Yeast culture promotes the production of aged laying hens by improving intestinal digestive enzyme activities and the intestinal health status

Zhang, Jiacai; Chen, Peng; Zhang, Cong; Khalil, Mahmoud Mohamed; Zhang, Niya; Qi, Desheng; Wang, Youwei; Sun, Luo

doi:10.1016/j.psj.2019.11.017

Cited by 38 publications

(41 citation statements)

References 45 publications

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“…Based on the observations of declined intestinal barrier function and compromised digestive physiology of aging laying hens, absorbed nutrients that involved in the formation of eggs might change, and it can be one of the major reasons for the poor egg quality of old layers ( Zhang et al., 2020 ). In agreement with a previous study ( Silversides and Scott, 2001 ), egg weight was observed to increase with age in the present experiment, and the higher weight ratio of yolk to white might contribute to this effect of aging on egg weight ( Ahn et al., 1997 ).…”

Section: Discussionmentioning

confidence: 99%

A comparison of intestinal integrity, digestive function, and egg quality in laying hens with different ages

Chen

Jin

et al. 2021

Poultry Science

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Intestinal integrity, digestive enzyme activity, nutrient utilization, and egg quality of laying hens at different ages were evaluated and compared in this study. A total of 192 Hy-line Brown laying hens at 195-d-old (D195 group), 340-d-old (D340 group), and 525-d-old (D525 group) were allocated into one of 3 groups in accordance with their ages. Each group had 8 replicates of 8 birds each, and all birds were fed a maize-soybean meal basal diet for a 2-wk experiment. Compared with the D195 group, intestinal villus height and ratio of villus height to crypt depth, as well as serum D-lactate content increased in the D525 group ( P < 0.05). The sucrase and maltase activities in the jejunal mucosa, amylase activity in the pancreas, and trypsin activity in the jejunal chyme of 525-d-old hens were lower than their 195-d-old counterparts ( P < 0.05). In addition, there was a decline of trypsin and lipase activities in the ileal chyme of hens from D525 group in comparison with D195 or D340 group ( P < 0.05). Apparent retention of dry matter and crude protein of birds in D340 and D525 group decreased when compared with the D195 group ( P < 0.05). Moreover, birds in the D525 group exhibited a lower level of ether extract retention, and higher contents of several excreted amino acids than those in the D195 group ( P < 0.05). Compared with the D195 group, eggs harvested from D525 group exhibited lower albumen height, eggshell strength and thickness, and a higher egg weight ( P < 0.05). In conclusion, increased intestinal permeability (higher serum D-lactate content), compromised digestive function (lower digestive enzyme activities and apparent nutrient retention, and higher concentrations of excreted amino acids), and poor egg quality (lower albumen height, eggshell strength, and thickness) were observed with increasing age in the laying hens.

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Section: Discussionmentioning

confidence: 99%

A comparison of intestinal integrity, digestive function, and egg quality in laying hens with different ages

Chen

Jin

et al. 2021

Poultry Science

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“…All birds were allowed access to the mash diets and water ad libitum for the 12-week exposure period. Feed intake, egg weight, and bird mortalities were recorded daily [ 49 ]. The feed/egg ratio, egg production rate, and interior egg quality were calculated every four weeks.…”

Section: Methodsmentioning

confidence: 99%

“…The feed/egg ratio, egg production rate, and interior egg quality were calculated every four weeks. Eggshell quality and egg mycotoxin concentrations were measured on the last day of the twelfth week [ 49 ]. At the end of the feeding trial, 10 birds from each group were slaughtered to collect blood samples, duodenum, jejunum, and ileum for serological and histological examination, as previously described [ 9 ].…”

Section: Methodsmentioning

confidence: 99%

Mitigation Effects of Bentonite and Yeast Cell Wall Binders on AFB1, DON, and OTA Induced Changes in Laying Hen Performance, Egg Quality, and Health

