151
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Tang HC, Sieo CC, Abdullah N, Chong CW, Gan HM, Mohd Asrore MS, Yong CY, Omar AR, Ho YW. Effects of supplementing freeze-dried Mitsuokella jalaludinii phytase on the growth performance and gut microbial diversity of broiler chickens. J Anim Physiol Anim Nutr (Berl) 2019; 104:116-125. [PMID: 31556187 DOI: 10.1111/jpn.13208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 07/29/2019] [Accepted: 08/23/2019] [Indexed: 11/29/2022]
Abstract
Inclusion of phytase in animal feedstuff is a common practice to enhance nutrients availability. However, little is known about the effects of phytase supplementation on the microbial ecology of the gastrointestinal tract. In this study, freeze-dried Mitsuokella jalaludinii phytase (MJ) was evaluated in a feeding trial with broilers fed a low available phosphorus (aP) diet. A total of 180 male broiler chicks (day-old Cobb) were assigned into three dietary treatments: Control fed with 0.4% (w/w) of available phosphorus (aP); Group T1 fed low aP [0.2% (w/w)] supplemented with MJ; and T2 fed low aP and deactivated MJ. The source of readily available P, dicalcium phosphate (DCP), was removed from low aP diet, whereby additional limestone was provided to replace the amount of Ca normally found in DCP. For each treatment, 4 replicate pens were used, where each pen consisted of 15 animals. The animals' energy intake and caecal bacterial community were monitored weekly for up to 3 weeks. The apparent metabolizable energy (AME) and apparent digestibility of dry matter (ADDM) of broilers fed with different diets were determined. In addition, the caecal microbial diversities of broilers were assessed using high-throughput next-generation sequencing targeting the V3-V4 region of bacterial 16S rRNA. The results showed that broilers fed with T1 diet have better feed conversion ratio (FCR) when compared to the Control (p < .05) and T2 diets (p < .05), demonstrating the efficiency of MJ as a supplement to low aP diet. Nevertheless, MJ did not significantly affect the microbial population and diversity in broilers' caeca, which mainly consists of members from Bacteroidetes, Firmicutes, and Proteobacteria. Regardless, significant variations in the caecal bacterial composition were observed over time, probably due to succession as the broilers aged. This is the first reported study on the effect of MJ on the microbial diversity of broiler's caeca.
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Affiliation(s)
- Hooi Chia Tang
- Institute of Bioscience, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Chin Chin Sieo
- Institute of Bioscience, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.,Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Norhani Abdullah
- Institute of Bioscience, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.,Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Chun Wie Chong
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Selangor, Malaysia
| | - Han Ming Gan
- School of Science, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Selangor, Malaysia
| | | | - Chean Yeah Yong
- Institute of Bioscience, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.,Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Abdul Rahman Omar
- Institute of Bioscience, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Yin Wan Ho
- Institute of Bioscience, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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152
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153
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Particle size and feed form in broiler diets: impact on gastrointestinal tract development and gut health. WORLD POULTRY SCI J 2019. [DOI: 10.1017/s0043933916000222] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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154
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Enhancement of microbial nitrification to reduce ammonia emission from poultry manure: a review. WORLD POULTRY SCI J 2019. [DOI: 10.1017/s0043933914000890] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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155
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156
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Phytate and microbial phytase: implications for endogenous nitrogen losses and nutrient availability. WORLD POULTRY SCI J 2019. [DOI: 10.1017/s0043933909000294] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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157
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158
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Enhancing the nutritional value of soybeans for poultry through supplementation with new-generation feed enzymes. WORLD POULTRY SCI J 2019. [DOI: 10.1017/s0043933916000271] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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159
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The effect of phytase and carbohydrase on ileal amino acid digestibility in monogastric diets: complimentary mode of action? WORLD POULTRY SCI J 2019. [DOI: 10.1017/s0043933909000427] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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160
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161
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162
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163
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Habibollahi M, Abousadi MA, Nakhaee P. The Effect of Phytase on Production Performance, Egg Quality, Calcium and Phosphorus Excretion, and Fatty Acids and Cholesterol Concentration in Hy-Line Layers Fed Diets Containing Rice Bran. J APPL POULTRY RES 2019. [DOI: 10.3382/japr/pfz020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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164
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Cowieson A, Smith A, Sorbara J, Pappenberger G, Olukosi O. Efficacy of a Mono-Component Exogenous Protease in the Presence of a High Concentration of Exogenous Phytase on Growth Performance of Broiler Chickens. J APPL POULTRY RES 2019. [DOI: 10.3382/japr/pfz014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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165
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Tambo Tene S, Mathilde Klang J, Ndomou Houketchang SC, Kohole Foffe HA, Womeni HM. Application of amylase rich flours of corn and sweet potato to the reduction of consistency of cassava and corn gruels. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.14058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stephano Tambo Tene
- Research Unit of Biochemistry, Food Sciences and Nutrition, Faculty of Sciences, Department of Biochemistry University of Dschang Dschang Cameroon
| | - Julie Mathilde Klang
- Research Unit of Biochemistry, Food Sciences and Nutrition, Faculty of Sciences, Department of Biochemistry University of Dschang Dschang Cameroon
| | - Serge Cyrille Ndomou Houketchang
- Research Unit of Biochemistry, Food Sciences and Nutrition, Faculty of Sciences, Department of Biochemistry University of Dschang Dschang Cameroon
| | - Hermann Arantes Kohole Foffe
- Research Unit of Biochemistry, Food Sciences and Nutrition, Faculty of Sciences, Department of Biochemistry University of Dschang Dschang Cameroon
| | - Hilaire Macaire Womeni
- Research Unit of Biochemistry, Food Sciences and Nutrition, Faculty of Sciences, Department of Biochemistry University of Dschang Dschang Cameroon
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166
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dos Santos TS, Denadai JC, Sartori MMP, Júnior JMP, Aoyagi MM, Rezende JCR, Serpa PG, Muro EM, de Santana-Eich MR, Pasquali GAM, Dornelas LC, Netto RGF, Zanetti LH, Pezzato AC, Sartori JR. Performance and bone quality of broiler chicken fed a diet with reduced nonphytate phosphorus with bacterial phytases. CANADIAN JOURNAL OF ANIMAL SCIENCE 2019. [DOI: 10.1139/cjas-2018-0158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Tatiane Souza dos Santos
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - Juliana Célia Denadai
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - Maria Márcia Pereira Sartori
- São Paulo State University (UNESP), School of Agriculture, Department of Crop Science, Botucatu, SP CEP 18610-307, Brazil
| | - João Martins Pizauro Júnior
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Department of Technology, Jaboticabal, SP CEP 14884-900, Brazil
| | - Mônica Megumi Aoyagi
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - Juliana Cristina Ramos Rezende
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - Paola Gentile Serpa
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - Everton Moreno Muro
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - Mayara Rodrigues de Santana-Eich
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - Guilherme Aguiar Mateus Pasquali
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - Lívia Carrasco Dornelas
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - Raimundo Gonçalves Ferreira Netto
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - Leonardo Henrique Zanetti
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - Antonio Celso Pezzato
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
| | - José Roberto Sartori
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Department of Breeding and Animal Nutrition, Botucatu, SP CEP 18618-681, Brazil
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167
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Chang'a EP, Abdallh ME, Ahiwe EU, Al-Qahtani M, Mbaga S, Iji PA. Energy utilization, nutrient digestibility and bone quality of broiler chickens fed Tanzania-type diets in different forms with enzymes. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2019; 61:192-203. [PMID: 31452906 PMCID: PMC6686144 DOI: 10.5187/jast.2019.61.4.192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/24/2019] [Accepted: 06/11/2019] [Indexed: 11/20/2022]
Abstract
A study was conducted to determine the influence of feed form and microbial enzyme supplementation on energy utilization, bone quality, and amino acid and mineral digestibility of broiler chickens. Four hundred and eighty Ross 308, day-old broiler chickens were randomly assigned to eight diets formulated from commonly used ingredients in Tanzania. A 2 (pellet or mash) × 4 (control, Axtra XB, Quantum Blue (QB) and Axtra XB + QB enzyme) factorial array in a completely randomized design having six replicates per treatment (10 birds per replicate) was used. Birds were raised in climate-controlled rooms in a 3-phase; starter (0-10 days), grower (11-24 days) and finisher (25-35 days). Apparent metabolizable energy (AME), metabolizable energy intake, net energy of production, energy retained as protein (REp), and efficiency of metabolizable energy use for energy and protein retention were higher (p < 0.05) in birds fed pelleted diets. The AME and REp was higher (p < 0.05) with enzyme supplementation. Ash content, weight, length, width and breaking strength of tibia bones were highest (p < 0.05) in birds on pelleted diets. Tibia bone traits were improved (p < 0.05) when enzymes were included, particularly in a combination of QB and Axtra XB. However, potassium, magnesium, and zinc contents were highest (p < 0.05) when QB was supplemented. Digestibility of all amino acids was higher (p < 0.05) in birds supplied with pellets and with enzyme supplementation for most amino acids, except for serine. There was a positive interaction (p < 0.05) between feed form and enzymes on lysine and phenylalanine digestibility. Digestibility of Ca, P, K, S, Zn, and Fe was higher (p < 0.05) in birds fed pelleted diets, while those on mashed diets had higher (p < 0.05) digestibility of Cu and B. The digestibility of P, K, and Zn was highest (p < 0.001) when QB was added, while Ca, P, S, and B digestibility was highest when a combination of Axtra XB + QB was applied. Pelleted diets with or without enzymes improved energy utilization, digestibility of amino acids, and minerals, and increased bone strength in broiler chickens.
