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Silva LALD, Euzébio Dornelas TC, De Marchi FE, Dos Santos TC. Dietary ratio of linoleic to alpha-linolenic acid affects the reproductive performance of Japanese quail. Br Poult Sci 2024; 65:484-493. [PMID: 38994721 DOI: 10.1080/00071668.2024.2332719] [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: 11/29/2023] [Accepted: 02/27/2024] [Indexed: 07/13/2024]
Abstract
1. This study was conducted to assess the effects of different dietary omega 6:3 ratios fed to male and female Japanese quail breeders on incubation performance, chick quality and progeny performance.2. A completely randomised design was used, with five diets containing different ratios of vegetable oils rich in linoleic acid (LA from soybean oil) or α-linolenic acid (ALA from linseed oil) with LA/ALA ratios of 13.75:1, 10.69:1, 7.63:1, 4.57:1 and 1.48:1 with 12 cage replicates containing six birds each.3. There was a quadratic effect of the LA/ALA ratio on total hatchability (p < 0.011), fertile hatchability (p = 0.046) and total mortality (p = 0.046). There was no effect on fertility (p > 0.05). The LA/ALA ratios of 1.48 and 13.75 fed to both hens and cockerels or hens resulted in greater fertility, as measured by the number of days after copulation during which fertile eggs were laid and the number of points of hydrolysis on the perivitelline membrane. A decreasing linear effect (p < 0.0001) was observed on chick length and an increasing linear effect on body weight at 1 day of age. There were no effects on progeny performance.4. The LA/ALA ratio affected yolk mineral matter (p = 0.009), crude protein (p = 0.091), chick mineral matter (p < 0.038) and ether extract (p < 0.0001) contents. Maternal diet affected the fatty acid profile of egg yolk and chick liver, indicating that dietary contents were transferred to eggs and chicks.5. Fertile egg production increased with lower LA/ALA ratios. Therefore, linseed oil can be used together with soybean oil to formulate diets for female Japanese quail obtain LA/ALA ratios between 4:1 and 10:1.
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Affiliation(s)
- L A L da Silva
- Department of Animal Science, State University of Maringá, Maringa, Brazil
| | | | - F E De Marchi
- Department of Animal Science, State University of Maringá, Maringa, Brazil
| | - T C Dos Santos
- Department of Animal Science, State University of Maringá, Maringa, Brazil
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Benova A, Ferencakova M, Bardova K, Funda J, Prochazka J, Spoutil F, Cajka T, Dzubanova M, Balcaen T, Kerckhofs G, Willekens W, van Lenthe GH, Charyyeva A, Alquicer G, Pecinova A, Mracek T, Horakova O, Coupeau R, Hansen MS, Rossmeisl M, Kopecky J, Tencerova M. Omega-3 PUFAs prevent bone impairment and bone marrow adiposity in mouse model of obesity. Commun Biol 2023; 6:1043. [PMID: 37833362 PMCID: PMC10575870 DOI: 10.1038/s42003-023-05407-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
Obesity adversely affects bone and fat metabolism in mice and humans. Omega-3 polyunsaturated fatty acids (omega-3 PUFAs) have been shown to improve glucose metabolism and bone homeostasis in obesity. However, the impact of omega-3 PUFAs on bone marrow adipose tissue (BMAT) and bone marrow stromal cell (BMSC) metabolism has not been intensively studied yet. In the present study we demonstrated that omega-3 PUFA supplementation in high fat diet (HFD + F) improved bone parameters, mechanical properties along with decreased BMAT in obese mice when compared to the HFD group. Primary BMSCs isolated from HFD + F mice showed decreased adipocyte and higher osteoblast differentiation with lower senescent phenotype along with decreased osteoclast formation suggesting improved bone marrow microenvironment promoting bone formation in mice. Thus, our study highlights the beneficial effects of omega-3 PUFA-enriched diet on bone and cellular metabolism and its potential use in the treatment of metabolic bone diseases.
