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Effect of dietary protein sources and storage temperatures on egg internal quality of stored shell eggs

Animal Nutrition 2015年第4期1卷 299-304页

作者： Xiaocui Wang Shugeng Wu Haijun Zhang Hongyuan Yue Guanghai Qi Jie Li Key Laboratory of Feed Biotechnology of Ministry of Agriculture Feed Research Institute Chinese Academy of Agricultural Sciences College of Animal Nutrition and Feed Science Northeast Agricultural University

This study was conducted to evaluate the effects of various protein sources(soybean meal, SBM; cottonseed protein, CSP; double-zero rapeseed meal, DRM) on the internal quality(Haugh unit, yolk index,albumen pH,yolk hardness and yolk springiness) of eggs when stored at either 4 or 28℃ for 28 d. A total of 288 laying hens(32 wk of age) were randomly allotted to 6 treatment groups(4 replicates per treatment) and fed diets containing SBM, CSP, or DRM individually or in combination with equal crude protein content(SBM-CSP, SBM-DRM, and CSP-DRM) as the protein ingredient(s). A 6 x 2 factorial arrangement was employed with dietary types and storage temperatures(4 and 28℃) as the main effects. After 12 wk of diet feeding, a total of 216 eggs was collected for egg internal quality *** results showed as follows: 1) lower egg quality was observed in the DRM group compared with the other groups when stored at 4 and 28℃ for 28 d(P egg internal quality among the other groups. 2) The CSP diet resulted in higher yolk hardness compared with the other diets when eggs were stored at 4℃ for 28 d(P eggs were stored for 28 d at 4℃(P eggs could not be analyzed for egg internal quality when stored at 28℃ for 28 d. The overall results indicated that CSP or DRM as the sole dietary protein source for laying hens may adversely affect the internal quality of stored eggs as compared with the SBM diet, and half replacement of CSP combined with SBM may maintain similar egg quality to SBM diet alone for eggs stored under refrigerated conditions.

关键词： Cottonseed protein Double-zero rapeseed meal Chicken egg Storage temperature egg quality

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Dietary supplementation with calcitriol or quercetin improved eggshell and bone quality by modulating calcium metabolism

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ANIMAL NUTRITION 2024年第3期18卷 340-355页

作者： Fu, Yu Zhou, Jianmin Schroyen, Martine Lin, Jing Zhang, Haijun Wu, Shugeng Qi, Guanghai Wang, Jing Chinese Acad Agr Sci Inst Feed Res Minist Agr & Rural Affairs Key Lab Feed BiotechnolLab Qual & Safety Risk Ass Beijing 100081 Peoples R China Univ Liege TERRA Teaching & Res Ctr Precis Livestock & Nutr Lab Gembloux Agrobio Tech B-5030 Gembloux Belgium

This study was aimed to investigate the effects of dietary calcitriol or quercetin supplementation on eggshell and bone quality of laying hens. In trial 1, 72 Hy-Line Brown layers (80-week-old) with weak-shelled strength (25 to 30 N) were assigned into 4 dietary treatments with 6 replicates of 3 birds and fed a basal diet (4% calcium level) or basal diets supplemented with 0.5% calcium, 5 mu g/kg calcitriol or 500 mg/kg quercetin for 4 weeks. In trial 2, 360 Hy-Line Brown layers (60-week-old) were divided into 3 groups with 8 replicates of 15 birds: control group (basal diet), calcitriol group (basal diet + 5 mu g/kg calcitriol), and quercetin group (basal diet + 500 mg/kg quercetin). This trial lasted for 12 weeks. The results showed that dietary calcitriol or quercetin improved eggshell quality in both trials (P quality, calcium retention of hens and calcium content in uterine fluid at 18.5 h post-oviposition (PO) (P egg production and femoral medullary bone volume/bone tissue volume but reduced femoral s

关键词： Uterine calcium transport Bone remodeling eggshell quality Bone quality Calcitriol Quercetin VITAMIN-D GENE-EXPRESSION egg quality RECEPTOR MINERALIZATION PERFORMANCE STRENGTH 1-ALPHA,25-DIHYDROXYCHOLECALCIFEROL BIOSYNTHESIS OSTEOPOROSIS