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Affiliation(s)
- Edwin Peter Chang'a
- Department of Animal Science, School of Environmental and Rural Sciences, University of New England, Armidale, NSW 2351, Australia.,Tanzania Livestock Research Institute, P.O. Box 352, TALIRI Mabuki, Mwanza, Tanzania
| | - Medani Eldow Abdallh
- Department of Animal Science, School of Environmental and Rural Sciences, University of New England, Armidale, NSW 2351, Australia.,Department of Poultry Production, University of Khartoum, Khartoum 13314, Sudan
| | - Emmanuel Uchenna Ahiwe
- Department of Animal Science, School of Environmental and Rural Sciences, University of New England, Armidale, NSW 2351, Australia.,Department of Animal Science and Technology, Federal University of Technology, Owerri, Imo State 1526, Nigeria
| | - Mohammed Al-Qahtani
- Department of Animal Science, School of Environmental and Rural Sciences, University of New England, Armidale, NSW 2351, Australia
| | - Said Mbaga
- Sokoine University of Agriculture, P.O. Box 3004, Morogoro, Tanzania
| | - Paul Ade Iji
- Department of Animal Science, School of Environmental and Rural Sciences, University of New England, Armidale, NSW 2351, Australia.,College of Agriculture, Fisheries & Forestry, Fiji National University, P.O. Box-1544, Nausori, Fiji
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168
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Babatunde OO, Cowieson AJ, Wilson JW, Adeola O. Influence of age and duration of feeding low-phosphorus diet on phytase efficacy in broiler chickens during the starter phase. Poult Sci 2019; 98:2588-2597. [PMID: 30753622 DOI: 10.3382/ps/pez014] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 01/29/2019] [Indexed: 11/20/2022] Open
Abstract
A total of 1,408 male broiler chickens were used to evaluate the impact of age and duration of feeding low-phosphorus (P) diet on the efficacy of phytase using growth performance, nutrient utilization, tibia ash, and plasma indices. Diets were formulated with 2 non-phytate P (nPP) concentrations (i.e., 0.20 and 0.40%) and 2 phytase concentrations (i.e., 1,000 and 2,000 FTU/kg) added to the 0.20% nPP diet. Four dietary treatments with 8 replicate cages each were fed to broiler chicks at different ages and for different duration. Specifically, these were days 6 to 8 (12 birds per replicate), 12 to 14, 9 to 14, 20 to 22, or 6 to 22 (8 birds per replicate). Parameters were measured on the last day of each period. Duration of feeding effect was examined by comparing responses of birds fed for 2 or 5 D at day 14 and for 2 or 16 D at day 22; age effect was determined by comparing responses of birds fed for 2 D at age 8, 14 and 22 D post-hatching. Body weight gain and gain-to-feed ratio were increased (P < 0.01) in birds fed diets supplemented with phytase; however, an increase in duration of feeding improved (P < 0.01) feed efficiency with birds fed for 16 D performing better than birds fed for 2 D at day 22. In addition, phytase supplementation improved (P < 0.01) apparent P and calcium digestibility and retention, but the age effect on phytase efficacy was more apparent at day 14 and the duration of feeding effect was evident in birds fed for 2 D due to the increased levels of mineral utilization at that age/duration of feeding as compared with the other groups. The results of this study show that phytase efficacy was at optimum in birds fed low-P diet for 2 D at day 14. This period can be recommended for further bioefficacy studies of phytase.
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Affiliation(s)
- O O Babatunde
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907
| | - A J Cowieson
- DSM Nutritional Products, Wurmisweg 576, Kaiseraugst 4303, Switzerland
| | - J W Wilson
- DSM Nutritional Products, Wurmisweg 576, Kaiseraugst 4303, Switzerland
| | - O Adeola
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907
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169
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Rollán GC, Gerez CL, LeBlanc JG. Lactic Fermentation as a Strategy to Improve the Nutritional and Functional Values of Pseudocereals. Front Nutr 2019; 6:98. [PMID: 31334241 PMCID: PMC6617224 DOI: 10.3389/fnut.2019.00098] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 06/14/2019] [Indexed: 12/15/2022] Open
Abstract
One of the greatest challenges is to reduce malnutrition worldwide while promoting sustainable agricultural and food systems. This is a daunting task due to the constant growth of the population and the increasing demands by consumers for functional foods with higher nutritional values. Cereal grains are the most important dietary energy source globally; wheat, rice, and maize currently provide about half of the dietary energy source of humankind. In addition, the increase of celiac patients worldwide has motivated the development of gluten-free foods using alternative flour types to wheat such as rice, corn, cassava, soybean, and pseudocereals (amaranth, quinoa, and buckwheat). Amaranth and quinoa have been cultivated since ancient times and were two of the major crops of the Pre-Colombian cultures in Latin- America. In recent years and due to their well-known high nutritional value and potential health benefits, these pseudocereals have received much attention as ideal candidates for gluten-free products. The importance of exploiting these grains for the elaboration of healthy and nutritious foods has forced food producers to develop novel adequate strategies for their processing. Fermentation is one of the most antique and economical methods of producing and preserving foods and can be easily employed for cereal processing. The nutritional and functional quality of pseudocereals can be improved by fermentation using Lactic Acid Bacteria (LAB). This review provides an overview on pseudocereal fermentation by LAB emphasizing the capacity of these bacteria to decrease antinutritional factors such as phytic acid, increase the functional value of phytochemicals such as phenolic compounds, and produce nutritional ingredients such as B-group vitamins. The numerous beneficial effects of lactic fermentation of pseudocereals can be exploited to design novel and healthier foods or grain ingredients destined to general population and especially to patients with coeliac disease.