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Affiliation(s)
- Andrea Benova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
- Faculty of Science, Charles University, Prague, Czech Republic
| | - Michaela Ferencakova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Kristina Bardova
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jiri Funda
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jan Prochazka
- Czech Centre for Phenogenomics & Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Frantisek Spoutil
- Czech Centre for Phenogenomics & Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Tomas Cajka
- Laboratory of Translational Metabolism, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Martina Dzubanova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
- Faculty of Science, Charles University, Prague, Czech Republic
| | - Tim Balcaen
- Biomechanics lab, Institute of Mechanics, Materials, and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium
- Pole of Morphology, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium
- Department of Chemistry, Molecular Design and Synthesis, KU Leuven, Leuven, Belgium
| | - Greet Kerckhofs
- Biomechanics lab, Institute of Mechanics, Materials, and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium
- Pole of Morphology, Institute for Experimental and Clinical Research, UCLouvain, Brussels, Belgium
- Department of Materials Engineering, KU Leuven, Leuven, Belgium
- Prometheus, Division of Skeletal Tissue Engineering, Katholieke Universiteit Leuven, Leuven, Belgium
| | | | | | - Arzuv Charyyeva
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Glenda Alquicer
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Alena Pecinova
- Laboratory of Bioenergetics, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Tomas Mracek
- Laboratory of Bioenergetics, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Olga Horakova
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Roman Coupeau
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Morten Svarer Hansen
- Molecular Endocrinology Laboratory (KMEB), Department of Endocrinology, Odense University Hospital, Odense, C DK-5000, Denmark
| | - Martin Rossmeisl
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jan Kopecky
- Laboratory of Adipose Tissue Biology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Michaela Tencerova
- Laboratory of Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic.
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Gao J, Xie C, Yang J, Tian C, Zhang M, Lu Z, Meng X, Cai J, Guo X, Gao T. The Effects of n-3 PUFA Supplementation on Bone Metabolism Markers and Body Bone Mineral Density in Adults: A Systematic Review and Meta-Analysis of RCTs. Nutrients 2023; 15:2806. [PMID: 37375709 DOI: 10.3390/nu15122806] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/07/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
Supplemental n-3 polyunsaturated fatty acids (PUFA) on bone metabolism have yielded inconsistent results. This study aimed to examine the effects of n-3 PUFA supplementation on bone metabolism markers and bone mineral density through a meta-analysis of randomized controlled trials. A systematic literature search was conducted using the PubMed, Web of Science, and EBSCO databases, updated to 1 March 2023. The intervention effects were measured as standard mean differences (SMD) and mean differences (MD). Additionally, n-3 PUFA with the untreated control, placebo control, or lower-dose n-3 PUFA supplements were compared, respectively. Further, 19 randomized controlled trials (RCTs) (22 comparisons, n = 2546) showed that n-3 PUFA supplementation significantly increased blood n-3 PUFA (SMD: 2.612; 95% CI: 1.649 to 3.575). However, no significant effects were found on BMD, CTx-1, NTx-1, BAP, serum calcium, 25(OH)D, PTH, CRP, and IL-6. Subgroup analyses showed significant increases in femoral neck BMD in females (0.01, 95% CI: 0.01 to 0.02), people aged <60 years (0.01, 95% CI: 0.01 to 0.01), and those people in Eastern countries (0.02, 95% CI: 0.02 to 0.03), and for 25(OH)D in people aged ≥60 years (0.43, 95% CI: 0.11 to 0.74), treated with n-3 PUFA only (0.36, 95% CI: 0.06 to 0.66), and in studies lasting ≤6 months (0.29, 95% CI: 0.11 to 0.47). NTx-1 decreased in both genders (-9.66, 95% CI: -15.60 to -3.71), and serum calcium reduction was found in studies lasting >6 months (-0.19, 95% CI: -0.37 to -0.01). The present study demonstrated that n-3 PUFA supplementation might not have a significant effect on bone mineral density or bone metabolism markers, but have some potential benefits for younger postmenopausal subjects in the short term. Therefore, additional high-quality, long-term randomized controlled trials (RCTs) are warranted to fully elucidate the potential benefits of n-3 PUFA supplementation, as well as the combined supplementation of n-3 PUFA, on bone health.
