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Egg quality

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https://www.readbyqxmd.com/read/28345506/parasite-performance-and-host-alternation-is-there-a-negative-effect-in-host-specific-and-host-opportunistic-parasites
#1
Luther VAN DER Mescht, Irina S Khokhlova, Elizabeth M Warburton, Boris R Krasnov
Environmental fluctuations are expected to require special adaptations only if they are associated with a decrease in fitness. We compared reproductive performance between fleas fed on alternating (preferred and non-preferred) hosts and fleas fed solely on either a preferred or a non-preferred host to determine whether (1) host alternation incurs an immediate negative effect, and, if yes, then (2) whether this effect is greater in a host specialist (Parapulex chephrenis) than in host generalists (Xenopsylla conformis and Synosternus cleopatrae)...
March 27, 2017: Parasitology
https://www.readbyqxmd.com/read/28340888/veterinary-aspects-of-bird-of-prey-reproduction
#2
REVIEW
Tom A Bailey, Michael Lierz
Captive breeding has contributed to successful restoration of many species of birds of prey. Avicultural techniques pioneered by raptor breeders include double clutching, direct fostering, cross-fostering, hatch and switch, hacking, imprinting male and female falcons for semen collection, and artificial insemination techniques. However, reproductive failure occurs related to management problems, including hygiene measures, food quality issues, breeding flock structure, or individual health issues of breeding birds...
May 2017: Veterinary Clinics of North America. Exotic Animal Practice
https://www.readbyqxmd.com/read/28340146/effect-of-broiler-breeders-fed-with-corn-or-sorghum-diet-and-canthaxanthin-supplementation-on-production-and-reproductive-performance
#3
C E V Bonilla, A P Rosa, A Londero, C B S Giacomini, C Orso, M O Fernandes, S J Paixão, D V Bonamigo
This study was designed to evaluate the effect of corn or sorghum diet and canthaxanthin (CX) supplementation on performance in broiler breeders. A total of 440 females with similar body weight (BW) (3.71 ± 0.14 kg) and 60 roosters were placed in an open-sided house with 20 pens, randomly distributed in a factorial arrangement (2 × 2). There were 4 diets of 2 ingredients; corn (CO) or sorghum (SO) and 2 levels of CX; 6 mg/kg (CX) and 0 mg/kg (NCX) totaling 5 replicate pens of 22 females and 3 males each, from 42 to 65 wk, divided in 2 periods (from wk 42 to 53 and wk 54 to 65)...
March 4, 2017: Poultry Science
https://www.readbyqxmd.com/read/28340058/predictive-modeling-for-monitoring-egg-freshness-during-variable-temperature-storage-conditions
#4
S M Yimenu, J Y Kim, J Koo, B S Kim
The overall aim of this research was to develop egg freshness prediction models in terms of selected quality indices. Six experiments (4 constant temperatures and 2 variable temperatures) were carried out on hen eggs for a total period of 10, 21, 26, 13, and 105 d at storage temperatures of 30, 20, 20 to 10, 30 to 10, and 5 and 10°C, to observe trends in the relative weight loss (RWL), Haugh unit (HU), yolk index (YI), albumin index (AI), yolk pH, and albumin pH. The results showed that there was an increasing trend in the RWL and a decreasing trend in the YI, AI, and HU for all temperature conditions...
