Progress 10/18/13 to 09/30/17
Outputs Target Audience:The target audience included small and limited resource forest land owners in the Black belt region of Alabama and the sorrounding areas, goat producers, cattle producers, extension professionals, researchers, foresters, students, and NRCS representatives, USDA Alabama officials andother stake holders. The reserachers from other 1890 schools also benfitted from the project. Changes/Problems:The project demonstrated that goats can be used as tools for vegetation management but the implementation ofproject recommendations depend on many factors. The complexity of vegetation including browse heights are critical. There are many plant species that goats cannot do not relish. Goats also need to be trained to eat certain species of plants. The long-term effects of using goats under pine silvopasture systems and its impact impacton soil mineral composition, soil compaction, and vegetation competition needs to be further studied.Future research also needs to be developed to identify variables and their interrelationships to aid in developing methods to model the effects of using goats in agroforestry conditions. For example, methods need to be developed that allows individuals to take measurements and estimate the number of goat days that are optimum. This will require that procedures used for measuring crown cover density, soil compaction, and biomass need to be validated in future experiments for an agroforestry system. Furthermore, the relationship between the indicator and animal or soil measurements needs to be studied. Methods employed in agronomic studies may not be reliable under agroforestry conditions due to the fact that agronomic studies generally are working with a more homogeneous stand of plants and soil conditions than occurs in agroforestry areas. Future studies should evaluate methods of obtaining values that have a strong relationship between indicator and the attribute that is being studied. What opportunities for training and professional development has the project provided?We trained several undergraduate students in the project and four graduate students. The projects included as to how goats can be integrated into silvopasture systems, collect soil and understory vegetation samples, determine understory species identification, measure browse canopy cover, measure tree heights and diameter at breast height. Four students also successfully completed their MS research projects in this project and graduated. We have a tree grower in Selma Alabama who has integrated goats into pine stands. A field day was organized at the Selma site where we invited many tree growers, goat producers and other stake holders. Studnets learned the followsing skiils from the prject: 1) How to identify species preferred by goats 2) How goats's grazing behavours can impact pine silvopasture production systems 3) Idela foarge species that can be sustainable grwon unmder silvopasture consdtions How have the results been disseminated to communities of interest?Several workshops and fiedls days were condcuted to disseminate the knoweldge gained from theproject related to use of gaots in vegetaion managmnet. The list is given below. List of Agroforestry Workshops: 2013-2017 Training for sustainable year-round forage production and grazing/browsing management in the southeastern region, March 25-26, 2014 at Tuskegee University, Tuskegee, Alabama Agroforestry/Silvopasture Workshop conducted on May 3, 2014 at Tuskegee University, Tuskegee, Alabama Agroforestry/ Silvopasture Workshop, September 11, 2015, at Atkins Agroforestry site, Tuskegee University, Tuskegee, Alabama Training on Sustainable Agroforestry Practices, September 30, 2016 at Tuskegee University, Tuskegee, Alabama Silvopasture and Woodland Grazing for Sustainable Management conducted on December 4, 2017 at Tuskegee University, Tuskegee, Alabama Agroforestry for a Vibrant Future: Connecting People, Creating Livelihoods, Sustaining Places;15th NAAC June 27-29, 2017 on the Campus of Virginia Tech in Blacksburg, Virginia USA. Training on Sustainable Agroforestry Practices, September 22, 2017 at Tuskegee University, Tuskegee, Alabama What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts What was accomplished under these goals?
