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Zhang L, Cai C, Liu X, Zhang X, An Z, Zhou E, Li J, Li Z, Li W, Sun G, Li G, Kang X, Han R, Jiang R. Multi-Stage Transcriptome Analysis Revealed the Growth Mechanism of Feathers and Hair Follicles during Induction Molting by Fasting in the Late Stage of Egg Laying. BIOLOGY 2023; 12:1345. [PMID: 37887055 PMCID: PMC10603888 DOI: 10.3390/biology12101345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/21/2023] [Accepted: 10/13/2023] [Indexed: 10/28/2023]
Abstract
Induced molting is a common method to obtain a new life in laying hens, in which periodic changes in feathers are the prominent feature. Nevertheless, its precise molecular mechanism remains unclear. In this study, feather and hair follicle samples were collected during fasting-induced physiological remodeling for hematoxylin-eosin staining, hormone changes and follicle traits, and transcriptome sequencing. Feather shedding was observed in F13 to R25, while newborns were observed in R3 to R32. Triiodothyronine and tetraiodothyronine were significantly elevated during feather shedding. The calcium content was significantly higher, and the ash content was significantly lower after the changeover. The determination of hair follicle traits revealed an increasing trend in pore density and a decrease in pore diameter after the resumption of feeding. According to RNA-seq results, several core genes were identified, including DSP, CDH1, PKP1, and PPCKB, which may have an impact on hair follicle growth. The focus was to discover that starvation may trigger changes in thyroid hormones, which in turn regulate feather molting through thyroid hormone synthesis, calcium signaling, and thyroid hormone signaling pathways. These data provide a valuable resource for the analysis of the molecular mechanisms underlying the cyclical growth of hair follicles in the skin during induced molting.
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Affiliation(s)
- Lujie Zhang
- The Shennong Laboratory, Zhengzhou 450002, China; (L.Z.); (C.C.); (X.L.); (W.L.); (G.S.); (G.L.); (X.K.)
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Chunxia Cai
- The Shennong Laboratory, Zhengzhou 450002, China; (L.Z.); (C.C.); (X.L.); (W.L.); (G.S.); (G.L.); (X.K.)
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Xinxin Liu
- The Shennong Laboratory, Zhengzhou 450002, China; (L.Z.); (C.C.); (X.L.); (W.L.); (G.S.); (G.L.); (X.K.)
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Xiaoran Zhang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Zhiyuan An
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Enyou Zhou
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Jianzeng Li
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Zhuanjian Li
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Wenting Li
- The Shennong Laboratory, Zhengzhou 450002, China; (L.Z.); (C.C.); (X.L.); (W.L.); (G.S.); (G.L.); (X.K.)
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Guirong Sun
- The Shennong Laboratory, Zhengzhou 450002, China; (L.Z.); (C.C.); (X.L.); (W.L.); (G.S.); (G.L.); (X.K.)
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Guoxi Li
- The Shennong Laboratory, Zhengzhou 450002, China; (L.Z.); (C.C.); (X.L.); (W.L.); (G.S.); (G.L.); (X.K.)
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Xiangtao Kang
- The Shennong Laboratory, Zhengzhou 450002, China; (L.Z.); (C.C.); (X.L.); (W.L.); (G.S.); (G.L.); (X.K.)
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Ruili Han
- The Shennong Laboratory, Zhengzhou 450002, China; (L.Z.); (C.C.); (X.L.); (W.L.); (G.S.); (G.L.); (X.K.)
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
| | - Ruirui Jiang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; (X.Z.); (Z.A.); (E.Z.); (J.L.); (Z.L.)