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Affiliation(s)
- Graciela C. Rollán
- Centro de Referencia para Lactobacilos (CERELA) - CONICET, San Miguel de Tucumán, Argentina
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170
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Biochemical Characteristics of Microbial Enzymes and Their Significance from Industrial Perspectives. Mol Biotechnol 2019; 61:579-601. [DOI: 10.1007/s12033-019-00187-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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171
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Effects of steam conditioning temperatures on commercial phytases and subsequent broiler performance and tibia mineralization. APPLIED ANIMAL SCIENCE 2019. [DOI: 10.15232/aas.2019-01845] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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172
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Dersjant-Li Y, Kwakernaak C. Comparative effects of two phytases versus increasing the inorganic phosphorus content of the diet, on nutrient and amino acid digestibility in boilers. Anim Feed Sci Technol 2019. [DOI: 10.1016/j.anifeedsci.2019.05.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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173
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Díaz-Alonso J, Gómez-Rosales S, Angeles M, Ávila-González E, López-Coello C. Effects of the Level and Relationship of Calcium and Available Phosphorus on the Growth and Tibia Mineralization of Broiler Starter Chickens. J APPL POULTRY RES 2019. [DOI: 10.3382/japr/pfy077] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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174
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Fernandes J, Horn D, Ronconi E, Buzim R, Lima F, Pazdiora D. Effects of Phytase Superdosing on Digestibility and Bone Integrity of Broilers. J APPL POULTRY RES 2019. [DOI: 10.3382/japr/pfz001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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175
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Kalantar M, Schreurs NM, Raza SHA, Khan R, Ahmed JZ, Yaghobfar A, Shah MA, Kalantar MH, Hosseini SM, Rahman SU. Effect of different cereal-based diets supplemented with multi-enzyme blend on growth performance villus structure and gene expression (SGLT1, GLUT2, PepT1 and MUC2) in the small intestine of broiler chickens. GENE REPORTS 2019. [DOI: 10.1016/j.genrep.2019.100376] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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176
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Dersjant-Li Y, Dusel G. Increasing the dosing of a Buttiauxella phytase improves phytate degradation, mineral, energy, and amino acid digestibility in weaned pigs fed a complex diet based on wheat, corn, soybean meal, barley, and rapeseed meal1. J Anim Sci 2019; 97:2524-2533. [PMID: 31056701 PMCID: PMC6541801 DOI: 10.1093/jas/skz151] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 04/30/2019] [Indexed: 11/13/2022] Open
Abstract
This study evaluated the effects of increasing the dose of a 6-phytase from Buttiauxella on phytate degradation, mineral, energy, and AA digestibility in weaned pigs fed complex diets based on wheat, corn, soybean meal, barley, and rapeseed meal. A negative control (NC) diet containing no added inorganic phosphorus (P) and a reduction of 0.1% calcium (Ca) and 36 kcal/kg ME was supplemented with Buttiauxella phytase at 0, 250, 500, 1,000, or 2,000 FTU/kg diet and tested against a nutritionally adequate, positive control (PC) diet. One phytase units (FTU) is the amount of enzyme that liberates 1 micromole of inorganic phosphate per minute from a sodium phytate substrate at pH 5.5 and 37 °C. Barrows (Topigs × Pietrian; initial mean body weight 19.3 kg) were housed individually in metabolic crates and fed the test diets in mash form via 2 equal meals per day for 9 d (fed at 2.5 times the maintenance energy requirement), with 8 replicate pigs per treatment, in 2 experimental runs (total n = 48). After a 3-d adaptation period, urine and feces were collected over 5 d for measurements of apparent total tract digestibility (ATTD) and retention of nutrients. On day 9, pigs were euthanized and ileal digesta collected for measurements of apparent ileal digestibility (AID) of nutrients. Phytase improved (P < 0.05) digestibility of all measured AA except Trp (P < 0.1), and AID P, nitrogen, phytate, ATTD P, Ca versus NC. Increasing phytase dose from 0 (NC) to 2,000 FTU/kg increased AID Lys, Cys, Thr, Val, Ile, Leu, mean AA, P, N, phytate, ATTD P, N, Na, energy, ME, P retention (g/d), and reduced P excretion (g/d) in a linear or exponential manner (P < 0.05). Phytase at 2,000 FTU/kg improved AA digestibility by between +3.1 percentage points (Trp) and +8.8 percentage points (Cys) versus NC (average +6.3 percentage points) (P < 0.05). Phytase inclusion at 2,000 FTU/kg reduced P excretion (g/d) by 57% versus PC (P < 0.05). In conclusion, increasing Buttiauxella phytase in the range of 0 to 2,000 FTU/kg increased phytate degradation, improved AA and P digestibility, and reduced P excretion in weaned pigs fed complex diets.
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Affiliation(s)
- Yueming Dersjant-Li
- DuPont Animal Nutrition, DuPont Nutrition & Biosciences, Leiden, The Netherlands
| | - Georg Dusel
- University of Applied Sciences Bingen, FB1 – Life Sciences, Bingen am Rhein, Germany
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177
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Effects of Phytase Supplementation to Diets with or without Zinc Addition on Growth Performance and Zinc Utilization of White Pekin Ducks. Animals (Basel) 2019; 9:ani9050280. [PMID: 31130648 PMCID: PMC6562945 DOI: 10.3390/ani9050280] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/13/2019] [Accepted: 05/21/2019] [Indexed: 11/16/2022] Open
Abstract
The effect of phytase and inorganic Zn supplementation was studied in 180 male White Pekin ducks (WPD) from 1 to 56 days of age. The birds were divided into four groups fed the same basal diet (containing 26 ppm of Zn from raw materials): the control group did not receive Zn supplementation; the second group was supplemented with 30 ppm of Zn oxide; and the third and fourth groups were fed the control and the 30 ppm diets, respectively, both supplemented with 500 U of E. coli phytase. Each group contained five replicates of nine ducks. The body weight and feed intake were recorded at 1, 28 and 56 days of age. At 56 days of age, five birds/group were used to measure feed digestibility and five other birds/group were slaughtered. Zn at 30 ppm increased the body weight gain (BWG, p < 0.01) and feed intake (p < 0.05) and improved the feed conversion (FCR, p < 0.05) of the growing ducks. The Zn retention and Zn level in the excreta increased (p < 0.01) due to Zn supplementation. The addition of phytase improved BWG (p < 0.01) and FCR (p < 0.05) of growing ducks. The use of phytase reduced (p < 0.01) the level of Zn in duck excreta. Phytase supplementation to the basal diet at 30 ppm seems to be adequate to meet Zn requirements for ducks without further Zn additions.