Objective # 1: This study demonstrated that goats are capable of reducing understory brush cover with low intense grazing pressure.There were no detrimental effects on goats, soil, and trees under the longleaf pine stands for the study period. However, the hardwood understory was very dense and the trees were too large to be destroyed by grazing goats. Procedure: A 4.86 ha of eight- to nine-year old longleaf pine stands with 1,112 trees/ha was divided into twelve 0.40 ha plots. The understudy vegetation contained mainly tree species consisting of Quercus marilandica (Blackjack oak), Quercus nigra (Water oak), Quercus falcate (Southern red oak or Spanish oak), Quercus stelatta (Post oak), Pinustaeda (Loblolly pine) and Pinus echinata (Shortleaf pine), Diospyrus virgana (Common persimmon) and Ulmas alata (Winged elm), etc. The shrubs and vine species consisted of Ilex vomitoria (Yaupon), Ligustrum sinense (Chinese privet), Smilax Spp. (Greenbriar), Eupatorium capallifolium (Dogfennel), Lonicera japonica (Japanese honeysuckle), Rubus spp. (Blackberry), Pteridium aquilinum (Braken), Vitis rotundifolia (Muscadine), and Callicarpa americana (American beautyberry). Results: The predominant grass cover was Andropogon virginicus (Broomsedge). Fifty-four mature Kiko goats (initial BW = 47.3 ± 2.1 kg) were allocated randomly to four treatments (0, 3, 6, 9 goats/0.4 ha) with three replications per treatment for 10 weeks according to a completely randomized block design. The understory biomass height and quantity (measured within 0.25 m2 quadrats), soil bulk density, crown cover densities, and animal productivity were analyzed using the GLM procedure ofSAS and using the initial values as covariates. The tree damage and diameter at breast height at 1.37m were monitored (data not reported here). Results showed that the initial and the final soil bulk density and soil compaction were similar among treatments (P > 0.05). Similarly, plant biomass heights and quantity were not significantlydifferent (P > 0.05) among treatments both at the beginning and end of the grazing. Average daily BW gains were not significantly different (P = 0.76) but daily gains were close to zero. The combined final crown cover density percent at 2.0 m decreased linearly (P < 0.05) with increasing stocking rates. Impact: The results suggest that goats can be used as vegetation management tolls successfully. Objective # 2. The objective was to study the grazing behavior of goats to develop a suitable pasture and grazing systems and the impact on soil ecosystem. Procedure: Study plots consisted of mixed-pine (loblolly,Pinus taeda L.,and longleaf,Pinus palustrisMill.) silvopastures with cool-season (3 plots, one acre each) and warm-season forages (3 plots, one acre each), and pine-hardwood mixed woodland (5 plots, one acre each). Pine trees were approximately 11 years old with tree density of 147±21.1 trees/acre (longleaf 52.14% and loblolly 47.86%) in the silvopasture plots. All study plots were rotationally grazed with 29 Kiko wethers (7-12 months old): silvopasture plots with cool-season forages during spring, and the silvopasture plots with warm-season forages and woodland plots in summer 2015. After the goats were moved out of each plot, trees were inspected for damage and the damaged portions were measured. Results: 131 trees were debarked, damage started from 9.4±0.6 inch from the base of the trees up to the height of 27.7±1.03 inch from the initial damage point. Out of the total damaged tree, 92% was in silvopastures with cool-season, and 98% were longleaf pine. Around nine percent of the damaged trees were severely debarked. Damage occurred mostly during the late spring grazing. Results suggest that pine trees can be susceptible to the damage by grazing goats even after the terminal buds are far beyond the reach of grazing animals, and the extent of damage may vary depending on the experience of goats, season, and the understory vegetation available for grazing. Impact: Findings have provided a new insight and caution in using goats in systems containing grown longleaf pine trees. Objective # 3.To evaluate the performance of goats on woodland plant species. Procedure: Six to eight month old Kiko wethers (29) were rotationally grazed in five fenced plots (one-acre each), and two plots were used as control where no goats were grazed. Body weight, condition score, and FAMACHA score were measured every two weeks during the study period of eight weeks. The first measurement was taken after one week of adjustment period, and the last one at the end of the study. Inventory of the major plant species present in the study plots was prepared, browse height reached by goats measured, and the quality was evaluated. Results: The overall weight gained by the goats within the study period was 1 lbs. (59±1.4 to 60±1.5 lbs.), with decreasing average body condition score (2.4±0.06 to 1.9±0.10) and improving average FAMACHA score (3±0.10 to 2.8±0.17). The average browsing height was 56±0.6 inches with goats reaching to a greater height for sumac, kudzu, yaupon, black cherry, and winged elm. Kudzu had the highest level of protein (CP) (15%) followed by dog fennel (14%) and beautyberry (12%). The neutral detergent fiber (NDF) was highest in persimmon (55.90%) followed by winged elm (55.38%) and willow oak (52.16%). The acid detergent fiber (ADF) was the highest in black gum (20.35%) followed by sumac (19.16%) and wild plum (16.8%). Tannin content was higher in sparkleberry (8.21%), winged elm (7.68%), and wild plum (5.69%) than in other browse species. Impact: Goat farmers can use these finding for implementing proper strategies for utilizing the woodland vegetation to feed their animals and minimize the requirements for purchased feed. Objective # 4.Suitable forages to be grown in southern-pine silvopasture systems for goats. The specific objectives were to identify suitable forage species that can be grown in southern-pine silvopasture system, and to determine goats' preference for and performance on the selected forages Procedure: Studies were conducted at Tuskegee University, Tuskegee, AL from 2014 to 2016. Eight species of cool-season forages and five species of warm-season forages were cultivated in mixed-pine silvopasture (longleaf, Pinus palustris Mill. and loblolly-pine, Pinus taeda L.) in a randomized block design with three replications. Forage biomass samples were collected and processed for dry matter and quality (crude protein, CP; acid detergent fiber, ADF; neutral detergent fiber, NDF; lignin). Forage heights before and after grazing were measured. Photoplot were established for each treatment in each replication, and pictures of the photoplots taken before and after grazing to assess the vegetation removal by goats. Once the pre-grazing samples, measurements, and pictures taken, silvopasture plots were rotationally grazed with 29 Kiko wethers (≥7 months). Goats had access to mineral supplement, water, and shelters. Results: All selected forages, except one, produced well and readily grazed by goats. Goats performed better (p<0.001) while grazing cool-season forages (103±8.5 g/d) versus grazing on warm-season forages (60±9.3 g/d) Impact: Finding of this research will be useful for farmers and professional for developing southern-pine silvopasture systems or enhancing the existing silvopasture systems by cultivating one or combination of multiple forages identified from this research. Objective # 5.Socio-economic impact of using goats in a pine silvopasture system The data compilation to evaluate socio-economic impact of using goats in a pine silvopasture system is on-going because pine silvopasture systems are long-term enterprise. The accomplishments for the objective # 5 will be submitted in the next five-year cycle of the McIntire Stennis Forestry Research project.
