Effect of Early Selection for Body Weight, Keel Length and Breast Circumference on Egg Production Traits in Inshas Strain of Chickens

El-Ghar, R. S. A.; El-Karim, Ragaa Abd

doi:10.21608/epsj.2016.5419

Cited by 8 publications

(16 citation statements)

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“…These approaches may lead to some undesirable consequences such as disease outbreaks, increased stress, fat accumulation, leg problems, and metabolic disorder. From a nutritional point of view, dietary modulation represents a remarkable way of modifying animals' performance and well-being ( Abou El-Ghar and Abd El-Karim, 2016 ; Akbari et al., 2016 , 2018 ; Fathi et al., 2016 ; El-Senousey et al., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Dietary probiotics as a strategy for improving growth performance, intestinal efficacy, immunity, and antioxidant capacity of white Pekin ducks fed with different levels of CP

et al. 2021

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The potential impacts of probiotics on the performance and health status of white Pekin ducks fed with optimal or suboptimal dietary CP were evaluated during the growing period. A total of 180 male white Pekin ducks (14-day-old ducks with an initial weight of 415.65 ± 2.20 g) were randomly divided into 4 experimental groups (45 in each group of 5 replicates) in a 2 × 2 factorial design. The main factors included 2 dietary CP levels (18 or 14%) and dietary probiotic addition (with or without probiotics). The probiotic source was supplemented at 0.2 g per kilogram of diet from a blend of Lactobacillus acidophilus and Lactobacillus casei . The results showed that the diet containing 18% CP and probiotics significantly increases the final and total weight gain. Activities of intestinal enzymes (amylase, lipase, and protease), morphometrics (villus length, goblet cell count, and cryptal depth), and carcass percentage were also increased significantly. Total protein content, lysozyme activity, bactericidal activity, nitro blue tetrazolium levels, alternative complement pathway, superoxide dismutase activity, and catalase activity were significantly increased, whereas glucose, cortisol, and total cholesterol levels were decreased when treated with diet containing 18% CP and probiotics. Conversely, the group treated with diet containing 14% CP without probiotics showed the poorest performance, carcass properties, immune response, and antioxidant potential. In conclusion, probiotic addition to the 14% CP diet improved the performance of white Pekin ducks caused by reduced CP diet to performance due to the 18% CP diet without probiotic supplementation.

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Section: Introductionmentioning

confidence: 99%

Dietary probiotics as a strategy for improving growth performance, intestinal efficacy, immunity, and antioxidant capacity of white Pekin ducks fed with different levels of CP

et al. 2021

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“…Abdellatif and EL-Hammady (1992) indicated the genetics of sexual dimorphism in Dandarawi chickens, where males body weight were heavier than females within the same age and at different ages.The direct response or the genetic gain in a selected trait could be determined by the difference between the mean of selected group and population means (Falconer, 1981). The direct response due to selection for high body weight over generations was reported by Abdellatif (1999) and Abou El-Ghar and Abd El-Karim (2016). The main objectives of the present study were to determine the direct effect due to selection for high body weight at eight weeks of age on body weight and body conformation measurementsover two generations at different ages in Dandarawi chicken.…”

Section: Introductionmentioning

confidence: 59%

“…Body weight is usually consideringa fair indicator for subsequent growth rate (Chambers, 1990). As reported before in different selection programs, there were significant differences between lines selected for high and low body weight at 8 weeks of age (Maloney et al 1967;Marks, 1983;Liu et al 1995;Abdellatif, 1999;EL-Dlebshany, 2004;Abd El-Karim and Ashour, 2014;Ashour et al 2015and Abou El-Ghar andAbd El-Karim, 2016). As for the effect of sex on body weight (Maloney et al 1967;Jaap, 1971;Soltan andEL-Nadi, 1986 andAbdellatif, 1989) reported that the males body weight at 8 weeks of age was superior that of females with significant differences.The individual selection is effective for certain traits that exhibited high heritability estimates such as body weight (Rishell, 1997).Many of body conformation measurements such as shank and keel lengths may be used as good indicators for skeletal size, where Chambers(1990) stated that there were genetic relationship between growth and skeletal dimensions.Normally the sexual dimorphism occurs in the majority of the domesticated avian species, especially in the chickens where the males were found to be heavier than females by about 10-20% as Merritt (1966) and Buvanendran (1969).…”

Section: Introductionmentioning

confidence: 61%

Direct Response Due to Selection for Body Weight at Eight Weeks of Age in Dandarawi Chicken: Body Weight and Conformation.

