Differences in the mucosal surface barrier formed by mucin in the lower oviductal segments between laying and molting hens

Ariyadi, Bambang; Isobe, Naoki; Yoshimura, Y.

doi:10.3382/ps.2011-02079

Cited by 17 publications

(10 citation statements)

References 28 publications

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“…The protective role of MUC2 in innate host defense has been demonstrated in chickens (Horn et al, 2009; Jiang et al, 2013; Zhang et al, 2014). Ariyadi et al (2012) reported that the mRNA expression level of mucin is important for the formation of the mucosal barrier in the oviduct of laying hens, which is responsible for defensive functions that are essential for maintaining laying hens with good health during the laying phase. In the present study, supplementation with Thr significantly decreased the expression of MUC2 in the uterus of Chinese yellow-feathered broiler breeder hens ( P < 0.05).…”

Section: Resultsmentioning

confidence: 99%

Effects of dietary threonine supplementation on productivity and expression of genes related to protein deposition and amino acid transportation in breeder hens of yellow-feathered chicken and their offspring

et al. 2019

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This study investigated the effects of the dietary threonine (Thr) levels on the performance, offspring traits, embryo amino acid transportation, and protein deposition in breeder hens of yellow-feathered chickens. In total, 720 breeder hens of Lingnan yellow-feathered chickens were randomly assigned to 1 of 6 dietary treatments, with 6 replicates per treatment (20 birds per replicate). The breeder hens were fed either basal diet (Thr = 0.38%) or basal diet supplemented with 0.12, 0.24, 0.36, 0.48, or 0.60% Thr from 197 to 266 D. There was a positive response in terms of the laying rate after adding different levels of Thr to the diet, but no significant effects on the average daily gain, average daily egg weight, feed conversion ratio, average broken eggs, and unqualified egg rate (P > 0.05). However, the eggshell strength and eggshell percentage decreased in a linear manner as the dietary Thr concentration increased (P = 0.05). Dietary supplementation with Thr had significant effects on the expression of mucin 2 (MUC2) in the uterus and zonula occludens protein 1 (ZO-1) in the duodenum of breeders (P < 0.05). In chick embryos at embryonic age 18 D, significant upregulation of poultry target of rapamycin (pTOR) occurred in the liver and breast muscle, as well as threonine dehydrogenase (TDH) in the thigh, and aminopeptidase (ANPEP) (P < 0.05) in the duodenum and ileum due to dietary Thr supplementation, but there were no effects on MUC2 expression in the duodenum and ileum (P > 0.05). The livability of the progeny broilers tended to increase with the dietary Thr concentration (quadratic, P = 0.08). Thus, dietary supplementation with Thr had positive effects on the laying production by breeder hens and offspring performance, and it also regulated the expression levels of genes related to amino acid transportation and protein deposition. The optimal dietary Thr concentration that maximized the laying rate in yellow-feathered chicken breeders aged 197 to 266 D was 0.68% according to quadratic regression analysis.

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Section: Resultsmentioning

confidence: 99%

Effects of dietary threonine supplementation on productivity and expression of genes related to protein deposition and amino acid transportation in breeder hens of yellow-feathered chicken and their offspring

et al. 2019

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“…Moulting and heat stress are two distinct environmental challenges for laying hens. They both increase GC secretion and decrease egg production (Rozenboim et al., ; Sundaresan et al., ; Ariyadi et al., ), but the former will inevitably reduce circulating oestrogen (Berry, ; Meng et al., ), while the latter may have little impact within moderate limits (Franco‐Jimenez and Beck, ). These stressful conditions provide a research basis for determining the involvement of altered oestrogen level in GC‐sensitive regulation of OVA expression.…”

Section: Introductionmentioning

confidence: 99%

Ovalbumin expression in the oviduct magnum of hens is related to the rate of egg laying and shows distinct stress‐type‐specific responses

