Olwande Portas Odula, Ogara William O, Okuthe Samwel O, Muchemi Gerald, Okoth Edward, Odindo Maurice O, Adhiambo Rubin F
Department of Veterinary Services, Mt. Elgon District, P.O. Box 842-50204, Kimilili, Kenya.
Trop Anim Health Prod. 2010 Feb;42(2):283-8. doi: 10.1007/s11250-009-9418-4. Epub 2009 Aug 13.
The present study was conducted to assess the performance of indigenous chickens under extensive system in southern Nyanza, Kenya. The study was carried out in two phases in Komolorume and Kawere villages in Rongo and Rachuonyo districts, respectively. The first phase was a cross-sectional study in 81 farms selected by cluster sampling to get the overview of the indigenous chicken production. A four-month prospective longitudinal study in 60 farms randomly selected from the previous 81 farms followed. Mean flock sizes per household were 20 and 18 birds in Komolorume and Kawere, respectively. Overall mean flock size was 19 birds ranging from 1 to 64. The mean clutch size, egg weight and hatchability were 12 eggs, 48 g and 81% respectively in Komolorume and 10 eggs, 45 g and 70%, respectively, in Kawere. The chick survival rates to the age of eight weeks were 13% and 10% in Komolorume and Kawere, respectively. Mean live weights for cocks and hens were 2096 g and 1599 g in Komolorume and 2071 g and 1482 g in Kawere, respectively. The mean household cock to hen ratio was 2:5 and 2:4 for Komolorume and Kawere, respectively. The mean chick to grower to adult ratio per household was 8: 6:6 in Komolorume and 8:4:6 in Kawere. Clutch sizes and hatchability rates were significantly higher in Komolorume village (P < 0.5). The productivity of the indigenous chickens was shown to be low compared to that of the improved chickens in other parts of the world.
本研究旨在评估肯尼亚尼亚萨南部粗放养殖系统下本地鸡的生产性能。该研究分两个阶段分别在朗戈区的科莫洛鲁梅村和拉乔尼奥区的卡韦雷村进行。第一阶段是通过整群抽样在81个农场开展的横断面研究,以了解本地鸡的生产概况。随后,从之前的81个农场中随机选取60个农场进行了为期四个月的前瞻性纵向研究。科莫洛鲁梅村和卡韦雷村每户的平均鸡群规模分别为20只和18只。总体平均鸡群规模为19只,范围从1只到64只。科莫洛鲁梅村的平均窝卵数、蛋重和孵化率分别为12枚蛋、48克和81%,卡韦雷村分别为10枚蛋、45克和70%。科莫洛鲁梅村和卡韦雷村八周龄雏鸡的存活率分别为13%和10%。科莫洛鲁梅村公鸡和母鸡的平均活重分别为2096克和1599克,卡韦雷村分别为2071克和1482克。科莫洛鲁梅村和卡韦雷村每户公鸡与母鸡的平均比例分别为2:5和2:4。科莫洛鲁梅村每户雏鸡、生长鸡和成年鸡的平均比例为8:6:6,卡韦雷村为8:4:6。科莫洛鲁梅村的窝卵数和孵化率显著更高(P<0.5)。与世界其他地区改良鸡的生产力相比,本地鸡的生产力较低。