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178
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Walk CL, Rao SVR. High doses of phytase on growth performance and apparent ileal amino acid digestibility of broilers fed diets with graded concentrations of digestible lysine. J Anim Sci 2019; 97:698-713. [PMID: 30445596 DOI: 10.1093/jas/sky441] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 11/13/2018] [Indexed: 11/12/2022] Open
Abstract
Two experiments of the same design were conducted to determine the influence of phytase on performance and apparent ileal digestibility (AID) of amino acids in broilers fed graded concentrations of digestible lysine (dgLys). Cobb 400, male broilers were allocated to 1 of 16 diets consisting of 4 basal diets formulated at 80, 88, 96, or 104% of the Cobb 400 dgLys requirements for each feeding phase. Phytase was included in each basal diet at 0, 750, 1,500, or 3,000 phytase units (FTU)/kg. In Exp. 1, 33 birds/pen from hatch to day 42 were fed a 2-phase feeding program with 12 replicate pens/diet. In Exp. 2, there were 25 birds/pen from hatch to day 21 and 8 replicate pens/diet. Data were analyzed as a 4 × 4 factorial and means separated using orthogonal contrasts. In Exp. 1, feed intake (FI) increased (quadratic, P < 0.05) as dgLys increased in the diet. Body weight gain (BWG) increased (quadratic, P < 0.05) as dgLys concentration or phytase dose increased in the diet. As phytase dose increased in the diet, feed conversion ratio (FCR) was improved in a linear or quadratic (P < 0.05) manner depending on the dgLys concentration of the diet (dgLys × phytase, P<0.05). In Exp. 2, FI linearly (P < 0.05) increased as dgLys increased in the diet. Increasing the concentration of dgLys or phytase in the diet increased (quadratic, P < 0.05) BWG and improved (quadratic, P < 0.05) FCR. The AID of most amino acids was influenced by a dgLys × phytase interaction (P < 0.05), except threonine, valine, tryptophan, serine, cysteine, or leucine (linear or quadratic effect of phytase, P < 0.05), where phytase improved the AID in birds fed diets containing 80, 88, or 96% of the dgLys requirement, but not birds fed 104%. The predicted dgLys requirement to maximize performance, carcass, and digestible lysine intake was 97.6 to ≥ 104%. The predicted dose of phytase to maximize BWG or FCR was between 1,990 and 2,308 FTU/kg, regardless of the dgLys concentration in the diet. The predicted dose of phytase to maximize carcass weight was between 1,527 and 2,658 FTU/kg of diet and to maximize breast weight was 0 to ≥ 3,000 FTU/kg diet, depending on the dgLys concentration in the diet. In conclusion, optimal performance in the absence of phytase could be achieved at much lower levels of lysine in the presence of phytase.
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179
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Mrudula Vasudevan U, Jaiswal AK, Krishna S, Pandey A. Thermostable phytase in feed and fuel industries. BIORESOURCE TECHNOLOGY 2019; 278:400-407. [PMID: 30709763 DOI: 10.1016/j.biortech.2019.01.065] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 01/14/2019] [Accepted: 01/17/2019] [Indexed: 06/09/2023]
Abstract
Phytase with wide ranging biochemical properties has long been utilized in a multitude of industries, even so, thermostability plays a crucial factor in choosing the right phytase in a few of the sectors. Mesophilic phytases are not considered to be a viable option in the feed industry owing to its limited stability in the required feed processing temperature. In the recent past, inclusion of thermostable phytase in fuel ethanol production from starch based raw material has been demonstrated with economic benefits. Therefore, considerable emphasis has been placed on using complementary approaches such as mining of extremophilic microbial wealth, encapsulation and using enzyme engineering for obtaining stable phytase variants. This article means to give an insight on role of thermostable phytases in feed and fuel industries and methods for its development, highlighting molecular determinants of thermostability.
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Affiliation(s)
- Ushasree Mrudula Vasudevan
- Biotechnology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, Kerala, India.
| | - Amit K Jaiswal
- School of Food Science and Environmental Health, College of Sciences and Health, Technological University Dublin, Cathal Brugha Street, Dublin 1, Ireland
| | - Shyam Krishna
- MIMS Research Foundation, Calicut 673 007, Kerala, India
| | - Ashok Pandey
- Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow 226 001, India
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180
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Abbasi F, Fakhur-Un-Nisa T, Liu J, Luo X, Abbasi IHR. Low digestibility of phytate phosphorus, their impacts on the environment, and phytase opportunity in the poultry industry. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:9469-9479. [PMID: 30788700 DOI: 10.1007/s11356-018-4000-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Accepted: 12/13/2018] [Indexed: 06/09/2023]
Abstract
Phosphorus is an essential macro-mineral nutrient for poultry, needed for the body growth, development of bones, genomic function, good quality flesh, and eggs production. The imbalance of organic phosphorus sources in the diet mostly affect the phosphorus digestibility, reduces the poultry performance and health, and increases the environmental pollution burden. A study was reviewed to estimate the low phytate phosphorus digestibility of ingredients in poultry diet and their impacts on environmental ecosystem and opportunity of phytase supplementation. Plant ingredients mostly used in poultry diets are rich in phytate phosphorus. The phytate phosphorus digestibility and utilization is low in the gut of birds which leads to decrease other nutrients digestibility and increase excessive excretion of phosphorus with additional nutrients in the manure. When that manure applied to the lands containing excessive residual phosphorus and additional nutrients which pollute soil, groundwater disturbed the entire ecosystem. This issue is developed by poultry due to lack of digestive enzyme phytase which promotes the phytate phosphorus during digestion and reduces the excessive losses of phosphorus in excreta. To overcome this matter, the addition of mostly exogenous phospho-hydrolytic phytase enzymes in the diet, i.e. Escherichia coli, Peniophora lycii, Aspergillus niger, and Ficum, are the possible ways to increase the digestibility and utilization of phytate phosphorus and promote the stepwise release of phosphorus from phytate and significantly decrease phosphorus excretion. The aim of this review is to highlight the role of phytase supplementation in the poultry feeding, improvement of phytate phosphorus digestibility with performance, and reduction of phosphorus pollution from the environment.
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Affiliation(s)
- Farzana Abbasi
- Department of Environmental Science and Engineering, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
| | | | - Jingbo Liu
- Department of Environmental Science and Engineering, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
| | - Xuegang Luo
- Department of Environmental Science and Engineering, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China.
| | - Imtiaz Hussain Raja Abbasi
- Department of Animal Nutrition, Faculty of Animal Production and Technology, Cholistan University of Veterinary and Animal Sciences, CUVAS, Bahawalpur, Punjab, Pakistan.
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181
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Verardi A, Schneider A, Mayer J, Yuri F, Oliveira V, Gewehr C. True phosphorus digestibility and total endogenous phosphorus losses associated with canola meal for brown laying hens 17 and 32 weeks old. Livest Sci 2019. [DOI: 10.1016/j.livsci.2019.02.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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182
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Akter M, Graham H, Iji PA. Response of broiler chickens to diets containing different levels of sodium with or without microbial phytase supplementation. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2019; 61:87-97. [PMID: 31333866 PMCID: PMC6582932 DOI: 10.5187/jast.2019.61.2.87] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/12/2019] [Accepted: 03/15/2019] [Indexed: 11/20/2022]
Abstract
Phytate induced excessive mineral excretion through poultry litter leads to poor
performance and environmental pollution. Exogenous microbial phytase
supplementation to poultry diets reduce the environmental excretion of nutrient
and improve bird’s performance. However, excessive dietary sodium (Na)
level may hinder the phytase-mediated phytate hydrolysis and negate the
beneficial effects of phytase. Therefore, this experiment was conducted to
investigate the effects of different concentration dietary Na on phytase
activity and subsequent impact on broiler performance, bone mineralisation and
nutrient utilisation. In this study, six experimental diets, consisting of three
different levels of Na (1.5, 2.5, or 3.5 g/kg) and two levels of microbial
phytase (0 or 500 U/kg) were formulated by using 3 × 2 factorial design.
The six experimental diets were offered to 360 day-old Ross 306 male chicks for
35 days, where, each experimental diet consisted of 6 replicates groups with 10
birds. Along with growth performance, nutrient utilization, intestinal enzyme
activity, dry matter (DM) content of litter and mineral status in bone were
analysed. Dietary Na and phytase had no effect on bode weight gain and feed
intake. Birds on the low Na diet showed higher (p <
0.05) feed conversion ratio (FCR) than the mid-Na diets. High dietary Na
adversely affected (p < 0.001) excreta DM content.
