Herd Characteristics on Smallholder Dairy Farms in Western Kenya

Wanjala Simon P. Omondi, B. Njehia
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引用次数: 16

Abstract

A cross-sectional proportional and stratified random sample survey of 400 smallholder dairy farms in Western Kenya was carried out to characterize the herd structure and determine its performance between July and October 2013. The results showed that the dominant improved breeds kept comprised exotic cattle-zebu crosses (41.7%), Friesians (34.3%), Aryshires (22.4%), Jerseys 1.6% with significant differences (p<0.05) in milk yields. The mean herd size was 2.46, while a proportion of 36.4% and 15% of the animals were lactating cows and heifers respectively. The mean milk yield /cow/day was 6.47 litres with 89.3% of the farms producing less than 10 litres of milk/cow/day. Average quantity of milk produced was 1168 litres/cow/year. Mean lactation length was 7.67 months (230 days) with majority of farms (77.8%) recording a lactation period of 5-7 months (150-210 days). The mean calving interval was 14.77 months (430 days) with a range of 12-36, while mean age at first calving was 28.16 months with a range of 24-38 months. 98% of the farms used Napier grass as the main fodder. The study concluded that the low performance of dairy herds in the region may be attributed to type of breeds kept, low numbers of lactating cows and replacement heifers, , short lactation period and utilization of low quality feed resources. It is recommended that management skills, strong institutional linkages, support for commercial rearing of dairy breeding stock, and feeds diversification programme should be developed to improve performance of dairy herds in the region.
肯尼亚西部小农奶牛场的牛群特征
2013年7月至10月,对肯尼亚西部400个小农户奶牛场进行了横断面比例分层随机抽样调查,以确定牛群结构特征并确定其表现。结果表明:优势改良品种为外来牛-zebu杂交(41.7%)、弗里斯马(34.3%)、阿利夏(22.4%)、泽西(1.6%),产奶量差异显著(p<0.05);平均畜群规模为2.46只,其中乳牛和小母牛分别占36.4%和15%。平均每头奶牛/天的产奶量为6.47升,89.3%的农场每头奶牛/天的产奶量少于10升。平均产奶量为每头奶牛每年1168升。平均泌乳时间为7.67个月(230天),大多数农场(77.8%)的泌乳时间为5-7个月(150-210天)。平均产犊间隔为14.77个月(430天),范围为12 ~ 36个月;平均初产龄为28.16个月,范围为24 ~ 38个月。98%的养殖场以纳皮尔草为主要饲料。研究认为,该地区奶牛群生产性能低下可能与品种类型、泌乳奶牛和替代母牛数量少、泌乳期短以及优质饲料资源利用率低有关。建议应制订管理技能、强有力的机构联系、对奶牛种畜商业饲养的支持和饲料多样化方案,以改善该区域奶牛群的生产性能。
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