scholarly journals Keel Bone Damage in Laying Hens—Its Relation to Bone Mineral Density, Body Growth Rate and Laying Performance

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1546
Author(s):  
Christin Habig ◽  
Martina Henning ◽  
Ulrich Baulain ◽  
Simon Jansen ◽  
Armin Manfred Scholz ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Growth Rate ◽  
Bone Mineral ◽  
Laying Hens ◽  
Bone Fractures ◽  
Body Growth ◽  
Mineral Density ◽  
High Performing ◽  
Laying Performance ◽  
Bone Damage

Keel bone damage is an important animal welfare problem in laying hens. Two generations of four layer lines, differing in phylogenetic background and performance level and kept in single cages or floor pens were weighed and scored for keel bone deformities (KBD) during the laying period. KBD, keel bone fractures (KBF) and the bone mineral density (BMD) of the keels were assessed post mortem. For BMD, relationships to laying performance and body growth were estimated. Caged hens showed more deformities, but fewer fractures and a lower BMD of the keel bone than floor-housed hens. White-egg layers had a lower BMD (0.140–0.165 g/cm2) and more KBD than brown-egg layers (0.179–0.184 g/cm2). KBF occurred more often in the high-performing lines than the moderate-performing ones. However, in the high-performing lines, BMD was positively related to total egg number from 18 to 29 weeks of age. The adult body weight derived from fitted growth curves (Gompertz function) had a significant effect (p < 0.001) on keels’ BMD. The study contributes to the understanding of predisposing factors for keel bone damage in laying hens. It showed that the growth rate has a rather subordinate effect on keels’ BMD, while the BMD itself greatly affects KBD.

scholarly journals 309 Effects of dietary supplying icariin on the bone metabolism and the laying performance in caged laying hens

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 11-11
Author(s):  
Jie Huang ◽  
Lei Zhang ◽  
Zhongxin Zhou
Keyword(s):  
Bone Mineral Density ◽  
Bone Metabolism ◽  
Bone Mineral ◽  
Laying Hens ◽  
Egg Quality ◽  
Control Group ◽  
Tartrate Resistant Acid Phosphatase ◽  
Mineral Density ◽  
Laying Performance ◽  
Serum Biochemical

Abstract Icariin, a flavonol glycoside, is one of major active ingredients of the traditional Chinese medicine Herba epimedii. Icariin has been reported to successfully treat the osteoporosis of the rat. However, effects of icariin on the osteoporosis in caged laying hens are still unkown. This study present the effects of dietary icariin supplementation on the laying performance, the egg quality and the bone metabolism in caged laying hens. A total of 216 Lohmann pink-shell laying hens of 54-week-old from a commercial farm in the Hubei province of China were randomly assigned to 3 treatment groups with 6 replications per group and 12 birds per replication. The control group was fed a corn-soybean meal basal diet, and the experimental groups were fed basal diets supplemented with 500 and 2000 mg/kg icariin for 90 d. Layer performance responses, egg quality parameters, the bone mineral density and serum biochemical indicators were measured at the end of the experiment. Results showed that feed/egg ratio decreased as the supplied icariin level increased. The laying rate and the average egg weight were increased compared to the control group. However, no significant effect was observed on the egg quality. The bone mineral density of the tibia was measured by the dual-energy X-ray absorptiometry, indicating that icariin can increase the bone mineral density. Serum biochemical analysis showed that icariin decreased the level of alkaline phosphatase, tartrate-resistant acid phosphatase, osteocalcin and calcitonin. Our observations provided evidences that dietary supplementation of icariin increased the bone mineral density and improved the laying performance, and icariin can be used for the prevention of the osteoporosis in caged laying hens.

Role of APOE Gene in Bone Mineral Density and Incidence of Bone Fractures in Brazilian Postmenopausal Women

2018 ◽  
Vol 21 (2) ◽  
pp. 227-235 ◽  
Author(s):  
Leticia S. Souza ◽  
Neuza Felix Rochette ◽  
Diego França Pedrosa ◽  
Rafaella P. Lopes Magnago ◽  
Teodiano B. Freire Filho ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Postmenopausal Women ◽  
Bone Mineral ◽  
Bone Fractures ◽  
Apoe Gene ◽  
Mineral Density

scholarly journals Computed tomographic analysis of tibiotarsal bone mineral density and content in turkeys as influenced by age and sex

2012 ◽  
Vol 57 (No. 12) ◽  
pp. 573-580 ◽  
Author(s):  
A. Charuta ◽  
R.G. Cooper ◽  
M. Pierzchała ◽  
J.O. Horbańczuk
Keyword(s):  
Computed Tomography ◽  
Bone Mineral Density ◽  
Bone Mineral ◽  
Mineral Content ◽  
Bone Fractures ◽  
Volumetric Bone Mineral Density ◽  
Mineral Density ◽  
Computed Tomographic ◽  
Males And Females ◽  
Tomographic Analysis