Zhao

Zhang

Jiao

et al. 2016

Animal Physiology Nutrition

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Three trials were performed to evaluate the association of ovalbumin (OVA) abundance in the oviduct magnum with egg production and the underlying regulatory mechanism by glucocorticoids. In trial 1, twenty Hy-Line Brown layers (56-60 weeks of age) with different combinations (n = 5/combination) of laying rate (high or low) and egg weight (high or low) were selected from an initial group of 300. An upregulated expression of magnum OVA was observed (p < 0.05) in hens with higher laying rate, regardless of egg weight. In trial 2, eighty Hy-Line Brown layers (80-90 weeks of age) were subjected to the forced moulting (n = 8). The abundance of OVA transcript and protein in the magnum was significantly decreased during moulting (p < 0.01), and the same was true for laying rate (p < 0.01) and serum oestrogen (p < 0.05). In trial 3, forty-five 56-week-old Hy-Line Brown layers were kept individually (n = 15) in the following conditions for 10 days: constant optimal ambient temperature at 23 °C and ad libitum feeding, high ambient temperature at 32 °C for 6 h/day (10:00-16:00) and ad libitum feeding (32AL), and constant optimal ambient temperature at 23 °C and pair-fed to the 32AL hens. In spite of elevated corticosterone in circulation, OVA synthesis, blood oestrogen and laying rate were not affected by heat exposure (p > 0.05). These results allow concluding that OVA expression in the oviduct magnum of hens is related to the rate of egg laying and shows distinct stress-type-specific responses.

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“…The removal of feed has been used most frequently in commercial poultry farms to induced molting in hens; however, this practice has come under criticism from animal welfare advocacy groups [6]. Furthermore, molting through feed withdrawal leads to greater susceptibility of hens to salmonella infection as compared to that for laying hens[7], [8]. Therefore, several alternative methods for inducing molting without starvation have been developed.…”

Section: Introductionmentioning

confidence: 99%

Recrudescence Mechanisms and Gene Expression Profile of the Reproductive Tracts from Chickens during the Molting Period

et al. 2013

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The reproductive system of chickens undergoes dynamic morphological and functional tissue remodeling during the molting period. The present study identified global gene expression profiles following oviductal tissue regression and regeneration in laying hens in which molting was induced by feeding high levels of zinc in the diet. During the molting and recrudescence processes, progressive morphological and physiological changes included regression and re-growth of reproductive organs and fluctuations in concentrations of testosterone, progesterone, estradiol and corticosterone in blood. The cDNA microarray analysis of oviductal tissues revealed the biological significance of gene expression-based modulation in oviductal tissue during its remodeling. Based on the gene expression profiles, expression patterns of selected genes such as, TF, ANGPTL3, p20K, PTN, AvBD11 and SERPINB3 exhibited similar patterns in expression with gradual decreases during regression of the oviduct and sequential increases during resurrection of the functional oviduct. Also, miR-1689* inhibited expression of Sp1, while miR-17-3p, miR-22* and miR-1764 inhibited expression of STAT1. Similarly, chicken miR-1562 and miR-138 reduced the expression of ANGPTL3 and p20K, respectively. These results suggest that these differentially regulated genes are closely correlated with the molecular mechanism(s) for development and tissue remodeling of the avian female reproductive tract, and that miRNA-mediated regulation of key genes likely contributes to remodeling of the avian reproductive tract by controlling expression of those genes post-transcriptionally. The discovered global gene profiles provide new molecular candidates responsible for regulating morphological and functional recrudescence of the avian reproductive tract, and provide novel insights into understanding the remodeling process at the genomic and epigenomic levels.

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Differences in the mucosal surface barrier formed by mucin in the lower oviductal segments between laying and molting hens

Cited by 17 publications

References 28 publications

Effects of dietary threonine supplementation on productivity and expression of genes related to protein deposition and amino acid transportation in breeder hens of yellow-feathered chicken and their offspring

Effects of dietary threonine supplementation on productivity and expression of genes related to protein deposition and amino acid transportation in breeder hens of yellow-feathered chicken and their offspring

Ovalbumin expression in the oviduct magnum of hens is related to the rate of egg laying and shows distinct stress‐type‐specific responses

Recrudescence Mechanisms and Gene Expression Profile of the Reproductive Tracts from Chickens during the Molting Period

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