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Kai Qiu, Xinyu Chang, Jing Wang, Haijun Zhang and Shugeng Wu
This study aimed to verify the potential of calcium lactate for the performance, blood index, shinbone quality, jejunal immunity, and egg quality of aged laying hens. A total of 360 62-week-old Hy-Line Brown laying hens were randomly divided into four tr...
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Afsana A. Jahan, Thi Hiep Dao, Natalie K. Morgan, Tamsyn M. Crowley and Amy F. Moss
Laying hen nutrient requirements change throughout the day, due to the cyclic nature of egg formation. Generally, more energy and protein are required in the morning when the albumen is deposited around the yolk, and more calcium is required in the eveni...
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Edward Majewski, Norbert Potori, Piotr Sulewski, Adam Was, Martyna Mórawska, Monika Gebska, Agata Malak-Rawlikowska, Anna Grontkowska, Viktor Szili and Adél Erdos
This paper?s main objective is to assess the impacts of the ban on cages for housing laying hens, planned by the European Commission to raise animal welfare standards beyond the level set in the current legislation. The farm-level economic assessments of...
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Xianying Zhang, Pengcheng Li, Mingyi Zhao, Shuqiang Wang, Baoyi Sun, Yulan Zhang, Yonghuan Wang, Zhenhua Chen, Hongtu Xie, Nan Jiang and Tingting Li
The breeding of laying hens and broilers in China has increased tremendously. Wet organic fertilizer prepared from hen manure using high-temperature container fermentation preserves high levels of nutrients and a diverse microbial community. We applied l...
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Giancarlo Bozzo, Nicola Pugliese, Rossella Samarelli, Antonella Schiavone, Michela Maria Dimuccio, Elena Circella, Elisabetta Bonerba, Edmondo Ceci and Antonio Camarda
Mycotoxins are toxic secondary metabolites produced by fungal species that usually contaminate foods and feeds. Their lipophilic properties allow them to persist in the fat tissues of animals that ingest them, representing a risk for the consumers becaus...
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Tatiana Dumitra Panaite, Gabriela Maria Cornescu, Nicoleta Corina Predescu, Ana Cismileanu, Raluca Paula Turcu, Mihaela Saracila and Cristina Soica
Protein is an essential nutrient for laying hens, playing a crucial role in egg production and supporting their overall health. An 8-week feeding trial was conducted on 120 Lohmann Brown laying hens (aged 38 weeks). The layers were assigned randomly to t...
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Alexandru Usturoi, Marius-Giorgi Usturoi, Bogdan-Vlad Avarvarei, Claudia Pânzaru, Cristina Simeanu, Madalina-Iuliana Usturoi, Mihaela Spataru, Razvan-Mihail Radu-Rusu, Marius-Gheorghe Dolis and Daniel Simeanu
Predictions show the possibility of banning birds? rearing in batteries. From this reason, we aimed to study the welfare conditions assured to birds accommodated in lofts in comparison with those reared in improved batteries. The research targeted ISA Br...
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Afsana A. Jahan, Thi Hiep Dao, Nasima Akter, Sukirno, Robert A. Swick, Natalie K. Morgan, Tamsyn M. Crowley and Amy F. Moss
Understanding the order of limiting amino acids (AA) in reduced-protein (RP) diets for laying hens will facilitate precise feed formulation and ensure that AA requirements are met cost-effectively. The order of the first three limiting AAs?lysine (Lys), ...
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Ahmed O. Abbas, Abdulaziz A. Alaqil, Nancy N. Kamel and Farid S. Nassar
The chicken egg is one of the most globally-consumed animal protein sources with high-quality protein value. However, there is a growing concern about the association between excessive egg consumption and the increasing risk of cardiovascular disease inc...
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Mohammad Shahbazi, Kamyar Mohammadi, Sayed M. Derakhshani and Peter W. G. Groot Koerkamp
Laying hen activities in modern intensive housing systems can dramatically influence the policies needed for the optimal management of such systems. Intermittent monitoring of different behaviors during daytime cannot provide a good overview, since daily...
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