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The importance of some Sahelian browse species as feed for goats

Sanon, Hadja Oumou (2007). The importance of some Sahelian browse species as feed for goats. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2007:84
ISBN 978-91-576-7383-1
[Doctoral thesis]

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Browse species contribute substantially to the availability of feed for livestock in the Sahelian zone of Burkina Faso. This study aimed to identify the most appreciated and utilized browse species, to evaluate their potential for fodder production and nutritive value, and to test the possibility of using them in intensive animal production. In the first experiment the behaviour of cattle, sheep and goats was studied and a survey was undertaken in the study area to estimate the indigenous knowledge of browse species and their utilisation by ruminants. In the second experiment, Acacia senegal, Guiera senegalensis and Pterocarpus lucens, species that were found to be well utilized, were studied by estimating the phenological variation over time and the edible biomass production, total and directly accessible to sheep (0.87 m), goats (1.65 m) or cattle (1.47 m). Biomass production was also estimated using dendrometric parameters. The chemical composition of biomass (leaves and green pods) was determined in the third experiment, followed by measurement of the voluntary intake and apparent digestibility of the leaves and pods (except for G. senegalensis) using goats. Their effect (except for A. senegal leaves) on growth, carcass characteristics and parasite resistance was evaluated in the fourth experiment, feeding the browses ad libitum with a fixed amount of bran and hay and compared with a control diet containing cottonseed cake. The farmers classified the browse species according to their availability, their nutritive value, and several other usages. The feeding activities of all animal species decreased from rainy to dry season, with the decline in fodder availability, while resting and ruminating activities were increasing at the same time. Cattle browsed (leaves and litter) during the whole the study period for around 5% of the time spent on pasture. Sheep and goats made a shift in their feeding activities from grazing to browsing (28% and 52% of the time spent on pasture, respectively, for sheep and goats) when the herbaceous biomass decreased. A. senegal, G. senegalensis and P. lucens started the foliation phase as soon as the rains started, while A. senegal lost leaves earlier. The proportion of accessible biomass was higher for G. senegalensis, but P. lucens had higher total edible biomass. Goats browsing at higher height had more edible biomass at their disposal than cattle and sheep, although the chemical composition was similar for biomass accessible by all three animal species. The crown diameter predicted well the total edible biomass production of the three browse species. The crude protein (CP) content was 114, 157 and 217 g/kg dry matter (DM) and the neutral detergent fibre content 604, 534 and 412 g/kg DM for G. senegalensis, P. lucens and A. senegal, respectively. The highest intake was of the P. lucens leaves diet (864 g) and the lowest of the G. senegalensis diet (397 g). Pods from A. senegal were more consumed than pods of P. lucens. The leaves of A. senegal and P. lucens had similar digestibilities of CP, while A. senegal pods had higher digestibility of all nutrients than P. lucens pods. Goats fed A. senegal pods showed higher growth rate (56 g/day) and the goats on P. lucens pods had the lowest (24 g/day). The carcass weight, dressing percentage and weight of the primal cuts were higher for goats fed A. senegal pods, P. lucens leaves and the control diet. In conclusion, A. senegal pods and P. lucens leaves can be recommended as supplemental feed to poor quality roughages.

Authors/Creators:Sanon, Hadja Oumou
Title:The importance of some Sahelian browse species as feed for goats
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :September 2007
Number of Pages:69
ALLI. Sanon H.O., Zoungrana-Kaboré C., Ledin I., 2007. Behaviour of goats, sheep and cattle and their selection of browse species on natural pasture in a Sahelian area. Small Ruminant Research 67, 64-74. II. Sanon H.O., Zoungrana-Kaboré C., Ledin I., 2007. Edible biomass production from some important browse species in the Sahelian zone of West Africa. Journal of Arid Environments (in press). III. Sanon H.O., Zoungrana-Kaboré C., Ledin I., 2007. Nutritive value and voluntary feed intake by goats of three browse fodder species in the Sahelian zone of West Africa. (Submitted). IV. Sanon H.O., Zoungrana-Kaboré C., Ledin I., 2007. Growth and carcass characteristics of male Sahelian goats fed leaves or pods of Pterocarpus lucens and Acacia senegal. (Submitted)
Place of Publication:Uppsala
ISBN for printed version:978-91-576-7383-1
Publication Type:Doctoral thesis
Full Text Status:Public
Agrovoc terms:goats, sheep, cattle, carcasses, digestibility, feed intake, feeding habits, growth rate, phenology, burkina faso
Keywords:Acacia senegal, browse species, carcass characteristics, cattle, chemical composition, digestibility, edible biomass production, feed intake, feeding behaviour, goats, growth rate, Guiera senegalensis, indigenous knowledge, phenology, Pterocarpus lucens, sheep.
Permanent URL:
ID Code:1531
Department:(VH) > Dept. of Animal Nutrition and Management
Deposited By: Hadja Oumou SANON
Deposited On:10 Sep 2007 00:00
Metadata Last Modified:02 Dec 2014 10:12

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