نتایج جستجو برای: loss of forage

تعداد نتایج: 21188979  

Journal: :علوم گیاهان زراعی ایران 0
محمد دشتکی کارشناس ارشد پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمدرضا چایی چی دانشیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران

to evaluate the quantitative and qualitative of forage in intercropping of sorghum and chickling pea under limited irrigation systems, an experiment was conducted in research farm, college of agriculture, university of tehran, during 2009 and 2010. the treatments were arranged as split plots consisted of three levels of irrigation regimes including control (irrigation after 70mm evaporation fro...

2013
Dwayne R. Buxton

Forage age and maturity generally have a larger influence on forage quality than environmental factors. Plant environment, however, cause deviations in forage quality even when harvested at the same maturity. Temperature usually has greater influence on forage quality than other environmental factors. Although increasing temperature normally hastens maturity, the primary effect may be through i...

Journal: :علوم گیاهان زراعی ایران 0
محیا انصاری جوینی دانشجوی کارشناسی ارشد پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمدرضا چایی چی دانشیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران رضا کشاورز افشار دانشجوی دکتری، پردیس کشاورزی و منابع طبیعی دانشگاه تهران سید محمدرضا احتشامی استادیار دانشگاه گیلان

to evaluate the effect of different application methods of different strains of pgpr on sorghum forage production, a field experiment was conducted in research farm of college of agriculture of university of tehran in karaj during 2009. the treatments were arranged factorially and the data was analyzed based on a complete block design with three replications. the treatments comprised of three p...

2004
R. D. Shaver

Forages comprise 35% to 70% of the dry matter (DM) in diets for lactating dairy cows. Variation in forage quality can impact DM intake, diet energy density, dietary grain and protein supplementation amounts, feed costs, lactation performance, and cow health. Forage quality is highly variable among and within forage types (NRC, 2001). Forage species, variety or hybrid, stage of maturity at harve...

2014
K. J. Han W. D. Pitman A. Chapple

Preservation of forage crops as silage offers opportunity to avoid the high risk of rain-damaged hay in the humid south-central USA. Recent developments with baled silage or baleage make silage a less expensive option than typical chopped silage. Silage has been important in the region primarily for dairy production, but baleage has become an option for the more extensive beef cattle industry i...

Erfan Rostami, Hamidreza Mehrabe Mehdi Farahpour

Abstract. Rangelands are mainly used for grazing the livestock in Iran, it is essential to specify grazing suitability of rangelands in each region of country, so that it may improve the management policies and approaches for planning and designing current and future plans. The aim of this research was to determine the rangeland suitability for sheep grazing in the watershed of Sadegh Abad, Ker...

Journal: :Acta Veterinaria Scandinavica 2006
KB Gudmundsdóttir S Sigurdarson J Kristinsson T Eiríksson T Jóhannesson

This study was undertaken in order to examine whether any connection existed between the amounts of iron in forage and the sporadic occurrence of scrapie observed in certain parts of Iceland. As iron and manganese are considered antagonistic in plants, calculation of the Fe/Mn ratios was also included by using results from Mn determination earlier performed in the same samples. Forage samples (...

2007
Erin E. McDonell

Forage crops are the staple ingredients of dietary rations fed to ruminant animals. They provide the animal with a large source of dietary fiber, critical for normal functioning of the rumen and its associated microenvironment (Driehuis and Oude Elferink, 2000). The preservation of forage crops into a fermented feedstuff known as silage has been an important practice in agriculture, especially ...

Journal: :The Journal of animal ecology 2008
Juliet L Osborne Andrew P Martin Norman L Carreck Jennifer L Swain Mairi E Knight Dave Goulson Roddy J Hale Roy A Sanderson

1. Foraging range is a key aspect of the ecology of 'central place foragers'. Estimating how far bees fly under different circumstances is essential for predicting colony success, and for estimating bee-mediated gene flow between plant populations. It is likely to be strongly influenced by forage distribution, something that is hard to quantify in all but the simplest landscapes; and theories o...

1997
PERRY W. CLARK LOUIS E. ARMENTANO

Sixteen Holstein cows in midlactation were used in a 4 × 4 Latin square design to determine the effect of replacing alfalfa neutral detergent fiber (NDF), with NDF from a combination of whole linted cottonseed, dried distillers grains, and wheat middlings. The four diets were a basal control diet that was low in forage and fiber [(5.9 g of corn silage NDF and 6.1 g of alfalfa NDF/100 g of dry m...

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