Determinants of pastoral and agro-pastoral households’ participation in fodder production in Makueni and Kajiado Counties, Kenya
Pastoralism volume 8, Article number: 9 (2018)
Fodder production has been regarded as one of the suitable strategies for increasing feed availability for enhanced livestock production among pastoral and agro-pastoral communities in the drylands of Kenya. Previous studies indicate that factors determining participation in these practices vary from time to time and from one location to another. This study was conducted to assess the socio-economic and demographic factors influencing households’ participation in fodder production in Makueni and Kajiado Counties. Data was collected from 216 households through interviews using semi-structured questionnaire. Results indicate that gender of household head, education, social/development group membership and access to extension services were the most important factors influencing households’ participation in fodder production. There is need for technical support to the pastoral and agro-pastoral households towards starting and/or joining existing social groups, through which extension and training services can be offered. This would go a long way in enhancing fodder production in the arid and semi-arid lands of Kenya.
Livestock production is the main economic activity in the arid and semi-arid lands (ASALs) of Kenya (Kidake et al. 2016) which supports over 14 million people and 70% of the total country’s livestock population (MacOpiyo et al. 2013). A common characteristic of the ASALs is low and erratic precipitation associated with recurrent droughts (Irungu et al. 2014; Gikaba et al. 2014), making poor-quality pastures a major constraint to livestock production (Food and Agriculture Organization 2005). Recently, frequent droughts resulting from climate change, population increase and poor land use practices have significantly contributed to degradation and loss of natural pastures (Wasonga 2009; Munyasi et al. 2012; Koech 2014). Consequently, a lot of grazing lands have become bare and/or infested with invasive species (Kidake et al. 2016). As such, natural pasture degradation has been pointed out as the most limiting factor to livestock production in ASALs of Kenya (GoK 2011) with far-reaching effects being low production of milk and meat (Mapiye et al. 2006; Chinogaramombe et al. 2008), thus increasing vulnerability of pastoral livelihoods (Joosten et al. 2014).
Despite these challenges, livestock production still shows a 60% potential to alleviate ASAL population from poverty (GoK 2005; Irungu et al. 2014). Being the most important requirement for livestock production, availability of high-quality feeds directly reflects success in livestock production (MacOpiyo et al. 2013). Need to increase livestock productivity in the ASALs has led to high demand for better quality feeds, thus calling for better production practices (Gitunu et al. 2003; Manyeki et al. 2015). Fodder production technologies have therefore been introduced by the government of Kenya in the ASALs (Mnene et al. 2004). However, adoption of these technologies is dependent on a number of factors (Wanyama et al. 2003), which vary from region to region and from farmer to farmer (Singh et al. 2012).
A number of studies have been conducted on factors determining households’ participation in fodder production in Kenya. For instance, in their study on factors influencing adoption of fodder production among smallholder farmers in western Kenya, Wanyama et al. (2003) reported that adoption of fodder cropping was limited by lack of quality seed resources, input-output market problems and lack of credit facilities, as well as limited extension services. Although a different study by Irungu et al. (1998) noted that adoption of Napier grass in the highlands of Kenya was influenced by farmer education level, farm size, years of experience in farming and membership in cooperative group, they noticed that accessibility to credit facilities did not have any significant effect on adoption of this particular grass species. Most past studies have reported that prior to adoption of a new idea, farmers learn a great deal on-farm about the performance and suitability of fodder technologies to their farming systems, livestock production practices and its sustainability (Lenné and Wood 2004). In so doing, they learn about the potential benefits and risks that come with the technologies. Therefore, fodder options attuned to farmers’ local context are likely to be adopted. Most other studies (Koech 2014; Mureithi et al. 2016; Wairore et al. 2015) have focused mainly on the qualitative and quantitative benefits of fodder production, leaving only grey area on factors determining household participation in fodder production. It is against this background that the current study was conducted to assess factors influencing pastoral and agro-pastoral households’ participation in fodder production in the southern drylands of Kenya. The results of this study are expected to play an important role in enhancing adoption of fodder production technologies through identification of areas that need policy interventions, thus enhancing livestock production for improved and reliable food and livelihood security in the ASALs of Kenya.