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Wang P, Gong Y, Li D, Zhao X, Zhang Y, Zhang J, Geng X, Zhang X, Tian Y, Li W, Sun G, Han R, Kang X, Li Z, Jiang R. Effect of induced molting on ovarian function remodeling in laying hens. Poult Sci 2023; 102:102820. [PMID: 37329628 PMCID: PMC10404790 DOI: 10.1016/j.psj.2023.102820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/22/2023] [Accepted: 05/26/2023] [Indexed: 06/19/2023] Open
Abstract
Induced molting (IM) can restore the laying rate of aged laying hens to the peak level of laying and rejuvenate ovarian function for the second laying cycle. To explore the mechanism of ovarian function remodeling during IM in laying hens, in this study, ninety 71-wk-old laying lady hens with 60% laying rate and uniform weight were selected for molting induction by fasting. Samples (serum and fresh ovarian tissue) were collected on the day before fasting (F0), the 3rd and 16th days of fasting (F3, F16), and the 6th, 15th, 32nd days of refeeding (R6, R15, and R32), and the number of follicles in each period was counted. Then, the reproductive hormone levels in serum and antioxidant levels in ovarian tissues were detected at different stages, and the gene expression of the KIT-PI3K-PTEN-AKT pathway and GDF-9 in ovaries was measured by qRT-PCR. The results showed that the laying rate increased rapidly after refeeding and returned to the prefasting level by R32. At F16 and R6, the number of mature follicles significantly decreased; the number of primary and secondary follicles significantly increased; the contents of follicle stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2), and progesterone (P4) in serum decreased; the relative expression of KIT, PI3K, AKT, and GDF-9 significantly increased; and that of PTEN significantly decreased. At R15 and R32, except for GDF-9, which maintained a high expression state, other indicators showed opposing trends to those observed at F16 and R6. In conclusion, IM activated the KIT-PI3K-PTEN-AKT signaling pathway and promoted the activation of primordial follicles during the fasting period and early resumption of feeding; gonadotropin secretion increased gradually, which promoted the rapid development of primary and secondary follicles to mature follicles and ovulation. This study explained the mechanism of ovarian function remodeling in the process of IM and provided a theoretical basis for improving the ovarian function of laying hens and optimizing the IM program.
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Affiliation(s)
- Pengyu Wang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Yujie Gong
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Donghua Li
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Xinlong Zhao
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Yihui Zhang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Jun Zhang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Xiaoqing Geng
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Xiaoran Zhang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Yadong Tian
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Wenting Li
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Guirong Sun
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Ruili Han
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Xiangtao Kang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Zhuanjian Li
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China
| | - Ruirui Jiang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China.
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Lei M, Shi L, Huang C, Yang Y, Zhang B, Zhang J, Chen Y, Wang D, Hao E, Xuan F, Chen H. Effects of non-fasting molting on performance, oxidative stress, intestinal morphology, and liver health of laying hens. Front Vet Sci 2023; 10:1100152. [PMID: 36925605 PMCID: PMC10011624 DOI: 10.3389/fvets.2023.1100152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/13/2023] [Indexed: 03/08/2023] Open
Abstract
Animal welfare concerns in laying-hen production facilities have necessitated research on alternative strategies for improving egg production and hen health. At present, most laying-hen facilities in China use the fasting method, but with international emphasis on animal welfare, scholars have begun to find ways to improve production efficiency while ensuring animal welfare standards are adhered to. Therefore, this study investigated the effects of non-fasting molting on production performance, oxidative stress, intestinal morphology, and liver health of laying hens. A total of 180 healthy 90-week-old Dawu Jinfeng laying hens with similar body weights and laying rates (76 ± 2%) were randomly divided into three groups, with five replicates per group and 12 hens per replicate. The hens in the experimental group (NF) were molted using the non-fasting method, the negative control group (C) was not treated with centralized molting, and the positive control group (F) was molted using the fasting method. The results showed that: (1) During the molting period, the laying rate in the NF group (10.58%) decreased and was significantly lower than that in the other two groups (P < 0.05). During the secondary laying peak period, the laying rate in the NF group was highest (89.71%); significantly higher than that in the C group (P < 0.05). (2) During the molting period, compared to the C group, the NF group showed a significant decrease and increase in the total antioxidant capacity (T-AOC) and superoxide dismutase (T-SOD) activity, respectively (P < 0.05). During the secondary laying peak period, the T-SOD activity of the NF group was significantly lower than that of the C group (P < 0.05). (3) During the molting period, the villus height (VH) and the ratios of VH to crypt depth (V/C) of the duodenum, jejunum, and ileum in the NF group were significantly lower than those in the C group (P < 0.05). At the secondary laying peak period, the jejunum V/C was significantly higher than that in the C group (P < 0.05), whereas in the duodenum and ileum it increased but not significantly (P > 0.05). (4) During the molting period, serum glutathione transaminase (AST) and glutathione alanine transaminase (ALT) activities were significantly higher (P < 0.05), and very low-density lipoprotein (VLDL) content and liver weight were significantly lower (P < 0.05) in the non-fasted and fasted groups. However, there was a low degree of liver injury (cell boundary still visible) in the NF group. At the secondary laying peak period, there was no significant difference (P > 0.05) in the indices among the three groups and the liver returned to normal. In summary, non-fasting molting can improve the production performance of laying hens in the later stages, ensure the welfare and health of animals, and provide a theoretical basis for the efficient production of laying hens.