Changes in the volumetric bone mineral density (vBMD) and bone mineral content (BMC) of tibiotarsal bones of growing turkeys as affected by birds&rsquo; age, sex, and within-the-bone location, respectively, were determined by computed tomography. The research was performed on 165 heavy-type BIG 6 turkeys reared between weeks (wk) 3&ndash;16 of age. The computed tomography (pQCT) measurement, conducted at 18&nbsp;and 50% of the bone length, comprised a bone fragment which was 0.07 mm thick for the compact and the spongious substance collectively. It should be noted that the diaphyses of the tibiotarsal bones in turkeys (580 mg/cm<sup>3</sup>) had greater vBMD than the proximal metaphyses (300 mg/cm<sup>3</sup>), (P &le; 0.001). BMC was higher in metaphyses for both sexes. Significant differences between the BMC of the metaphyses and the diaphyses were observed in males and females at wk 3 (P &le; 0.01), 6 (P &le; 0.05), and 9 (P &le; 0.001), and at wk 3 (P &le; 0.05) and 12 (P &le; 0.01), respectively. vBMD in the diaphyses gradually attenuated with age for both sexes, from 688 mg/cm<sup>3</sup> (wk 3) to 532 mg/cm<sup>3</sup> (wk 16). vBMD of the metaphyses was constant in females, but in males it achieved maximum values of 350 mg/cm<sup>3 </sup>at wk 6 and 12 and minimum of 260 mg/cm<sup>3 </sup>at wk 9 and 16. Correlations between body weight (BW) and vBMD of the diaphyses were observed in males (r = &ndash;0.85, P &le; 0.001) and females (r = &ndash;0.52, P &le; 0.01). It can be concluded that vBMD loss in diaphyses diminished bone-breaking strength leading in investigated turkeys to deformities and bone fractures.

scholarly journals Cut off values of bone mineral density defining postmenopausal women with bone fractures.

1995 ◽  
Vol 54 (10) ◽  
pp. 807-810 ◽  
Author(s):  
G G Riario-Sforza ◽  
C Incorvaia ◽  
A Scazzoso ◽  
T Travisi ◽  
F Nitti ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Postmenopausal Women ◽  
Bone Mineral ◽  
Bone Fractures ◽  
Mineral Density

Enhancement of Prediction for Hip Fractures Using Stochastic Assessment of Bone Mineral Density Distribution From DXA Images

2013 ◽  
Author(s):  
Xuanliang Neil Dong ◽  
Patricia Cussen ◽  
Timothy Lowe ◽  
David Di Paolo ◽  
Joyce Ballard
Keyword(s):  
Bone Mineral Density ◽  
Bone Mineral ◽  
Hip Fractures ◽  
Bone Fractures ◽  
Osteoporotic Fractures ◽  
Mineral Density ◽  
X Ray ◽  
Increasing Risk ◽  
Fracture Risks ◽  
Bone Mineral Density Distribution

Hip fractures are among the most common types of osteoporotic fractures that affect one in three women and one in six men over the age of 50 [1]. It is well known that loss of bone mass, quantified by bone mineral density using Dual-energy X-ray Absorptiometry (DXA), is associated with the increasing risk of bone fractures. However, bone mineral density (BMD) alone cannot fully explain changes in fracture risks [2, 3]. In particular, BMD is not able to predict fracture risks for women with osteopenia, in which a BMD T-score is between −1.0 and −2.5. This suggests additional factors (i.e., bone quality) should be considered in predicting fracture risks [4].

scholarly journals Measurement of Bone Mineral Density in Children with Cerebral Palsy from an Ethical Issue to a Diagnostic Necessity

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Jasmin S. Nurković ◽  
Pavle Petković ◽  
Danijela Tiosavljević ◽  
Radiša Vojinović
Keyword(s):  
Bone Mineral Density ◽  
Cerebral Palsy ◽  
Bone Mineral ◽  
Bone Fractures ◽  
Pediatric Population ◽  
Statistical Significance ◽  
Analysis Data ◽  
Diagnostic Process ◽  
Walking Ability ◽  
Mineral Density

Introduction. Due to concerns about cumulative radiation exposure in the pediatric population, it is not standard practice to perform dual-energy X-ray absorptiometry (DXA) analysis in the diagnostic process of musculoskeletal disorders, such as cerebral palsy (CP). This study aimed to evaluate the bone mineral density (BMD) in children with CP and the ethical justification of applying DXA analysis in these children. Material and Methods. In this monocentric retrospective analysis, data were collected from children and adolescents with CP who were treated for a primary illness for three years. A clinical examination, which included a DXA analysis, recommended by the multidisciplinary team, was performed. After applying inclusion and exclusion criteria, 60 scans remained for statistical analysis. BMD and Z-scores for the lumbar spine (LS), and hip right and left femoral neck (RFN and LFN, respectively), and total hip (TH) were recorded. Results. The average age of children with CP when DXA analysis was first performed was about 7 years. The BMD (mean±SD) at LS (LS-BMD) of all patients was 0.612±0.12, at RFN 0.555±0.11, at LFN 0.572±0.1, and at TH (TH-BMD) 0.581±0.13. The values of the Z-score (mean±SD) at LS of all patients were −2.5±0.22, at RFN −2.2±0.21, at LFN -2.25 (SD=0.2), and at TH -2.3 (SD=0.23). There was no statistical significance between age and gender; however, BMI, walking ability, fracture history, and pattern of CP had a significant impact on BMD and Z-score values of these children. Conclusion. The results of our study clearly indicate that children with CP have a higher risk of low BMD, osteoporosis, and bone fractures, which makes it ethically justifiable to perform the DXA analysis in these children.

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