نتایج جستجو برای: feed efficiency

تعداد نتایج: 445891  

Efficiency is one of the most important factors in productivity growth, especially in agriculture. The purpose of this study was to measure the technical, allocation and economic efficiency and to identify the factors affecting them in dairy cattle stations of Moghan agro-industry company.The data of this research are related to the year 2017, which gathered its statistics and information by do...

2002
Gary L. Cromwell

Copper is a unique mineral, When it is added to pig diets at a high level (much higher than the nutritional requirement), copper stimulates growth and feed efficiency much like antibiotics do. This effect is particularly evident with young pigs. Table 1 shows results of UK studies over a 1 &year period in which high copper diets were fed to weanling pigs (from 17 to 40 lb). Copper increased gro...

Journal: :Journal of animal science 2010
E L Sherman J D Nkrumah S S Moore

Feed intake and efficiency are economically important traits because feed is the greatest variable cost in beef production. Feed efficiency can be measured as residual feed intake (RFI), which is the difference between actual DMI of an animal and the expected DMI based on its BW and growth rate. Feed conversion ratio (FCR) is the inverse of gross feed efficiency and is the ratio of DMI to ADG. ...

2002
D. G. Fox L. O. Tedeschi P. J. Guiroy

The beef industry in the United States is developing programs to minimize excess fat produced, increase consistency of product and to identify and reward individual owners for superior performance in the feedlot. In the U.S., Strategic Alliances between cow-calf, feedlot and packer segments of the industry are being developed to accomplish this goal. Integrated production and marketing systems ...

Journal: :Journal of animal science 2006
Z Wang J D Nkrumah C Li J A Basarab L A Goonewardene E K Okine D H Crews S S Moore

This study was conducted to determine the optimum test duration and the effect of missing data on accuracy of measuring feed efficiency and its 4 related traits ADG, DMI, feed conversion ratio, and residual feed intake in beef cattle using data from 456 steers with 5,397 weekly averaged feed intakes and BW repeated measurements taken over 91 d. Data were collected using the GrowSafe System at t...

2002
C. W. Hastad M. D. Tokach J. L. Nelssen R. D. Goodband S. S. Dritz

Two hundred eighty nursery pigs (initially 30.9 lb) were used in a 21-d growth assay to determine the energy value of ground corn germ relative to corn oil in nursery diets. Increasing dietary corn oil linearly decreased average daily feed intake and improved feed efficiency. However, pigs fed diets containing ground corn germ meal had similar gain and feed efficiency as those fed the corn-soyb...

1999
P. D. Muir N. B. Smith D. G. McCall

Compensatory growth is an integral part ofNew Zealand beef production systems (Nicol and Kitessa, 1997) with restricted winter nutrition followed by good spring and summer feeding enabling a better fit with seasonal pasture production. Purchasers of store cattle (including feedlotters) often prefer animals with a previous history of perturbed growth because they believe they can benefit from hi...

2015
Guoqiang Yi Jingwei Yuan Huijuan Bi Wei Yan Ning Yang Lujiang Qu Vinod Scaria

Since the feed cost is a major determinant of profitability in poultry industry, how to improve feed efficiency through genetic selection is an intriguing subject for breeders and producers. As a more suitable indicator assessing feed efficiency, residual feed intake (RFI) is defined as the difference between observed and expected feed intake based on maintenance and growth. However, the geneti...

Background and Objectives: Red beet juice, a potential source of valuable nutrients, is widely used as a colorant in food industries. In recent years, to avoid reduction of nutritional values of the red beet during concentration by thermal processing, an osmotic distillation (OD) technique has been suggested. Therefore, the major aim of the present study was to investigate effects of the flow r...

2015
Garland R. Dahlke Patrick J. Gunn

and Implications Estrus activity in virgin heifers tends to affect the outcome in measurements observed during performance and feed utilization tests. Prior to any testing it is prudent to identify those females that have shown estrus activity consistently and those which have not, then evaluate animals for feed efficiency grouped by stage of sexual maturity. Introduction Feed efficiency measur...

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