SWEDISH UNIVERSITY OF AGRICULTURAL  SCIENCES (SLU)

 
PhD studies supported by MEKARN
 
Some animal and feed factors affecting feed intake, behaviour and performance of small ruminants
 
Van, Do Thi Thanh (2006) Some animal and feed factors affecting feed intake, behaviour and performance of small ruminants. Doctoral diss. Dept. of Animal Nutrition and Management, SLU. Acta Universitatis agriculturae Sueciae vol. 2006:32.
 
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Abstract
 
The overall objective of this thesis was to assess the effect of some animal and feed factors on feed intake, behaviour and performance of small ruminants. The experiments were carried out at the Goat and Rabbit Research Centre in Northern Vietnam.
 
The effects of two physical forms of whole sugar cane (WSC) and four different levels of WSC offered with or without concentrate on feed intake, selection and eating behaviour of weaned goat kids and lambs were studied. Both kids and lambs fed with WSC chopped in slices (1-3 cm) had higher daily dry matter intake (DMI) than those fed WSC chopped into 20 cm lengths (208 g versus 173 g/day) and eating time was reduced as chopping length of the WSC decreased. Kids had higher DMI of WSC than lambs (214 g versus 166 g/day) and spent more time eating. The DMI of lambs was highest when WSC was offered at 6% of body weight, while DMI of kids was not significantly changed as the amount of WSC offered was increased. Adding concentrate as a supplement had no effect on the DMI of WSC, only on total DMI.
 
Of the presentation methods tested hanging the foliage from the wall of the pen or tying in the trough resulted in higher intake, while chopping or stripping the leaves gave lower intakes. The highest DMI (637 g/day) was obtained with Jackfruit (JF, Artocarpus heterophyllus), a moderate DMI (247 g/day) of Flemingia (FM, Flemingia macrophylla) and lowest intake (138 g/day) with Acacia (AC, Acacia mangium). The DMI of goats fed mixtures of JF+FM or JF+FM+AC was higher than of those fed mixtures of JF+AC or FM+AC. The DMI of kids fed mixtures of JF+FM or FM+AC was higher with the hanging than with the tying method, while this was the opposite case for the mixtures of JF+AC or JF+FM+AC.
 
Adding bamboo charcoal to the diet increased dry matter (DM), organic matter (OM) and crude protein (CP) digestibility and nitrogen retention. The highest DM, OM, CP digestibility and N retention were obtained in goats fed 0.5 or 1.0 g charcoal/kg body weight /day. The goats given the diet with bamboo charcoal grew faster than those given the diet without bamboo charcoal. The highest total DMI was obtained by goats fed wilted Acacia, significantly different from fresh and dried Acacia. However, the weight gain of the goats was similar among the three processing methods of Acacia.
 
Keeping goat kids and lambs in five different group sizes of 1 to 5 animals per pen showed that the kids fed the diet consisting of JF had a higher total DMI than lambs fed the same diet, while there was no difference in total DMI between kids and lambs fed a diet consisting of a mixture of foliages from JF+AC. The feed intake linearly increased with increasing number of animals in the pens, but more aggressive behaviour was recorded in pens with higher numbers of animals. The weight gain was higher for the lambs compared to the kids, but was similar for animals in the group size of 1 or 5 animals.
 
Faculty: Faculty of Veterinary Medicine and Animal Science
Keywords:
Goats, Sheep, Saccharum officinarum, Artocarpus heterophyllus, Flemingia macrophylla, Acacia mangium, bamboo charcoal, processing methods, presentation methods, intake, behaviour, digestibility, nitrogen balance, growth.
 
Agrovoc terms:
kids, lambs, saccharum officinarum, artocarpus heterophyllus, fleminga macrophylla, acacia mangium, animal feeding, feed intake, digestibility, behaviour, weight gain, animal performance, viet nam
 
ISBN: 91-576-7081-1
Series.: Acta Universitatis agriculturae Sueciae
ISSN: 1652-6880
Volume: 2006:32
Papers/manuscripts:
I. Van, D.T.T., Ledin, I. & Mui, N.T. 2002. Feed intake and behaviour of kids and lambs fed sugar cane as the sole roughage with or without concentrate. Animal Feed Science and Technology 100 (1-2), 79-91
 
II. Van, D.T.T., Mui, N.T. & Ledin, I. 2005. Tropical foliages: Effect of presentation method and species on intake by goats Animal Feed Science and Technology 118, 1-17
 
III. Van, D.T.T., Mui, N.T. & Ledin, I. 2006. Effect of method of processing Acacia mangium and inclusion of bamboo charcoal in the diet on performance of growing goats. Animal Feed Science and Technology. (In press)
 
IV. Van, D.T.T., Mui, N.T. & Ledin, I. 2006. Effect of group size on feed intake, aggressive behaviour and growth rate in goat kids and lambs. (Submitted)
 
Number of pages: 55
Year of publication: 2006
Language: eng
ID Code: 1108
Deposited By: Do Thi Thanh Van, Van
Deposited On: 26 April 2006

MeKarn PhD Graduation

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Le Van An, Hue University of Agriculture and Fores Sweet potato leaves for growing pigs: biomass yield, digestion and nutritive value
Nguyen Thi Kim Dong: Can Tho University Studies on the utilization of agro-industrial by-products as protein sources for ducks in the Mekong Delta of Vietnam
Do Viet Minh Effect of supplementation of scavenging chickens on feed and nutrient intake, digestibility and performance of local and improved breeds in Vietnam
Khieu Borin Cassava foliage for monogastric animals; forage yield, digestion, influence on gut development and nutritive value
Duong Nguyen Khang Cassava leaf as a protein source for cattle in Vietnam
Do Thi Thanh Van Some animal and feed factors affecting feed intake, behaviour and performance of small ruminants
Vanthong Phengvichith Feeding and forage management systems for smallholder goat productionImproving feed intake of sugarcane and foliage in small ruminants: effect of processing and method of presentation of the feed
Ninh Thi Len Evaluation of high fibre feeds for growing pigs in Vietnam
Nguyen Quang Thieu Evaluation of mycotoxin contamination in Vietnam
Tran Thi Thu Hong Dietary modulation of gut microflora to improve pig health and food safety
Seng Sokerya Effects of cassava foliage on nematode infestation in goats in Cambodia
Huang Huong Giang: Probiotics for Piglets: Effects of probiotics on growth rate, digestibility, health status and features of intestinal microflora of exotic piglets post-weaning under the conditions of Northern Vietnam
Nguyen Thi Thuy Evaluation of Catfish by-product as a protein source for pigs in the Mekong Delta of Vietnam
Chu Manh Thang: Beef production based on cassava products and legume foliage in Vietnam
Nguyen Duy Quynh Tram Evaluation of locally available feed resources for small-scale freshwater fish production in Central Vietnam
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Total records: 29