Effect of Dietary Probiotic Supplementation During Rearing Period on Subsequent Laying Performance of Local Laying Hens

Abstract

This study aimed to investigate the effect of dietary probiotic supplementation during rearing period on subsequent laying performance and physiological response of Sinai hens during laying period. A total number of 360 Sinai chicks, one old day were used in the current trail. Chicks were divided into 4 equal groups each of 3 replicates. Experimental groups were as follows, 1 st group served as a control and fed the basal experimental diets, while, the 2 nd , 3 rd and 4 th groups were fed the basal diets supplemented with 0.3, 0.4 and 0.5 g probiotic / kg, respectively from hatch up to 20 wks of age. The commercial probiotic used was Saltose Ex which is a thermo stable probiotic where it contains lactic acid bacteria (Lactobacillus lactis) 2.5x 10 8 CFU, Bacillus subtilis 1.8x 10 9 CFU/g product. Results indicated that feed consumption and feed conversion ratio were significantly (P≤0.05) between the experimental treatments during rearing period (1-20 weeks of age). The relative weights of carcass, liver, giblets and length of jejunum and illeum at end of experimental period were significantly affected due to dietary treatment. The feeding on diet supplemented with 0.3 g probiotic /kg diet during rearing period resulted in a lower intestinal microbial count of both TCC and CC than control diet. Laying rate%, egg weight and egg mass were significantly increased due to dietary treatment as compared to the control. All dietary probiotic levels significantly reduced feed consumption within the whole laying period except the birds fed 0.4 g probiotic /kg diet as a subsequent effect during the laying period. Fertility % was significantly increased in eggs produced from birds fed diet supplemented with 0.4 and 0.5 g probiotic/kg diet, while, hatchability % was improved by feeding on diet with 0.3g probiotic/kg diet during rearing period as compared to the control diet. Therefore, these results indicate that dietary probiotic supplementation from 0.3 to 0.5 g/kg diet during rearing period could be used to improve welfare status to Sinai chicks and subsequent productive traits during laying period.

Effects of Supplementation with different levels of a multi strain probiotic on the performance of laying chicken

“…Layer diets have considerable high ash content due to the high requirement for calcium which is provided through inclusion of limestone in the rations. The calcium and phosphorus content were within the range of 3.0 -4.20% and 0.40-0.64% respectively, reported by (Rizk et al, 2019;Yan et al, 2019). Ca and P are the key macro minerals that play a critical role in bone development, mineralization and eggshell formation with the former 94% and latter 1% in eggshell (Aditya et al, 2021).…”

Effect of Using Biogen as a Feed Additive on Productive and Reproductive Performance of Rabbits

“…The reverse picture denoted by Belhassen et al (2016) who stated that viability rate of kits at birth in the first parity during the first 21 days was significantly (P<0.05) better in supplemented group, while such difference was not observed during the second parity. On the other hand, on chicks Rizk et al (2019) noticed that total embryonic mortality (%) did not significantly changed between probiotic dietary treatments groups and the control one. On line with the obtained MR% the findings of Bovera et al (2010) who reported that mannan oligosaccharides (MOS) at the rate of 1.0 g/kg in the diets of rabbits could reduce rabbit mortality, since they recorded the highest (P<0.05) total mortality rate for rabbits fed antibiotics than for those fed 0.5, 1.0 and 1.5 g MOS/Kg diet (34.2% Vs. 17.7, 7.75 and 17.1%).…”

“…Moreover, Mostafa et al (2014) using probiotics (AVI-BAC and BGY) postpartum on cows and Nde et al (2014) with Celmanax® (yeast culture product) addition to diets of sheep. Rizk et al (2019) observed that feed consumption significantly increased for chicks fed diet supplemented with 0.3 and 0.5 g probiotic/kg than the control group at the whole period (1-20 wks. of age).…”

“…The reduction in number trend of services per conception obtained herein came on line with findings of Attia et al (2015) when they used bee pollen and/or propolis, inulin and/or mannan-oligosaccharides in rabbit does diets, since they reported fewer services per conception and greater fertility rate. Similarly, Rizk et al (2019) recorded fertility increasing of hens' egg with using probiotics (contains lactic acid bacteria (Lactobacillus lactis) 2.5x 10 8 CFU, Bacillus subtilis 1.8x 10 9 CFU and calcium carbonate up to 1 gram as carrier) in their diets. Belhassen et al (2016) found that fertility rate of rabbit does was higher (P<0.05) in rabbits fed with yeast supplemented diet than the control during the second parity.…”

Effect of Adding Different Sources of Probiotics to Diets Containing Oxidized Palm Oil on Some Productive and Reproductive Traits in Gimmizah Laying Hens

“…Also, one reason for the observed improvement in egg hatchability of probiotic fed group could be due to improved haugh unit (Tona et al 2002). Rizk et al (2019) showed that addition of 0.3 and 0.5 g commercial probiotics (contains LAB (Lactobacillus lactis) 2.5 × 10 8 CFU, Bacillus subtilis 1.8 × 10 9 CFU/ g product) were significantly increased fertility and hatchability during rearing period as compared to the control diet. Darsi and Zhaghari (2021) showed that dietary supplementation of Lactobacillus sporogenes as probiotic in White Leghorn layer breeders diet significantly increased egg hatchability P ≤ 0.05).…”