Publications
- Type:
Journal Articles
Status:
Published
Year Published:
2016
Citation:
ARTICLES:
1. Bowie, D., Anthony S. Kumi, Byeng R. Min, Ronald C. Smith, A. Elliott, and N. K. Gurung. 2016. Preliminary observations on effects of using different stocking rates of meat goats to control understory vegetation in longleaf pine stands. Agroforest. Syst. DOI 10.1007/S10457-016-9956-5.
2. Karki, U., J. Idassi, S. R. Mentreddy, N. Gurung, L. Karki, S. Bambo. 2016. Agroforestry research and extension education at 1890 universities and its impact in the Southeast. Agroforest. Syst. DOI 10.1007/s10457-016-9934-y.
3. Khatri, R., U. Karki, J. Bettis, U. Karki, and Y. Karki. 2016. "Grazing with Goats Changed the Woodland Plant-Species Composition During Summer," Professional Agricultural Workers Journal: Vol. 4: No. 1, 10.
Available at: https://tuspubs.tuskegee.edu/pawj/vol4/iss1/10
4. Kumi, A. S. I. Howard, R. Smith, N. Gurung, and A. Elliott. 2015. Impact of Using Different Stocking Rates of Goats Under Pine Plantation on Plant Species occurrences and Animal Productivity," Professional Agricultural Workers Journal: Vol. 2: No. 2, 5. Available at: http://tuspubs.tuskegee.edu/pawj/vol2/iss2/5.
5. Poudel, Sanjok; Karki, Uma; McElhenney, Wendell; Karki, Yubaraj; Tillman, Asha; Karki, Lila; and Kumi, Anthony. 2017. "Challenges of Stocking Small Ruminants in Grazing Plots with Dormant Browse Species," Professional Agricultural Workers Journal: Vol. 5: No. 1, 5. Available at: https://tuspubs.tuskegee.edu/pawj/vol5/iss1/5
6. Min, B.R., K. Hernandez, W.E. Pinchak, R.C. Anderson, J.E. Miller, and E. Valencia. 2015. Effects of plant tannin extracts supplementation on animal performance and gastrointestinal parasites infestation in steers grazing winter wheat. Open J. Animal Science, 5: 343-350. http://dx.doi.org/10.4236/ojas
7. Min, B.R., D. Perkins, C. Wright, A. Dawod, B. J. Min, T. H. Terrill, J.-S. Eun, R. Shange, S. Y. Yang, and N. Gurung. 2015. Effects of feeding two different tannin-containing diets on ruminal fermentation profiles and microbial community changes in meat goats. Agric. Food Anal. Bacteriol. 5: 153-165.
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Progress 10/01/15 to 09/30/16
Outputs Target Audience:Graduate and undergraduate students, tree growers, goat producers, NRCS and USDA field officials, researchers and other stakeholders. Changes/Problems:The project was delayed due to our inability to complete the fencing or cross-fencing of the experimental plots. We are very hopeful that the work will be done by the spring of 2017 and the remaining objectives accomplished. What opportunities for training and professional development has the project provided?Both the graduate and undergraduate students were exposed to the research methods in the area of agroforestry especially in the integration of goats under pine silvopasture. Similarly, training opportunities were provided to tree growers, livestock especially goat producers and other stakeholders. In addition, two graduate students received their MS degrees from the project. How have the results been disseminated to communities of interest?Results were disseminated to the scientific community and other stakeholders through publications. What do you plan to do during the next reporting period to accomplish the goals?Every effort will be made to accomplish the remaining objectives by the next reporting period.
