Role of long-term supplementation of 25-hydroxyvitamin D3 on egg production and egg quality of laying hen by C. Chen, B. Turner, T.J. Applegate, Gilberto Litta, W.K. Kim

“…A study was conducted to evaluate the effect of dietary 25-hydroxyvitamin D3 (25OHD) on pullet and egg-laying hen growth performance, egg production, and egg quality. …”
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Dietary 25-hydroxyvitamin D improves intestinal health and microbiota of laying hens under high stocking density by Jianping Wang, Chunhua Zhang, Tao Zhang, Lei Yan, Lingyun Qiu, Huadong Yin, Xuemei Ding, Shiping Bai, Qiufeng Zeng, Xiangbing Mao, Keying Zhang, Caimei Wu, Yue Xuan, Zhiguo Shan

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Dietary 25-hydroxyvitamin D improves productive performance and intestinal health of laying hens under Escherichia coli lipopolysaccharide challenge by Jianping Wang, Xuemei Ding, Qiufeng Zeng, Shiping Bai, Keying Zhang, Xiangbing Mao, Shengyu Xu, Yong Zhuo, Yue Xuan, Huanwei Peng, Jingbo Liu, Huadong Yin

“…Hens were fed the corn-soybean based diets contained either 0 or 80 µg/kg 25OHD for 8 wks. …”
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Effects of phytase supplementation on eggshell and bone quality, and phosphorus and calcium digestibility in laying hens from 25 to 37 wk of age by Koonphol Pongmanee, Imke Kühn, Douglas Ray Korver

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Effects of supplementing natural astaxanthin from Haematococcus pluvialis to laying hens on egg quality during storage at 4°C and 25°C by Nuo Heng, Shan Gao, Yong Guo, Yu Chen, Liang Wang, Xihui Sheng, Xiangguo Wang, Kai Xing, Longfei Xiao, Hemin Ni, Xiaolong Qi

“…The objective of this study was to evaluate the effects of different levels of dietary natural astaxanthin (ASTA) (from the microalga Haematococcus pluvialis) and storage at 4°C and 25°C on the quality of eggs from laying hens. Nongda No. 3 laying hens (n = 450) were randomly allocated to 1 of 5 dietary treatments. …”
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Do laying hens eat and forage in excreta from other hens? by C.G. von Waldburg-Zeil, N. van Staaveren, A. Harlander-Matauschek

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Variation of PM2.5 and PM10 in emissions and chemical compositions in different seasons from a manure-belt laying hen house by Yue Wang, Xinrong Li, Hong Geng, Zhiping Zhu, Qingqing Wang, Hongmin Dong

“…The results showed that the mean ER from the hen house in summer, autumn, and winter were 9.0 ± 1.7, 2.4 ± 0.7, and 1.9 ± 0.7 mg hen−1 d−1 for PM2.5 (P < 0.05), and 30.7 ± 1.1, 12.8 ± 1.5, and 10.9 ± 0.9 mg hen−1 d−1 for PM10 (P < 0.05), respectively. …”
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Níveis de lisina digestível para poedeiras Lohmann LSL na fase de 16 a 25 semanas de idade Digestible lysine levels for Lohmann LSL hens 16 to 25 weeks of age by Roberto de Moraes Jardim Filho, José Henrique Stringhini, Marcos Barcellos Café, Nadja Susana Mogyca Leandro, Maria Auxiliadora Andrade, Fabyola Barros de Carvalho

“…<br>In this experiment, the effects of digestible lysine levels on performance, nitrogen balance and fat digestibility in Lohmann LSL hens 16 to 25 weeks of age were evaluated. Four levels of digestible lysine (0.6, 0.7, 0.8 and 0.9% in ration) were assessed by utilizing 160 16-year-old laying hens 16 to 25 weeks of age. …”
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Methane conversion to syngas by chemical looping on La0.8Sr0.2FexCo1-xO3 (x = 0, 0.25, 0.50, 0.75) perovskites with CO2 co-feeding by Gal Sror, Oranit Cohen, Hen Ohayon Dahan, Miron V. Landau, Moti Herskowitz

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Structure of hen lysozyme in solution. by Smith, L, Sutcliffe, M, Redfield, C, Dobson, C