The study sites were located in Makueni and Kajiado Counties in the ASALs of southern Kenya (Amwata et al. 2015). Makueni County falls between latitude 1° 35′ and 30° 00′ S and longitude 37° 10′ and 38° 30′ E with an area of 7965.8 km2. Kajiado County lies between latitude 1° 0′ and 3° 0′ S and longitude 36° 5′ and 37° 5′ E with an area of 21,901 km2 (CBS 1981; Government of Makueni County 2013; Ogutu et al. 2014) (Figure 1). The study areas were purposively selected because of their active participation in the Agricultural Research Supports Program Phase Two (ARSP-II) that was started in 1998 to develop and disseminate fodder production technologies in the ASALs of Kenya (Mnene et al. 1999; Manyeki et al. 2013). Some of the practices and technologies that were introduced and adopted by the households in these areas include enclosure of natural pastures to allow regeneration, and range reseeding through over-sowing (Manyeki et al. 2015; Kidake et al. 2016). These practices were adopted not only to provide feed for own livestock but also to earn additional income by selling hay and grass seed mainly to local livestock keepers and markets (Mnene 2006; Omollo 2017). Fodder production in the areas is rainfall dependent, with preferred grass species including those that are drought resistant, highly palatable and adapted to the local environments. Some of these grass species include Eragrostis superba, Cenchrus ciliaris, Chloris roxburghiana and Enteropogon macrostachyus (Mnene et al. 1999; Kidake et al. 2016). Also, these grass species are preferred on the basis of their ability to self-reseed and become annual after the first year of establishment. Farmers do not need to prepare land and apply fresh seeds for some years until productivity starts to decline. The main sources of grass seed are the Kenya Agricultural and Livestock Research Organization (KALRO) and farmers’ own source - harvesting from naturally growing grass to obtain startup seeds (Omollo et al. 2017). The production is small scale and dependent on own labour and use of locally available and cheap resources such as family labour and ox plough during land preparation and other production activities. The farmers mainly plant grass through seed broadcasting and control weeds by uprooting sprouting unwanted plant (Manyeki et al. 2015; Kidake et al. 2016; Omollo et al. 2017).
These study sites are characterized by highly variable and unpredictable rainfall patterns as well as more severe and extended drought (Gikaba et al. 2014; Amwata et al. 2015). They experience long rains from March to May and short rains from October to December (Gikaba et al. 2014; Amwata et al. 2015), with annual rainfall ranging from 300 to 1250 mm (Moss 2001; County Government of Makueni 2013). The temperatures in these areas range between 12 and 35 °C and are influenced by the season and topography (County Government of Makueni 2013; Gikaba et al. 2014).
Kajiado County is dominated by arid to semi-arid grasslands characterized by open grass plains, acacia woodlands, rocky thorn bush lands, swamps and marshlands (Ogutu et al. 2014). The main soils are poorly developed and shallow clayey soils in the floodplains; brown calcareous clay loams, sandy soils, ash and pumice soils in the higher elevations; and basement rock soils which dominate large areas of the County, making pastoralism the only appropriate land use in most parts of the County (Ogutu et al. 2014). In Makueni County the main vegetation includes Commiphora, Accacia and related genera notably of shrubby habitat, with dominant grasses being Cenchrus ciliaris, Eragrostis superba, Chloris roxburghiana and Enteropogon macrostachyus (Mganga et al. 2013). The common soils in this area are Ferrasols, Cambisols and Luvisols attributed to strong surface-sealing characteristics that lead to run-offs when heavy rains occur.
Smallholder farming and/or livestock keeping are the most important economic activities in these areas (Amwata et al. 2015). Land tenure and land use in Kajiado County is fast changing with private land ownership quickly replacing the communal ownership system; subdivision and commercialization of communal rangelands to secure legal title to land have also become common. Makueni County has high potential in horticulture and dairy farming especially the hilly parts. The lowlands are used for livestock keeping, cotton and fruit production, and the main fruits grown include mangoes, pawpaw and oranges. The main food crops produced in Makueni are maize, green grams, pigeon peas and sorghum (County Government of Makueni 2013).
Sampling design and data collection
Three sub-counties were purposively selected from each of the two study Counties, based on their active adoption of various fodder production technologies that had been introduced under the ARSP-II program. In Makueni County, the selected sub-counties included Kathonzueni, Makindu and Kibwezi while in Kajiado County, Kajiado Central, Oloitoktok and Mashuru sub-counties were selected. Systematic random sampling procedure was used in this study where 36 households were sampled in each of the six sub-counties, resulting in selection of 216 households for the interviews. The first household was randomly chosen, and the subsequent respondents were systematically selected after every second household.
