Long term effects of boron on layer bone strength and production parameters

Wilson, James H.; Ruszler, P. L.

doi:10.1080/00071669889312

Cited by 62 publications

(36 citation statements)

References 12 publications

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“…Eren et al (2004) found that similar findings like as Wilson & Ruszler (1998) about B addition to laying hen diets at level of 400 ppm resulted negative values of live weight, feed consumption and egg productivity parameters. Wilson & Ruszler (1998) also noticed that 200 ppm B addition resulted better performance and bone strength findings compare with other treatment groups in laying hens in their trial.…”

Section: Effects Of Boric Acid and Humate Supplementation On Performasupporting

confidence: 59%

Effects of boric acid and humate supplementation on performance and egg quality parameters of laying hens

Hakan

Gultekin

Ozge

2012

Rev. Bras. Cienc. Avic.

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In this study, the effects of boric acid and humate supplementation into hen diets on egg production and quality parameters and blood cholesterol levels were examined. For this aim, totally 160, 40 weeks of age, Hyline-White 98 layers were randomly divided into control and 3 treatment groups each containing 40 birds and 10 replicates (each with 4 birds). There was no boric acid or humate supplementation to control group diets (basal diet) where as treatment groups were supplemented with (basal diet plus) 90 ppm boric acid or 1 g/kg humate, or combination of these two feed additives, respectively. The experimental period lasted in 14 weeks. End of the trial there were no significant effects of dietary boric acid and humate inclusion on feed intake, egg weights and yields, egg quality parameters (shell thickness, breaking strength, and shape index) compared with control. But feed conversion ratio for hens which were supplemented with humate showed negative results while combination humate and boric acid were showed positive result compare with control (p < 0.05). It was also determined that there were no effects of treatments on blood cholesterol levels. As a result, since hens which were fed with basal diet plus boric acid and humate combination showed better feed conversion ratio, these feed additives combination can added diets without any adverse effect for laying hens.

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Section: Effects Of Boric Acid and Humate Supplementation On Performasupporting

confidence: 59%

Effects of boric acid and humate supplementation on performance and egg quality parameters of laying hens

Hakan

Gultekin

Ozge

2012

Rev. Bras. Cienc. Avic.

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“…After the measurements were obtained, the left tibias were wrapped in saline-soaked towels, sealed in plastic bags and frozen (2408C) until the day of determination of breaking strength and ashing. Bone breaking strength (kg) was determined using the Instron Universal Testing Machine (Model Ioll, Instron, Canton, MA, USA) according to Wilson and Ruszler (1998). Following bone breaking, the bone wall thickness was measured at the midpoint mark using the micrometer.…”

Section: Humoral Immunitymentioning

confidence: 99%

The impact of incorporation of n-3 fatty acids into eggs on ovarian follicular development, immune response, antioxidative status and tibial bone characteristics in aged laying hens