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Affiliation(s)
- Meng Lei
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Lei Shi
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Chenxuan Huang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Yawei Yang
- Yangling Hongyan Molting Research Institute, Yangling, China
| | - Bo Zhang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China.,Agricultural and Animal Husbandry Technology Extension Station in Tong Town, Yulin, Shaanxi, China
| | - Jianshe Zhang
- Gaocheng District Animal Husbandry Work Station, Shijiazhuang, China
| | - Yifan Chen
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Dehe Wang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Erying Hao
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Fengling Xuan
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Hui Chen
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
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Zhang J, Geng X, Zhang Y, Zhao X, Zhang P, Sun G, Li W, Li D, Han R, Li G, Tian Y, Liu X, Kang X, Jiang R. Interaction Between Cecal Metabolites and Liver Lipid Metabolism Pathways During Induced Molting in Laying Hens. Front Physiol 2022; 13:862721. [PMID: 35677092 PMCID: PMC9169092 DOI: 10.3389/fphys.2022.862721] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 03/23/2022] [Indexed: 11/23/2022] Open
Abstract
Moult is a normal physiological phenomenon in poultry. Induced molting (IM) is the most widely used and economical molting technique. By inducing moult, the laying hens can grow new feathers during the next laying cycle and improve laying performance. However, the lack of energy supply has a huge impact on both the liver and intestines and acts on the intestines and liver through the “gut-liver axis”. More importantly, lipid metabolism in the liver is closely related to the laying performance of laying hens. Therefore, in this study, cecal metabolites and liver transcriptome data during IM of laying hens at the late stage of laying (stop feeding method) were analyzed together to reveal the regulatory mechanism of “gut-liver axis” affecting the laying performance of laying hens from the perspective of lipid metabolism. Transcriptome analysis revealed that 4,796 genes were obtained, among which 2,784 genes had significant differences (p < 0.05). Forty-nine genes were associated with lipid metabolism, and five core genes (AGPAT2, SGPL1, SPTLC1, PISD, and CYP51A1) were identified by WGCNA. Most of these differential genes are enriched in steroid biosynthesis, cholesterol metabolism, drug metabolism—cytochrome P450, synthesis and degradation of ketone bodies, PPAR signaling pathway, and bile secretion. A total of 96 differential metabolites were obtained by correlating them with metabolome data. Induced moult affects laying performance by regulating genes related to lipid metabolism, and the cecal metabolites associated with these genes are likely to regulate the expression of these genes through the “enterohepatic circulation”. This experiment enriched the theoretical basis of induced moult and provided the basis for prolonging the feeding cycle of laying hens.
