Research Article
Performance Evaluation of Lohman Brown Commercial Layer Chicken Breeds Under On-Station Management at Pawe, Benishangul Gumuz, Ethiopia
Habtie Arega Kidie*,
Mezgebu Getnet Alebel,
Misbah Alawi Abdo
Issue:
Volume 7, Issue 2, June 2024
Pages:
12-21
Received:
23 February 2024
Accepted:
12 March 2024
Published:
11 April 2024
Abstract: This study was undertaken to evaluate the performance of Lohman Brown under on-station conditions at Pawe Agricultural Research Center. To evaluate the breed production performance and to generate information for private commercial farms and multiplication centers. A total of 100 (sixty-day-old) chicks and commercial layer feed were purchased from Alema poultry farm in Bishoftu. Vaccinations were administered to the chicks while bio-security measures were employed throughout the experimental period (83 weeks). Daily feed intake, body weight, feed conversion rate, egg production, egg weight, egg mass, and mortality, were recorded. Data were analyzed using descriptive statistics free R-4.0.4 software. Average feed intake during the growing period (10-20 weeks) 59.29g/head and in the layer period (21-72weeks) 117.26g/head/day. The average feed conversion rate at12, 16 and 20weeks of age was 8.85, 8.23 and 7.35 respectively. Average body weight at age at first egg lay and peak egg production were 1368.6 and 1553.9g/head respectively. Average daily weight gain at 10-12, 12-16, and 16- 20 weeks of age was 5.43, 7.22 and 11.09g/bird respectively. Age at first and 5% egg-laying were recorded at the beginning of 21weeks (141days). Age at 50% and peak egg production were recorded at 22 weeks (151 days) and 36weeks. The average HHEP (90.71) and HDEP (92.03) were recorded at peak production, while the overall percentage of lay from 21-72(52) weeks of age were HHEP (74.77%) and HDEP (78.28%). The total amount of egg production from 21-72(52) weeks of age in terms of HHEP and HDEP was 272.2 and 284.93egg/hen/year. Average egg weight at age at first egg lay, 50% egg lay and peak egg production were 47.43, 51.5 and 57.03g. Overall mean egg weight from 21-72(52) weeks of age was 57.81g. The average daily egg mass at the age of first egg lay, 50% egg lay and peak egg production were 7.59, 25.68, and 52.48g. On the other hand, the overall mean daily egg mass from 21-72(52) weeks of age was 45.38g. The average feed conversion rate and feed conversion efficiency for egg mass from 21-72 weeks were 2.64 and 0.387. There was no mortality record up to 28 weeks but, the overall mortality rate was 10% up to 83 weeks. The higher egg production and lower mortality record showed that the breed is adapted in the study area. Lohman Brown is recommended for users with basic input packages and on-farm evaluation of chickens should be done.
Abstract: This study was undertaken to evaluate the performance of Lohman Brown under on-station conditions at Pawe Agricultural Research Center. To evaluate the breed production performance and to generate information for private commercial farms and multiplication centers. A total of 100 (sixty-day-old) chicks and commercial layer feed were purchased from ...
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Review Article
Effects of Nicotine on Chicken Embryo Development: A Review
Issue:
Volume 7, Issue 2, June 2024
Pages:
22-32
Received:
2 April 2024
Accepted:
27 April 2024
Published:
17 May 2024
Abstract: Background: Studies have shown that 22.3% of the world’s population use tobacco and nicotine exposure during pregnancy remains a concern in embryonic development. Cigarette smoke contains several toxic and carcinogenic chemicals and has been known to cause pregnancy complications including premature births, low birthweights, and stillbirths. Purpose: This review aims to study nicotine exposure in chicken embryo development comprehensively. Methods: PubMed, Centers for Disease Control and Prevention (CDC), and Antpedia sites were used to search for studies using chicken embryos as a model. Studies that reported findings on nicotine's effects on various developmental processes were considered for this review. Conclusion: In total, 55 published articles were included in this review to discuss findings of nicotine-induced alterations during chicken embryo development. Findings have shown that nicotine affects angiogenesis, and embryonic and chorioallantoic membrane (CAM) growth by inhibiting cell proliferation. Nicotine affects brain and cerebellar cortex development by suppressing tumor protein p53 reactions. Nicotine also causes abnormal axial rotation and incomplete formation and closure of neural tubes. The compounds like green tree extract, vitamin C, and folic acid can reduce the effects of nicotine to suppress femur growth, decrease the contractility of cardiomyocytes, and reduce survival rates. These compounds are not protective measures to completely overcome the teratogenic effects of nicotine.
Abstract: Background: Studies have shown that 22.3% of the world’s population use tobacco and nicotine exposure during pregnancy remains a concern in embryonic development. Cigarette smoke contains several toxic and carcinogenic chemicals and has been known to cause pregnancy complications including premature births, low birthweights, and stillbirths. Purpos...
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,
Muhammadzohir Hidoyatov