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Performance of a water hyacinth(Eichhornia crassipes)system in the treatment of wastewater from a duck farm and the effects of using water hyacinth as duck feed

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Journal of Environmental Sciences 2008年第5期20卷 513-519页

作者： LU Jianbo FU Zhihui YIN Zhaozheng Institute of Agro-Ecology and Ecological Engineering College of Life Sciences Zijingang Campus Zhejiang University Hangzhou 310058 China College of Animal Sciences Huajiachi Campus Zhejiang University Hangzhou 310029 China

Nowadays, intensive breeding of poultry and livestock of large scale has made the treatment of its waste and wastewater an urgent environmental issue, which motivated this study. A wetland of 688 mz was constructed on an egg duck farm, and water hyacinth （Eichhornia crassipes） was chosen as an aquatic plant for the wetland and used as food for duck production. The objectives of this study were to test the role of water hyacinth in purifying nutrient-rich wastewater and its effects on the ducks＇ feed intake, egg laying performance and egg quality. This paper shows that the constructed wetland removed as much as 64.44% of chemical oxygen demand （COD）, 21.78% of total nitrogen （TN） and 23.02% of total phosphorus （TP）. Both dissolved oxygen （DO） and the transparency of the wastewater were remarkably improved, with its transparency 2.5 times higher than that of the untreated wastewater. After the ducks were fed with water hyacinth, the average daily feed intake and the egg-laying ratio in the test group were 5.86% and 9.79% higher, respectively, than in the control group; the differences were both significant at the 0.01 probability level. The egg weight in the test group was 2.36% higher than in the control group （P 〈 0.05）, but the feed conversion ratios were almost the same. The eggshell thickness and strength were among the egg qualities significantly increased in ducks fed with water hyacinth. We concluded that a water hyacinth system was effective for purifying wastewater from an intensive duck farm during the water hyacinth growing season, as harvested water hyacinth had an excellent performance as duck feed. We also discussed the limitations of the experiment.

关键词： water hyacinth (Eichhornia crassipes) duck farm constructed wetland chemical oxygen demand (COD) treatment effect egg-laying ratio egg quality

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Effect of micro-algae Schizochytrium *** in plant diet on reproduction of female rainbow trout(Oncorhynchus mykiss):maternal programming impact of progeny

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Journal of Animal Science and Biotechnology 2022年第4期13卷 1175-1192页

作者： Emilie Cardona Emilien Segret Yoann Cachelou Thibaut Vanderesse Laurence Larroquet Alexandre Hermann Anne Surget Geneviève Corraze Frederic Cachelou Julien Bobe Sandrine Skiba-Cassy INRAE Univ.Pau&Pays AdourE2S UPPANuMéAF-64310Saint Pée-sur-NivelleFrance INRAE UR1037 Fish Physiology and Genomic laboratoryF-35000 RennesFrance Viviers de Sarrance F-64490SarranceFrance Viviers de Rébénacq F-64260RébénacqFrance.

Background:The broodstock diet,and in particular the lipid and fatty acid composition of the diet,is known to play a key role in reproductive efficiency and survival of the progeny in fish.A major problem when replacing both fish meal and fish oil by plant sources is the lack of n-3 long chain polyunsaturated fatty acids,such as eicosapentaenoic acid(EPA)and docosahexaenoic acid(DHA).To address this problem,we studied the effect of the plant-based diet supplemented with Schizochytrium ***,source of DHA,compared to a conventional commercial diet rich in fish meal and fish oil on reproductive performance and egg quality and the consequences on progeny,in female rainbow trout ***:The results demonstrated that DHA-rich microalgae supplementation in a plant-based diet allowed for the maintenance of reproductive performance and egg quality comparable to a conventional commercial feed rich in fish meal and fish oil and led to an increased significant fry survival after ***,when females were fed a plant-based diet supplemented with micro-algae,the 4-month-old progenies showed a significant higher growth when they were challenged with a similar diet as broodstock during 1 *** provide evidence for metabolic programming in which the maternal dietary induced significant protracted effects on lipid metabolism of ***:The present study demonstrates that supplementation of a plant-based diet with DHA-rich microalgae can be an effective alternative to fish meal and fish oil in rainbow trout broodstock aquafeed.

