22 results for “Laying hen”

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Research ArticleOpen accessPhrase in the titleMeta-Analysis of Bacillus in Laying Hen Nutrition: Feed Intake, Feed Conversion Ratio and Egg Productive IndicesChristian Anayo Mbajiorgu, Ifeanyichukwu Princewill Ogbuewu, Monnye MabelebeleThis data synthesis study aimed to explore the impact of bacillus additive on performance of laying hens. Three bibliographic databases were scanned, with no restrictions on language and date. The inclusion criteria were randomised and controlled trials using non-diseased laying hens and published in peer-reviewed journals. The eligibility criteria were also information on measured performance parameters and studied moderators. Eighteen … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 2 · 17 Jun 2025 · 3,937 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titleWorking Time Allocation and Income of Small-Scale Laying Hens in Blitar, IndonesiaBudi Hartono, Puji Akhiroh, Nanang FebriantoThe purpose of this research was to analyze the working time allocation on laying hen’s household and to analyze the laying hens farmer’s income in Blitar Regency. Blitar Regency was purposively determined as the research location, with the consideration that Biltar Regency is one of the largest populations of laying hens in Indonesia. The research was conducted from May to … …American Journal of Animal and Veterinary Sciences, Vol. 16, Issue 3 · 7 Oct 2021 · 6,458 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titleEffect of Bromocriptine and Nano-Bromocriptine on Egg Quality Parameters of Late Laying HensAhmed Dawod, Noha Osman, Hanim S. Heikal, Hamada MahboubThe study was conducted to determine the effect of bromocriptine and nano-bromocriptine on external and internal egg qualities of late laying hens. A total of 150 Novo-gene brown strain hens of 70 weeks of age were selected from a commercial laying farm. The birds were divided randomly into three groups, with 50 birds in each. The first group was given … …American Journal of Pharmacology and Toxicology, Vol. 16, Issue 1 · 30 Sep 2021 · 6,751 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titleThe Effect of Bacterial Enzyme-Based Feed Additives on the Productivity, Digestibility and Assimilation of Nutrients in Young Laying HensSmolentsev Sergei Yur’evich, Rudakova Natalia Leonidovna, Koryagina Anastasia Olegovna et al.The work aimed to study the effect of feed additives based on proteinase and phytase on the productivity, digestibility of nutrients and the development of laying hens up to 18 weeks of age. A total of 360 1-day-old Hisex Brown chickens were assigned to a completely randomized design composed of 3 diets with 4 replicates of 30 birds each. Dietary … …OnLine Journal of Biological Sciences, Vol. 20, Issue 4 · 19 Nov 2020 · 6,297 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titleNew Biological Dietary Feed Supplement for Laying Hens with Microelements Based on Duckweed (Lemna minor)Zuzanna Witkowska, Agnieszka Saeid, Katarzyna Chojnacka et al.In this study the applicability of enriched duckweed (Lemna minor) as a dietary supplement witch microelements is reported. In our previous studies, the technology of new feed additives with microelements based on duckweed biomass was elaborated. Here, we report the evaluation of the properties of a new product. The effect of duckweed enriched with microelements on the productivity parameters of … …American Journal of Agricultural and Biological Sciences, Vol. 7, Issue 4 · 31 Jan 2013 · 8,549 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titleDietary Inclusion of Probiotics, Prebiotics and Synbiotic and Evaluating Performance of Laying HensMohammad Zarei, Mohammad Ehsani, Mehran TorkiProblem Statement: This study was conduct to compare effects of various commercial feed additives on performance of laying hens. Approach: To evaluate effects of dietary inclusion of feed additives (Yeasturer, A-Max, Thepax, Fermacto and Biomin) on performance of laying hens, 216 Lohmann LSL-Lite hens were divided in 36 cages (n = 6). Approach Hens in 6 cages (replicates) were assigned … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 2 · 6 Jun 2011 · 9,373 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titleEffects of Dietary Inclusion of Guar Meal Supplemented by β-Mannanase on Performance of Laying Hens, Egg Quality Characteristics and Diacritical Counts of White Blood CellsMohammad Ehsani, Mehran TorkiProblem statement: Using Guar Meal (GM) in poultry diets has being limited because of having β-mannan, one of the Nonstarch Polysaccharides (NSP). In this study we try evaluating effects of enzyme supplementation of GM-included diets on productive performance of laying hens. Approach: A total number of 144 Lohmann LSL-Lite hens were divided in 24 cages (n = 6). Based on … …American Journal of Animal and Veterinary Sciences, Vol. 5, Issue 4 · 27 Dec 2010 · 8,496 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titleAdding Medicinal Herbs Including Garlic (Allium sativum) and Thyme (Thymus vulgaris) to Diet of Laying Hens and Evaluating Productive Performance and Egg Quality CharacteristicsR. Ghasemi, M. Zarei, M. TorkiProblem statement: In trying to finding phytogenic antibiotic-substitutes this study was done and effects of adding graded levels of Medicinal Herbs (MH) including garlic (Allium sativum) and thyme (Thymus vulgaris) to laying hens’ diet on productive performance investigated. Approach: A total number of 108 Lohmann LSL-Lite hens after production peak were randomly divided in 18 cages (n = 6). Three … …American Journal of Animal and Veterinary Sciences, Vol. 5, Issue 2 · 30 Jun 2010 · 18,511 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titlePhysiological Response and Postmolt Performance of Laying Hens Molted by Non-Feed Removal MethodsFariborz Khajali, Saied Karimi, M.R. AkhariOne experiment was conducted to evaluate the physiological response and postmolt performance of laying hens subjected to non-feed removal molting programs. One hundred and eighty 78-week-old Hy-line W36 laying hens were distributed among 45 groups of four birds and located in cages so that mean body weight of each cage was very similar. Three adjacent cages were considered as a … …American Journal of Animal and Veterinary Sciences, Vol. 3, Issue 1 · 31 Mar 2008 · 6,845 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titleEffects of Reduced- Protein Diets at Constant Total Sulfur Amino Acids: Lysine Ratio on Pullet Development and Subsequent Laying Hen PerformanceFariborz Khajali, M. Faraji, Saeid Karimi DehkordiThe effect of using a low protein regime in pullet development and subsequent layer performance was studied. The experiment consisted of two periods of rearing and laying. Two hundred and sixty Hy-line W36 chicks were used. In the rearing period, dietary protein level and ME content series of the control group used during starter (18-42), grower (43-63) and developer (64-119d) … …American Journal of Animal and Veterinary Sciences, Vol. 2, Issue 4 · 31 Dec 2007 · 7,067 accessesView PDF Cite