Zobrazeno 1 - 10
of 88
pro vyhledávání: '"aged laying hen"'
Autor:
Guangtian Ma, Habtamu Ayalew, Tahir Mahmood, Yves Mercier, Jing Wang, Jing Lin, Shugeng Wu, Kai Qiu, Guanghai Qi, Haijun Zhang
Publikováno v:
Poultry Science, Vol 103, Iss 12, Pp 104415- (2024)
Sulfur metabolites of methionine (Met) and vitamin E (VE) have antioxidant potential and can maintain liver health in chickens. This study explored the underlying mechanisms of Met sources, the ratio of total sulfur amino acids to lysine (TSAA: Lys),
Externí odkaz:
https://doaj.org/article/c14b17a953604fe4a6bff11736d61aca
Autor:
Xin Li, Victoria Anthony Uyanga, Hongchao Jiao, Xiaojuan Wang, Jingpeng Zhao, Yunlei Zhou, Haifang Li, Hai Lin
Publikováno v:
Frontiers in Physiology, Vol 15 (2024)
Dietary calcium supply is essential for bone development and egg production in laying hens. This study investigated the effects of low dietary calcium and lipopolysaccharide (LPS) induced immune challenge in aged laying hens. A total of thirty-two Hy
Externí odkaz:
https://doaj.org/article/0a0cf33450314250b50e3015530be190
Autor:
Qihang Hou, Guang Li, Xianjie Pan, Xiang Zhong, Xiangfei Geng, Xin Yang, Xiaojun Yang, Bingkun Zhang
Publikováno v:
Poultry Science, Vol 103, Iss 6, Pp 103670- (2024)
ABSTRACT: Aging is associated with alterations in gut function, including intestinal inflammation, leaky gut, and impaired epithelial regeneration. Rejuvenating the aged gut is imperative to extend the laying cycle of aged laying hens. Genistein is k
Externí odkaz:
https://doaj.org/article/073e1636a9a44c8db3009625ef91e11e
Publikováno v:
Poultry Science, Vol 103, Iss 5, Pp 103420- (2024)
ABSTRACT: The aim of this study was to investigate the effects of puerarin (Pue), a phytoestrogen, on the production performance, egg quality, endocrine hormones, antioxidant capacity, and intestinal morphology in aged laying hens. A total of 180 Hy-
Externí odkaz:
https://doaj.org/article/e5439a13bfd045e19e2c7c943368f456
Autor:
Ibrahim T. El-Ratel, Mariam M. Amara, Malak M. Beshara, Mohammed F. El Basuini, Sara F. Fouda, Khaled H. El-Kholy, Tarek A. Ebeid, Mahmoud Kamal, Sarah I. Othman, Hassan A. Rudayni, Ahmed A. Allam, Mahmoud Moustafa, Guillermo Tellez-Isaias, Mohamed E. Abd El-Hack, Aml Mekawy
Publikováno v:
Poultry Science, Vol 103, Iss 3, Pp 103453- (2024)
ABSTRACT: The purpose of this investigation was to evaluate the impacts of vitamin A (VA) supplementation in feed at levels of 0 (control), 2,000, 4,000, 6,000, and 8,000 IU VA/kg diet on the reproductive efficiency and antioxidative properties of ag
Externí odkaz:
https://doaj.org/article/932d96eef3124719b8f594a03f612101
Autor:
Zhexi Liu, Yutao Cao, Yue Ai, Xiaonan Yin, Linli Wang, Mengyao Wang, Bingkun Zhang, Zhengxing Lian, Keliang Wu, Yuming Guo, Hongbing Han
Publikováno v:
Animal Nutrition, Vol 10, Iss , Pp 124-136 (2022)
The declines in laying performance during the late production period have adverse effects on the length of the production cycle. Improving the nutrition of laying hens is a crucial measure to reverse this declination. This study investigated the effe
Externí odkaz:
https://doaj.org/article/bfb1b3ac0f6c41deb6196eac3ddb9677
Autor:
Yuechang Ren, Tianyu Zhao, Kaiying Zhang, Zhengqi Zhu, Linkui Li, Yang Li, Shuzhen Jiang, Ning Jiao, Weiren Yang
Publikováno v:
Frontiers in Veterinary Science, Vol 10 (2023)
The objective of this study was to evaluate the effect of replacing dicalcium phosphate (DCP) with mono-dicalcium phosphate (MDCP) to formulate low-phosphorus (P) diets on laying performance, egg quality, phosphorus-calcium metabolism, and bone metab
Externí odkaz:
https://doaj.org/article/453721bf39dd4be38480fe9be6d9d983
Publikováno v:
Poultry Science, Vol 102, Iss 4, Pp 102497- (2023)
ABSTRACT: The objective of the current experiment was to investigate the effect of dietary concentrations of ME and neutral detergent fiber (NDF) on productive performance, egg quality, fatty liver incidence, and hepatic fatty acid metabolism in aged
Externí odkaz:
https://doaj.org/article/ae607db221d44a42867b033262296258
Publikováno v:
Poultry Science, Vol 102, Iss 1, Pp 102258- (2023)
ABSTRACT: We investigated the effects of astaxanthin supplementation on the egg quality, antioxidant capacity, and ovarian aging of aged laying hens. Six groups of 68-wk-old Hy-line brown laying hens with six replications each, fifteen chickens in ea
Externí odkaz:
https://doaj.org/article/44c3b8d45c1744f28cf793f553c50d2f
Publikováno v:
Poultry Science, Vol 102, Iss 1, Pp 102217- (2023)
ABSTRACT: Eggshell is composed of a very ordered and mineralized structure and is important for egg quality. Eggshell strength is particularly important because of its direct association with economic outcomes and egg safety. Various factors related
Externí odkaz:
https://doaj.org/article/08e7746d227b4e77b9b74e3634aacb67