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Affiliation(s)
- Jun Zhang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Xiaoqing Geng
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Yihui Zhang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Xinlong Zhao
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Pengwei Zhang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Guirong Sun
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Wenting Li
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Donghua Li
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Ruili Han
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Guoxi Li
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Yadong Tian
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Xiaojun Liu
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Xiangtao Kang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
| | - Ruirui Jiang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, Henan Agricultural University, Zhengzhou, China
- *Correspondence: Ruirui Jiang,
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Transcriptomic Analysis of Laying Hens Revealed the Role of Aging-Related Genes during Forced Molting. Genes (Basel) 2021; 12:genes12111767. [PMID: 34828373 PMCID: PMC8621152 DOI: 10.3390/genes12111767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 10/30/2021] [Accepted: 11/04/2021] [Indexed: 12/03/2022] Open
Abstract
Molting in birds provides us with an ideal genetic model for understanding aging and rejuvenation since birds present younger characteristics for reproduction and appearance after molting. Forced molting (FM) by fasting in chickens causes aging of their reproductive system and then promotes cell redevelopment by providing water and feed again. To reveal the genetic mechanism of rejuvenation, we detected blood hormone indexes and gene expression levels in the hypothalamus and ovary of hens from five different periods during FM. Three hormones were identified as participating in FM. Furthermore, the variation trends of gene expression levels in the hypothalamus and ovary at five different stages were found to be basically similar using transcriptome analysis. Among them, 45 genes were found to regulate cell aging during fasting stress and 12 genes were found to promote cell development during the recovery period in the hypothalamus. In addition, five hub genes (INO80D, HELZ, AGO4, ROCK2, and RFX7) were identified by WGCNA. FM can restart the reproductive function of aged hens by regulating expression levels of genes associated with aging and development. Our study not only enriches the theoretical basis of FM but also provides insights for the study of antiaging in humans and the conception mechanism in elderly women.
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Mert N, Yildirim BA. Biochemical Parameters and Histopathological Findings in the Forced Molt Laying Hens. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2016. [DOI: 10.1590/1806-9061-2015-0032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- N Mert
- University of Yuzuncu Yil, Turkey
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Hafid K, Gagaoua M, Boudechich HR, Rabah SN, Ziane F, Sellama M, Becila S, Boudjellal A. A Comparison of the Carcass and Meat Quality of ISA (F15) Spent Hens Slaughtered at Two Different Ages. ACTA ACUST UNITED AC 2016. [DOI: 10.3923/ajft.2016.134.142] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Chen J, Tang X, Zhang Y, Ma H, Zou S. Effects of maternal treatment of dehydroepiandrosterone (DHEA) on serum lipid profile and hepatic lipid metabolism-related gene expression in embryonic chickens. Comp Biochem Physiol B Biochem Mol Biol 2010; 155:380-6. [DOI: 10.1016/j.cbpb.2009.12.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2009] [Revised: 12/31/2009] [Accepted: 12/31/2009] [Indexed: 10/20/2022]
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Chen K, Lee T, Chen T, Chiou P. Effect of caponization and different exogenous androgen on hepatic lipid and β-oxidase of male chickens. Poult Sci 2009; 88:1033-9. [DOI: 10.3382/ps.2008-00146] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Tang X, Ma H, Zou S, Chen W. Effects of Dehydroepiandrosterone (DHEA) on Hepatic Lipid Metabolism Parameters and Lipogenic Gene mRNA Expression in Broiler Chickens. Lipids 2007; 42:1025-33. [PMID: 17704960 DOI: 10.1007/s11745-007-3104-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2007] [Accepted: 07/10/2007] [Indexed: 11/29/2022]
Abstract
The aim of the present study was to identify the effects of dehydroepiandrosterone (DHEA) on hepatic lipid metabolism parameters and lipogenic gene mRNA expression in broiler chickens. A total of 72 1-day-old broiler chicks received a common basal diet with DHEA added at either 0 (control), 5 or 20 mg/kg feed. In the present study, the hepatic triglyceride (TG) concentration was significantly lower in male and female broilers that had bed administered DHEA than in control birds. In contrast, DHEA administration caused a marked rise in the hepatic non-esterified fatty acid (NEFA) concentration in both male and female broilers and also increased lipase (HL) activity in male broilers, while in female birds, no significant differences were observed in HL activity. The expression of peroxisome proliferators-activated receptor alpha (PPARalpha) and carnitine palmitoyl transferase I (CPTI) mRNA was decidedly enhanced following treatment with DHEA, and a similar tendency was also observed in the expression of acyl-Coenzyme A oxidase 1 (ACOX1). However, no significant differences were observed in the expression of either sterol regulatory element binding protein-1c (SREBP-1c) or acetyl CoA carboxylase (ACC) mRNA, except for a decline in the expression of ACC in females treated with 5 mg DHEA/kg. Numerous peroxisomes without a core and an increased number of peroxisomes were evident during morphological observations of broiler livers, in animals that had been treated with DHEA. Overall, the results of the present study indicated that DHEA accelerated lipid catabolism by direct regulation of hepatic lipid metabolism and by induction of relevant gene expression.
