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Ben Said S, Gmati R, Aroua M, Lassoued N, Rekik M, Mahouachi M. Substitution of soyabean meal by faba bean improves body weight, sperm production and testosterone concentration in mature Queue Fine de l'Ouest rams. Trop Anim Health Prod 2023; 55:226. [PMID: 37226004 DOI: 10.1007/s11250-023-03619-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 05/09/2023] [Indexed: 05/26/2023]
Abstract
The current study aimed at investigating the effects of partial or total substitution of soybean meal with faba bean on reproductive parameters of Queue Fine de l'Ouest rams. Eighteen adult rams (49.8 ± 3.7 kg and 2.4 ± 1.5 years old) were divided into three homogenous groups. Rams received oat hay ad libitum and 3 types of concentrate (33 g/BW0.75) where soybean meal was the main protein source (SBM diet, n = 6), partially (50%, SBMFB diet, n = 6) or totally (100% FB diet, n = 6) substituted in nitrogen basis by local faba bean. The volume of ejaculate, sperm concentration and sperm mortality rate were measured weekly by collecting semen using an artificial vagina. Serial blood samples were collected 30 days and 120 days after the beginning of the experiment in order to assess plasma testosterone concentrations. The results showed that hay intake was affected (P < 0.05) by the nature of the nitrogen source incorporated (1032.3 ± 12.2; 1026.8 ± 56.6 and 972.8 ± 39.05 g DM/d for SBM, FB and SBMFB respectively. The average live weight of the rams increased from 49.8 ± 0.4 (week 1) to 57.3 ± 0.9 kg (week 17) without effect of the diet. A positive effect of faba bean incorporation in the concentrate was observed on ejaculate volume, concentration and spermatozoa production. All these parameters were significantly higher in SBMFB and FB groups than in SBM group (P < 0.05). The protein source did not affect the percentage of dead spermatozoa and the total abnormalities which were similar for the three diets (38.7; 35.8 and 38.1% for SBM; SBMFB and FB, respectively). The mean testosterone concentration was higher (P < 0.05) in rams fed with faba bean (1.7 ± 0.7 to 1.9 ± 0.7 ng/ml for the SBMFB and the FB groups respectively) than in rams fed SBM diet (1.06 ± 0.5 ng/ml). It was concluded that the substitution of soybean meal by faba bean improved the reproductive performance and did not affect sperm quality in Queue Fine de l'Ouest rams.
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Affiliation(s)
- Samia Ben Said
- Laboratoire d'Appui à la Durabilité des Systèmes de Production au Nord Ouest, ESAK, University of Jendouba, 7119, Le Kef, Tunisia.
| | - Rima Gmati
- Laboratoire d'Appui à la Durabilité des Systèmes de Production au Nord Ouest, ESAK, University of Jendouba, 7119, Le Kef, Tunisia
| | - Mohamed Aroua
- Laboratoire d'Appui à la Durabilité des Systèmes de Production au Nord Ouest, ESAK, University of Jendouba, 7119, Le Kef, Tunisia
| | - Narjess Lassoued
- Laboratoire de Production Animale et Fourragères, INRAT, University of Carthage, 2049, Ariana, Tunisia
| | - Mourad Rekik
- International Centre for Agricultural Research in the Dry Areas (ICARDA), Amman, Jordan
| | - Mokhtar Mahouachi
- Laboratoire d'Appui à la Durabilité des Systèmes de Production au Nord Ouest, ESAK, University of Jendouba, 7119, Le Kef, Tunisia
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2
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Kim JI, Kim SK, Kim KE, Kim YR, Kim EJ, An BK. Effects of Lupin Kernel (Lupinus angustifolius) and Faba Bean (Vicia faba) on Growth Performance and Hepatic Fatty Acid Profiles in Broiler Chicks. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2023. [DOI: 10.1590/1806-9061-2022-1675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- JI Kim
- Konkuk University, Republic of Korea
| | - SK Kim
- Konkuk University, Republic of Korea
| | - KE Kim
- Nonghyup Feed, Republic of Korea
| | - YR Kim
- Yonam College, Republic of Korea
| | - EJ Kim
- Yonam College, Republic of Korea
| | - BK An
- Konkuk University, Republic of Korea
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3
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Obianwuna UE, Oleforuh-Okoleh VU, Wang J, Zhang HJ, Qi GH, Qiu K, Wu SG. Natural Products of Plants and Animal Origin Improve Albumen Quality of Chicken Eggs. Front Nutr 2022; 9:875270. [PMID: 35757269 PMCID: PMC9226613 DOI: 10.3389/fnut.2022.875270] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 05/23/2022] [Indexed: 11/17/2022] Open
