of RJ at the level of 10 and 15 mg/kg in layer diets positively influenced egg weight (by 5.0% and 4.8% respectively), egg production (10.5% and 11.0% respectively), weight gain of hens (7.0% and 6.5% respectively) and yolk pigmentation (9.5% and 9.7% respectively). Total leukocyte and erythrocyte counts in the diet containing 200 mg/kg RJ were significantly higher than the diet contained 100 mg/kg or the unsupplemented control group. However, the heterophil/lymphocyte ratio and heterophil percent were reduced in RJ-fed groups. Supplementation poultry diets with RJ offers an opportunity to maximise profit from safe and quality poultry production.
Branch News