نتایج جستجو برای: grazing behavior
تعداد نتایج: 633539 فیلتر نتایج به سال:
Forum Effects of Grazing Pressure on Efficiency of Grazing on North American Great Plains Rangelands
Comparisons of stocking rates across sites can be facilitated by calculating grazing pressure. We used peak standing crop and stocking rates from six studies in the North American Great Plains (Cheyenne, Wyoming; Cottonwood, South Dakota; Hays, Kansas; Nunn, Colorado; Streeter, North Dakota; and Woodward, Oklahoma) to calculate a grazing pressure index and develop relationships for harvest effi...
water quality is a serious issue in tropical grasslands that must be addressed to ensure the continuity and sustainability of water resources. this study aimed to assess the stream water quality of tropical grassland under long-term moderate (2.7 animal unit ha-1 y-1 for 34 years) and short-term heavy (5 animal unit ha-1 y-1 for 2 years) grazing systems at catchment and farm scales in kuala lum...
Access to shade decreases heat stress of grazing dairy cows, but may reduce their time. It was hypothesized that access would alter behavior New Zealand Holstein cows. The objective evaluate the distribution time use cows with and without in a temperate sub-humid climate summer rainfall, where mean annual temperature varies between 12 (January) 18 °C (May). During warm (May) cool (October) seas...
ABSTRACT: The animal performance on pasture is directly correlated to canopy structure since this influences the herbage consumption. This study was evaluated effects of four pre-grazing heights (12, 20, 28 and 36 cm) Andropogon lateralis Ness intake feeding behavior steers in a natural grassland under intermittent stocking management, using same proportion defoliation (40% reduction height, i....
Despite our growing knowledge on plants' functional responses to grazing, there is no consensus if an optimum level of functional aggregation exists for detecting grazing effects in drylands. With a comparative approach we searched for plant functional types (PFTs) with a consistent response to grazing across two areas differing in climatic aridity, situated in South Africa's grassland and sava...
Circulating microRNAs (c-miRNAs) are associated with physiological adaptation to acute and chronic aerobic exercise in humans. To investigate the potential effect of grazing movement on miRNA circulation in cattle, here we profiled miRNA expression in centrifugally prepared exosomes from the plasma of both grazing and housed Japanese Shorthorn cattle. Microarray analysis of the c-miRNAs resulte...
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