Ebeid

2011

Animal

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The objectives of this study were to investigate the effects of different dietary sources of unsaturated fatty acids (fish oil (FO) and/or linseed oil (LO)) on laying performance, egg yolk fatty acid composition, ovarian follicular development, antioxidative properties, immune response and tibial bone characteristics in aged laying hens. A total of 100 Hisex Brown hens at 56 weeks of age were housed individually in laying cages in an open-sided building under a 16 h light:8 h dark lighting schedule. Hens were randomly divided into four experimental treatments (n 5 25 each). Birds were fed ad libitum diets containing 2.5% vegetable oil (C, control), 2.5% FO, 2.5% LO and a mixture of 1.25% LO 11.25% FO (LO 1 FO) from 56 to 68 weeks of age. Egg production, egg quality characteristics and yolk lipid profile were analyzed. At 68 weeks of age, ovarian follicles were classified and tibial bone characteristics were determined. Serum thiobarbituric acid reactive substance (TBARS), glutathione peroxidase (GSH-Px) activity and total antioxidant capacity were measured. Incorporation of n-3 polyunsaturated fatty acids (n-3PUFA) into the egg yolks has been successful by using dietary FO and/or LO. There were no significant effects of treatments on hen-day egg production, feed intake, egg weight, egg shape index, albumen height, Haugh units and yolk height. However, dietary FO and/or LO supplementation had a significantly positive effect on eggshell percentage, eggshell thickness and yolk color. At 68 weeks of age, there was no significant difference among dietary treatments for tibial bone measurements. Also, no negative effects were detected in ovarian follicular development and weights of the ovary and oviduct, expressed in both absolute terms and relative to body weight. Dietary 2.5% LO, 2.5% FO and a mixture of 1.25% FO 1 1.25% LO enhanced GSH-Px activity, total antioxidant capacity and antibody titers significantly in comparison with control. It could be concluded that inclusion of mixed sources of n-3PUFA in diets at moderate levels (2.5%) increased the n-3PUFA content and decreased the n-6/n-3 ratio content in the yolk, improved the antioxidative status, reduced lipid peroxidation, enhanced the antibody response and did not have any negative influence on ovarian follicular development and tibial bone characteristics in aged laying hens.

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“…Prior to breaking, each bone was marked at midpoint, and outside diameters (in mm) were measured perpendicularly and parallelly to the direction of the applied force using a calliper. The breaking strength of the tibia bone was determined using the Instron Universal Testing Machine (Model Ioll, Instron, Canton, USA) according to Wilson and Ruszler (1998). Following the bone breaking, the bone wall thickness was measured at the midpoint mark using a micrometer.…”

Section: Bone Measurementsmentioning

confidence: 99%

The effect of omega-3 enriched meat production on lipid peroxidation, antioxidative status, immune response and tibia bone characteristics in Japanese quail

Ebeid¹,

Fayoud²,

El-Soud³

et al. 2011

Czech J. Anim. Sci.

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The objective of the present study was to research the effects of different supplemented dietary sources of n-3 polyunsaturated fatty acids (n-3 PUFA) to produce n-3 enriched meat on growth performance, meat quality, serum antioxidative status, immune response and tibia bone characteristics in Japanese quail. Three hundred 1-day-old Japanese quail chicks were randomly weighed and divided into five dietary treatments containing 0% oil (C, negative control), 2% vegetable oil (VO, positive control), 2% linseed oil (LO), 2% fish oil (FO) and a mixture of 1% linseed oil +1% fish oil (LO+FO). Body weight and feed consumption were recorded. Fatty acid profile, cholesterol content, chemical composition and physical characteristics of breast meat were determined. Serum thiobarbituric acid-reactive substances (TBARS), glutathione peroxidase (GSH-Px) activity and total antioxidant capacity were measured. No negative effects were detected in live weight, feed consumption and physical characteristics of meat. The incorporation of n-3 PUFA in the meat proved to be successful when different sources of n-3 PUFA were used. The supplementation of n-3 PUFA caused a significant decrease in TBARS values and a significant increase in both the GSH-Px activity and total antioxidant capacity. Interestingly, the inclusion of n-3 PUFA in quail diets enhanced the antibody titre and bone morphological characteristics. Therefore, it can be concluded that the inclusion of n-3 PUFA in diets at moderate levels increased the n-3PUFA content in meat, improved the antioxidative status, reduced lipid peroxidation, enhanced the antibody response and bone morphological characteristics and did not have any negative influence on physical characteristics of meat and growth performance in Japanese quail.

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Long term effects of boron on layer bone strength and production parameters

Cited by 62 publications

References 12 publications

Effects of boric acid and humate supplementation on performance and egg quality parameters of laying hens

Effects of boric acid and humate supplementation on performance and egg quality parameters of laying hens

The impact of incorporation of n-3 fatty acids into eggs on ovarian follicular development, immune response, antioxidative status and tibial bone characteristics in aged laying hens

The effect of omega-3 enriched meat production on lipid peroxidation, antioxidative status, immune response and tibia bone characteristics in Japanese quail

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