The effects of in-ovo injection of glucose on hatchability, hatching weight and subsequent performance of newly-hatched chicks

Abstract

This experiment was conducted to determine the effects of an in-ovo injection of glucose on hatchability, weight and subsequent performances of newly-hatched chickens. The 720 fertile eggs used in this experiment were obtained from a Cobb-500 broiler breeder flock of 28 weeks of age. Treatments were the following: 1) control group (withou- injection), 2) group injected with 0.5 ml deionized water (sham group), 3) group injected with 0.5 ml glucose 15% in deionized water, 4) group injected with 0.5 ml glucose 20% in deionized water and 5) group injected with 0.5 ml glucose 25% in deionized water. There werh four replicates per treatment and 36 eggs per replicate. The experimental design was a completely randomized design. Upon hatch, hatchability and weight of newly-hatched chicks were measured, and 20 chicks per replicate were transferred to an experimental house and reared for 42 days. Live weight and feed intakeswere measured for each experimental unit at 21 and 42 days of age and then weight gai, and feed conversion ratio were calculated. The results of the study indicate that group that received glucose at 15%, 20% and 25% had significantly higher hatching weight as compared with the control and the sham groups,tbut,eggs injected in ovo had significantly lower hatchability than the controls (p < 0.01). Also, there were no significant treatment effects on feed intake between 0 and 21 days post-hatch. Chicks that received in-ovo injection of glucose haddbetter feed intake, weight gain and feed conversion ratio compared with chicks hatched from the control and the sham groups. The obtained Data suggest that in-ovo injection may increase weight and improve the performancs of newly-hatched chickens

Influence of different prebiotics and mode of their administration on broiler chicken performance

“…In our study, hatchability was not influenced by in ovo treatment until reaching the critical dose, which caused a drop in hatchability, either numerically (3.5 mg of DN and 7.0 mg/embryo BI) or statistically (7.0 mg/embryo of DN; P < 0.05). However, many papers report decrease in overall hatchability as a result of in ovo injection of different solutions, for instance glucose (Salmanzadeh, 2012), royal jelly extracts (Moghaddam et al, 2014) or avian influenza vaccines Table 3 Effects of prebiotics delivered in ovo, in-water and in ovo combined with in-water on performance traits of broiler chickens = in-water.…”

In ovo feeding of carbohydrates for broilers—a systematic review

“…Glucose alone reduced the hatchability in 70% of 10 studies when compared to the non‐injected group. On the other hand, glucose increased the weight at hatch in 64% of 11 studies (Pedroso et al., ; Salmanzadeh, ; Salmanzadeh, Ebrahimnejad, Shahryar, Ashrafi, et al., ; Salmanzadeh, Ebrahimnejad, Shahryar, Gorbani, et al., ; Salmanzadeh et al., ). Maltose reduced the hatchability in two studies (Zhai, Gerard, et al.…”

“…Regarding the post‐hatch performance, the use of carbohydrates improved weight gain in only one study (Salmanzadeh et al., ), and the final weight in three studies (Salmanzadeh, ; Salmanzadeh, Ebrahimnejad, Shahryar, Ashrafi, et al., ; Tako et al., ), when compared to the placebo group. Feed intake increased in only one (6%) study (Salmanzadeh, ) and feed conversion in three (17%) studies (Campos et al., ; Salmanzadeh, ; Salmanzadeh et al., ).…”

“…In 57%, there was an increase in hatch weight of the birds. From 10 studies that evaluated the post‐hatch performance, carbohydrates improved the weight gain in two studies (Campos et al., ; Salmanzadeh et al., ), the final weight in two studies (Salmanzadeh, ; Salmanzadeh, Ebrahimnejad, Shahryar, Ashrafi, et al., ), the feed intake in one study (Salmanzadeh, ) and the feed conversion in three studies (Campos et al., ; Salmanzadeh, ; Salmanzadeh et al., ).…”

“…Although several studies have shown the benefits of carbohydrate inoculation in eggs (Salmanzadeh, ; Tako, Ferket, & Uni, ), the results are still inconsistent and depend on the type of carbohydrates inoculated (Kadam et al., ), site of injection in the egg, embryo developmental stage and genetics (Leitão et al., ; Santos et al., ). Thus, this study was conducted in an attempt to clarify the effects of carbohydrate administration in embryonated eggs of broilers, addressing the different variations of the in ovo feeding technique.…”