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Affiliation(s)
- Jie Gao
- School of Public Health, Qingdao University, Qingdao 266071, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266021, China
| | - Chenqi Xie
- School of Public Health, Qingdao University, Qingdao 266071, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266021, China
| | - Jie Yang
- Health Service Center of Xuejiadao Community, Qingdao 266520, China
| | - Chunyan Tian
- School of Public Health, Qingdao University, Qingdao 266071, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266021, China
| | - Mai Zhang
- School of Public Health, Qingdao University, Qingdao 266071, China
| | - Zhenquan Lu
- School of Public Health, Qingdao University, Qingdao 266071, China
| | - Xiangyuan Meng
- School of Public Health, Qingdao University, Qingdao 266071, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266021, China
- Department of Toxicology, School of Public Health, Jilin University, Changchun 130021, China
| | - Jing Cai
- School of Public Health, Qingdao University, Qingdao 266071, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266021, China
| | - Xiaofei Guo
- School of Public Health, Qingdao University, Qingdao 266071, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266021, China
| | - Tianlin Gao
- School of Public Health, Qingdao University, Qingdao 266071, China
- Institute of Nutrition & Health, Qingdao University, Qingdao 266021, China
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Kalia S, Magnuson AD, Sun T, Liu G, Kim WK, Johnson Z, Lei XG. Supranutrition of microalgal docosahexaenoic acid and calcidiol improved growth performance, tissue lipid profiles, and tibia characteristics of broiler chickens. J Anim Sci Biotechnol 2023; 14:27. [PMID: 36922887 PMCID: PMC10018906 DOI: 10.1186/s40104-023-00842-3] [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: 09/22/2022] [Accepted: 01/13/2023] [Indexed: 03/17/2023] Open
Abstract
BACKGROUND Docosahexaenoic acid (DHA) and calcidiol could be enriched in chicken for improving public nutrition and health. It remains unclear if supranutritional levels of DHA and calcidiol impair growth performance or metabolism of broiler chickens. This study was to determine singular and combined effects of high levels of supplemental DHA-rich microalgal biomass or oil and calcidiol on growth performance, concentrations of triglycerides, cholesterol, and nonesterfied fatty acids in plasma, liver, breast, and thigh, and biophysical properties of tibia. METHODS In Exp. 1, 144 day-old Cornish chicks were divided into 4 groups (6 cages/treatment, 6 birds/cage), and were fed a corn-soybean meal basal diet (BD), BD + 10,000 IU calcidiol/kg (BD + Cal), BD + 1% DHA-rich Aurantiochytrium (1.2 g DHA/kg; BD + DHA), and BD + Cal + DHA for 6 weeks. In Exp. 2, 180 day-old chicks were divided into 5 groups, and were fed: BD, BD + DHA (0.33% to 0.66% oil, 1.5 to 3.0 g DHA/kg), BD + DHA + EPA (1.9% to 3.8% eicosapentaenoic acid-rich Nannochloropsis sp. CO18, 0.3 to 0.6 g EPA/kg), BD + DHA + calcidiol (6000 to 12,000 IU/kg diet), and BD + DHA + EPA + Cal for 6 weeks. RESULTS Birds fed BD + Cal diet in Exp. 1 and BD + DHA + EPA diet in Exp. 2 had higher (P < 0.05) body weight gain (10%-11%) and gain:feed ratio (7%), and lower (P < 0.05) total cholesterol and triglyceride concentrations in plasma (18%-54%), liver (8%-26%), breast (19%-26%), and thigh (10%-19%), respectively, over the controls. The two diets also improved (P < 0.05) tibial breaking strength (8%-24%), total bone volume (2%-13%), and (or) bone mineral density (3%-19%) of chickens. CONCLUSION Supranutrition of dietary calcidiol and DHA alone or together did not produce adverse effects, but led to moderate improvements of growth performance, lipid profiles of plasma and muscle, and bone properties of broiler chickens.
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Affiliation(s)
- Sahil Kalia
- Department of Animal Science, Cornell University, 252 Morrison Hall, Ithaca, NY, 14850, USA
| | - Andrew D Magnuson
- Department of Animal Science, Cornell University, 252 Morrison Hall, Ithaca, NY, 14850, USA
| | - Tao Sun
- Department of Animal Science, Cornell University, 252 Morrison Hall, Ithaca, NY, 14850, USA
| | - Guanchen Liu
- Department of Poultry Science, University of Georgia, Athens, GA, USA
| | - Woo Kyun Kim
- Department of Poultry Science, University of Georgia, Athens, GA, USA
| | - Zackary Johnson
- Nicholas School of the Environment, Duke University, Beaufort, NC, USA
| | - Xin Gen Lei
- Department of Animal Science, Cornell University, 252 Morrison Hall, Ithaca, NY, 14850, USA.