Abuzaid

Abdellatif

Abdelfattah

2019

EPSJ

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This study was carried out at the Poultry Farm of Poultry Production Department, Faculty of Agriculture, Assiut University, through two successive generations to study the effect of selection for high body weight at eight weeks of age on body weight and body conformation measurements (shank length and keel length) in Dandarawi chicken. The study involved 2932 pedigreed chicks obtained by mating 96 sires with 935 dams through two successive generations. The chicks in each generation divided into two lines, line (S) selected for high body weight and line (C) is the control line. Chickens were weighed from 0 to 20 weeks of age, shank length from 4 to 20 weeks of age and keel length from 8 to 20 weeks of age was measured for the two lines over generations.The results showed that body weightsat zero,4, 8 and 20 weeks of agewere significantly different (P≤0.01) between the two generationsthat improved by the individual selection. Also, there were highly significant differences between linesin body weight from zero to 20 weeks of age (P≤0.01) and the selected line had higher body weight than the control line over generations.There were highly significant differences between sexesin body weight from 4 to 20 weeks of age (P≤0.01) which male body weights from 4 to 20 weeks of age were higher than that of females in the two lines over generations. Sexual dimorphism was gradually increased from 4 to 20 weeks of age.There were highly significant differences (P≤0.01) between generations, lines and sex in shank lengthand keel length at all agesin the present study. It found some significant interactions between the main effects considering the different studied traits which mean that the effect did not due to the main effects, but it may refer to other factors than the main effects. Also, there were insignificant interactions between the main effects which mean that the variations between the studied traits were due to the main effects. It concluded that by using selection at 8 weeks of ageled to improve body weight and body conformation in Dandarawi chicken.

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“…One hundred and twenty birds of the local Egyptian strain Inshas, aged 24 weeks old, were used in this study. The average age of sexual maturity for Inshas hens is 22–25 weeks of age [ 18 ]. At the start of the experiment, all birds were weighed individually to the nearest gram and then distributed into four groups and randomly replicated.…”

Section: Methodsmentioning

confidence: 99%

Dietary Pomegranate By-Product Alleviated the Oxidative Stress Induced by Dexamethasone in Laying Hens in the Pre-Peak Period

Eid

Kirrella

Tolba

et al. 2021

Animals

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This experiment was conducted to assess the inclusion of the by-products of pomegranate peels to ameliorate the harmful impacts of oxidative stress in the pre-peak period of laying hens. For this, 120 local Egyptian strain hens (Inshas hens) aged 24 weeks old were used in four treatments. Pomegranate peel powder was included at 2% and 4% in the diets of laying hens subjected to oxidative injuries induced by dexamethasone compared with negative and positive control groups for 12 weeks. The addition of pomegranate peel powder (PPP) reduced the adverse effects of oxidative stress induced by dexamethasone on body weight (p = 0.006) and egg production (p = 0.010) comparing to the positive control. Additionally, pomegranate peel powder had a significant positive lowering effect on plasma cholesterol (p < 0.001) and triglyceride contents (p = 0.005) compared to control groups. The lipid peroxidation indicators (MDA) were reduced, but the antioxidative enzymes (SOD, CAT, and GPx) and total antioxidant blood capacity were improved with PPP. Based on the obtained data, the present research recommends using dietary PPP up to 4% to mitigate adverse oxidative stress effects in the pre-peak laying period and as a sustainable and economical approach for agricultural development.

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Effect of Early Selection for Body Weight, Keel Length and Breast Circumference on Egg Production Traits in Inshas Strain of Chickens

Cited by 8 publications

References 8 publications

Dietary probiotics as a strategy for improving growth performance, intestinal efficacy, immunity, and antioxidant capacity of white Pekin ducks fed with different levels of CP

Dietary probiotics as a strategy for improving growth performance, intestinal efficacy, immunity, and antioxidant capacity of white Pekin ducks fed with different levels of CP

Direct Response Due to Selection for Body Weight at Eight Weeks of Age in Dandarawi Chicken: Body Weight and Conformation.

Dietary Pomegranate By-Product Alleviated the Oxidative Stress Induced by Dexamethasone in Laying Hens in the Pre-Peak Period

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