Impacts What was accomplished under these goals?
Accomplishments: Objective # 1: This study demonstrated that goats are capable of reducing understory brush cover with low intense grazing pressure. There were no detrimental effects on the goats, soil, and trees under the longleaf pine stands. However, the hardwood understory was very dense and the trees were too large to be destroyed by grazing goats because these tree species were left for several years without any management. This study continues to provide baseline date for planning future agroforestry and vegetation management projects Objective # 2. Most frequent (83%-98%) and severe debarking occurred with longleaf pines in the silvopasture plots with cool-season forages during the winter/spring grazing period that led to death of several trees with severe damage. There was no significant debarking of pine trees during warm-season grazing in the silvopasture plots or woodlands. Findings have provided a new insight and caution in using Kiko wethers in silvopasture systems containing longleaf pine trees, especially during the winter/spring grazing.
Publications
- Type:
Journal Articles
Status:
Accepted
Year Published:
2016
Citation:
Karki, U., J. Idassi, S. R. Mentreddy, N. Gurung, L. Karki, S. Bambo. 2016. Agroforestry research and extension education at 1890 universities and its impact in the Southeast. Agroforest. Syst. DOI 10.1007/s10457-016-9934-y.
Deidre D. Bowie, Anthony S. Kumi, Byeng R. Min, Ronald C. Smith, A. Elliott, and N. K. Gurung. 2016. Preliminary observations on effects of using different stocking rates of meat goats to control understory vegetation in longleaf pine stands. Agroforest. Syst. DOI 10.1007/S10457-016-9956-5.
Khatri, R., U. Karki, Y. Karki, N. Gurung and B. R. Min. 2016. Composition and Quality Assessment of the Woodland Browse Species and Goats Performance Study under Woodland. doi:10.2527/ssasas2015-037. Journal of Animal Science 2016 94:18-18.
Karki, U., J. Idassi, S. R. Mentreddy, N. Gurung, L. Karki, S. Bambo. 2016. Agroforestry research and extension education at 1890 universities and its impact in the Southeast. Agroforest. Syst. DOI 10.1007/s10457-016-9934-y.
Deidre D. Bowie, Anthony S. Kumi, Byeng R. Min, Ronald C. Smith, A. Elliott, and N. K. Gurung. 2016. Preliminary observations on effects of using different stocking rates of meat goats to control understory vegetation in longleaf pine stands. Agroforest. Syst. DOI 10.1007/S10457-016-9956-5.
Khatri, R., U. Karki, Y. Karki, N. Gurung and B. R. Min. 2016. Composition and Quality Assessment of the Woodland Browse Species and Goats Performance Study under Woodland. doi:10.2527/ssasas2015-037. Journal of Animal Science 2016 94:18-18.
Karki, U., J. Idassi, S. R. Mentreddy, N. Gurung, L. Karki, S. Bambo. 2016. Agroforestry research and extension education at 1890 universities and its impact in the Southeast. Agroforest. Syst. DOI 10.1007/s10457-016-9934-y.
Deidre D. Bowie, Anthony S. Kumi, Byeng R. Min, Ronald C. Smith, A. Elliott, and N. K. Gurung. 2016. Preliminary observations on effects of using different stocking rates of meat goats to control understory vegetation in longleaf pine stands. Agroforest. Syst. DOI 10.1007/S10457-016-9956-5.
Khatri, R., U. Karki, Y. Karki, N. Gurung and B. R. Min. 2016. Composition and Quality Assessment of the Woodland Browse Species and Goats Performance Study under Woodland. doi:10.2527/ssasas2015-037. Journal of Animal Science 2016 94:18-18.
Karki, U., J. Idassi, S. R. Mentreddy, N. Gurung, L. Karki, S. Bambo. 2016. Agroforestry research and extension education at 1890 universities and its impact in the Southeast. Agroforest. Syst. DOI 10.1007/s10457-016-9934-y.
Deidre D. Bowie, Anthony S. Kumi, Byeng R. Min, Ronald C. Smith, A. Elliott, and N. K. Gurung. 2016. Preliminary observations on effects of using different stocking rates of meat goats to control understory vegetation in longleaf pine stands. Agroforest. Syst. DOI 10.1007/S10457-016-9956-5.
Khatri, R., U. Karki, Y. Karki, N. Gurung and B. R. Min. 2016. Composition and Quality Assessment of the Woodland Browse Species and Goats Performance Study under Woodland. doi:10.2527/ssasas2015-037. Journal of Animal Science 2016 94:18-18.
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