Phytase supplementation to the high-Na diet increased (p
< 0.01) the litter ammonia content. High dietary Na with phytase
supplementation improved (Na × phytase, p < 0.05)
the AME value and ileal digestibility of Ca and Mg. The total tract retention of
Ca, P, and Mg was reduced with high Na diet, which was counteracted by phytase
supplementation (Na × phytase, p < 0.001). The
diets containing mid-level of Na improved (p < 0.001)
the function of Na-K-ATPase and Mg-ATPase in the jejunum. The overall results
indicate that high dietary Na did not affect phytase activity but influenced the
nutrient utilization of birds, which was not reflected in bird overall
performance.
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Affiliation(s)
- Marjina Akter
- Dairy and Poultry Science Department, Faculty of Veterinary Medicine, Chittagong Veterinary and Animal Sciences University, Khulshi-4225, Chittagong, Bangladesh
| | - Hadden Graham
- AB Vista, 3 Woodstock Court, Marlborough Wiltshire SN8 4AN, UK
| | - Paul Ade Iji
- School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia.,College of Agriculture, Fisheries and Forestry, Fiji National University, P.O. Box-1544, Nausori, Fiji
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183
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Leyva-Jimenez H, Alsadwi AM, Gardner K, Voltura E, Bailey CA. Evaluation of high dietary phytase supplementation on performance, bone mineralization, and apparent ileal digestible energy of growing broilers. Poult Sci 2019; 98:811-819. [PMID: 30169714 DOI: 10.3382/ps/pey389] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 08/02/2018] [Indexed: 11/20/2022] Open
Abstract
The present study was conducted to evaluate four commercially available phytase sources supplemented at regular (R) and super-dose (S) levels on live performance, bone mineralization, and apparent ileal digestible energy. Broiler chickens were allocated in stainless steel battery brooders (six birds per cage and eight pen replicates per treatment). A basal diet formulated to contain 0.2% non-phytate phosphorus (NPP) and 0.7% Ca was subdivided to create 11 dietary treatments: (1) basal diet was kept as the negative control (NC); (2) NC + limestone and monoclacium phosphate to create positive controls 1 and 2 formulated to yield 0.3% and 0.4% NPP; (3) NC + phytase A (250 and 1,500 FTU/kg); (4) NC + phytase B (500 and 1,500 FTU/kg); (5) NC + phytase C (500 and 1,000 FTU/kg); (6) NC + phytase D (1,000 and 2,000 FYT/kg). Performance was evaluated on d 7, 14, and 22. Tibia bone ash, tibia breaking strength, bone mineral content, and bone mineral density were evaluated on d 22. Apparent energy digestibility was evaluated on d 24. At d 7, phytases A and C supplemented at S level improved (P < 0.05) body weight and weight gain when compared to the NC. At d 14 and 22, all phytase sources improved (P < 0.05) body weight, weight gain, and bone mineralization when compared to the chicks under the NC diet. Overall, phytase supplementation at S level improved 17% apparent ileal digestibility at 24 d. Throughout the grow out period, phytase super-dose yield (P < 0.05) better performance, bone characteristics, and energy digestibility than the regular dietary level. In conclusion, all phytase sources were able to compensate the phosphorus deficiency and promote performance and bone mineralization. High levels of phytase showed a higher response when compared to the lower levels of supplementation.
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Affiliation(s)
- Hector Leyva-Jimenez
- Department of Poultry Science, Texas A&M University System, College Station, TX 77843-2472, USA
| | - Akhil M Alsadwi
- Department of Poultry Science, Texas A&M University System, College Station, TX 77843-2472, USA
| | - Kimberly Gardner
- Department of Poultry Science, Texas A&M University System, College Station, TX 77843-2472, USA
| | - Elise Voltura
- Department of Poultry Science, Texas A&M University System, College Station, TX 77843-2472, USA
| | - Christopher A Bailey
- Department of Poultry Science, Texas A&M University System, College Station, TX 77843-2472, USA
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184
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Sanchez J, Thanabalan A, Khanal T, Patterson R, Slominski BA, Kiarie E. Growth performance, gastrointestinal weight, microbial metabolites and apparent retention of components in broiler chickens fed up to 11% rice bran in a corn-soybean meal diet without or with a multi-enzyme supplement. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2019; 5:41-48. [PMID: 30899808 PMCID: PMC6407072 DOI: 10.1016/j.aninu.2018.12.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 12/12/2018] [Accepted: 12/19/2018] [Indexed: 11/30/2022]
Abstract
We investigated the effects of adding up to 11% rice bran (RB) in corn-soybean meal diets fed to broiler chickens without or with a multi-enzyme supplement (MES). The MES supplied xylanase, β-glucanase, invertase, protease, cellulase, α-amylase and mannanase with targeted activity of 2,500, 300, 700, 10,000, 1,200, 24,000, and 20 U/kg of feed, respectively. The study used a two-phase feeding program (starter, d 0 to 24; finisher, d 25 to 35) with RB added at 5% and 11%, respectively creating 4 diets in each phase. Diets were iso-caloric and iso-nitrogenous and contained phytase (500 FTU/kg) and TiO2 as a digestibility marker. Three hundred and sixty d-old male Ross 708 broiler chicks were placed in cages based on BW (15 birds/cage) and allocated to 4 diets (n = 6). Birds had free access to feed and water. Body weight and feed intake were recorded. Excreta samples were collected 3 d prior to the end of each phase for apparent retention (AR) of components. Samples of birds were sacrificed on d 24 and 35 for gut weight and ceca digesta for organic acid content. There was no interaction (P > 0.10) between RB and MES on BWG and FCR in starter or finisher phase. In finisher phase, birds fed MES had better BWG (961 versus 858 g) and FCR (1.69 versus 1.86) than birds fed non-MES diets (P < 0.01). Feeding RB reduced (P = 0.02) BWG in finisher phase resulting in lower d 35 BW. Birds fed RB had higher (P ≤ 0.01) gizzard weight on d 24 and 35 than non-RB birds. An interaction (P ≤ 0.01) between RB and MES on concentrations of propionic and iso-butyric acids in ceca digesta showed that MES reduced these acids in non-RB diet. The AR of gross energy was higher (P < 0.02) for MES versus non-MES birds in starter and finisher phases. In conclusion, independently, RB increased gizzard weight and reduced final BW whereas MES improved growth and energy utilization.
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Affiliation(s)
- Juan Sanchez
- Department of Animal Biosciences, University of Guelph, Guelph ON N1G 2W1, Canada
| | - Aizwarya Thanabalan
- Department of Animal Biosciences, University of Guelph, Guelph ON N1G 2W1, Canada
| | - Tanka Khanal
- Department of Animal Biosciences, University of Guelph, Guelph ON N1G 2W1, Canada
| | - Rob Patterson
- Canadian Bio-Systems Inc., Calgary AB T2C 0J7, Canada
| | - Bogdan A. Slominski
- Department of Animal Science, University of Manitoba, Winnipeg MB R3T 2N2, Canada
| | - Elijah Kiarie
- Department of Animal Biosciences, University of Guelph, Guelph ON N1G 2W1, Canada
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185
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Pirgozliev V, Brearley C, Rose S, Mansbridge S. Manipulation of plasma myo-inositol in broiler chickens: effect on growth performance, dietary energy, nutrient availability, and hepatic function. Poult Sci 2019; 98:260-268. [DOI: 10.3382/ps/pey341] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 08/20/2018] [Indexed: 01/10/2023] Open
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186
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Moss AF, Liu SY, Selle PH. Feeding whole grain and phytase to meat chickens: recent Australian experience. ANIMAL PRODUCTION SCIENCE 2019. [DOI: 10.1071/an19283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Both whole-grain feeding and exogenous phytases have been widely accepted by the chicken-meat industry, so any interactions that arise from this combined supplementation are potentially important. Nevertheless, there is a paucity of research evaluating the effect of phytase under whole-grain feeding regimens. Whole-grain feeding increases relative gizzard weights and gizzard functionality. However, the gizzard is the primary site of phytate degradation by phytase, so this combined supplementation should enhance phytase efficacy. Moreover, there has been recent progress towards understanding the influence of whole-grain feeding and exogenous phytase on broiler performance, which is discussed. Further research is warranted to establish a whole-grain feeding regimen that generates robust gizzard responses so as to enhance feed efficiency, energy utilisation and phytase efficacy.
