منابع مشابه
Energy Evaluation of Feeds for Pigs: Consequences on Diet Formulation and Environment Protection1
The cost of feed is the most important cost in pig meat production (about 60%), and the energy component represents the greatest proportion. Therefore, it is important to estimate precisely the energy value of feeds, either for least-cost formulation purposes or for adapting feed supply to energy requirements of animals. Evaluation of energy content of pig feeds is usually based on their digest...
متن کاملThe Role of Fiber in Ruminant Ration Formulation
Several livestock species have the ability to digest fiber via microbial fermentation and to obtain useful energy from this process. However, in ruminants, fermentation of fiber occurs prior to the small intestine (Figure 1). Thus, microbial protein that is produced, as fiber is being digested, is available for digestion to amino acids with subsequent absorption for use by the animal. Although ...
متن کاملEconomic Evaluation of Dairy Feeds
Feed costs typically represent more than 50% of total costs of producing milk on a dairy farm. Feed cost savings, even a few dollars per ton, add up to significant savings over a year on a large dairy. For many dairies, a ration-balancing software program that uses linear programming techniques can be used to determine the opportunity cost or price of including a new feed in a ration. However, ...
متن کاملFormulation of Least-Cost Dairy Ration for Small-Scale Dairy Farms Using ‘Solver Add-Ins’ in Microsoft Excel
Small-scale dairy farming in Bangladesh is constrained mostly due to acute shortage, high price and seasonal fluctuation of energy and protein supplements. Poor economic conditions of dairy farmers do not allow them to purchase adequate conventional energy and protein supplements. Locally available non-conventional energy and protein sources can be used as alternatives, cheaper than conventiona...
متن کاملIn vitro techniques for the evaluation of ruminant feeds.
For the purposes of this symposium in vitro techniques for the evaluation of ruminant feeds are defined as laboratory methods in which the availability of nutrients in the feed to the digestive process in the ruminant animal is estimated by the incubation of the feed with micrwrganisms or semi-purified enzyme preparations, or both. Ewart (1974) reviewed for the Society recent developments in co...
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ژورنال
عنوان ژورنال: Proceedings of the Nutrition Society
سال: 1988
ISSN: 0029-6651,1475-2719
DOI: 10.1079/pns19880023