The seventh edition of this classic text offers expanded material on traditional Dairy Herd Improvement (DHI) records, a new chapter on the computer as a dairy management tool, increased coverage of financial management, and thoroughly revised chapters on dairy nutrition that include the latest concepts in protein nutrition, forage evaluation, and feeding management. Like previous editions, the text focuses on showing how to use current tools and practices of successful dairy herd managers to produce and market milk and cattle more profitably.
Arnold , G. W. , Campbell , N. A. , and Galbraith , K. A. , Mathematical relationships and computer routines for a model of food ... Butterworth , M. H. and Diaz , L. , Use of equations to predict the nutritive value of tropical grasses ...
( 1990 ) exposed three cultivars of cucumber ( Cucumis sativus ) to a daily dose of 11.6 k / m biologically effective UV - B radiation in an unshaded greenhouse before and / or after inoculation with Colletotrichum laginarium ...
ENVIRONMENTAL CONTROL OF BIRDS Keith A. Arnold INTRODUCTION Problems arise between bird and human populations for three reasons : economics , health hazards , and nuisances . Bird populations are competing with humans for resources and ...
Выбор и воспитание котенка – ответственное мероприятие, ведь будущий питомец будет жить рядом с вами долгие годы. Очень важно еще ...
... 不超过1个吸收单位,则酶反应初始速度与加入的酶量呈线性关系),以每分钟OD 470 变化0.1为一个酶活单位U。每个样品重复 3次。 4超氧化物歧化酶(SOD):按郝建军等的方法测定。反应液含甲硫氨酸(1.3×10-2mol/L),氯化硝基四氮唑蓝(NBT,7.5×10-5mol/L),核黄 ...
阿根廷、巴西、乌拉圭是拉美发展“有机畜牧业”最快的国家,其中阿根廷尤为突出,1999年得到国际验证认可的有机牧场面积已超过23.1万公顷,其中20.8万公顷用于放牧。1995~1996年间,阿根廷向欧洲共同体出口了 211吨通过有机畜牧业生产的“有机肉”,其价格比普通肉 ...
translocation of fenoxaprop are not involved in the mechanism and ( 2 ) antidote interactions between these two types of grass herbicides occur at the apical meristem as proposed by Hall et al.2 REFERENCES 1.
Provides the philosophy and techniques for simulation and systems analysis of population models especially as applicable to problems in fisheries and wildlife. After introducing the basic concepts and development of...
Something is blooming every day of the year in the renowned gardens at Montrose, Nancy Goodwin's nineteenth-century property in historic Hillsborough, North Carolina. Since moving to Montrose with her husband...
Pioneers of American Landscape Design II: An Annotated Bibliography