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187
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Jarosz Ł, Marek A, Grądzki Z, Laskowska E, Kwiecień M. Effect of Zinc Sulfate and Zinc Glycine Chelate on Concentrations of Acute Phase Proteins in Chicken Serum and Liver Tissue. Biol Trace Elem Res 2019; 187:258-272. [PMID: 29675569 PMCID: PMC6314988 DOI: 10.1007/s12011-018-1346-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 04/10/2018] [Indexed: 01/13/2023]
Abstract
The aim of the study was to determine how inorganic and organic forms of zinc affect the concentrations of C-reactive protein (CRP), serum amyloid A (SAA), alpha-1-acid glycoprotein (α-1-AGP), haptoglobin (Hp), and transferrin (TRF) in the blood and liver tissue of 450 1-day-old Ross 308 chicken. Four experimental groups received one the following: inorganic zinc (ZnSO4), a zinc phytase enzyme supplement (ZnSO4-F), organic zinc in combination with glycine (Zn-Gly), or organic zinc supplemented with phytase (Zn-Gly-F). The chicken serum and liver homogenates were assayed using an ELISA kit. The results of the study showed statistically significantly higher serum and liver concentration of SAA in the group of birds that received zinc sulfate in comparison to the group of birds receiving zinc in organic form. A statistically significantly higher serum concentration of CRP and α-1-AGP was also noted in the group receiving zinc sulfate as compared to the Zn-Gly group. Comparison of the serum concentration of TRF between the supplemented groups showed a statistically significant increase in this parameter in the Zn-Gly-F group as compared to the ZSO4-F group. The increase in the serum concentration of Hp in all groups in comparison to the control may indicate stimulation of local immune mechanisms. The results of this study showed an increase in the concentrations of APPs such as AGP and TRF following the administration of zinc glycine chelates, which may demonstrate their effect on metabolic processes in the liver and on immunocompetent cells that regulate the intensity of the immune response.
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Affiliation(s)
- Łukasz Jarosz
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Głęboka 30, 20-612 Lublin, Poland
| | - Agnieszka Marek
- Sub-Department of Preventive Veterinary and Avian Diseases, Institute of Biological Bases of Animal Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Głęboka 30, 20-612 Lublin, Poland
| | - Zbigniew Grądzki
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Głęboka 30, 20-612 Lublin, Poland
| | - Ewa Laskowska
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Głęboka 30, 20-612 Lublin, Poland
| | - Małgorzata Kwiecień
- Faculty of Biology and Animal Breeding, Institute of Animal Nutrition and Bromatology, Department of Animal Nutrition, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland
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188
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Trairatapiwan T, Ruangpanit Y, Songserm O, Attamangkune S. Determination of true ileal phosphorus digestibility of maize and soybean meal and true ileal calcium digestibility of soybean meal for broiler chickens. ANIMAL PRODUCTION SCIENCE 2019. [DOI: 10.1071/an17886] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Two experiments were conducted, using the regression method, to determine the true ileal phosphorus (P) digestibility of maize and soybean meal (SBM), and true ileal calcium (Ca) digestibility of SBM for broiler chickens. The aim of Experiment 1 was to determine true ileal P digestibility of maize and SBM. The experimental diets were formulated with four inclusion levels of each test ingredient to achieve graded concentrations of total P (2.5, 3.0, 3.5 and 4.0 g/kg, respectively). The P concentrations in maize-based diets were adjusted by the inclusion of monosodium phosphate. The Ca:total P ratio in all diets was maintained at 1.35 by the addition of limestone. Experiment 2 was conducted to determine true ileal Ca digestibility of SBM. Experimental diets were formulated to contain four levels of SBM to achieve graded concentrations of Ca (2.5, 3.0, 3.5 and 4.0 g/kg, respectively). Because of the low concentration of Ca in SBM, all diets were supplemented with a similar level of limestone to prevent any Ca deficiency. The Ca:total P ratio in all diets was adjusted to be equal by the addition of monosodium phosphate. In both experiments, titanium dioxide (3 g/kg) was used as the indigestible marker. One-day-old male broiler chicks were fed a commercial starter diet from 1 to 21 days of age. On Day 22, a total of 240 and 120 birds were assigned to eight and four dietary treatments in Experiments 1 and 2, respectively, with five replicate cages and six birds per cage. Birds were fed the experimental diets for 7 days. On Day 29, ileal digesta were collected from the posterior half of ileum, and the true P and Ca digestibility of test ingredients were calculated by linear regression analysis. True P digestibility of maize and SBM were determined to be 33.8% and 42.3%, respectively. True Ca digestibility of SBM was determined to be 45.9%.
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189
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Kim SW, Li W, Angel R, Proszkowiec-Weglarz M. Effects of limestone particle size and dietary Ca concentration on apparent P and Ca digestibility in the presence or absence of phytase. Poult Sci 2018; 97:4306-4314. [PMID: 30590821 PMCID: PMC6305832 DOI: 10.3382/ps/pey304] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 06/26/2018] [Indexed: 11/20/2022] Open
Abstract
The present study evaluated the effects of limestone particle size and Ca concentration on apparent ileal digestibility (AID) of P and Ca in the presence or absence of a 6-phytase derived from Buttiauxella sp., expressed in Trichoderma. Treatment diets were corn-soybean meal (SBM) based with no added inorganic Ca or P. The design consisted of a factorial arrangement of 2 particle sizes of limestone from the same source (mean particle size: pulverized, PUV < 75 μm; particulate, PAR = 402 μm); 3 Ca (0.6, 0.8, and 1.0%) and 2 phytase levels (0 and 1,000 (FTU)/kg) plus the corn-SBM basal diet with no added Ca (0.14% Ca), resulting a total of 13 treatments (Trts, n = 9, 3 birds/n). Starting at 27 d of age, broilers were fed the mash diets for 32 h, then sampled for gizzard pH and distal ileal digestibility. Gizzard pH was 1.94 in birds fed diet without added Ca and was similar to those fed diet with PAR limestone regardless of phytase. Gizzard pH was increased in birds fed PUV limestone diets irrespectively of phytase inclusion compared to birds fed 0.14% Ca (P < 0.05), except in birds fed 0.60% Ca diet. In the absence of phytase, AID P was reduced as a result of increases in limestone inclusion (P < 0.05), with a greater effect seen in PUV as compared to PAR limestone. The AID Ca in birds fed PUV limestone diets was lower than that of those fed PAR limestone diets (22.1% vs. 28.2%; P < 0.05). In the presence of phytase, the AID P was not affected by increasing Ca concentration when PAR limestone was used as the Ca source (average = 64.3%), whereas AID P decreased from 66.9% (0.6% Ca) to 51.0% (1.0% Ca) when PUV limestone was used as the Ca source (P < 0.05). In summary, impact of Ca concentration on AID Ca and P was dependent on limestone particle size and phytase inclusion.