Abstract
Albumen quality is recognized as one of the major yardsticks in measuring egg quality. The elasticity of thick albumen, a strong bond in the ovomucin-lysozyme complex, and excellent biological properties are indicators of high-quality albumen. The albumen quality prior to egg storage contribute to enhance egg’s shelf life and economic value. Evidence suggests that albumen quality can deteriorate due to changes in albumen structure, such as the degradation of β-ovomucin subunit and O-glyosidic bonds, the collapse of the ovomucin-lysozyme complex, and a decrease in albumen protein-protein interaction. Using organic minerals, natural plants and animal products with antioxidant and antimicrobial properties, high biological value, no residue effect and toxicity risk could improve albumen quality. These natural products (e.g., tea polyphenols, marigold extract, magnolol, essential oils, Upro (small peptide), yeast cell wall, Bacillus species, a purified amino acid from animal blood, and pumpkin seed meal) are bio-fortified into eggs, thus enhancing the biological and technological function of the albumen. Multiple strategies to meeting laying hens’ metabolic requirements and improvement in albumen quality are described in this review, including the use of amino acids, vitamins, minerals, essential oils, prebiotics, probiotics, organic trace elements, and phytogenic as feed additives. From this analysis, natural products can improve animal health and consequently albumen quality. Future research should focus on effects of these natural products in extending shelf life of the albumen during storage and at different storage conditions. Research in that direction may provide insight into albumen quality and its biological value in fresh and stored eggs.
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Affiliation(s)
- Uchechukwu Edna Obianwuna
- National Engineering Research Center of Biological Feed, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Vivian U Oleforuh-Okoleh
- Department of Animal Science, Faculty of Agriculture, Rivers State University, Port Harcourt, Nigeria
| | - Jing Wang
- National Engineering Research Center of Biological Feed, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hai-Jun Zhang
- National Engineering Research Center of Biological Feed, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Guang-Hai Qi
- National Engineering Research Center of Biological Feed, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Kai Qiu
- National Engineering Research Center of Biological Feed, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shu-Geng Wu
- National Engineering Research Center of Biological Feed, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
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Aguihe PC, Kehinde AS, Halidu SK, Joshua DA, Samuel KU, Komolafe PL, Ilaboya II. Performance and egg qualities of laying japanese quails fed yam peel meal based diets with enzymes complex+yeast supplementation. ACTA SCIENTIARUM: ANIMAL SCIENCES 2021. [DOI: 10.4025/actascianimsci.v44i1.53335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 10-week experiment was conducted to evaluate the combined effect of enzyme complex + yeast (Maxigrain®, MXG®) supplementation of sun-dried yam peel meal (YPM) based diet of laying Japanese quails (Coturnix coturnix japonica) on performance and egg quality. A total of 240, seven-weeks old quails were distributed in a completely randomize design with four dietary treatments and five replicates of 12 quails each. Diet 1 served as the control diet without YPM while diet 2, 3, and 4 contained 25, 50, and 75% YPM with MXG® supplementation (1g per kg), respectively. MXG® supplementation in YPM diets improved (p < 0.05) egg mass and feed conversion per egg. Increasing levels of YPM with MXG® supplementation did not show any effect (p > 0.05) on internal and external egg quality attributes except for eggshell weight and thickness which was higher (p < 0.05) in quails fed 75% YPM diet. It was concluded, therefore, that the utilization of YPM as an alternative dietary ingredient with MXG® supplementation can be tolerated in the diets of laying Japanese quails up to 75% inclusion level without any negative effect on productive and egg quality performance.
