Effectiveness of selection for gains in body weight in beef cattle
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Effectiveness of selection for gains in body weight in beef cattle

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Published .
Written in English

Subjects:

  • Beef cattle.,
  • Cattle -- Feeding and feeds.

Book details:

Edition Notes

Statementby Glen Henry Hitchcock.
The Physical Object
Pagination40 leaves, bound ;
Number of Pages40
ID Numbers
Open LibraryOL14311251M

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Reducing the period of data collection for intake and gain to improve response to selection for feed efficiency in beef cattle J Anim Sci. Apr 3;96(3) doi: /jas/skxCited by: 7. • Gross feed efficiency: ratio of live -weight gain to dry matter intake (DMI) – – (higher number better) • Feed conversion ratio (FCR): DMI to gain ratio – – (lower number better) • FCR is a gross efficiency measurement – DOES NOT attempt to partition feed inputs into portions needed to support maintenance and. weight gain saved by weight loss aEmpty body weight is the live weight less the contents of the digestive tract. bValues in parentheses are percentages. Table 2. Best estimates of various values for the Texas system of body condition scoringa. Carcass Weight to Body % Fat fat Mcal/lb. Wt./Ht. Ratio change score Caloric value/File Size: 1MB. Phase C test body weight (approx. days of age) of bulls mature body weight of cows at weaning of their calves. Sexual dimorphism values then varied from to , a difference of %. Breed productive efficiency was significantly influenced by breed sexual dimorphism. It is interesting that the dual-purpose breeds, viz. the Simmentaler.

Introduction to Beef Production 2 Beef Facts Birth Weight - 60 to pounds Body temperature - °F (average) Feed to gain ratio - to Weaning weight - to pounds Slaughter weight - 1, to 1, pounds The History of Beef Cattle in the United States Beef cattle are not native to the United States. Christopher. Cattle on full feed usually gain faster and require less feed energy for a pound of gain when they consume high-energy rations. This is due to a larger daily energy intake on this type of ration, which results in a larger percentage of the daily energy being left for gain after body . Breed selection can be a source of debate. Some breeds have characteristics better suited to certain feed conditions or particular environments than have others. No one breed is the best for all environments and all markets. There are over 50 breeds of cattle available for selection in Australia. Beef Cattle Breeds and Biological Types Scott P. Greiner, Extension Animal Scientist, Virginia Tech Worldwide there are more than breeds of beef cat-tle. Over 60 of these breeds are present in the United States. However, a relatively small number of breeds .

Calving difficulty (dystocia) can increase calf losses, cow mortality, and veterinary and labor costs, as well as delay return to estrus and lower conception rates. In two studies at the U.S. Meat Animal Research Center (MARC), Clay Center, Nebraska, calf losses within 24 hours of birth averaged 4 percent for those born with little or no assistance compared with 16 percent for those requiring. Average daily weight gain to pounds Total weight gain to pounds Final show weight (March) to 1, pounds A range of possibilities exists. However, pounds may be too light to make the minimum weight limits at some shows, and many judges may consider 1, pounds to be too heavy to be competitive. Some cattle will need to. Effects of Bod y Condition on Productivit y in Beef Cattle Pa g e 2March Figure 1 Bod y condition score can be evaluated visuall y b y determinin g fat cover in the areas shown (Oklahoma State Universit y).cows with higher BCS tend to have higher weights, the body weight alone is not a good estimate of body .   Effective sire selection is a daunting process for many seedstock and commercial beef producers. Indeed, more than one or two traits affect profit in beef cattle enterprises. A vast array of EPD makes selection challenging and depending on breeding system and marketing methods, traits have different economic values (contributions to profit.