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Affiliation(s)
- Xue Tang
- Key Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
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SZABÓ ANDRÁS, FÉBEL HEDVIG, SUGÁR LÁSZLÓ, ROMVÁRI RÓBERT. FATTY ACID REGIODISTRIBUTION ANALYSIS OF DIVERGENT ANIMAL TRIACYLGLYCEROL SAMPLES ? A POSSIBLE APPROACH FOR SPECIES DIFFERENTIATION. ACTA ACUST UNITED AC 2007. [DOI: 10.1111/j.1745-4522.2006.00071.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bass PD, Hooge DM, Koutsos EA. Dietary thyroxine induces molt in chickens (Gallus gallus domesticus). Comp Biochem Physiol A Mol Integr Physiol 2007; 146:335-41. [PMID: 17208028 DOI: 10.1016/j.cbpa.2006.11.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2006] [Revised: 11/08/2006] [Accepted: 11/09/2006] [Indexed: 10/23/2022]
Abstract
Thyroxine increases during a molt in wild and captive birds, and thyroidectomy prevents induction of molt. This trial examined the effect of dietary thyroxine on molt induction molt in chickens (laying hens, 59 weeks of age). In a completely randomized design (n=15 hens/replication; 6 replications/treatment), hens were randomly assigned to either a traditional molting program consisting of feed withdrawal (FWD), or to diets containing 40 mg thyroxine/kg diet (HT), 20 mg thyroxine/kg diet (LT), or 40 mg thyroxine from thyroactive iodinated casein/kg diet (TIC). The molting treatment lasted 7-13 d, until egg production reached 0%. After molt induction, birds had ad libitum access to the same diet, until egg production was re-initiated and maximized ( approximately 56 d). All treatments induced molt, based upon cessation of egg laying and regression of ovary and oviduct. Birds on FWD treatment lost more body weight during the molting period, but gained more after molt compared to thyroxine treatments (P<0.01 for each), although all body weights were similar when egg production was maximized. Data demonstrate that oral thyroxine, in purified or non-purified form, induces a molt and may enhance animal well-being by reducing the need for FWD.
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Affiliation(s)
- P D Bass
- California Polytechnic State University, Animal Science Department, 1 Grand Ave., San Luis Obispo, CA 93407, USA
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Lin H, Decuypere E, Buyse J. Acute heat stress induces oxidative stress in broiler chickens. Comp Biochem Physiol A Mol Integr Physiol 2006; 144:11-7. [PMID: 16517194 DOI: 10.1016/j.cbpa.2006.01.032] [Citation(s) in RCA: 340] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2005] [Revised: 01/13/2006] [Accepted: 01/18/2006] [Indexed: 11/21/2022]
Abstract
The stress responses and possible oxidative damage in plasma, liver and heart were investigated in broiler chickens acutely exposed to high temperature. Eighty 5-week old broiler chickens were exposed to 32 degrees C for 6h. The extent of lipid peroxidation, activities of superoxide dismutase and total antioxidant power in plasma, liver and heart tissues were investigated. Meanwhile, the blood metabolites such as glucose, urate, triiodothyronine, thyroxine, corticosterone, ceruloplasmin and creatine kinase were measured before and after 3 and 6h of heat exposure. The results showed that oxidative stress could be induced in 5-week old broiler chickens by acute heat exposure (32 degrees C, 6h). The results suggest that the elevated body temperature can induce the metabolic changes that are involved in the induction of oxidative stress. The liver is more susceptible to oxidative stress than heart during acute heat exposure in broiler chickens. The oxidative stress should be considered as part of the stress response of broiler chickens to heat exposure.
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Affiliation(s)
- Hai Lin
- Department of Animal Science, Shandong Agricultural University, Taian, Shandong 271018, PR China
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