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32 articles for “hens”
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Research ArticleOpen accessIn the author namesInfluences of Feed Additives on in vitro Volatile Fatty Acid ProductionA. V. Duncan, A. Woldeghebriel, C. Privott et al.This study investigated effects of the feed additives nitrate and fumarate alone or in combination on in vitro Volatile Fatty Acid (VFA) production. Rumen fluid was collected from Holstein-Friesian cattle averaging 650 kg in BW (body weight) offered 11.4 kg d-1 per animal of concentrate diet containing equal amounts of soybean meal, whole cottonseed and ground corn once a day … …American Journal of Animal and Veterinary Sciences, Vol. 10, Issue 1 · 30 Dec 2014 · 7,227 accessesView PDFCite
Research ArticleOpen accessIn the abstractExogenous Progesterone for Offspring Sex Ratio Manipulation in Arabic Chickens (Gallus turcicus) Leading to Increasing Female Chicks ProportionIswati, Muhammad Halim Natsir, Gatot Ciptadi, Trinil SusilawatiFemale birds of egg-laying hens are more valuable than males, because males bird have no commercial value. The opportunity to manipulate offspring sex ratio in poultry has been observed in female birds; hence, female birds have heterogametic ZW chromosomes. High progesterone concentration 2-5 h before ovulation is thought to affect the segregation of female sex chromosomes as the basis for … …American Journal of Animal and Veterinary Sciences, Vol. 16, Issue 1 · 17 Feb 2021 · 7,500 accessesView PDFCite
Research ArticleOpen accessIn the abstractAge-Dependent Variation of Telomere Length and DNA Damage in ChickenMaxim S. Makarenko, Alexander V. Usatov, Lyubov V. Getmantseva et al.Birds are unique models for molecular studies on aging processes and cellular senescence because of their slow rates of aging and comparatively long life spans among homoeothermic animals. The study aimed to examine the relative telomere length and amount of nuclear, mitochondrial DNA lesions in hens of different ages and to find out the correlation between these biomarkers of aging. … …OnLine Journal of Biological Sciences, Vol. 17, Issue 4 · 14 Dec 2017 · 7,505 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization of Activated Carbon from Eggshell Membranes Prepared Using Sodium Acetate and Zinc Metal ActivationSumrit Mopoung, Kanjana JitchaijaroenkulThe eggshell membranes of ducks and hens were carbonized or activated with 4 wt% sodium acetate or zinc at 400-600°C. The carbonized or activated products were characterized by SEM-EDS, TEM, FTIR and XRD. It was found that the suitable activation temperature for eggshell membranes is 500°C with 30.03-35.26% yield. The activation performance of CH3COONa for eggshell membrane activated carbon production … …American Journal of Applied Sciences, Vol. 14, Issue 8 · 2 Aug 2017 · 8,525 accessesView PDFCite
Research ArticleOpen accessIn the abstractPrevalence and Inhibition of Microbial Load on Chicken Eggs with Special References to Egg Quality and HatchabilityJehan Ismail Ibrahim, H. Dalia Mansour, Hosny Abdellatief AbdelrahmanA total of 304 random chicken egg samples obtained from layers of Balady and Battery systems. 144 of chicken Balady and Battery eggs (72 of each sample were divided into 18 batches) were used for bacteriological evaluation. Enterobactriacae (94.4, 33.3 and 27.7%), Salmonella (77, 29 and 22%), E.coli (44, 0 and 22%) and Staphylococcus aureus (100, 97 and 98%) were … …American Journal of Animal and Veterinary Sciences, Vol. 9, Issue 4 · 26 Dec 2014 · 7,847 accessesView PDFCite
Research ArticleOpen accessIn the abstractBiofortification of Food with MicroelementsKatarzyna Chojnacka, Marcin Mikulewicz, Jerzy CieplikProblem statement: Recently a particular attention was paid to the issue of microelement hunger, also termed hidden hunger. The problem was of global significance, since was related with the public health and concerns over 2 billion people. Approach: The study discusses the state of the art in the research on food biofortification as the sustainable solution to cope with micronutrient … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 4 · 28 Dec 2011 · 8,035 accessesView PDFCite
Research ArticleOpen accessIn the abstractGenetic Capability of Young Layers for Survival after Salmonella entritidis ChallengeE. S. Soliman, H. Busby, C. Kilpatrick et al.Problem statement: Genetic line differences in resistance of layer hens and young chicks to Salmonella entritidis have been identified through a lot of studies. That is why the agricultural industry was prepared for the potential phasing out of antibiotics for use in controlling bacterial pathogens. Early infection may result in long term colonization of layers with Salmonella entritidis, resulting in … …American Journal of Applied Sciences, Vol. 6, Issue 10 · 31 Oct 2009 · 6,780 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization of Maturity Level in Laying Hen Manure by Chemical and Thermogravimetric AnalysisAlice Dall’Ara, Francesco Antolini, Laura Billi et al.This study aims at investigating maturity levels in manure from laying hens in order to encourage its agronomic re-utilization. In fact the use of unstable/insufficiently mature manure could potentially damage both soils and crops. Effective, easy to reproduce methods are needed in order to assess bio-stabilisation and maturity levels, particularly for biomass that has not undergone conventional composting. This study … …American Journal of Environmental Sciences, Vol. 4, Issue 4 · 31 Aug 2008 · 6,540 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffects 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 PDFCite
Research ArticleOpen accessIn the abstractPurification of A Recombinant Thrombin-like Enzyme, Gloshedobin by Egg Yolk Antibody-Coupled AdsorbentsQing Yang, Xuyu Lei, Jianqiang Xu, Lijia AnThe gloshedobin, a snake venom thrombin-like enzyme was biosynthesized in the soluble form and purified by egg yolk antibody-coupled adsorbents from E. coli. As His-tag is not favored from the point of view of high-level and soluble expression, we herein constructed a recombinant gloshedobin without His-tag and developed a novel egg yolk antibody (IgY)-immunoaffinity chromatography for its purification in a … …American Journal of Biochemistry and Biotechnology, Vol. 1, Issue 1 · 31 Mar 2005 · 6,690 accessesView PDFCite