Zhao

Feng

Wei

et al. 2021

Toxins

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The objective of this study was to evaluate the efficacy of mycotoxin binders in reducing the adverse effects of co-occurring dietary aflatoxin B1 (AFB1), deoxynivalenol (DON) and ochratoxin A (OTA) on laying hens. Three hundred and sixty 26-week-old Roman laying hens were randomly allocated into four experimental groups with 10 replicates of nine birds each. The four groups received either a basal diet (BD; Control), a BD supplemented with 0.15 mg/kg AFB1 + 1.5 mg/kg DON + 0.12 mg/kg OTA (Toxins), a BD + Toxins with Toxo-HP binder (Toxins + HP), or a BD + Toxins with TOXO XL binder (Toxins + XL) for 12 weeks. Compared to the control, dietary supplementation of mycotoxins decreased (P < 0.10) total feed intake, total egg weight, and egg-laying rate, but increased feed/egg ratio by 2.5–6.1% and mortality during various experimental periods. These alterations induced by mycotoxins were alleviated by supplementation with both TOXO HP and XL binders (P < 0.10). Furthermore, dietary mycotoxins reduced (P < 0.05) eggshell strength by 12.3% and caused an accumulation of 249 μg/kg of DON in eggs at week 12, while dietary supplementation with TOXO HP or XL mitigated DON-induced changes on eggshell strength and prevented accumulation of DON in eggs (P < 0.05). Moreover, dietary mycotoxins increased relative liver weight, but decreased spleen and proventriculus relative weights by 11.6–22.4% (P < 0.05). Mycotoxin exposure also increased alanine aminotransferase activity and reduced immunoglobulin (Ig) A, IgM, and IgG concentrations in serum by 9.2–26.1% (P < 0.05). Additionally, mycotoxin exposure induced histopathological damage and reduced villus height, villus height/crypt depth, and crypt depth in duodenum, jejunum and (or) ileum (P < 0.05). Notably, most of these histological changes were mitigated by supplementation with both TOXO HP and XL (P < 0.05). In conclusion, the present study demonstrated that the mycotoxin binders TOXO HP and XL can help to mitigate the combined effects of AFB1, DON, and OTA on laying hen performance, egg quality, and health.

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“…Several experiments have suggested that YC has a positive effect on layers and broilers. For example, Zhang J.C. et al (2020) reported that YC addition at 3.0 g/kg of feed improves the performance of aged layers by upregulating intestinal digestive enzyme activity and intestinal health-related gene expression. Another study in broilers showed that dietary YC supplementation at 0.1 g/kg increases daily weight gain and reduces Campylobacter in the cecum ( Froebel et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

“…Further, studies have also reported that this immunity induced by YC is passed on to offspring and reduces symptoms of coccidiosis infection ( Lu et al, 2019 ; Sun and Kim, 2019 ). In addition, some previous studies have shown that YC administration positively affects poultry laying performance and intestinal health ( Zhang J.C. et al, 2020 ). We suspect that this is because of improvements within the intestinal microbiota community, which then increase the proportion of beneficial microorganisms and inhibit the reproduction of harmful microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Yeast Culture Improves Egg Quality and Reproductive Performance of Aged Breeder Layers by Regulating Gut Microbes

et al. 2021

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This study aimed to investigate the effects of dietary yeast culture (YC) supplementation on egg production, egg quality, reproductive performance, immune functions, antioxidant capacity, and intestinal microbial structure of aged hens. A total of 224 Hy-Line Brown layers (54 weeks old) were randomly assigned to two dietary treatments. The control group was fed a basal diet and the YC group was supplemented with YC at 2.0 g/kg of their diet. Each group had seven replicates with 16 hens each. The study was conducted over a period of 8 weeks. Results indicated that YC addition had no significant effect on laying performance. However, it significantly improved egg quality and hatching rate, enhanced ileum crude fat digestibility, increased the serum parameters of lysozyme (LZM) and total antioxidation capacity (T-AOC) (P < 0.05), and reduced serum aspartate aminotransferase (AST) levels (P < 0.05). Using 16S rRNA analysis, we found that addition of YC significantly altered ileum microbial composition. Linear discriminant analysis of effect size (LEfSe) showed significant enrichment of Bacilli and Lactobacilli in the YC group. PICRUSt analysis of the ileal microbiota found that glutathione metabolism, ubiquinone, and other terpenoid-quinone biosynthesis and lipopolysaccharide biosynthesis protein pathways were highly enriched in the YC group compared with the basal diet group. In summary, the addition of YC can improve egg quality, immune functions, antioxidant capacity, reproduction efficiency, and digestive absorption by increasing the abundance of Lactobacilli and Bacilli. Furthermore, it also improves the biosynthesis of lipopolysaccharide proteins, glutathione metabolism, and the synthesis of ubiquinone and other terpenoid-quinone metabolic pathways.

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Yeast culture promotes the production of aged laying hens by improving intestinal digestive enzyme activities and the intestinal health status

Cited by 38 publications

References 45 publications

A comparison of intestinal integrity, digestive function, and egg quality in laying hens with different ages

A comparison of intestinal integrity, digestive function, and egg quality in laying hens with different ages

Mitigation Effects of Bentonite and Yeast Cell Wall Binders on AFB1, DON, and OTA Induced Changes in Laying Hen Performance, Egg Quality, and Health

Yeast Culture Improves Egg Quality and Reproductive Performance of Aged Breeder Layers by Regulating Gut Microbes

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