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Puzio I, Graboś D, Bieńko M, Radzki RP, Nowakiewicz A, Kosior-Korzecka U. Camelina Oil Supplementation Improves Bone Parameters in Ovariectomized Rats. ANIMALS : AN OPEN ACCESS JOURNAL FROM MDPI 2021; 11:ani11051343. [PMID: 34065038 PMCID: PMC8150831 DOI: 10.3390/ani11051343] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/28/2021] [Accepted: 05/03/2021] [Indexed: 02/07/2023]
Abstract
The aim of the present study was to determine the effect of administration of Camelina sativa oil (CO) as a source of polyunsaturated fatty acids (PUFA) on bone parameters in ovariectomized rats (OVX). Overall, 40 10-week-old healthy female Wistar rats were divided into 4 groups with 10 animals in each. Rats in the control group (SHO) were subjected to a sham operation, whereas experimental rats (OVX) were ovariectomized. After a 7-day recovery period, the SHO the rats received orally 1 mL of physiological saline for the next 6 weeks. The OVX rats received orally 1 mL of physiological saline (OVX-PhS), 5 g/kg BW (OVX-CO5), or 9 g/kg BW (OVX-CO9) of camelina oil. The use of camelina oil had a significant effect on body weight, lean mass, and fat mass. The camelina oil administration suppressed the decrease in the values of some densitometric, tomographic, and mechanical parameters of femur caused by estrogen deficiency. The CO treatment increased significantly the serum level of osteocalcin and decreased the serum level of C-terminal telopeptide of type I collagen in the OVX rats. In conclusion, camelina oil exerts a positive osteotropic effect by inhibiting ovariectomy-induced adverse changes in bones. Camelina oil supplementation can be used as an efficient method for improving bone health in a disturbed state. However, further research must be carried out on other animal species supplemented with the oil.
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Affiliation(s)
- Iwona Puzio
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (D.G.); (M.B.); (R.P.R.)
- Correspondence:
| | - Dorota Graboś
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (D.G.); (M.B.); (R.P.R.)
| | - Marek Bieńko
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (D.G.); (M.B.); (R.P.R.)
| | - Radosław P. Radzki
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (D.G.); (M.B.); (R.P.R.)
| | - Aneta Nowakiewicz
- Department of Preclinical Veterinary Sciences, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (A.N.); (U.K.-K.)
| | - Urszula Kosior-Korzecka
- Department of Preclinical Veterinary Sciences, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland; (A.N.); (U.K.-K.)
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Akbari Moghaddam Kakhki R, Shouldice VL, Price KR, Moats J, Kiarie EG. n-3 fatty acids fed to ISA brown and Shaver white breeders and their female progeny during rearing: Impact on egg production, eggshell, and select bone attributes from 18 to 42 weeks of age. Poult Sci 2020; 99:3959-3970. [PMID: 32731983 PMCID: PMC7597914 DOI: 10.1016/j.psj.2020.03.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/06/2020] [Accepted: 03/24/2020] [Indexed: 12/28/2022] Open
Abstract
The impact of feeding sources of n-3 fatty acids (FA) to ISA brown and Shaver white breeders and their female offspring during rearing on egg production, eggshell, tibia, and keel bone attributes was examined. Breeders were fed Control (CON) or CON + 1% dried microalgae (DMA: Aurantiochytrium limacinum) as the source of docosahexaenoic acid or CON + 2.6% of a coextruded mixture of full-fat flaxseed (FFF) and pulses as a source of α-linolenic acid. Day-old offspring were fed 1) breeder CON-pullet CON (CON-CON), 2) breeder CON-pullet DMA (CON-DMA), 3) breeder CON-pullet FFF (CON-FFF), 4) breeder DMA-pullet CON (DMA-CON), 5) breeder DMA-pullet DMA (DMA-DMA), 6) breeder FFF-pullet CON (FFF-CON), and 7) breeder FFF-pullet FFF (FFF-FFF). At 18 wk of age (WOA), pullets were fed a common layer diet to 42 WOA for egg production and bone quality assessments. There was no (P > 0.05) interaction between strains and diets and the main effect of diets on egg production, egg mass, and eggshell quality. There was an interaction (P = 0.008) between strain and diet on egg weight (EW); however, the strain effect on EW (P < 0.001) was such that ISA brown had heavier eggs than Shaver white. Shaver white had higher (P < 0.001) eggshell %, eggshell, and tibia breaking strength (BS), as well as tibia ash concentration compared with ISA brown hens. In contrast, ISA brown hens exhibited heavier (P < 0.05) tibia and keel bones. Feeding breeders DMA and pullets both sources of n-3 FA increased tibia medullary ash concentration compared with other diets (P < 0.001). Shaver white hens showed greater decline in tibia BS (83.7 vs. 96.3%) and ash content (84.1 vs. 94.3%) than ISA brown hens from 18 to 42 WOA (P < 0.05). Strain and diets exhibited independent effects on eggshell, tibia, and keel attributes. Provision of α-linolenic acid and docosahexaenoic acid to breeders and offspring improved tibia medullary ash concentration at 42 WOA.