关键词： egg quality Micro-algae Nutritional programming Plant diet Rainbow trout Reproduction

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Effects of Desmodium uncinatum Leaf Meal in the Diet on Lohmann Brown Hens’ Laying Performance and eggs quality

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Open Journal of Animal Sciences 2023年第1期13卷 166-178页

作者： Hervé Mube Kuietche Cyrille D’Alex Tadondjou Rubens Ngouana Tadjong Josiane Lobeng Mouaffo Fostso Jean Raphael Kana Alexis Teguia Faculty of Agriculture and Agricultural Sciences University of Dschang Dschang Cameroon National Higher Polytechnic School of Maroua University of Maroua Maroua Cameroon Institute of Fisheries and Aquatic Sciences University of Douala Douala Cameroon Higher Teacher Training School of Bambili University of Bamenda Bamenda Cameroon

A cheap, safe and available alternative protein source to soybean is a huge priority for the developing world. This study is aimed at evaluating the effects of Desmodium uncinatum leaf meal incorporation levels in the diet on Lohmann Brown hens’ laying performances. For this purpose, 60 Lohmann Brown hens aged 33 weeks with an average weight of 1.78 kg were randomly assigned to 3 treatment groups of 20 birds each with 4 replicates. The experimental treatments consisted of DULM 0, DULM5, and DULM10 containing 0, 5 and 10 kg of D. uncinatum leaf meal (DULM) per 100 kg of feed respectively. The results reveal that except for the weights of hens, laying performances were significantly affected (p egg weight, egg mass, yolk index, albumen index and egg production were recorded with diet DULM5. On the other hand, the diet with 10% of DULM (DULM10) recorded the highest relative shell weight, feed conversion ratio and egg price. Nevertheless, the mortality rate found in this study was 0% for all treatments confirming the good quality of DULM as protein feedstuff for layer. It was concluded that incorporation levels of D. uncinatum leaves at 5% in the diet improved the laying performances of Lohmann Brown hens.

关键词： Desmodium uncinatum Laying Hens egg Production egg quality

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Sensory Characteristics, Nutritional Composition, and quality of eggs from Different Chickens

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Open Journal of Animal Sciences 2022年第4期12卷 591-615页

作者： Atsbaha Hailemariam Wondmeneh Esatu Solomon Abegaz Mengistu Urge Getnet Assefa Tadelle Dessie Ethiopia Agricultural Research Institute Mekhoni Agricultural Research Center Mekhoni Ethiopia International Livestock Research Institute Addis Ababa Ethiopia Ethiopia Agricultural Research Institute Debrezeit Agricultural Research Center Bishoftu Ethiopia Haramaya University School of Animal and Range Sciences Dire Dawa Ethiopia Ethiopian Institute of Agricultural Research Addis Ababa Ethiopia

The present study evaluated the sensory, composition, and quality of eggs from Cosmopolitan (C), Improved Horro (H), ♂ Improved Horro * Cosmopolitan ♀ (HC), ♂ Cosmopolitan * Improved Horro ♀ (CH), Indigenous(L), and Koekoek (KK) genotypes. A completely randomized design was used in the study. A total of 108 (18/genotype), 180 (30/genotype), and 90 (15/genotype) eggs were used for the sensory, composition, and egg quality tests, respectively. All data were analyzed following the GLM model using SAS software. The boiled and scrambled eggs from L, H, and C were (P ≤ 0.001) preferred followed by CH, HC, and KK. Results showed that KK, HC, CH, and C eggs were higher in moisture, crude fat, crude ash, and crude fiber, but these traits were found lower in H and L genotypes. A significantly highest crude protein was observed in L (21.19 ± 0.19) genotype, with higher in H (20.62 ± 0.26), intermediate in HC (19.96 ± 0.29), C (19.85 ± 0.10), and CH (19.40 ± 0.37), whereas the eggs from KK genotype had the lowest crude protein content (18.69 ± 0.20). The egg quality was (P = 0.001 - 0.01) affected across traits except for eggshell indices (P > 0.05). The genotypes with a negative significant correlation with crude protein had a positive significant correlation with almost all composition and egg external quality traits. The genotypes with positive significant correlations of egg weight had positive significant correlations with most internal egg quality traits except that of yolk weight ratio, yolk albumen ratio, and yolk color. Conclusively: the eggs of L, H, and C genotypes were best favored followed by CH and C, but the KK genotype was the least favored, and these differences were deemed due to genetic variations, and interventions. Furthermore, the eggs laid from genotypes with deep yellow yolk color might be the most nutritious. It could also necessitate future breeding and dietary studies.