The study was preceded by an exploratory survey in each of the six sub-counties under the guidance of the local extension workers, with the view of understanding the context to guide the study approach design and data collection tools. A pre-tested questionnaire was administered to the selected households through face-to-face interviews between June and August 2016; this captured information on socio-economic and demographic characteristics of the respondents. The survey was done with the help of 12 enumerators who had been carefully selected and adequately trained to give them full understanding of the questionnaire and the aim of the study. In addition, 11 focus group discussions with 8 to 12 participants, and 38 key informant interviews were conducted in the study areas in order to get clarification and better understanding of the information gathered from household interviews (Bryman 2008; Mugi-Ngenga et al. 2016). Group participants were knowledgeable people drawn from social or development groups that were also producing fodder within the six sub-counties in the study areas. On the other hand, key informant interview participants included selected individuals producing fodder, extension providers and hay and grass seed traders, as well as the main service providers drawn from government institutions and non-governmental organizations.
Descriptive and inferential statistical analyses were done using Statistical Package for Social Science (SPSS) version 22 and STATA version 14. Descriptive statistics including means, standard deviation (SD), frequencies and percentages were generated for the selected socio-demographic characteristics of the sampled households. Binary logistic regression was used to determine factors that influence households’ participation in fodder production.
Description of the dependent and hypothesized independent variables
The dependent variable used in the logit regression model was participation in fodder production. The sample was classified into fodder producers and non-producers based on the question whether the respondent was producing fodder or not. The value of “1” was assigned to fodder producing respondent, while “0” was assigned to a non-participating respondent.
The following independent variables were hypothesized to influence household’s participation in fodder production: age, gender and education of household head; size of land owned by household; herd size owned by the household; access to extension services; and membership in social or development group. It was assumed that the independent variables shown in Table 1 simultaneously influenced households’ decision to participate or not participate in fodder production technologies, ceteris paribus.
Age of household head
Age of household head is a key factor that is expected to directly influence availability and access to production and livelihood resources (Wasonga 2009; Lugusa 2015). Access to these resources is an important driving factor in wealth creation and accumulation, thus determining their availability for use by households. At above 35 years of age, household heads are likely to be richer than younger ones, increasing their chances of adopting fodder production technologies. However, studies measuring experience have demonstrated that square of age is negatively associated with uptake of new technologies (Morris and Doss 2001), implying that capacity of a household to adopt new technology is likely to decline after a certain age. Younger farmers/household heads are more risk takers and willing to improve their farming practices by adopting new technologies in order to diversify their livelihoods and increase their income sources, compared to their older counterparts. This study therefore hypothesized that age has a negative relationship with adoption of fodder production. The age of the household head in years was collected and analyzed as a continuous variable.
Gender of household head
Gender determines access to resources and assets particularly in the rural African context. In the sub-Saharan Africa, female-headed households have more limited access to productive resources such as livestock, land and finances compared to male-headed households (Adesina et al. 2000). With respect to this, women-headed households are constrained by poor/no access to natural resources (Wasonga 2009). This study therefore hypothesized that male-headed households are more likely to adopt fodder production technologies due to their higher access to key production resources than their female counterparts. Gender of household head was a dummy variable where a value of 1 was assigned to male-headed households and 0 to female-headed households.
Education level of household head
Education level of household head was measured in terms of number of years spent by the respondent in school. The level of education greatly influences major decision-making in the household. Basically, education creates an opportunity for pastoral and agro-pastoral households to diversify their livelihood sources (Muyanga 2008; Wasonga 2009). More educated household heads are expected to have better reasonability and deeper insight, enabling them to easily understand the benefits of new technologies, hence their adoption (Okello et al. 2009). Education level was therefore expected to have a positive influence on adoption of fodder production technologies. The education level of a household head was assigned the value of 0 if not educated, 1 if attained primary education, 2 for secondary education and 3 for household heads with tertiary education.
Size of land owned
Total land size owned by households reflects the availability and portion of land that a household can devote for fodder production. Households with larger parcels of land are more likely to set aside some portions of their lands for fodder production, leading to the hypothesis that land size has a positive relationship with participation in fodder production. The size of land owned in acres was treated as continuous variable; the exact values as given by the respondent were used in the analysis.
Membership in a social or development group
This provides social capital, and helps farmers to pool resources for collective action. Group membership also increases the capacity of members to access services such as credits, extension and information. Participation in such groups is believed to strongly facilitate adoption of new technologies (Salasya et al. 1996). This study hypothesized that membership in a social/development group has a positive influence on adoption of fodder production practices by households. Membership in a social group was a dummy variable where the value 1 was assigned to the households that are members to such groups, while 0 was assigned to the households that are not members of any social groups.
