-2-


 5. Treatment V same forage mixture, acreage, ammonium nitrate, and number
 of calves (supplemented with a 12% crude protein high-energy ration at
 at the level of 1% of bodyweight) as 2 above.

 6. Treatment VI same forage mixture, acreage, ammonium nitrate, and number
 of calves (supplemented with corn silage fed ad libitum) as 2 above.

 The triticale was planted in rows 7 inches apart with a grain drill at the
rate of 121 lb./acre. The ryegrass and crimson clover were seeded over the triticale
with a cultipacker-seeder at the rates of 10 and 8 lb./acre, respectively. The
first and second rotational pastures for each treatment were planted on October
30, 1973; while the third and fourth rotational pastures for each treatment were
planted on November 7, 1973. A complete fertilizer (8-24-24) was applied at
planting time on all pastures at the rate of 250 lb./acre. The ammonium nitrate
and sulfur-coated urea were applied as stated previously.

 The corn silage was made from Pioneer variety "3369A" hybrid corn, which
yielded 13.5 tons per acre of 33% dry matter forage. On a dry matter basis, 48%
of the corn silage was grain.

 The trial was initiated on December 18, 1973, and terminated when the forage
was completely grazed out (May 28, 1974). After an overnight shrink (fast from
feed and water), individual animal weights were taken at the beginning and at the
end of the trial period. Additional test animals were added to and removed from
the pasture groups as needed to keep the forage uniformly grazed. In all cases,
individual animal weights were taken after an overnight shrink. Each experimental
group of calves was rotated between the four pasture plots assigned to it as
required for best utilization of good quality forage.

 The supplemental ration fed on pasture to two groups was given once daily at
the level of 1% of body weight. The feed allowances for the groups for the next 28
days were determined on the basis of the previous 28-day weights. The corn silage,
which was fed to two groups on pasture, was fed ad libitum. The calves fed in
drylot on the corn silage and concentrate supplement ration were fed once daily
in an amount of feed that they would clean-up between feedings. Feed data were
recorded daily.

 A mineral mixture (consisting of two parts defluorinated rock phosphate and
one part trace-mineralized salt), plain salt, and clean drinking water were
available to the animals at all times.

 The composition and cost of the concentrate supplement and the pasture
supplement ration are presented in Table 1. The proximate analyses of the corn
silage, concentrate supplement, and the pasture supplemental ration are listed in
Table 2.

 The performance data of growing beef calves receiving six different cool-
season feeding regimes are listed in Table 3. The over-all performance on all
treatments was considered to be better than average. Beef calves on Treatment V
had the largest daily gain (2.10 lb./head), followed in order by the daily gain
(1.89 lb./head) of beef calves on Treatment II, the daily gain (1.82 lb./head) of
beef calves on Treatment III, the daily gain (1.81 lb./head) of beef calves on
Treatment IV, the daily gain (1.73 lb./head) of beef calves on Treatment VI, and
the daily gain (1.73 lb./head) of beef calves on Treatment I. Beef calves
supplemented with a 12% crude protein high-energy ration on pasture at the level
of 1% of body weight (Treatment V) gained significantly (P<0.01) faster than
calves which received all other feeding regimes except the unsupplemented calves on