Research article


Ban Mohan Mohsen and Fayhaa Abbood Mahdi Al-Nadawi

Online First: March 30, 2023

This study was conducted in the Science Department / College of Basic Education / Al-Mustansiriya University for the period from 1-15-2022 to 2-15-2022. The research aims to study the effect of injecting non-laying chickens at the age of 8 months and chickens with low ovulation before the end of production with FSH at a concentration I.U/l 75. The effect of hormonal injections on productive performance and some qualitative characteristics of eggs such as egg weight, diameter and height of yolk, histological study of ovary and ovary weight were studied. In this study, (24) non-laying, low-ovulating chickens and laying hens were used, distributed into four groups with six replications, and a group of laying hens of brown Lohmann breed, aged 8-12 months, weighed individually, and distributed into the following groups: The first control group (laying hens) were not treated: they were not injected with a hormone and were fed only laying hens diets. The second group, the control, was hormonally treated (laying eggs): they were injected with half a dose of the hormone once during the duration of the experiment. They were fed only the diets of laying hens. The third group (non-laying hens at the age of 8 months): They were injected with half a dose of the hormone for one time and were fed with diets for laying hens. The fourth group (hens with few eggs before the end of their production): they were injected with half a dose of the hormone for once, which stimulates the ovaries for a month, and they were fed with diets for laying hens. The results showed significant differences in the characteristics of egg production when calculating the general rate, as the production percentage for the second, third and fourth groups reached (80.0%, 83.3% and 73.6%), respectively. While the first and fourth treatments gave the lowest percentage of egg production in this comparison. The second and third treatments also gave the highest average egg weight when calculating the general rate compared to the rest of the treatments, as the average was (65 ± 0.44 and 85.3 ± 1.20). Significant differences appeared in the rates of egg weight in the four groups. It was also noted that there were significant differences in the rate of feed consumption as. It is noticed a decrease in the amount of feed consumed by the first treatment compared to the rest of the groups, as it reached (100.5 ± 1.20 grams / day / chicken), and the highest rate of feed consumption was in the second and third treatments, when it reached (220.2 and 250.3) grams / day / chicken. Significant differences were seen in the diameter and height of the yolk of the five groups. The largest diameter was in the hormonal treatment, reaching (0.20 ± 5.5 cm), and the highest height of the yolk in the first, second, and hormonal treatment, reaching (17 ± 0.33, 17 ± 0.25, 17 ± 0.50), respectively. And density in the texture of albumen, which indicates the giving of fodder and protein in appropriate quantities, which resulted in quality in the eggs produced in terms of weight and texture. The autopsy results also showed the weight of the ovary, the number of eggs, mature follicles, and yolks above the ovary increased in the first, second, and hormonal treatment) and the largest weight of the ovary was in the treatment It reached (11.8 gm). It is clear from the current research that the type of feed, additives, nutritional supplements, and care for the hygiene and health of chickens have a great impact on obtaining high-quality productive characteristics in the produced eggs. Differences appeared in all treatments in relation to chicken weights, as the live body weight increased and the amount of change in body weight when calculating the general rate, and the highest percentage of weight was in the hormone group, which reached (2600 ± 50 grams).


human ovarian, FSH, ovarian fertility