Herd size reflects wealth status of a household in pastoral communities (Wasonga 2009). This study hypothesized that participation in fodder production is dependent on number of livestock a household owns and that there is a positive relationship between the two. Herd size was measured in terms of the total number of livestock owned by a household converted into Tropical Livestock Units (TLUs), where 1 TLU was equated to 250 kg mature live animal (Kenya Agricultural Research Institute/ODA 1996). In this study, one bull was equivalent to 1.29 TLU, a cow = 1 TLU, a calf = 0.4 TLU and a sheep or goat = 0.11 TLU. Conversion of livestock numbers into TLU equivalent enabled standardization of different animal kinds and classes into a universal unit, thus aiding comparisons between household herds, and was analyzed as continuous variable.
Access to extension and training services
Provision of extension and training services to farmers is presumed to capacitate households to adopt new technologies. This offers them basic and technical skills and knowledge on fodder production. The current study hypothesized that access to extension and training of fodder production together with sensitization on the importance of the practice positively relates to adoption of fodder production. Access to extension and training services was a dummy variable where a value of 1 was allocated to household heads with access to extension and training services and 0 to household heads with no access.
Specification of the binary logit model
The model choice of a study is based on the nature of the dependent variable and the objective of the study. The dependent variable in this study was binary that assumed only two values: 1 if the respondent was producing fodder and 0 if otherwise. This kind of variable is normally estimated using logit or probit models, both of which estimate parameters using maximum likelihood approach. While probit model assumes normal distribution error term, the logit model takes a logistic distribution of the error term. This study used the binary logit model due to consistency of parameter estimation associated with the assumption that error term in the equation has a logistic distribution (Baker 2000; Ravallion 2001).
The behavioral model described in the equations below was used to evaluate factors that influence households’ participation in fodder production (Gujarati 1995).
This means that there is a functional relationship (f) between the survey observation (Y i ) and the stimuli ti, where,
Y is the response for the ith observation with binary variable 1 = producers and 0 = non-producers. t i is the stimulus index for the ith observation. It is presumed that there is a threshold index for each household, t i * such that if t i * > t i th household is observed as a participant in fodder production and if t i * < t i , then the household is a non-participant. The probability of such a household participating in fodder farming was computed using Equation 3:
The model for the factors hypothesized to influence households’ decision whether to participate in fodder production or not was then re-written as:
Where Y = the natural log of the probability of participating in fodder production (P), divided by the probability of not participating (1 − P).
β i = coefficient of factors influencing participation in fodder production
X i = factors that are hypothesized to influence participation in fodder production
ε ι = error term
The linear regression model for this study was specified as shown in the Equation 5.
Several binary logistic regressions were conducted with participation in fodder production as the regress and until the best fit of the model was obtained. The variables that best defined the estimated model were determined based on the coefficient of determination (R2), adjusted R2, chi-square value, the direction of influence of the independent variables, as well as the number of significant variables in the model.
Multicollinearity statistical test: Variance inflation factor
It was important to ensure that the explanatory variables used in the binary logit model do not correlate with one another, which occurs when two or more independent variables are linearly related (multicollinearity). Multicollinearity usually occurs in all sample data necessitating the need to test the level of its severity in the exogenous explanatory variables (Koustoyiannis 1973). This was done through the test of the variance inflation factor (VIF). Multicollinearity was then eliminated through excluding or merging of some variables during analysis so as to obtain a thrifty model. Long (1997) expression for empirical estimation of VIF was followed:
where R i 2 is the R2 of the artificial regression with the ith independent variable as the dependent variable.
Results and discussions
Results of multicollinearity tests
The VIF of the explanatory variables were found to range from 1.051 to 1.886 with a mean of 1.381 as shown in Table 2. The fact that the VIFs for the independent variables were less than five (< 5) provided satisfactorily justification for their inclusion in the logit model (Maddala 2001) as there was no serious problem of multicollinearity.
Socio-demographic characteristics of the sampled households
Tables 3 and 4 show descriptive statistics of the explanatory variables included in the model. The results showed that in the study areas, fodder producers were significantly (p < 0.01) more educated with mean of 9.14 ± 3.99 years of education than non-producers whose mean years of education was 5.80 ± 4.13. Households that adopted fodder production had significantly (p < 0.05) smaller average land sizes (13.73 ± 16.81 hectares) than non-producers who had averagely larger land sizes (19.72 ± 23.29 hectares). The mean age of household head and herd sizes did not have any significant difference between fodder producers and non-producers.
In addition, most (74%) of fodder producing households were male-headed compared to 55.3% for non-producing households. Similarly, most (74%) of the fodder producers were members of certain social groups, compared to only 23.5% of the non-producing households (Table 4). More (78.6%) fodder producers had access to extension services than non-producing households (18.8%). These results indicate that gender, education level, size of land owned, group membership and access to agricultural extension and training services comprise important factors that may influence participation in fodder production among the pastoral and agro-pastoral communities. These findings corroborate those of Irungu et al. (1998) who reported similar factors among others to be primarily important in influencing adoption of agricultural technology.