March 2, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339969/the-quality-of-eggs-organic-and-nutraceutical-vs-conventional-and-their-technological-properties
#5
Agnieszka Filipiak-Florkiewicz, Katarzyna Deren, Adam Florkiewicz, Kinga Topolska, Leslaw Juszczak, Ewa Cieslik
The aim of the study was to compare the quality of commercially available eggs: organic (attested organic farm) - OE, nutraceutical (enriched in n-3 fatty acids) - NE, vs. conventional (cage raising system) - CE and their technological (emulsifying) properties. Their basic chemical composition (i.e., moisture, protein, fat, ash) as well as mineral (Na, K, Ca, Mg, Zn, Fe, Mn, Cu) contents were assessed, and fatty acid profiles were determined. Next, the suitability of the eggs for mayonnaise production was assessed...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339968/optimization-of-dietary-zinc-for-egg-production-and-antioxidant-capacity-in-chinese-egg-laying-ducks-fed-a-diet-based-on-corn-wheat-bran-and-soybean-meal
#6
W Chen, S Wang, H X Zhang, D Ruan, W G Xia, Y Y Cui, C T Zheng, Y C Lin
The aim of this study was to evaluate the effect of zinc supplementation on productive performance and antioxidant status in laying ducks. Five-hundred-four laying ducks were divided into 7 treatments, each containing 6 replicates of 12 ducks. The ducks were caged individually and fed a corn-soybean meal and wheat bran basal diet (37 mg Zn/kg) or the basal diet supplemented with 15, 30, 45, 60, 75, or 90 mg Zn/kg (as zinc sulfate). During the early laying period of 10 d (daily egg production <80%), egg production, daily egg mass, and FCR increased quadratically with increasing dietary Zn levels (P < 0...
March 2, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339941/productive-performance-egg-quality-and-hatching-traits-of-japanese-quail-reared-under-different-levels-of-glycerin
#7
A Ghayas, J Hussain, A Mahmud, K Javed, A Rehman, S Ahmad, S Mehmood, M Usman, H M Ishaq
This study evaluated subsequent effects of glycerin on productive performance, egg quality, and hatching traits in Japanese quail. A total of 200 birds was arranged according to a completely randomized design into 5 treatment groups having 5 replicates of 8 birds each (6 females and 2 males). Treatments consisted 5 levels of glycerin, i.e., 2.5, 5, 7.5, and 10% and the control group. Birds were fed with different levels of glycerin during a rearing period of 6 wk and their subsequent effects on productive performance, egg quality, and hatching traits were observed...
March 2, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339925/effects-of-different-storage-time-on-hatching-results-and-some-egg-quality-characteristics-of-rock-partridge-a-graeca-management-and-production
#8
S Günhan, K Kirikçi
In this research, partridge eggs were stored during zero to 7, 8 to 14, 15 to 21, 22 to 28, 29 to 35 and 36 to 42 d, respectively. The effect of different egg storage periods on egg protein and moisture rates, mineral contents, and some egg quality and hatching characteristics were investigated. The extension of egg storage times didn't affect the external quality features like shell weight, shell thickness, and albumen rate, but it affected the yolk weight, yolk index, albumen index, and Haugh unit (P < 0...
March 3, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339834/effects-of-coccidiosis-vaccination-administered-by-in-ovo-injection-on-ross-708-broiler-performance-through-14-days-of-post-hatch-age
#9
A O Sokale, W Zhai, L M Pote, C J Williams, E D Peebles
Effects of the in ovo injection of a commercial coccidiosis vaccine on various hatching chick quality variables and 14 d post-hatch (dph) oocyst shedding have been previously examined. The current study was designed to examine the performance of Ross 708 broilers during the 14 dph period of oocyst shedding following the application of the coccidiosis vaccine. On each of 7 replicate tray levels of a single-stage incubator, a total of 4 treatment groups was randomly represented, with each treatment group containing 63 eggs...