关键词： Chicken Sensory Characteristics Nutritional Composition egg quality Correlation

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Application of Several Additives Instead of Antibiotics in the Production of Laying Hens

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Animal Husbandry and Feed Science 2017年第1期9卷 24-27页

作者： Qiao Limin Yang Jiuxian Cao Jinyuan Beijing Vocational College of Agriculture Beijing 102442China

[ Objective ] The test was conducted to study the effect of three different additives instead of antibiotics in the production of laying hens. [ Method ] Basal diets in four test groups were added with 0. 015 % oxytetracycline, 0. 01% microecological preparation, 0.2% fulvic acid, and 0. 1% Chinese herbal medi- cine extract respectively, and laying hens in control group were fed with basal diets. Effect of four different additives on performance and egg quality were studied under the temperature of 28.6℃. [ Result] The average egg-laying rate and feed-egg ratio in groups 2, 3 and 4 were significantly better than those in control group and group 1 （P 〈 0.05 ）. The contents of fat and cholesterol in eggs in groups 2, 3 and 4 were lower than those in control group and group 1. And the fat content of eggs in group 4 was 13.42% lower than that in control group, the difference was significant （ P 〈 0.05 ）. The protein contents in groups 2, 3 and 4 were signifi- cantly higher than those in control group and group 1 （P 〈 0.05 ）. [Condusion ] Microecological preparation, fulvic acid and Chinese herbal medicine extract could replace antibiotics to be applied in the production of laying hens.

关键词： Microecologieal preparation Fulvic acid Chinese herbal medicine extract Laying hens Production performance egg quality

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Effects of Dietary Replacing Corn with Bakery by-product with or without Enzyme Supplementation on Performance of Laying Hens

Effects of Dietary Replacing Corn with Bakery by-product wit...

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International Conference on Environmental Science and Technology（ICEST 2011）

作者： M.Torki V.Kimiaee Department of Animal Science Agricultural Faculty Razi University

The objectives of this experiment was to investigate effects of dietary replacement of maize with bakery by-product（BB） with or without enzyme supplementation on the performance of laying hens and egg quality characteristics.A total number of 180 Hy-Line Leghorn hens were weighed and distributed between 30 cages with almost same egg production（EP） level among the *** iso-caloric and iso-nitrogenous diets were formulated（ME=2900 kcal/kg and crude protein= 15.20 g/100 g diet） based on catalogue of *** experiment was conducted as a 3×2 factorial arrangement of treatments including three replacement levels（0,50,and 100%） of corn with dried bakery byproduct replacement) and enzyme supplementation（0 and 0.06 g/100 g diet of Hemicell?,a commercial β-mannanase-based enzyme product）.Each of 6 experimental diet fed hens in 5 replicates with 6 birds per each replicate（cage）.The hens’ performance including hen-day egg production%（EP）,egg weight（EW） and feed intake（FI） was measured for 4 weeks and egg mass（EM,g/hen/day） as well as feed conversion ratio（FCR,g feed:g egg） was *** data was analyzed based on completely randomized designusing GLM procedure of *** dietary corn with BB had no significant effect on egg production（%）,except in week *** production in group of 100% corn-replacement in week 2 was lower than the other dietary ***,the overall EP for weeks 1-4 was not significantly affected by replacing dietary corn with *** addition,EM and FCR were not significantly affected by dietary *** weight was affected by dietary corn-replacement in weeks 1 and 2;however,no significant difference was found in weeks 3 and *** quality characteristics were not affected by dietary *** supplementation had no significant effect on performance of hens and egg quality *** the results of this experiment it can be concluded that dietary corn can be totally replaced with bakery by-products with no adverse effect on

关键词： Bakery by-products performance laying hens egg quality

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