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Meng Z, Liu Q, Zhang Y, Chen J, Sun Z, Ren C, Zhang Z, Cheng X, Huang Y. Nutritive value of faba bean ( Vicia faba L.) as a feedstuff resource in livestock nutrition: A review. Food Sci Nutr 2021; 9:5244-5262. [PMID: 34532032 PMCID: PMC8441412 DOI: 10.1002/fsn3.2342] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/18/2021] [Accepted: 04/19/2021] [Indexed: 11/25/2022] Open
Abstract
The review evaluates faba bean (Vicia faba L.; FB) seeds relative to their nutritional composition, their content of antinutritional factors, and their impact on animal performance. The literature indicates that FB plant is a cool-season, annual grain legume that grows the best in cool and humid conditions. Its seeds are rich in protein, energy, and mineral compounds and have particularly high unsaturated fatty acid levels. However, FB seeds also contain various proportions of antinutritional factors (ANFs) that can interfere with nutrient utilization in nonruminants. The various processing methods are efficient in either reducing or inactivating the ANFs of FB seeds, with extrusion treatment offering the most effective method of improving apparent nutrient and energy digestibility of nonruminants. In vivo studies on ruminants, pigs, poultry, and fishes reveal that FB seeds have the potential to be used as a substitute for soybean meal and/or cereal seeds in livestock diets in order to support milk, meat, and/or egg production.
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Affiliation(s)
- Zhu Meng
- Department of Animal Science and TechnologyAnhui Agricultural UniversityHefeiChina
| | - Qingqing Liu
- Department of Animal Science and TechnologyAnhui Agricultural UniversityHefeiChina
| | - Yan Zhang
- Department of Animal Science and TechnologyAnhui Agricultural UniversityHefeiChina
| | - Jiahong Chen
- Center of Agriculture Technology Cooperation and Promotion of Dingyuan CountyChuzhouChina
| | - Zhipeng Sun
- Department of Animal Science and TechnologyAnhui Agricultural UniversityHefeiChina
| | - Chunhuan Ren
- Department of Animal Science and TechnologyAnhui Agricultural UniversityHefeiChina
- Center of Agriculture Technology Cooperation and Promotion of Dingyuan CountyChuzhouChina
| | - Zijun Zhang
- Department of Animal Science and TechnologyAnhui Agricultural UniversityHefeiChina
- Center of Agriculture Technology Cooperation and Promotion of Dingyuan CountyChuzhouChina
| | - Xiao Cheng
- Department of Animal Science and TechnologyAnhui Agricultural UniversityHefeiChina
- Center of Agriculture Technology Cooperation and Promotion of Dingyuan CountyChuzhouChina
| | - Yafeng Huang
- Department of Animal Science and TechnologyAnhui Agricultural UniversityHefeiChina
- Center of Agriculture Technology Cooperation and Promotion of Dingyuan CountyChuzhouChina
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Hussein EOS, Suliman GM, Alowaimer AN, Ahmed SH, Abd El-Hack ME, Taha AE, Swelum AA. Growth, carcass characteristics, and meat quality of broilers fed a low-energy diet supplemented with a multienzyme preparation. Poult Sci 2020; 99:1988-1994. [PMID: 32241481 PMCID: PMC7587662 DOI: 10.1016/j.psj.2019.09.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 09/22/2019] [Accepted: 09/29/2019] [Indexed: 11/29/2022] Open
Abstract
The effect of a low-ME diet with a multienzyme (Kemzyme Plus, Kemin, Des Moines, IA) blend on performance, meat quality, and carcass traits was evaluated in Hubbard broiler chicks. A total of 120 Hubbard broiler chicks were allocated to the following 4 experimental groups and every group was separated into 6 replicates, with 5 birds per replicate: control (3,180 kcal/kg of ME), control + 0.50 g/kg diet of enzyme (Cont-Enz), low-ME diet (3,080 kcal/kg), and low-ME + 0.50 g/kg diet of enzyme (low-ME-Enz). The trail lasted for 16 D (32 to 48 D of age). No significant differences in growth parameters or carcass traits were observed among treatments. However, liver weight increased with the low-ME-Enz diet (P = 0.038). The low-ME diet recorded the highest weight for the bursa (P = 0.043) and thymus (P = 0.019). Dietary treatments had significant impacts on the length of duodenum, ileum, and cecum, as well as the weight of duodenum. The length of duodenum, ileum, and cecum increased with enzyme supplementation. The myofibril fragmentation index was lower with the Cont-Enz, low-ME, and low-ME-Enz diets than with the control diet (P = 0.043). The shear force increased with the low-ME-Enz diet (P = 0.022) than the control diet. Dietary treatments influenced breast meat yellowness (P = 0.019), whereas the low-ME diet had the lowest yellowness at the slaughtering age. The dietary treatments affected the breast meat pH (P = 0.001), with the control diet having the highest pH value after 24 hours. Thus, there was no effect of low-ME or enzyme supplementation to the control or low-ME diet on growth performance or carcass yield. However, feeding a low-ME diet or Cont-Enz preparation influenced organ and small intestine weights and meat characteristics.