Results of the binary logit regression
Table 5 shows the results of the binary logit regression model. Seven variables were tested of which five were statistically significant. The independent variable explains 57% (R2 = 0.57) of the variation in households’ participation in fodder production in the study areas. Gender of the households’ head had a positive and significant (p < 0.05) influence on households’ participation in fodder production, implying that male-headed households are more likely to participate in fodder production than those headed by females. This could be attributed to the high labour requirements of these practices which most women may not be able to provide (Manyeki et al. 2015). In addition, women in the traditional context are more engaged with domestic responsibilities, and this is especially true among the communities under study. This limits their access to agricultural information, trainings and extension services (MacOpiyo et al. 2013; GoK 2015; Kidake et al. 2016). The marginal effects show that facilitating both gender participation would increase chances of adopting fodder production technologies by 20%.
Education level of the household heads showed a positively significant (p < 0.05) influence on possibility of a households’ participation in fodder production, suggesting that households with higher education levels have higher chances of undertaking fodder production, unlike their illiterate or less educated counterparts. Manyeki et al. (2013) reported higher adoption of natural pasture improvement (NaPI) technologies in Makueni and Narok Counties where household heads were more educated than in Mashuru where households were comparatively less educated. Higher education enhances understanding of the value of agricultural technologies and innovations and therefore their adoption (Okello et al. 2009; Oladeebo and Masuku 2013; Asiry et al. 2013).
Participation in a social group and access to extension and training services showed positively significant (p < 0.01) influence on households’ participation in fodder production. This implies that household heads who participate in groups and with better access to agricultural and extension services were more likely to adopt fodder production. Specifically, the marginal effects explain that an individual’s group membership increases their probability of adopting fodder production technologies by 29%, while a unit increase in access to extension and training services increases adoption chances by 49%. This could be linked to the fact that working in organized farmer groups has many benefits such as easier and enhanced access to financial and extension services (Saito et al. 1992; De Haan 2001; Olila, 2014), as well as free or subsidized inputs such as startup grass seeds. Government institutions as well as NGOs have successfully implemented many agricultural development programs through working with farmer groups (Weinberger and Jütting 2001). Producer groups in Baringo County have successfully established pasture and rehabilitated degraded lands mainly through the support offered to them by various NGOs such as the Netherlands Development Organization (SNV), Rehabilitation of Arid Environments (RAE) Trust, and Kerio Valley Development Authority (KVDA) (Cooperation for Assistance and Relief Everywhere 2013; Lugusa et al. 2016).
Herd size was found to have positive and significant (p < 0.05) relationship with adoption of fodder production, indicating that households with large herds have higher probability of adopting fodder production than those with smaller herds. This is because, under the current situation where there is decline in natural pastures due to climate change and variability, many pastoralists opt to enhance feed availability, as well as quality by adopting various fodder production technologies.
Pastoralist households with large herds but do not produce fodder tend to remain mobile especially in the dry seasons when pasture scarcity greatly limits livestock production. However, the challenge of diminishing communal grazing fields due to subdivision of rangelands into private parcels has threatened the viability of mobility as survival strategy (Africa Development Bank Group (AfDB) 2010). This can be regarded as an impulsive force leading to establishment of fodder by livestock keepers with larger herds.
The results of this study indicate that gender, group membership and access to extension and training services are the most important factors that encourage and promote households’ participation in fodder production. Household heads that have access to extension services and are also members of social groups are more likely to adopt fodder production. This is due to the fact that extension workers and other supporting organization prefer to reach out to farmers through their organized social groups. Efforts towards out-scaling fodder production should target access to extension and training services and support households to start and/or join existing social groups, which are known to be avenues for accessing extension and training services with the ultimate goal of ensuring sustainable and efficient fodder production in the drylands of Kenya.
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The authors thank the Regional Universities Forum for Capacity Building in Agriculture (RUFORUM) for funding and the University of Nairobi and the Kenya Agricultural and Livestock Research Organization for their support in facilitation. We also thank the fodder producers and other individuals in Makueni and Kajiado Counties for providing information for this study.
The authors declare that they have no competing interests.
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Omollo, E.O., Wasonga, O.V., Elhadi, M.Y. et al. Determinants of pastoral and agro-pastoral households’ participation in fodder production in Makueni and Kajiado Counties, Kenya. Pastoralism 8, 9 (2018). https://doi.org/10.1186/s13570-018-0113-9