Home About Browse Search

Performance analysis of draught animal-implement system to improve productivity and welfare

Bobobee, Emmanuel Y. H. (2007). Performance analysis of draught animal-implement system to improve productivity and welfare. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2007:70
ISBN 978-91-576-7369-5
[Doctoral thesis]

[img] PDF


Draught animal technology is a reliable and popular farm power resource in most developing countries. However, despite its growing popularity, animal traction farmers face several constraints such as rapid ploughshare wear, high draught forces and poor design of harnesses and other implements. Also, farmers and researchers have placed little emphasis on the importance of draught animal welfare issues. The main objective of the thesis was to study the performance of draught animal-implement system to improve productivity and welfare. The specific objectives were to: (i) develop and test cast steel ploughshares for abrasive wear rate and perform comparative analysis; (ii) investigate optimum cutting edge thicknesses in relation to draught force and heart rates of work animals; (iii) analyse the effects of yoke design and loading transport implements on the productivity, comfort and welfare of oxen and camels; (iv) investigate the maximum loads that a camel can pull with carts and sledges without compromising its welfare. The methodologies adopted were laboratory investigations into ploughshare chemical composition, hardness and production methods, cast steel share development, and field-testing of shares, yokes and transport implements. The following conclusions were drawn from the study: (i) The newly developed cast steel shares were equally durable as the imported versions, and more durable than the local blacksmith forged shares (ii) The 2-4 mm share thicknesses emerged as the optimum share cutting edges that developed the least resistant forces and minimum stresses (lowest heart rates) when pulled by the animals. (iii) The yoke designs, which have increased contact areas in the animal's neck regions were more comfortable than the traditional yokes that have small contact points on the animals. (iv) At nearly constant walking speeds, the maximum loads camels pulled with cart and sledge were 5620 N and 2490 N, which were 119-143% of their body weights and equivalent to 53-64% pull/live weight ratios. The average pull/live weight ratios for the three camels ranged from 29-51% and 15-30% for cart and sledge, respectively, making the camels to perform nearly twice transport work in pulling loaded carts compared with pulling loaded sledges The concept of performance index is introduced to evaluate draught animal power performance.

Authors/Creators:Bobobee, Emmanuel Y. H.
Title:Performance analysis of draught animal-implement system to improve productivity and welfare
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2007
Number of Pages:57
ALLI. Emmanuel Y.H. Bobobee, Kofi Sraku-Lartey, Simon C. Fialor, Emmanuel A. Canacoo, Sampson K. Agodzo, Albert Yawson, Girma Gebresenbet (2007). Wear rate of animal-drawn ploughshares in selected Ghanaian soils. Soil & Tillage Research 93, 299–308. II. Emmanuel Y.H. Bobobee and Girma Gebresenbet (2007). Effect of cutting edge thickness and state of wear of ploughshare on draught force and heart rates of Sanga oxen in Ghana, Soil & Tillage Research 95, 298-307. III. Emmanuel Y. H. Bobobee and Girma Gebresenbet. The Impact of Yoke Design on Physiological and Behavioural Responses of Draught Animals: The Case of Sanga oxen in Ghana. Presented at 5th International Colloquium on Working Equines (ICOWE 2006), Nov. 2006. Addis Ababa. Ethiopia, and submitted to Biosystems Engineering. IV. Girma Gebresenbet; Emmanuel Y. H. Bobobee; Pascal Kaumbutho; P S. Simpkin. Work performance, physiological and behavioural responses of camels when pulling carts and sledges. (Manuscript).
Place of Publication:Uppsala
ISBN for printed version:978-91-576-7369-5
Publication Type:Doctoral thesis
Full Text Status:Public
Agrovoc terms:bullocks, camels, draught animals, animal power, draught animal cultivation, harness, ploughshares, wear, farm equipment, performance testing, heart rate, animal welfare, ghana, developing countries
Keywords:draught animal technology, ploughshare, wear, cutting edge, draught force, heart rate, oxen, camel, yoke, animal welfare
Permanent URL:
ID Code:1601
Department:(NL, NJ) > Department of Biometry and Engineering
Deposited By: Emmanuel Bobobee
Deposited On:17 Oct 2007 00:00
Metadata Last Modified:02 Dec 2014 10:13

Repository Staff Only: item control page


Downloads per year (since September 2012)

View more statistics