Effects of cage type on performance, welfare, and microbiological properties of laying hens during the molting period and the second production cycle

Onbaşılar, Esin Ebru; Kahraman, Mücahit; Güngör, Ömer Faruk; Kocakaya, Afşin; Karakan, Tuğba; Pirpanahi, Mahlagha; Doğan, Barışhan; Metin, D; Akan, Mehmet; Şehu, Adnan; Elibol, Fatma Kübra Erbay

doi:10.1007/s11250-020-02409-0

Cited by 11 publications

(8 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most obvious manifestations are the regrowth of new feathers, decreased mortality rate, improved eggshell quality [15][16][17][18], and gradual recovery of ELR to SPEP, which is higher than the premolting level [2]. Additionally, the abundance of bacteria in the feces [19] and bone strength [20,21] are also higher than before. Therefore, FM of hens is of substantial importance to increase the utilization life of aging hens.…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic Analysis of Laying Hens Revealed the Role of Aging-Related Genes during Forced Molting

Zhang

Chen

Wen

et al. 2021

Genes

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

Transcriptomic Analysis of Laying Hens Revealed the Role of Aging-Related Genes during Forced Molting

Zhang

Chen

Wen

et al. 2021

Genes

View full text Add to dashboard Cite

show abstract

“…One female chick from each of the BAR-1 hens was randomly selected at the hatch, and it was sacrificed by cervical dislocation. The tibia and femur bones of chick were separated, and weight, length, and width values were determined (Onbaşılar et al, 2018;2020).…”

Section: Hatching Resultsmentioning

confidence: 99%

“…The egg shell microscopic characteristics, the ash, and the Ca levels of shell were determined as explained above. The tibia and femur bones were separated and the weight, length, and width of each of the bones were determined (Onbaşılar et al, 2018;2020).…”

Section: Embryo Developmentmentioning

confidence: 99%

The effects of the breeder index value on the microscopic structure of egg shells, hatching results, and hybrid performance

Kamanli¹,

Demi̇rtaş²,

Onbaşılar

et al. 2021

Trop Anim Health Prod

Self Cite

View full text Add to dashboard Cite

The quality of egg shell and bone properties of hen are important for hen welfare, consumers, and producers. Parameters of the genetic selection have both desirable and undesirable effects among themselves. Until recently, it has been stated that the concept of shell quality is not only about breaking strength, thickness, and weight of shell, but also microscopic properties of the shell. In this study, the effect of index selection including age and weight at sexual maturity, number of eggs and egg weight on eggshell structures, hatching results, and hybrid performance was determined. Ninety Barred Rock 1 (BAR-1) and ninety Rhode Island Red 1 (RIR-1) hens and twenty RIR-1 cocks (46 weeks old) were used. BAR-1 and RIR-1 were classified according to the breeder index value as low and high. Egg quality characteristics, embryo development and hatching results were examined in eggs obtained from these lines. In the hybrid eggs with high breeder index, the thickness of the palisade layer, breaking strength, ash, and Ca level of the shell were lower and cone similarity and egg weight were higher than that with low breeder index. The breaking strength of the egg shell had a significantly positive correlation with the palisade layer thickness of the shell. In addition, the tibia weight of the high breeder index group was lower than that of the low breeder index group. Differences in femur and tibia weights in hybrids with low and high breeder index increased with age. A negative correlation was observed between hatchability and the thickness of the palisade layer. Further studies are needed to determine which selection programs positively affect the thickness of the palisade layer, the Ca level and the breaking strength of the shell, the number of broken eggs, and the tibia weight in layer hybrids.

show abstract

“…Distances of 60 mm for tibia and 40 mm for femur were established between the two fixed points supporting the bone. The maximum force and deformation at maximum force (DMF) were recorded (Onbaşılar et al, 2020; Simske et al, 1991). For mineral analysis, bone samples were defatted using chloroform and methanol (2:1) for 72 h, oven‐dried, ashed, crushed, and digested with 8 ml HCl and 2 ml nitric acid.…”

Section: Methodsmentioning

confidence: 99%

Efficacy of mono‐ and multistrain synbiotics supplementation in modifying performance, caecal fermentation, intestinal health, meat and bone quality, and some blood biochemical indices in broilers

Yalçın

Ramay

Güntürkün³

et al. 2022

Animal Physiology Nutrition

View full text Add to dashboard Cite

The superiority of synbiotics in terms of their biological effects depends primarily on a suitable combination of both components, pro‐biotic and pre‐biotic. The present study was conducted to compare the efficacy of mono‐ and multistrain synbiotics on overall performance, caecal fermentation, intestinal health, meat and bone quality along with some blood biochemical indices in broilers. A total of 231, 1‐day‐old male Ross 308, broiler chicks were randomly assigned to three experimental groups using 11 replicates each and seven chicks/replicate. The dietary treatments included control group with no synbiotic supplementation, monostrain (Maflor) and multistrain (Maflor plus) synbiotic groups with 1 g/kg of added synbiotics each. Synbiotics feeding significantly improved animal performance with a clear impact on meat quality in terms of low‐fat, optimum ultimate pH24, higher water holding capacity, and lower drip and cooking losses. Of the two synbiotics, multistrain seemed to have responded better in modifying small intestinal epithelia and fermentation metabolites, although both synbiotics were comparable in reducing the pathogen load. Load‐bearing capacity of both leg bones (femur and tibia) was also enhanced with synbiotics supplementation, which was also reflected in their mineral profile. The blood serum biochemical analysis showed a reduction in circulating cholesterol and triglycerides levels and an increment in IgA and IgG concentrations. In conclusion, the remarkable efficacy of tested synbiotics in providing higher growth, better meat quality in tandem with the optimum gut environment, lower pathogen load, healthy epithelia, immunomodulation, hypocholesterolemic, and hypotriglyceridemic effects affirms their great potential to be used as feed additives in broiler diets. Contrary to our expectations, the effectiveness of a mono‐strain in comparison to multistrain synbiotic in improving almost all the features investigated was also notable. Further evaluation under challenging conditions should be explicitly conducted to achieve more comprehensive results.

show abstract

Effects of cage type on performance, welfare, and microbiological properties of laying hens during the molting period and the second production cycle

Cited by 11 publications

References 34 publications

Transcriptomic Analysis of Laying Hens Revealed the Role of Aging-Related Genes during Forced Molting

Transcriptomic Analysis of Laying Hens Revealed the Role of Aging-Related Genes during Forced Molting

The effects of the breeder index value on the microscopic structure of egg shells, hatching results, and hybrid performance

Efficacy of mono‐ and multistrain synbiotics supplementation in modifying performance, caecal fermentation, intestinal health, meat and bone quality, and some blood biochemical indices in broilers

Contact Info

Product

Resources

About