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Affiliation(s)
- S-W Kim
- Department of Animal and Avian Sciences, University of Maryland, College Park, MD 20742, USA
| | - W Li
- Department of Animal and Avian Sciences, University of Maryland, College Park, MD 20742, USA
| | - R Angel
- Department of Animal and Avian Sciences, University of Maryland, College Park, MD 20742, USA
| | - M Proszkowiec-Weglarz
- Department of Animal and Avian Sciences, University of Maryland, College Park, MD 20742, USA
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190
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Ravindran R, Hassan SS, Williams GA, Jaiswal AK. A Review on Bioconversion of Agro-Industrial Wastes to Industrially Important Enzymes. Bioengineering (Basel) 2018; 5:E93. [PMID: 30373279 PMCID: PMC6316327 DOI: 10.3390/bioengineering5040093] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 10/24/2018] [Accepted: 10/26/2018] [Indexed: 01/21/2023] Open
Abstract
Agro-industrial waste is highly nutritious in nature and facilitates microbial growth. Most agricultural wastes are lignocellulosic in nature; a large fraction of it is composed of carbohydrates. Agricultural residues can thus be used for the production of various value-added products, such as industrially important enzymes. Agro-industrial wastes, such as sugar cane bagasse, corn cob and rice bran, have been widely investigated via different fermentation strategies for the production of enzymes. Solid-state fermentation holds much potential compared with submerged fermentation methods for the utilization of agro-based wastes for enzyme production. This is because the physical⁻chemical nature of many lignocellulosic substrates naturally lends itself to solid phase culture, and thereby represents a means to reap the acknowledged potential of this fermentation method. Recent studies have shown that pretreatment technologies can greatly enhance enzyme yields by several fold. This article gives an overview of how agricultural waste can be productively harnessed as a raw material for fermentation. Furthermore, a detailed analysis of studies conducted in the production of different commercially important enzymes using lignocellulosic food waste has been provided.
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Affiliation(s)
- Rajeev Ravindran
- School of Food Science and Environmental Health, College of Sciences and Health, Dublin Institute of Technology, Cathal Brugha Street, D01 HV58 Dublin, Ireland.
- School of Biological Sciences, College of Sciences and Health, Dublin Institute of Technology, Kevin Street, D08 NF82 Dublin, Ireland.
| | - Shady S Hassan
- School of Food Science and Environmental Health, College of Sciences and Health, Dublin Institute of Technology, Cathal Brugha Street, D01 HV58 Dublin, Ireland.
- School of Biological Sciences, College of Sciences and Health, Dublin Institute of Technology, Kevin Street, D08 NF82 Dublin, Ireland.
| | - Gwilym A Williams
- School of Biological Sciences, College of Sciences and Health, Dublin Institute of Technology, Kevin Street, D08 NF82 Dublin, Ireland.
| | - Amit K Jaiswal
- School of Food Science and Environmental Health, College of Sciences and Health, Dublin Institute of Technology, Cathal Brugha Street, D01 HV58 Dublin, Ireland.
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191
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Yu X, Han J, Li H, Zhang Y, Feng J. The effect of enzymes on release of trace elements in feedstuffs based on in vitro digestion model for monogastric livestock. J Anim Sci Biotechnol 2018; 9:73. [PMID: 30356951 PMCID: PMC6191990 DOI: 10.1186/s40104-018-0289-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 08/23/2018] [Indexed: 11/10/2022] Open
Abstract
Background This experiment was conducted to study the effect of different feed enzymes (phytase, xylanase, β-glucanase) on release rate of trace elements (Fe, Cu, Mn and Zn) in 6 commonly used feedstuffs (corn, wheat, barley, soybean meal, wheat bran, wheat middlings) by using an in vitro model, simulating the digestive processes in stomach for 2 h and then in small intestine for 6 h at 39 °C. Results Phytase raised (P < 0.05) the release rate of Cu and Zn in corn, Cu, Zn and Mn in wheat, Cu in barley, Cu, Zn and Mn in soybean meal, Zn, Fe in wheat bran and Zn, Fe, Mn in wheat middlings. The release rate of various trace elements in feedstuffs was increased after xylanase addition. Compared with the control group, the release rate of soluble Cu in corn, wheat, barley and soybean meal, soluble Zn in corn, wheat and wheat middlings and soluble of Mn in corn, wheat, barley and wheat bran increased (P < 0.05) after xylanase treatment. After the treatment of β-glucanase, the release rate of soluble Cu in corn, wheat and wheat bran, soluble Fe in barley, soybean meal and wheat bran and soluble Mn in corn and wheat bran all increased (P < 0.05) compared with the control group. In each feedstuff, after corresponding enzyme treatment, the contents of phytic acid, xylan and β-glucan were significantly lower than those of the control group (P < 0.05). Conclusions Results showed that bound trace elements in feedstuffs can be released by feed enzymes. It may be necessary to take the trace elements in feedstuffs into account in the actual feed preparation including feed enzymes.
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Affiliation(s)
- Xiaonan Yu
- Key Laboratory of Animal Nutrition & Feed Science, College of Animal Science, Zhejiang University, Hangzhou, 310012 People's Republic of China
| | - Jianan Han
- Key Laboratory of Animal Nutrition & Feed Science, College of Animal Science, Zhejiang University, Hangzhou, 310012 People's Republic of China
| | - Haiyun Li
- Key Laboratory of Animal Nutrition & Feed Science, College of Animal Science, Zhejiang University, Hangzhou, 310012 People's Republic of China
| | - Yiwei Zhang
- Key Laboratory of Animal Nutrition & Feed Science, College of Animal Science, Zhejiang University, Hangzhou, 310012 People's Republic of China
| | - Jie Feng
- Key Laboratory of Animal Nutrition & Feed Science, College of Animal Science, Zhejiang University, Hangzhou, 310012 People's Republic of China
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192
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Broch J, Nunes RV, Eyng C, Pesti GM, de Souza C, Sangalli GG, Fascina V, Teixeira L. High levels of dietary phytase improves broiler performance. Anim Feed Sci Technol 2018. [DOI: 10.1016/j.anifeedsci.2018.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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193
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Zampiga M, Flees J, Meluzzi A, Dridi S, Sirri F. Application of omics technologies for a deeper insight into quali-quantitative production traits in broiler chickens: A review. J Anim Sci Biotechnol 2018; 9:61. [PMID: 30214720 PMCID: PMC6130060 DOI: 10.1186/s40104-018-0278-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 07/03/2018] [Indexed: 12/12/2022] Open
Abstract
The poultry industry is continuously facing substantial and different challenges such as the increasing cost of feed ingredients, the European Union's ban of antibiotic as growth promoters, the antimicrobial resistance and the high incidence of muscle myopathies and breast meat abnormalities. In the last decade, there has been an extraordinary development of many genomic techniques able to describe global variation of genes, proteins and metabolites expression level. Proper application of these cutting-edge omics technologies (mainly transcriptomics, proteomics and metabolomics) paves the possibility to understand much useful information about the biological processes and pathways behind different complex traits of chickens. The current review aimed to highlight some important knowledge achieved through the application of omics technologies and proteo-genomics data in the field of feed efficiency, nutrition, meat quality and disease resistance in broiler chickens.
