Effect of organic and inorganic manganese supplementation on performance and eggshell quality in aged laying hens

Abstract

Background: Manganese (Mn) is an important trace element for laying hen's nutrition, which is required in small amounts in the diet. Its deficiency results in lowered production performance and eggshell quality.Objectives: This experiment was conducted to investigate the influence of different sources and levels of Mn on egg production performance and eggshell quality in aged laying hens.Methods: A total of 720, 83-week-old Hy-Line W-36 laying hens were fed a non-Mn supplemented basal diet for 4-week (to ime Mn-exhaustion of body) and then were allocated to a completely randomized design with 10 treatments, six replicates and 12 birds each. Concentration of Mn in the non-Mn supplemented basal diet was 10.34 mg/kg (treatment 1), the added doses of dietary Mn were included 30, 60, and 90 mg/kg of three different sources (Mn-oxide, Mn-sulphate, and Mn-organic) for treatments 2-10, respectively. The experiment lasted for 12 week.Results: Dietary supplementation with either organic or inorganic Mn sources significantly enhanced egg production (EP), egg mass (EM), feed conversion ratio (FCR), and relative eggshell weight (RESW) compared with the non-Mn supplemented diet.However, the experimental diets did not influence feed intake (FI), egg weight, and other eggshell quality traits. Based on the broken line regression models, the performance traits were optimized at 30-40 mg/kg Mn concentration when supplemented by Mn-sulphate or Mn-organic. Although, it was 80-90 mg/kg when supplemented by Mn-oxide. The relative bio-efficacy of inorganic Mn sources include Mn-oxide and Mnsulphate in compare with Mn-organic were estimated 45% and 87% (for EP trait), 30% and 94% (for EM trait), 36% and 99% (for FCR trait), and 37% and 78% (for RESW trait), respectively. Conclusions:In the aged laying hens, Mn requirement is higher than the NRC's recommendation. Sulphate and organic sources of Mn are more effective than Mn-oxide.

Evaluation of Egg Quality and Performance in Late-Lay Hens Fed Different Combinations of Copper, Manganese, and Zinc Complexed with Sulfate or Amino Acid Ion

“…Perhaps the effect of mineral source on egg quality is dose-dependent or requires a longer experimental period to obtain diet-related differences in shell quality. Indeed, this study included similar levels of Zn and Mn and higher levels of Cu than previous studies, and some researchers have found that an inclusion rate of 30-40 ppm AAC Mn or AAC Zn, which is lower than that used in this study, improved performance in 85-to 95-week-old laying hens [25].…”

“…When AAC Cu was supplemented alone or in combination with AAC Zn, it increased Cu excretion at weeks 10 and 15. AAC Cu may be more bioavailable than CuSO 4 , thereby reducing the dietary requirement for late-phase laying hens [25]. Egg shell Cu content did not differ by treatment, and Cu was below detectable limits for the majority of egg contents analyzed at weeks 10 and 15.…”

Impact of Dietary Different Trace Mineral on Performance, Egg Quality, Oxidation Status, and Immune Responses of Female Broiler Breeders

“…It has been well-documented that trace minerals, such as Zn, Cu, and Mn, play a crucial role in eggshell mineralization and the formation of calcium crystals during shell development (Darvishi, et al, 2020;Stefanello, et al, 2014). Zarghi et al (2023) found that dietary supplementation with either organic or inorganic Mn sources signi cantly enhanced the egg mass and relative eggshell weight. Moreover, several reports show that organic sources have greater bioavailability in comparison to inorganic sources of trace elements (Yenice, et al, 2015;Suo, et al, 2015).…”

Identification and Effects of the Different Carotenoid on External and Egg Yolk Quality of Alabio Laying Ducks (Anas plathyrhyncos Borneo)

“…The quantity and quality of the feed given determines the production and quality of eggs both physically/externally and chemically/internally. The egg production would have achieved at peak production depend on the feed, management, and economical value (Zarghi et al, 2023). Egg pro Age at first laying indicates that the duck is sexually mature, although ovulation may have occurred (Liu et al, 2023).…”