February 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339779/effect-of-the-combination-of-white-and-red-led-lighting-during-incubation-on-layer-broiler-and-pekin-duck-hatchability
#10
G S Archer, D Jeffrey, Z Tucker
Previous research has shown that providing light during incubation can have positive effects on hatchability and chick quality; however, white light alone has been observed to improve these factors only in pigmented broiler eggs and non-pigmented white layer eggs. Monochromatic red light has been shown to improve hatchability in layer eggs. Therefore the objective of this study was to utilize one light fixture that emitted both white and monochromatic red light to determine if this one light source could improve hatchability in both types of chicken eggs and pigmented Pekin duck egg...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339770/characterization-of-indigenous-aseel-chicken-breed-for-morphological-growth-production-and-meat-composition-traits-from-india
#11
U Rajkumar, S Haunshi, C Paswan, M V L N Raju, S V Rama Rao, R N Chatterjee
Aseel is an important native chicken breed of India, known for its martial qualities (aggressive fighting abilities), pugnacity, and majestic gait. The aim of the study is to conserve and characterize the Aseel germplasm, which is considered to be endangered. The birds were maintained on deep litter under a simulated backyard type of housing having night shelter and a free-range area. A total of 313 chicks produced in the second generation from the flock collected from native tract in Andhra Pradesh was characterized for morphological, growth, production, and meat quality parameters...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339615/viable-offspring-after-imaging-of-ca2-oscillations-and-visualization-of-the-cortical-reaction-in-mouse-eggs%C3%A2
#12
Yuhkoh Satouh, Kaori Nozawa, Kazuo Yamagata, Takao Fujimoto, Masahito Ikawa
During mammalian fertilization, egg Ca 2+ oscillations are known to play pivotal roles in triggering downstream events such as resumption of the cell cycle and the establishment of blocks to polyspermy. However, viable offspring have not been obtained after monitoring Ca 2+ oscillations, and their spatiotemporal links to subsequent events are still to be examined. Therefore, the development of imaging methods to avoid phototoxic damage while labeling these events is required. Here, we examined the usefulness of genetically encoded Ca 2+ indicators for optical imaging (GECOs), in combination with spinning-disk confocal imaging...
February 3, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28339512/effects-of-mulberry-leaves-on-production-performance-and-the-potential-modulation-of-antioxidative-status-in-laying-hens
#13
W C Lin, M T Lee, S C Chang, Y L Chang, C H Shih, B Yu, T T Lee
This study evaluated the antioxidant ability of Taisung No. 3 mulberry leaf extract (MLE) as well as the potential of mulberry leaf (ML)-based dietary supplementation for modulating the antioxidative status of laying hens. The results showed that the MLE had a total phenolic compound content of 7.4 ± 0.15 mg of gallic acid equivalent/g dry weight (DW) and a total flavonoid content of 4.4 ± 0.19 mg of quercetin equivalent/g DW. The 2, 2-diphenyl-1-picrylhydrazyl free-radical-scavenging ability was 45...
October 6, 2016: Poultry Science
https://www.readbyqxmd.com/read/28339458/rapid-surveillance-for-vector-presence-rsvp-development-of-a-novel-system-for-detecting-aedes-aegypti-and-aedes-albopictus
#14
Brian L Montgomery, Martin A Shivas, Sonja Hall-Mendelin, Jim Edwards, Nicholas A Hamilton, Cassie C Jansen, Jamie L McMahon, David Warrilow, Andrew F van den Hurk
BACKGROUND: The globally important Zika, dengue and chikungunya viruses are primarily transmitted by the invasive mosquitoes, Aedes aegypti and Aedes albopictus. In Australia, there is an increasing risk that these species may invade highly urbanized regions and trigger outbreaks. We describe the development of a Rapid Surveillance for Vector Presence (RSVP) system to expedite presence- absence surveys for both species. METHODOLOGY/PRINCIPAL FINDINGS: We developed a methodology that uses molecular assays to efficiently screen pooled ovitrap (egg trap) samples for traces of target species ribosomal RNA...
March 24, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28335483/land-use-for-edible-protein-of-animal-origin-a-review
#15
REVIEW
Gerhard Flachowsky, Ulrich Meyer, Karl-Heinz Südekum
The present period is characterized by a growing world population and a higher demand for more and better quality food, as well as other products for an improved standard of living. In the future, there will be increasingly strong competition for arable land and non-renewable resources such as fossil carbon-sources, water, and some minerals, as well as between food, feed, fuel, fiber, flowers, and fun (6 F's). Proteins of animal origin like milk, meat, fish, eggs and, probably, insects are very valuable sources of essential amino acids, minerals and vitamins, but their production consumes some non-renewable resources including arable land and causes considerable emissions...
