Growth Performance of F1 and F2 Crosses of Horro, Potchefstroom Koekoek and Bovan Brown Chicken Breeds under Intensive Management System

maticha korato; Ahmed  Seid; Wasihun  Hassen; Mohamed  Aliy

maticha korato Bonga University https://orcid.org/0000-0002-1892-5648
Ahmed Seid Jimma University, college of agriculture and veterinary medicine, Jimma, Ethiopia
Wasihun Hassen Jimma University, college of agriculture and veterinary medicine, Jimma, Ethiopia
Mohamed Aliy Jimma University, college of agriculture and veterinary medicine, Jimma, Ethiopia

Keywords: Bovan Brown, Horro, Potchefstroom Koekoek, Crosses, growth performance

Abstract

This study was conducted to evaluate growth performance between F₁ and F₂ generations of Horro, Potchefstroom Koekoek and Bovan Brown crosses under intensive management at Jimma University College of Agriculture and Veterinary Medicine (JUCAVM), Southwest Ethiopia. Totally 450 F₁chicks were produced by crossing Horro with Potchefstroom Koekoek (HPK), Horro with Bovan Brown (HB) and Bovan Brown with Potchefstroom Koekoek (BPK) and 150 from each genotype. When F₁ generation was matured and started laying eggs, fertile eggs were collected from them and again a total 450 F₂chicks (150 from each genotype) were produced. Both generations were managed on phase basis and each genotype group was randomly assigned to three replications. Data were recorded on phase basis for both generations. Dressing percentages of cockerels were taken at 16 week age for both generations. Data collected was analyzed using SAS 9.3 and SPSS. As indicated current investigation, mean day-old chick body weight of F₁ was significantly heavier in all genotype than F₂. In contrast to brooding phase, only one genotype (HPK cockerels) showed significant difference (p<0.05) that F₁(1969.33g) being heavier than F₂(1818.95g) during growing phase. Similarly, in this phase the average body weight of pullets showed significance (p<0.05) for one genotype (HB) only that was F₁ (1262.00g) being heavier than F₂(1204.11g). Reverse to the first two phases, the average mature body weight of F₂was significantly heavier (p<0.05) than F₁generation for both sexes during layer. The average mature body weight of BPKF₁ cocks attained 2967g was heavier than obtained 2520g for BPKF₂ cocks. The average mature body weight of BPKF₁and HPKF₁ hens (1962.2g and 2075.6g) were heavier than the average mature body weight of BPKF₂and HPKF₂ hens (1723g and 1915.44g), respectively. The result of body weight gain between F₁ and F₂ indicated no significant difference (P>0.05). Feed conversion ratio (FCR) showed significant difference (p<0.05) during grower phase for pullets that HB genotype F₂ being better than F₁. Live body weight and dressing percentage of cockerels showed no significance (p>0.05) between generations. Mortality rate during all phases for both F₁ and F₂ was low and significantly different between generations except BPK had no mortality during growing phase for both generations. From present results, it was seen that crosses of these breeds up to F₂ generations showed good growth performance at on-station management. Therefore, it is important to produce crosses of these chicken breeds up to F₂ generation and recommended also to produce F₃ to investigate again with F₁ and F₂ generations.

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