Effects of Supplementing Selenium-Enriched <i>Cardamine violifolia</i> to Laying Hens on Egg Quality and Yolk Antioxidant Capacity during Storage at 4 °C and 25 °C by Kun Qin, Xin Cong, Hui Wang, Mengke Yan, Xianfeng Xu, Mingkang Liu, Fulong Song, Dan Wang, Xiao Xu, Jiangchao Zhao, Shuiyuan Cheng, Yulan Liu, Huiling Zhu

“…The objective of this study was to assess the effects of dietary supplementation with SEC on egg quality and the yolk antioxidant capacity of eggs stored at 4 °C and 25 °C. Four hundred fifty 65-week-old, Roman hens that were similar in laying rate (90.79 ± 1.69%) and body weight (2.19 ± 0.23 kg) were divided into 5 groups. …”
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The utilization of censor meals by laying hens by Ong, H. K., Hutagalung, R. I.

“…Two types of Censor meals. namely TK8 and TKG. were used to replace maize In the diets at levels of 25. 5O. 75 and 100%. respectively. …”
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Effect of 25-Hydroxycholecalciferol with Different Vitamin D₃ Levels in the Hens Diet in the Rearing Period on Growth Performance, Bone Quality, Egg Production, and Eggs... by Dongdong Li, Keying Zhang, Shiping Bai, Jianping Wang, Qiufeng Zeng, Huanwei Peng, Zuowei Su, Yue Xuan, Sharina Qi, Xuemei Ding

“…A study was conducted to evaluate the effect of 25-hydroxyvitamin D₃ (25-OHD) with different levels of vitamin D₃ (VD₃) during the rearing period (1–20 weeks) on laying hen performance, bone quality, and eggshell quality. …”
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Effects of additional dosage of vitamin D3, vitamin D2, and 25-hydroxyvitamin D3 on calcium and phosphorus utilization, egg quality and bone mineralization in laying hens by R. Adhikari, D. White, J.D. House, W.K. Kim

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The Effect of Feeding Hens a Peanut Skin-Containing Diet on Hen Performance, and Shell Egg Quality and Lipid Chemistry by Ondulla Toomer, Thien Vu, Rebecca Wysocky, Vera Moraes, Ramon Malheiros, Kenneth Anderson

“…Two hundred commercial hens were randomly assigned to four treatments (five replicates) and fed ad libitum for 8 weeks: conventional control diet, diet containing 24% high-oleic peanut (HOPN), diet containing 3% peanut skin (PN Skin), and a diet with 2.5% oleic acid (OA). …”
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Determination of hen eggshell stress by the puncture method by Koprivica Ranko, Veljković Biljana, Rakonjac Simeon, Božić Miloš, Vujičić Vojislav, Radivojević Dušan, Marković Dušan, Đokić Dragoslav

“…The average egg length was 58.05 mm, width 45.46 mm, and shape index 78.25%. The average egg mass was 65.89 g, and the eggshell ratio 12.76% (8.44 g). …”
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Air quality measurements in laying hens housing by Mirko Prodanov, Miroslav Radeski, Vlatko Ilieski

“…The results of the physical measures showed that temperatures in the houses were between 15.31–25.6°C, the relative humidity 48.03-81.12%, while the luminance rarely exceeded 8 lux. …”
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Utilization of sunflower seed in laying hen rations by Tsuzuki ET, Garcia ER de M, Murakami AE, Sakamoto MI, Galli JR

“…The objective of this trial was to evaluate the effect of sunflower seed inclusion (0, 1.4, 2.8, 4.2 and 5.6%) in a laying hen diet containing corn, soybean meal, wheat meal and soybean oil as main ingredients on performance and egg quality. …”
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Study the effect of Ivermectin on infected hens with lice by Z. A. Al-Habobby, F. F. Fayagh, S. W. Al-Zaiday

“…There are only 8 eggs for 25 hens injected the drug ,but the rate increased to 19 eggs, and the size of the hens become larger after one week from injection the drug.The study was show a positive effect for drug in parasite and its eggs , and the blood parameters were returned to normal values in infected hensafter treatment with drug. …”
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Prediction of laying hens of different genetic origins by V. P. Khvostik, Yu. V. Bondarenko, G. A. Paskevych

“…Bridges underestimated the predicted bearing capacity by 3.59–8.25 %. Whereas the model of F. Richards also underestimated egg laying in the 5–7 months by 0.75–3.59 %, and in the last month, on the contrary, overestimated it – by 1.79–4.33 %. …”
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