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Affiliation(s)
- E O S Hussein
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, 11451 Riyadh, Saudi Arabia.
| | - G M Suliman
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, 11451 Riyadh, Saudi Arabia; Department of Meat Production, Faculty of Animal Production, University of Khartoum, Sudan
| | - A N Alowaimer
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, 11451 Riyadh, Saudi Arabia
| | - S H Ahmed
- Department of Basic Sciences, College of Veterinary Medicine, Sudan University of Science and Technology, Sudan
| | - M E Abd El-Hack
- Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - A E Taha
- Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Alexandria University, Edfina 22758, Egypt
| | - A A Swelum
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, 11451 Riyadh, Saudi Arabia; Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt.
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Alagawany M, Abd El-Hack ME, Ashour EA, Salah AS, Hussein ESO, Alowaimer AA, Swelum AA, Dhama K. Raw faba bean (Vicia faba) as an alternative protein source in laying hen diets. J APPL POULTRY RES 2019. [DOI: 10.3382/japr/pfz037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Hussein EOS, Suliman GM, Abudabos AM, Alowaimer AN, Ahmed SH, Abd El-Hack ME, Alagawany M, Swelum AA, Tinelli A, Tufarelli V, Laudadio V. Effect of a low-energy and enzyme-supplemented diet on broiler chicken growth, carcass traits and meat quality. Arch Anim Breed 2019; 62:297-304. [PMID: 31807640 PMCID: PMC6852863 DOI: 10.5194/aab-62-297-2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 05/16/2019] [Indexed: 11/25/2022] Open
Abstract
The objective of this
study was to evaluate the impact of a low metabolizable energy (low-ME) diet
supplemented with a multienzyme blend
(KEMZYME®) on the growth performance, carcass
traits and meat quality of chickens. A total of 108 broiler chicks (Ross 308)
were randomly allocated to three experimental groups with six replicates per
treatment and five birds per replicate; the groups were treated as follows: a control diet with no additive
and standard metabolizable energy (ME; 3200 kcal kg-1); a low metabolizable energy (low-ME; 3000 kcal kg-1) diet;
and a low-ME diet + 0.5 g kg-1 diet of enzyme (low-ME–Enz). Live
body weight (LBW) at 43 and 47 d and body weight gain (BWG) during the periods from
38 to 43, 43 to 47 and 33 to 47 d decreased with the low-ME and low-ME–Enz diets in
comparison with the control-diet (p<0.05). The values of the feed
conversion ratio (FCR) were significantly increased with low-ME diets with or
without enzyme at all growing stages. There were no significant differences
among treatments in terms of carcass traits. With the exception of the jejunum
weight, dietary treatments did not affect any digestive tract segments. Meat
hardness decreased with the low-ME–Enz diet compared with the other diets (P=0.039). Meat yellowness of the breast muscle increased (P=0.001) with the
low-ME–Enz diet in comparison with the other treatments at 24 h
post-slaughter. In conclusion, the low-ME diet supplemented with
KEMZYME® did not influence most of
performance parameters and carcass traits of chickens; however, adding
enzymes to the low-ME diet is an effective strategy to improve the meat quality
criteria and small intestine characteristics.
