منابع مشابه
Estimation of the Carbon Footprint in Dairy Sheep Farm
By 2050, the earth’s population is expected to be more than 9 billion. The need for secure food and water supply will force agriculture to increase production. The major greenhouse gases (GHGs) from the livestock sector are carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) throughout the production process. These gases are the key contributor to an in...
متن کاملAn outbreak of Chorioptes bovis mange on a dairy farm in Tabriz, Iran
This report is on infestation with Chorioptes bovis of Holstein cattle on a dairy farm included 900 cowsin Tabriz. Ten heifers and 25 milking cows under the age of 5 years were infested. Clinical signs consisted ofalopecia, crusts, ulcerations and superficial skin fissures. Pruritus and itching were severe in all cases.Lesions were present around the base of the tail, on the neck and below the ...
متن کاملthe effect of e-64 on the developmental competence of sheep cocs during in vitro maturation
in the present study, the effect of e-64 at different concentrations (0.5, 1, 5 and 10 µm) added to (1) the ivm medium on oocyte nuclear maturation and developmental competence of ovine oocytes, and (2) to the ivc medium on embryonic development of ovine embryos were investigated.
Whole-farm Phosphorus Management on Dairy Farms
Most dairy farms in Wisconsin continue to follow a fairly generalized formula of how to produce milk. Cows and replacement heifers are fed primarily homegrown feed from crop rotations comprising alfalfa (Medicago sativa L.), corn (Zea mays L.), oats (Avena spp.) and soybean (Glycine max L. Merr.). Protein and mineral supplements are purchased to compliment dairy diets. However, the dairy indust...
متن کاملDairy farm cost efficiency.
A stochastic cost equation was estimated for US dairy farms using national data from the production year 2000 to determine how farmers might reduce their cost of production. Cost of producing a unit of milk was estimated into separate frontier (efficient) and inefficiency components, with both components estimated as a function of management and causation variables. Variables were entered as im...
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ژورنال
عنوان ژورنال: Proceedings of the New Zealand Grassland Association
سال: 1989
ISSN: 1179-4577,0369-3902
DOI: 10.33584/jnzg.1989.50.1856