Tucumcari Bull Test, 56-day report, 1963

              Bull Sesslon
A Repor t Fnom the Tucumcor i Bull Testing Station
COOPERATIVE EXTENSION SERVICE NEW MEXICO STATE UNIVERSITY
U.S. Dept. of AgricultuFe
T Bobby J. Ronkin
XJ - AA s--isrlrirsrrrtl o n t AArnrir ; imol Husbondmon
af,.
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December 20, L963
56-DAY REPORT
In spite of extene{ve Eicknees late ln the last welgh perlod, the bulle are
rnaintainlng a good record of growth. The senior average after 56 days on test
ls 2.86 pounds per day, and the Junior test average le 2.69 pounds per day. With
the growlng ratlon belng fed, lre expect galna'around 2.6 to 2.7 pounds per day
for the entlre 140-day perlod.
MoBt of the bulle were elck durlng the flrst week of December due to s@e
klnd of resplratory lnfectlon with such syurptons as coughlng, runny noaea, fever
and loes of appetl.te. Flnally, all bulle lrere trested wlth antiblotlcs on tlro
or three consecutlve days and recovery was falrly rapld. ltrere rrere, however, a
f,ew buLls that had not recovered gufflclently by welghlng day. (December 16) to
shott a good galn. If lt appeara thet any of the bulle have been eeverely eet-back
by thle or any other gickneee, they wlll be removed frm the test.
I^IIIY T'MASUNE GAIN?
I{hat ls the value of knowlng honr fast a bull w111 grow? A etudy of thls wae
made by the Agrlcultural Experlnent Statlon at Texae A & U Unlverslty. Ttrree yearllng Hereford bulls ltere selected each year frm the bull performance tegt at the Balnorhea etatl.on" Bullg were plcked for hlgh, medium, and lor.r rste of
galn on test. They were bred to groups of high grade Hereford cowg and weanlng
welghter ageo, and feedlot data were taken on the offeprfng. The ltudy covered flve yeare and included 14 performance teeted el.res and !47 offsprlng.
lhe followlng table ghowe the s-year svereges of the elre-galn groupg.
Welghte and gaine of the offsprlng frm each eLre aEe baeed on the average of
both eteere and helfere ln that slre grorp and are not adJusted for dlfferences
Ln nrrnber of each eex.
Table L. Average performance of offsprlng fron hlgh, medLtrn,
and low sl.res selected on rate of galn. (Texas Agrlcultural
Experlment Statlon)
Sirer Olfspring
Grour p llbt*e- r Gatien rol n Nua- bcr
Finsl Weight ifri, t'"iT
Poundr
t.9:e
l-92
1.74
Gain
on
teet
759.9
722.0
703.5
fl
l7
5g
Adlurted
wesnilg
woight
f,diurted
tlil0-dcy
weight
- - -- - - _
High
Medinm
lpw
I
5
5
3.03
2.52
l,g9
197.7
130.3
ll7.g
755.6
715.0
69e3
l.8l
1.72
l.6g