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Affiliation(s)
- Marco Zampiga
- Department of Agricultural and Food Sciences, Alma Mater Studiorum - University of Bologna, Via del Florio, 2, 40064 Ozzano dell’Emilia, Italy
| | - Joshua Flees
- Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701 USA
| | - Adele Meluzzi
- Department of Agricultural and Food Sciences, Alma Mater Studiorum - University of Bologna, Via del Florio, 2, 40064 Ozzano dell’Emilia, Italy
| | - Sami Dridi
- Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701 USA
| | - Federico Sirri
- Department of Agricultural and Food Sciences, Alma Mater Studiorum - University of Bologna, Via del Florio, 2, 40064 Ozzano dell’Emilia, Italy
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194
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The effects ofmicrobial phytases and dietary calcium and phosphorus levels on the productive performance and bone mineralization of broilers. Anim Feed Sci Technol 2018. [DOI: 10.1016/j.anifeedsci.2018.07.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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195
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Körfer G, Novoa C, Kern J, Balla E, Grütering C, Davari MD, Martinez R, Vojcic L, Schwaneberg U. Directed evolution of an acid Yersinia mollaretii phytase for broadened activity at neutral pH. Appl Microbiol Biotechnol 2018; 102:9607-9620. [DOI: 10.1007/s00253-018-9308-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/05/2018] [Accepted: 08/06/2018] [Indexed: 01/25/2023]
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196
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Sommerfeld V, Schollenberger M, Kühn I, Rodehutscord M. Interactive effects of phosphorus, calcium, and phytase supplements on products of phytate degradation in the digestive tract of broiler chickens. Poult Sci 2018; 97:1177-1188. [PMID: 29325118 PMCID: PMC5914422 DOI: 10.3382/ps/pex404] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 11/22/2017] [Indexed: 11/20/2022] Open
Abstract
This study aimed to distinguish between the single and interactive effects of phosphorus (P), calcium (Ca), and phytase on products of phytate degradation, including the disappearance of myo-inositol (MI), P, Ca, and amino acids (AA) in different segments of the digestive tract in broiler chickens. Additionally, all dephosphorylation steps from myo-inositol 1,2,3,4,5,6-hexakis (dihydrogen phosphate) (InsP6) to MI were investigated in the digesta of the terminal ileum. Unsexed Ross 308 broiler chickens were allocated to 56 pens with 19 birds per pen, and assigned to one of 8 dietary treatments. The dietary treatments included diets without (P−, 4.1 g/kg DM) or with (P+, 6.9 g/kg DM) monosodium phosphate supplementation, without (Ca−, 6.2 g/kg DM) or with (Ca+, 10.3 g/kg DM) additional fine limestone supplementation, and without or with 1,500 FTU phytase/kg feed in a factorial design. Adding Ca or P had no effect on InsP6 disappearance in the crop when phytase was added. InsP6 disappearance up to the terminal ileum (P−Ca− 56%) was decreased in P+Ca− (40%), and even more so in P+Ca+ (21%), when no phytase was added. Adding phytase removed all effects of P and Ca (77 to 87%); however, P+Ca+ increased the concentrations of lower InsP esters and reduced free MI in the ileum, even in the presence of phytase. These results indicate that mineral supplements, especially P and Ca combined, reduce the efficacy of endogenous microbial or epithelial phosphatases. Supplementation with phytase increased, while supplementation with Ca decreased the concentration of MI in all segments of the digestive tract and in blood plasma, demonstrating the ability of broilers to fully degrade phytate and absorb released MI. While AA disappearance was not affected by P or Ca, or an interaction among P, Ca, and phytase, it increased with the addition of phytase by 2 to 6%. This demonstrates the potential of the phytase used to increase AA digestibility, likely independent of P and Ca supply.
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Affiliation(s)
- V Sommerfeld
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
| | - M Schollenberger
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
| | - I Kühn
- AB Vista, 64293 Darmstadt, Germany
| | - M Rodehutscord
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
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197
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Sommerfeld V, Künzel S, Schollenberger M, Kühn I, Rodehutscord M. Influence of phytase or myo-inositol supplements on performance and phytate degradation products in the crop, ileum, and blood of broiler chickens. Poult Sci 2018; 97:920-929. [PMID: 29300969 PMCID: PMC5850709 DOI: 10.3382/ps/pex390] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 11/16/2017] [Indexed: 11/28/2022] Open
Abstract
The objective of this study was to investigate the effects of supplementation with free myo-inositol (MI) or graded levels of phytase on inositol phosphate (InsP) degradation, concentrations of MI in the digestive tract and blood, bone mineralization, and prececal digestibility of amino acids (AA). Ross 308 broiler hatchlings were allocated to 40 pens with 11 birds each and assigned to one of 5 treatments. The birds were fed a starter diet until d 11 and a grower diet from d 11 to d 22. All diets were based on wheat, soybean meal, and corn. Birds were fed a control diet, calculated to contain adequate levels of all nutrients without (C) or with MI supplementation (C+MI), or one of 3 experimental diets that differed in phytase level (modified E. coli-derived 6-phytase; Phy500, Phy1500, or Phy3000 FTU/kg), with P and Ca levels adapted to the recommendations of the phytase supplier for a phytase level of 500 FTU/kg. The gain:feed ratio (G:F) was increased by MI or phytase in the starter+grower phase by 0.02 g/g. Prececal P and Ca digestibility, P and Ca concentration in blood serum, and tibia ash weight did not differ among treatments (P > 0.05). MI supplementation led to the highest MI concentration in the crop, ileum, and blood plasma across treatments. Phytase supplementation increased MI concentrations in the crop and ileum digesta in a dose-dependent manner and in plasma without any dose effect (P > 0.05). Prececal digestibility of some AA was increased by phytase. These outcomes indicate that MI might have been a relevant cause for the increase in G:F. Therefore, it is likely that the release of MI after complete dephosphorylation of phytate is one of the beneficial effects of phytase, along with the release of P and improvement in digestibility of other nutrients. Simultaneously, MI seems to have no diminishing effects on InsP degradation.
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Affiliation(s)
- V Sommerfeld
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
| | - S Künzel
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
| | - M Schollenberger
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
| | - I Kühn
- AB Vista, 64293 Darmstadt, Germany
| | - M Rodehutscord
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
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198
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The uses of microbial phytase as a feed additive in poultry nutrition – a review. ANNALS OF ANIMAL SCIENCE 2018. [DOI: 10.2478/aoas-2018-0009] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Most of the phosphorus (P) in feed ingredients is present as phytate, which is poorly available for absorption in the gastrointestinal tract of different poultry species due to the lack of endogenous phytase. The supplementation of phytase increases the utilization of P by hydrolyzing phytate, which consequently may reduce the excretion of P in the environment. In addition, it has been suggested that phytase may improve the feed utilization, weight gain, egg production and egg traits, nutrient digestibility, energy availability, retention of important minerals in blood and bones. Thus, the effectiveness of phytase on performance and Ca and P absorption in layer chickens fed corn-soybean based diets has been well recognized. The current review briefly discusses the supplementation of phytase in the diet of poultry on performance and egg production and characteristics as well as amino acids and minerals availability.
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199
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Dersjant-Li Y, Evans C, Kumar A. Effect of phytase dose and reduction in dietary calcium on performance, nutrient digestibility, bone ash and mineralization in broilers fed corn-soybean meal-based diets with reduced nutrient density. Anim Feed Sci Technol 2018. [DOI: 10.1016/j.anifeedsci.2018.05.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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200
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Scholey D, Morgan N, Riemensperger A, Hardy R, Burton E. Effect of supplementation of phytase to diets low in inorganic phosphorus on growth performance and mineralization of broilers. Poult Sci 2018; 97:2435-2440. [DOI: 10.3382/ps/pey088] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 02/26/2018] [Indexed: 11/20/2022] Open
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