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Affiliation(s)
| | - V L Shouldice
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada
| | - K R Price
- Technical Services, Alltech Canada, ON, Canada
| | - J Moats
- Research and Development, O & T Farms, SK, Canada
| | - E G Kiarie
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada.
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Akbari Moghaddam Kakhki R, Price KR, Moats J, Bédécarrats G, Karrow NA, Kiarie EG. Impact of feeding microalgae (Aurantiochytrium limacinum) and co-extruded mixture of full-fat flaxseed as sources of n-3 fatty acids to ISA brown and Shaver white breeders and progeny on pullet skeletal attributes at hatch through to 18 weeks of age. Poult Sci 2020; 99:2087-2099. [PMID: 32241494 PMCID: PMC7587698 DOI: 10.1016/j.psj.2019.12.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/17/2019] [Accepted: 12/01/2019] [Indexed: 12/26/2022] Open
Abstract
Impact of feeding n-3 fatty acids (FA) to ISA brown and Shaver white breeders and their progeny on bone development in pullets was investigated. Breeders were fed Control (CON); CON + 1% microalgae (DMA: Aurantiochytrium limacinum) as the source of docosahexaenoic acid; and CON + 2.6% of a co-extruded mixture of full-fat flaxseed (FFF) and pulses mixture as source of α-linolenic acid. Test diets (DMA and FFF) were balanced for total n-3 FA and n-6: n-3 FA ratio. Samples of day-old progeny were euthanized for bone mineral content (BMC) and tibia collagen type II. The remaining pullets were fed posthatch treatments as follows: from breeder CON: CON (CON-CON), DMA (CON-DMA), and FFF (CON-FFF), from breeder DMA: CON (DMA-CON) and DMA (DMA-DMA) and from breeder FFF: CON (FFF-CON) and FFF (FFF-FFF). A total of 60 pullets per posthatch diets were reared in cages (12 pullets/cage, n = 5) with free access to feed and water, bled at 6, 12, and 18 wk of age (WOA) for bone turnover markers and necropsied at 18 WOA for tibia and femur samples. Day-old pullets from breeder fed CON had greater BMC (P < 0.001) relative to those from breeders fed other diets. There was strain and diet interaction (P ≤ 0.024) on tibia breaking strength (TBS) and tibia cortical ash concentration at 18 WOA such that diet responses were only observed in Shaver white pullets. In this context, TBS of DMA-DMA and FFF-FFF was greater than for pullets originating from CON breeder, and the cortical ash weight of DMA-DMA and FFF-FFF pullets was 23.8 and 20.2%, respectively, higher than for CON-CON pullets. In conclusions, the strain effects were strong on tibia attributes on 18-week-old pullets. Breeder feeding of n-3 FA was more effective when concomitant with posthatch feeding of n-3 FA in supporting the skeletal strength and cortical bone development in Shaver white pullets. Further investigations are warranted to establish the impact these strategies on skeletal health during laying cycle.
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Affiliation(s)
| | | | | | - G Bédécarrats
- Department of Animal Biosciences, University of Guelph, Guelph, ON
| | - N A Karrow
- Department of Animal Biosciences, University of Guelph, Guelph, ON
| | - E G Kiarie
- Department of Animal Biosciences, University of Guelph, Guelph, ON.
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