Dehydrated poultry manure as protein supplement for finishing dairy steers
1990
Yanin Opatpatanakit | Wibulsak Kawila (King Mongkut's Inst. of Technology Chaokuntaharn Ladkrabang, Bangkok (Thailand). Faculty of Agricultural Technology)
This experiment was conducted to study the effects of dehydrated poultry manure (DPM) as protein supplement on the performance and the feed cost of finishing dairy steers. The male dairy steers with initial age of 18 months and average weight of 331.8 kg were alloted into a completely randomized design to receive three different levels of DPM in diets (0, 20 and 30 %) for a 173-day of the experimental period. Fresh paragrass and water were fed on an ad libitum basis. Growth rate, feed intake and feed efficiency were not statistically different (p=0.05) among steers fed the different diets. However, there was a tendency that the cost of feed per kg of weight gain of male receiving 36 % of DPM was the lowest. In addition, steers fed DPM had significantly lower in the feed cost than the control group (p0.05). Hence, DPM can be used up to 30 % in finishing diet with no effect on perfomance but it helps to decrease the cost of feed.
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Эту запись предоставил Kasetsart University