Breeding practices and trait preferences of smallholder farmers for indigenous sheep in the northwest highlands of Ethiopia: Inputs to design a breeding program

被引:23
作者
Abebe, Abiye Shenkut [1 ,2 ]
Alemayehu, Kefyalew [1 ]
Johansson, Anna Maria [3 ]
Gizaw, Solomon [4 ]
机构
[1] Bahir Dar Univ, Dept Anim Prod & Technol, Bahir Dar, Ethiopia
[2] Debre Tabor Univ, Dept Anim Sci, Debre Tabor, Ethiopia
[3] Swedish Univ Agr Sci, Dept Anim Breeding & Genet, Uppsala, Sweden
[4] Int Livestock Res Inst ILRI, Addis Ababa, Ethiopia
来源
PLOS ONE | 2020年 / 15卷 / 05期
关键词
GENETIC-PARAMETERS; BODY MEASUREMENTS; MANAGEMENT; OBJECTIVES; LIVESTOCK; MODEL;
D O I
10.1371/journal.pone.0233040
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The aim of this study was to identify breeding practices and trait preferences for indigenous sheep in three districts (Estie, Farta and Lay Gayient) located in the northwest highlands of Ethiopia. Questionnaire survey and choice experiment methods were used to collect data from 370 smallholder farmers. Respondents were selected randomly among smallholder farmers who own sheep in the aforementioned districts. A generalized multinomial logit model was employed to examine preferences for sheep attributes, while descriptive statistics and index values were computed to describe sheep breeding practices. Having the highest index value of 0.36, income generation was ranked as the primary reason for keeping sheep, followed by meat and manure sources. The average flock size per smallholder farmer was 10.21 sheep. The majority of the smallholder farmers (91%) have the experience of selecting breeding rams and ewes within their own flock using diverse criteria. Given the highest index value of 0.34, body size was ranked as a primary ram and ewe selection criteria, followed by coat color. Furthermore, choice modeling results revealed that tail type, body size, coat color, growth rate, horn and ear size have shown significant influences on smallholder farmers' preference for breeding rams (P<0.01). The part-worth utility coefficients were positive for all ram attributes except ear size. For breeding ewes, mothering ability, coat color, body size, lambing interval, growth rate, tail type and litter size have shown significant effects on choice preferences of smallholder farmers (P<0.05). Moreover, significant scale heterogeneity was observed among respondents for ewe attributes (P<0.001). Overall, the results implied that sheep breeding objectives suitable for the northwest highlands of the country can be derived from traits such as linear body measurement, weight and survival at different ages, and lambing intervals. However, selection decisions at the smallholder level should not only be based on estimated breeding values of traits included in the breeding objective but instead, incorporate ways to address farmers' preference for qualitative traits.
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页数:18
相关论文
共 47 条
  • [1] Amare B., 2012, Animal Genetic Resources, P117
  • [2] [Anonymous], 2005, APPL CHOICE ANAL PRI
  • [3] [Anonymous], 2018, STAT B, VII
  • [4] [Anonymous], 2008, Animal Genetic Resources/Resources Genetiques Animales/Recursos Geneticos Animales
  • [5] [Anonymous], 2013, The Federal Democratic Republic of Ethiopia Central Statistical Agency (CSA), Agricultural Sample Survey. Volume vii, report on crop and livestock product utilization (private peasant holdings
  • [6] Analysis of production objectives and breeding practices of dairy goats in Kenya
    Bett, R. C.
    Kosgey, I. S.
    Kahi, A. K.
    Peters, K. J.
    [J]. TROPICAL ANIMAL HEALTH AND PRODUCTION, 2009, 41 (03) : 307 - 320
  • [7] Bimerow T., 2011, Online Journal of Animal and Feed Research (OJAFR), V1, P299
  • [8] Box G., 2005, STAT EXPT DESIGN INN
  • [9] Dagnew Y., 2017, Open Journal of Animal Sciences, V7, P179, DOI 10.4236/ojas.2017.72015
  • [10] Identification of smallholder farmers and pastoralists' preferences for sheep breeding traits: choice model approach
    Duguma, G.
    Mirkena, T.
    Haile, A.
    Okeyo, A. M.
    Tibbo, M.
    Rischkowsky, B.
    Soelkner, J.
    Wurzinger, M.
    [J]. ANIMAL, 2011, 5 (12) : 1984 - 1992