March 18, 2017: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/28334386/effects-of-xylem-sap-composition-on-glassy-winged-sharpshooter-hemiptera-cicadellidae-egg-maturation-on-high-and-low-quality-host-plants
#16
Mark S Sisterson, Christopher M Wallis, Drake C Stenger
Glassy-winged sharpshooters must feed as adults to produce mature eggs. Cowpea and sunflower are both readily accepted by the glassy-winged sharpshooter for feeding, but egg production on sunflower was reported to be lower than egg production on cowpea. To better understand the role of adult diet in egg production, effects of xylem-sap chemistry on glassy-winged sharpshooter egg maturation was compared for females confined to cowpea and sunflower. Females confined to cowpea consumed more xylem-sap than females held on sunflower...
March 6, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28321941/tadpole-begging-reveals-high-quality
#17
Matthew B Dugas, Stephanie A Strickler, Jennifer L Stynoski
Parents can benefit from allocating limited resources non-randomly among offspring, and offspring solicitation (i.e., begging) is often hypothesized to evolve because it contains information valuable to choosy parents. We tested the predictions of three 'honest begging' hypotheses -Signal of Need, Signal of Quality, and Signal of Hunger - in the tadpoles of a terrestrial frog (Oophaga pumilio). In this frog, mothers provision tadpoles with trophic eggs, and when mothers visit, tadpoles perform a putative begging signal by stiffening their bodies and vibrating rapidly...
March 21, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28316783/current-and-future-prospects-for-nanotechnology-in-animal-production
#18
REVIEW
Emily K Hill, Julang Li
Nanoparticles have been used as diagnostic and therapeutic agents in the human medical field for quite some time, though their application in veterinary medicine and animal production is still relatively new. Recently, production demands on the livestock industry have been centered around the use of antibiotics as growth promoters due to growing concern over microbial antibiotic resistance. With many countries reporting increased incidences of antibiotic-resistant bacteria, laws and regulations are being updated to end in-feed antibiotic use in the animal production industry...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28316402/prevalence-and-risk-factors-for-gastrointestinal-parasitism-in-traditionally-maintained-goat-flocks-of-south-gujarat
#19
L M Sorathiya, A B Fulsoundar, T K S Rao, Niranjan Kumar
A total of 360 faecal samples of goat belonging to Ahir community were collected randomly from eight villages on monthly basis. On same day, collected samples were subjected to qualitative faecal examination and positive samples were categorized into mild, moderate and heavy infected groups. The risk factors considered for study were age, pregnancy, lactation, seasons, wet land grazing and hygiene in housing. Overall 41.11 % animals were found positive for helminth eggs and among them 24.17, 10.56 and 6.39 % of goats were mildly, moderately and heavily infected, respectively...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28300010/effect-of-dietary-supplementation-of-ligustrum-lucidum-on-performance-egg-quality-and-blood-biochemical-parameters-of-hy-line-brown-hens-during-the-late-laying-period
#20
X L Li, W L He, M L Yang, Y M Yan, Y H Xue, S T Zhao
The fruit of Ligustrum lucidum (FLL, Nuzhenzi in Chinese) is an important traditional medicine, and have attracted significant research attention because of their various biological activities. However, there are few research reports available on the use of FLL as a feed additive in livestock nutrition, particularly in layers. This study was conducted to determine the effects of supplementation of the diet of laying hens with FLL on laying performance, egg quality and blood metabolites. A total of 360 72-week-old hens were allocated to three dietary treatments (eight replications of 15 hens/treatment group) and were fed either a control diet or a diet supplemented with an inclusion level of 0...
March 16, 2017: Animal: An International Journal of Animal Bioscience
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