Effect of limestone particle size on bone quality characteristics of hens at end-of-lay

Witt, F.H de; Kuleile, Nchele; Merwe, H.J. van der; Fair,

doi:10.4314/sajas.v39i1.61172

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…This leads to increased bone breaking strength with coarse limestone particles in accordance with our results ( Figure 2 ). De Witt et al (2009) did not observe a coarse limestone effect on tibia breaking strength before 66 wk. Xavier et al.…”

Section: Discussionmentioning

confidence: 55%

Effect of limestone particle size on performance, eggshell quality, bone strength, and in vitro/in vivo solubility in laying hens: a meta-analysis approach

et al. 2022

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Numerous publications over the past 5 decades have investigated the effect of limestone particle size ( LmPS ) on production performance, bone mineralization, and limestone solubilization in laying hens. Coarse limestone particles have been shown to improve eggshell quality and bone mineralization. However, there is a large variability of responses in birds to this factor, indicating the need to better quantify the effect of modulating factors related to coarse particles that could explain this variability. The objective of this meta-analysis was to study the impact of LmPS on the digestive and metabolic fate of Ca to optimize its utilization by laying hens. Fifty-eight papers published between 1971 and 2019, including 71 experiments were included in this study. Four categories of dependent variables were identified: Ca solubility, production performance, eggshell quality, and bone strength. Independent variables tested were LmPS and age. Results showed that the in vitro solubilization of limestone linearly decreased ( P < 0.001; R² = 0.91) while in vivo solubilization linearly increased with LmPS ( P < 0.001; R² = 0.91). Coarse limestone particles were retained longer in the gizzard ( P < 0.001; R² = 0.60), inducing higher solubilization by gastric juices than fine limestone. LmPS showed no effect on production performance while all eggshell quality parameters increased with LmPS ( P < 0.001; R² > 0.91): increasing specific gravity by 0.8%, eggshell thickness by 1.1%, and eggshell breaking strength by 3% when increasing from 0.15 mm to 1.5 mm. LmPS had an effect on tibia breaking strength dependently of age (Age × LmPS, P < 0.001; R² = 0.89): coarse limestone particles increased tibia breaking strength with aging compared to fine limestone particles. The current study renders it possible to quantify the effects of age and LmPS on eggshell quality and tibia breaking strength. This work showed an interaction between eggshell quality and bone strength and showed that LmPS increases bone strength in older laying hens.

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Section: Discussionmentioning

confidence: 55%

Effect of limestone particle size on performance, eggshell quality, bone strength, and in vitro/in vivo solubility in laying hens: a meta-analysis approach

et al. 2022

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Effect of H3PO4 Concentration and Particle Size of the Eggshell Used in Laying Hens Fed on Bone and Blood

et al. 2013

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The objective of this research was to evaluate the effect of H 3 PO 4 concentrations and particle size of eggshell used in the feed of laying hens on bone and blood profiles. Ninety-six laying hens (Isa Brown strain) age 25 weeks were reared in individual battery cage and divided into 8 groups randomly. Group 1 was fed using eggshell without H 3 PO 4 and particle size of <1 mm (feed 1 ), group 2 was fed using eggshell that has been soaked in H 3 PO 4 3% and particle size of <1 mm (feed 2), group 3 were fed using eggshell that has been soaked in H 3 PO 4 4% and particle size of <1 mm (feed 3), group 4 was fed using eggshell that has been soaked in H 3 PO 4 5% and particle size of <1 mm (feed 4), group 5 was fed using eggshell that without H 3 PO 4 and particle size of <3 mm (feed 5 ), group of 6 was fed using eggshell that has been soaked in H 3 PO 4 3% and particle size of <3 mm (feed 6), group 7 was fed using eggshell that has been soaked in H 3 PO 4 4 % and particle size of <3 mm (feed 7) and a group of 8 was fed using eggshell that has been soaked in H 3 PO 4 5% and particle size of <3 mm (feed 8). A Completely Randomized Design patterns factorial 4 x 2 x 3 was used in this research. Result of this research showed that had no interaction effect (P>0.05) between the H 3 PO 4 concentration and particle size of eggshell on weight, volume, diameter of tibia bone and calcium and phosphorus content of the blood. The concentration of H 3 PO 4 or particles size also had no effect (P>0.05) on all variables.

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Effects of different limestone particle sizes in the diet of broiler breeders post molting on their performance, egg quality, incubation results, and pre-starter performance of their progeny

et al. 2016

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An experiment was conducted to test the hypothesis that a coarse limestone diet improves productivity, reproductive performance and the calcium utilization of molted broiler breeders. In total, 640 broiler breeder females, 73-week-old and sixty-four 27-week-old cockerels, Cobb 500, were evaluated during 10 weeks, according to a randomized block design composed of 4 treatments with 8 replicates each. Treatments consisted of diets with the inclusion of 100% fine limestone-fine PS (0.2 mm GMD-geometric mean diameter); PS1: 30% fine limestone+70% limestone with 1.0 mm GMD; PS2: 30% fine limestone+70% limestone with 2.0 mm GMD; and PS3: 30% fine limestone+70% limestone with 3.0 mm GMD. Calcium retention in the gizzard of the breeders, bone characteristics, and breeder performance, egg characteristics, eggshell quality, incubation performance, chick quality and yield, chick pre-starter live performance, and chick bone characteristics were determined. There was no significant difference (P>0.05) in the rate of lay, percentage of non-settable eggs, egg weight, egg shape index, egg specific gravity, eggshell weight, thickness, and percentage hatchability and egg weight loss of broiler breeders fed with diets with different limestone particle sizes. The chick quality and yield, chick pre-starter live performance, and chick bone characteristics were not affected (P>0.05) by any of the limestone particle sizes. It was concluded that live and reproductive performance parameters of broiler breeders post molting is not affected by limestone particle size in the feed.

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Effect of limestone particle size on bone quality characteristics of hens at end-of-lay

Cited by 3 publications

References 15 publications

Effect of limestone particle size on performance, eggshell quality, bone strength, and in vitro/in vivo solubility in laying hens: a meta-analysis approach

Effect of limestone particle size on performance, eggshell quality, bone strength, and in vitro/in vivo solubility in laying hens: a meta-analysis approach

Effect of H3PO4 Concentration and Particle Size of the Eggshell Used in Laying Hens Fed on Bone and Blood

Effects of different limestone particle sizes in the diet of broiler breeders post molting on their performance, egg quality, incubation results, and pre-starter performance of their progeny

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