Effects of nanocalcium carbonate on egg production performance and plasma calcium of laying hens

Abstract

SummaryThis experiment was conducted to evaluate the effects of nanocalcium carbonate (NCC) instead of calcium carbonate (CC) on egg production, egg weight, egg mass, FCR, blood calcium and egg quality characteristics in laying hens. A total of 120 laying hens were used in a 10-weeks trial, from week 23 to 33 of age. Laying hens were randomly assigned to six treatments with four replications, five hens each. The experimental treatments involved replacing 50% of the CC in the diet by decreasing amounts of NCC and were T1 Basal diet (BD) with 8.06% CC; T2 (6.045% of CC as a negative control); T3 (4.03% of CC replaced by 2.015% NCC); T4 (4.03% of CC replaced by 1.01% NCC); T5 (4.03% of CC replaced by 0.252% NCC) and T6 (4.03 of CC replaced with 0.126%NCC).Egg weight was unaffected by dietary treatments (p > .05).However, the egg production percentage and egg mass in T6 were less than that of other treatments (p < .05). The laying hens in the control group had the best average feed conversion ratio (p < .05). Also, the lowest concentration of calcium in hens' blood was recorded for birds fed T6 (p < .05). The best egg shell quality (relative egg shell weight and egg shell weight/surface) was observed in T1 (p < .05).Collectively, our results demonstrated that NCC could replace CC at a lower inclusion level but extreme reduction of calcium concentration in diets (to 1.43% Ca in the T6 group) reduced production performance, egg quality characteristics, Tibia thickness and blood calcium of laying hens. K E Y W O R D Slaying hen, nanocalcium carbonate (NCC), performance, plasma calcium

A novel source of calcium: effects of calcium pidolate concentration on egg quality in aged laying quails (Coturnix coturnix Japonica)

“…In the current research, it was determined that the addition of calcium pidolate to the diet had no effect on FCR, feed intake and body weight change, which was in accordance with other reports with aged layers (An et al ., 2016; Ganjigohari et al ., 2018; Kakhki et al ., 2019; Islam and Nishibori, 2021; Wang et al ., 2021). Similar results had been reported by Arczewska-Włosek et al .…”

Effect of Nano Dicalcium Phosphate Supplemetation on Eggshell Structure and Calcium and Phosphorus Utilization

“…On the other hand, Ganjigohari et al (2018) found that treatments (replacing 50% of the calcium carbonate; CaCo 3) in the diet by Nano calcium carbonate had no effect on tibia ash. However, there are no documents in the literature regarding the effect of CaCo 3 nanoparticles on tibia thickness of laying hens.…”

“…Results detected that Ca and P concentrations were significantly increased with the increasing level of NDCP supplementation, They were 11.46 and 11.93 for Ca, the corresponding values were 6.36 and 7.33 for P at 200 and 400 g/ton, respectively compared to the control group; being 10.6 Ca and 5.31 P. The increasing of serum Ca and P stuck with the increase in NDCP supplementation level up to 400g/ton and tend to decrease after that (9.79 and 6 for 800 g/ ton). Ganjigohari et al (2018) noted that concentration of calcium in plasma is in two forms; connected to other compounds or ionic and they noted that there was no evidence regarding the effect of CaCo 3 nano particles on blood calcium content of laying hens. The amount of serum protein is an important factor affecting the first form of plasma calcium concentration (Lesson and Summers, 1969).…”

The effect of metal-containing nanoparticles on the health, performance and production of livestock animals and poultry

“…Addition of Ca carbonate nanoparticles to drinking water (1 g/L) of layers produced more eggshell strength and freshness indices (Wang et al 2017 ). Neverthless, the egg production rate and blood Ca level were decreased by replacing 4.03% of Ca carbonate by 2.02%, 1.01%, 0.25% Ca carbonate nanoparticles that may be attributed to too much reduction in the Ca level in the layer hen's diet (Ganjigohari et al 2018 ).…”