Comparison of Holstein, Charbray, and Zebu Bulls for beef production under rotational grazing I. Grazing performance and economic evaluation
نویسندگان
چکیده
منابع مشابه
Grazing lucerne as fattening management for young bulls: technical and economic performance and diet authentication.
Three fattening systems were evaluated from weaning to slaughter in order to find alternatives to grain feeding in young bulls, and to test the reliability of carcass subcutaneous fat colour to discriminate among them. After weaning (224 kg), one group of animals was fed concentrates and straw until they reached the target slaughter weight (450 kg; Feedlot), another group grazed rotationally on...
متن کاملAlternative Rotational Grazing Systems at the Beef Teaching Farm
Fifty-six acres of central Iowa corn land were seeded to bromegrass and divided with high-tensile wire into eight seven-acre plots. This bromegrass was fertilized with 70 pounds of nitrogen each spring and fall, 1987-1990. In 1991 – 1995, the nitrogen was increased to 80 pounds both spring and fall. The plots were stocked with 1.3 cow/calf pairs per acre in 1987-1991 and 1993–1995, but in 1992 ...
متن کاملOn-Ranch Grazing Strategies: Context for the Rotational Grazing Dilemma
☆ Research was funded by USDA-NIFA, Rangeland Re 2009-38415-20265); and Western Sustainable Agricultu program (Project Number SW10-073). ⁎ Correspondence: Leslie M. Roche, Department of P University of California, Davis, CA, 95616, USA. E-mail address: [email protected] (L.M. Roche). http://dx.doi.org/10.1016/j.rama.2015.03.011 1550-7424/© 2015 Society for Range Management. Publis Article his...
متن کاملSimulating rotational grazing management.
Dairy systems predominantly based on rotational grazing are notoriously hard to manage. In order to ensure profitability, this type of production requires quite good organisation, planning, and operating capability on the part of the farmer. A simulation-based decision support system, called SEPATOU, has been developed for this purpose. At the core of the decision support approach lies an expli...
متن کاملComparison of Resistance to Theileria sergenti Infection between Holstein and Japanese Black Cattle under Grazing Conditions
To analyze the resistance against Theileria sergenti infection in Holstein and Japanese Black cattle under field conditions, clinical, hematological and parasitological findings in these breeds of cattle that were grazed in the same pasture were examined during the grazing period. Holstein cattle showed a higher level of parasitemia than Japanese Black. With the progression of parasitemia, pack...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Agriculture of the University of Puerto Rico
سال: 1969
ISSN: 2308-1759,0041-994X
DOI: 10.46429/jaupr.v81i3-4.3634