of cassava leaf silage on growth performance and parasites
control of local and crossbred cattle fed rice straw in the dry
Authors: Seng Sokerya, Keo Sath, Kong Saroeun and Khieu Borin, 2005.
report is available at CelAgrid
An on-farm experiment was conducted in Kampong Cham and Kampong
Speu provinces during 12 weeks period, started on 25 January and
ended on 19 April 2005. Twenty one families were selected to
participate in the project, 12 in Damber village, Kampong Cham
in collaboration with the Office of Animal Health and
Production, Kampong Cham and 9 in Trakiat village, Kampong Speu
with the collaboration of Meada Khmer for Development (MKD).
Four cattle in both villages were used as the control. The
selection was based willingness to participate in the trial,
training, share information with villagers. Participating
families received cassava stems and other seedlings such as
mulberry, king grass, Leucaena, and Sesbania grandiflora,
and 10 kg of urea and plastic bags for making urea treated rice
straw. In kampong Cham, they did not receive cassava stem as
they had access to the leaves from their own plantation.
Technique to ensile cassava leaves and to improve rice straw
were demonstrated in the training.
cattle (1-3 years old), 9 males and 1 female were used for the
trial in Kampong Cham while in Kampong Speu, 9 crossbred cattle,
3 males and 6 females were used. Farmers practiced their
traditional feeding but with the supplementation 200g of protein
from cassava leaf silage per 100kg of live weight per days. The
supplement was given in afternoon after returning from grassing.
Feed offer and refuse were collected and kept in the ice box
prior for chemical analysis at CelAgrid. Samples of feed
supplement were analysed for pH and HCN. Cattle were weighed and
faeces were taken after weighing for nematode parasite egg count
in every two weeks. Faecal samples were taken directly from the
rectum. A mixture of two grams faecal sample and 30 ml of salt
solution were filtered through a tea strainer and then examined
under 10X microscopic magnification. All the egg count in both
compartment of Mc Master chambers were added and multiplied by
50 to calculate an approximation of number of egg per gram of
Supplementation of 200g/day per 100kg live weight of cassava
silage after grazing increased the live weight of cattle in both
Kampong Cham and Kampong Speu provinces, while the cattle
without supplementation lost 156 g/day/cattle. Live weight gain
of crossbred (145 g/day/cattle) was higher than local cattle
(93.3 g/day/cattle). Number of parasite egg count was reduced in
both locations. The reduction was higher with local breed (195
eggs to 35.0 eggs) compared with crossbred (171 eggs to 92.0
eggs) during 12 weeks of experiment. It was concluded that the
supplementation of cassava leaf silage in dry season is
appropriate to improve the live weight gain of cattle and reduce
nematode parasite eggs.