Estimation Of Genetic Parameters For Body Weight, Chest Girth, Shank Length In Crossbred Chicken (F1) At 3 And 4 Weeks Of Age

Sadikin, Euvillia Hannah and Prof. Dr. Ir. V. M. Ani Nurgiartiningsih,, M.Sc., (2023) Estimation Of Genetic Parameters For Body Weight, Chest Girth, Shank Length In Crossbred Chicken (F1) At 3 And 4 Weeks Of Age. Sarjana thesis, Universitas Brawijaya.

Abstract

Crossbred chicken (F1) is a crossing between local Bangkok chicken cocks and Lohmann Brown chicken hens. Crossbred chickens have the advantage of a fast growth rate and low mortality rate. Crossbred chickens can produce large quantities with a high body weight and egg productivity. Local Bangkok chicken is known to have a slow growth but has a good quality of meat and supported by the market demand. While the Lohmann hens, laying strain chicken, has a high egg production ability. The crossbreeding will produce offspring with a good performance of local Bangkok chicken and high egg production of Lohmann hen. Improvement of performance could be done by selection on breeding value of quantitative trait and should be based on the trait with moderate to high heritability value. Heritability value of certain trait is used to determine which viii traits should be used as selection criteria. Estimated breeding value is used to select the best Bangkok cocks as a superior breed. The research was conducted at UD. Berline Farm, Maguan Village, Ngajum District, Malang Regency, East Java, started from August 7th 2022 to December 23rd 2022. The material used were 50 crossbred chickens unsexed from a cross of 8 black-feather local Bangkok cocks with Lohmann Brown hens using Artificial Insemination (AI) techniques. The variable measured were body weight (BW), chest girth (CG), and shank length (SL). The method to calculate heritability (ℎ2) and breeding value was the Paternal Half Sib correlation. The variance components were analyzed using ANOVA (Analysis of Variance) single factor. The result showed that the mean of body weight was 122.84 ± 22.21 g at 3 weeks of age and 173.30 ± 30.87 g at 4 weeks of age. The mean of chest girth was 9.40 ± 1.04 cm at 3 weeks of age and 10.97 ± 1.33 cm at 4 weeks of age. The mean of shank length was 3.25 ± 0.31 cm at 3 weeks of age and 4.16 ± 0.46 cm at 4 weeks of age The heritability for body weight, chest girth and shank length at 3 weeks of age are 0.67, 0.49 and 0.29, and at 4 weeks of age are 0.83, 0.62, and 0.57, respectively. The positive breeding values for body weight at 3 weeks of age were belong to 3 cocks (JBM10, JBM 6, JBM13) and at 4 weeks of age were belong to 4 cocks (JBM10, JBM 6, JBM13, JBM2). This research concluded the heritability values for body weight, chest girth, and shank length at 3 and 4 weeks of age are categorized as moderate to high. The highest heritability value is body weight at 4 weeks of age (0.83 ± 0.038). The highest breeding value for body weight at 3 and 4 weeks of age is obtained by JBM 10. Body weight at 4 weeks of age could be used as selection criteria. Local Bangkok Cocks with positive breeding value for body weight should be selected as superior cocks and could be used in the crossbreeding program.

English Abstract

The research was held at UD. Berline Farm, Maguan Village, Ngajum District, Malang Regency, East Java, started from August 7th 2022 to December 23rd 2022. This research aims to determine the heritability and breeding value for body weight (BW), chest girth (CG), and shank length (SL) at 3 and 4 weeks of age in crossbred chickens (F1. The materials used were 50 crossbred chickens unsexed from a cross of 8 black-feathered local Bangkok cocks with different number of Lohmann Brown hens with Artificial Insemination (AI) techniques. The variables measured were BW, CG and SL. The heritability (ℎ2) and breeding value was estimated using the Paternal Half-Sib correlation method. The variance components were analyzed using ANOVA (Analysis of Variance) single factor. The result showed the mean of BW at 3 and 4 weeks were 122.84 ± 22.21 g and 173.30 ± 30.87, respectively. The mean of CG at 3 and 4 vi weeks of age were 9.40 ± 1.04 cm and 10.97 ± 1.33 cm, respectively. The mean of SL at 3 and 4 weeks of age were 3.25 ± 0.31 cm and 4.16 ± 0.46 cm, respectively. The heritability for BW, CG and SL at 3 weeks of age are 0.67, 0.49 and 0.29, and at 4 weeks of age are 0.83, 0.62, and 0.57, respectively. The heritability value range from moderate to high. The highest heritability is BW at 4 weeks of age (0.83 ± 0.038). The positive breeding value for BW, CG and SL at 3 and 4 weeks of age are 37.5% and 50%. The highest breeding value for body weight at 3 and 4 weeks of age is obtained by JBM 10. Body weight at 4 weeks of age could be used as selection criteria. Local Bangkok Cocks with positive breeding value for body weight should be selected and used them in the crossbreeding program.

Item Type:	Thesis (Sarjana)
Identification Number:	052305
Uncontrolled Keywords:	breeding value, crossbreeding, heritability.
Divisions:	Fakultas Ilmu Administrasi > Administrasi Pendidikan
Depositing User:	Budi Wahyono Wahyono
Date Deposited:	21 Jan 2024 23:58
Last Modified:	21 Jan 2024 23:58
URI:	http://repository.ub.ac.id/id/eprint/212788

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