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Affiliation(s)
- Elsayed O S Hussein
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
| | - Gamaleldin M Suliman
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia.,Department of Meat Production, Faculty of Animal Production, University of Khartoum, Khartoum 1334, Sudan
| | - Alaeldein M Abudabos
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
| | - Abdullah N Alowaimer
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
| | - Shamseldein H Ahmed
- Department of Basic Sciences, College of Veterinary Medicine, Sudan University of Science and Technology, Khartoum, Sudan
| | - Mohamed E Abd El-Hack
- Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Mahmoud Alagawany
- Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Ayman A Swelum
- Department of Basic Sciences, College of Veterinary Medicine, Sudan University of Science and Technology, Khartoum, Sudan.,Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Antonella Tinelli
- Department of Veterinary Medicine, Section of Veterinary Pathology and Comparative Oncology, University of Bari "Aldo Moro", Valenzano 70010, Bari, Italy
| | - Vincenzo Tufarelli
- Department of DETO, Section of Veterinary Science and Animal Production, University of Bari "Aldo Moro", Valenzano 70010, Bari, Italy
| | - Vito Laudadio
- Department of DETO, Section of Veterinary Science and Animal Production, University of Bari "Aldo Moro", Valenzano 70010, Bari, Italy
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Raza A, Bashir S, Tabassum R. An update on carbohydrases: growth performance and intestinal health of poultry. Heliyon 2019; 5:e01437. [PMID: 31008387 PMCID: PMC6454264 DOI: 10.1016/j.heliyon.2019.e01437] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 03/04/2019] [Accepted: 03/25/2019] [Indexed: 12/27/2022] Open
Abstract
Poultry is an imperative domesticated livestock species that provides high quality protein and micronutrients as meat and eggs. In poultry production, feed is the single major input constituting 70-75% of total production cost. Feed mainly consists of cereal grains, those provide energy to the birds. However, these grains contain different levels of anti-nutritional factors such as non-starch polysaccharides (NSP). These NSP are indigestible by poultry birds due to the lack of vital endogenous enzymes (carbohydrases) thus increase intestinal viscosity which slower the migration and absorption of nutrients. Consequently, these NSP may also increase the chances for infection by inducing competition within gut microbiota for digestible nutrients. This affects bird's health and increases the production cost. Therefore, there is a need to find efficient and effective solutions for these problems. Carbohydrases supplementation have an important role in poultry diets with high NSP contents. Feed enzymes are being used from years to enhance growth performance and digestibility but have limited activity for selective ingredients. New generation carbohydrases with a board range of activity and stability help to degrade the complex substrates and improve growth performance of poultry. Present review summarizes the updated literature on the use of carbohydrases to improve bird's performance and intestinal health.
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Affiliation(s)
- Ahmad Raza
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Jhang Road, Faisalabad, Pakistan.,Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan
| | - Saira Bashir
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Jhang Road, Faisalabad, Pakistan.,Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan
| | - Romana Tabassum
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Jhang Road, Faisalabad, Pakistan.,Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan
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Alagawany M, Elnesr SS, Farag MR. The role of exogenous enzymes in promoting growth and improving nutrient digestibility in poultry. IRANIAN JOURNAL OF VETERINARY RESEARCH 2018; 19:157-164. [PMID: 30349560 PMCID: PMC6184034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 03/11/2018] [Accepted: 04/11/2018] [Indexed: 06/08/2023]
Abstract
The value of dietary exogenous enzymes in promoting growth and efficiency of feed utilization is well recognized in poultry industry. In a case of high-cost yellow corn, several feed producers are choosing to replace yellow corn with other ingredients that have lower nutritional value like triticale, wheat, barley or sorghum. These crops are rich in non-starch polysaccharides (NSPs), and there is an inverse relationship between the content of NSPs in the feed and its nutritional value. Dietary supplementation of enzymes can enhance the nutritional value of crops containing high contents of soluble NSPs. Numerous studies have shown that supplementation of exogenous enzymes in wheat, barley, sorghum or triticale-based rations can improve performance of poultry to a level compared to that obtained by corn-soya-based rations. Naturally, the gastrointestinal tract of poultry produces enzymes to aid the digestion of nutrients. However, the birds do not have enough enzymes to digest fiber completely and need some commercial exogenous enzymes in the diets to improve the digestion. Enzyme is a biological catalyst composed of proteins, amino acids with minerals and vitamins. The advantages of using commercial enzymes in poultry feeds include improved productive performance and feed utilization, minimized environmental pollution due to reduced nutrient of manure. The present review covers the information on enzyme uses and its applications in poultry production. Furthermore, this article demonstrates that the exogenous enzymes are very important factors in the study of metabolic and physiological mechanisms. Such data will improve our understanding regarding the role of commercial enzymes in poultry feeds.
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Affiliation(s)
- M. Alagawany
- Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Sh. S. Elnesr
- Department of Poultry Production, Faculty of Agriculture, Fayoum University, 63514 Fayoum, Egypt
| | - M. R. Farag
- Forensic Medicine and Toxicology Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
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