SUPPLEMENTARY TRACE MINERALS FOR THE FEEDLOT FINISHING OF BEEF STEERS

1987 ◽  
Vol 67 (3) ◽  
pp. 765-774 ◽  
Author(s):  
R. J. BOILA
Keyword(s):  
Key Words ◽  
Feed Efficiency ◽  
Average Daily Gain ◽  
The Other ◽  
Carcass Weight ◽  
Trace Minerals ◽  
Beef Steers ◽  
Copper Zinc ◽  
Daily Gain

Steers in the finishing phase before slaughter were fed barley-based diets without (0TM) or with (+TM) supplemental trace minerals. The +TM diets of Trials 1 and 2 contained supplemental Cu, Zn, Mn and Se; the +TM diet of Trial 2 also contained supplemental Fe in addition to the other four trace minerals. All diets contained supplemental Co and I. Groups of steers were: Trial 1, 18 Angus-Charolais-North Devon crossbreeds, known as Selkirks (Sel) plus 18 Simmental × Sel; Trial 2, 10 Angus × Sel plus 30 Simmental × Sel. Average daily gain (ADG) was higher (P < 0.05) while feed efficiency (feed/gain; F/G) was improved 6% (P > 0.05) for +TM steers of Trial 1. There were no differences (P > 0.05) for ADG or F/G of Trial 2 when the +TM diet contained supplemental Fe. Hot carcass weight was not influenced (P > 0.05) by treatment in either Trial. In both Trials there were higher (P < 0.05) liver Cu and liver Mn for +TM steers, and no difference (P > 0.05) for liver Zn. Liver Fe was lower (P < 0.05) for +TM steers of Trial 1, but with no difference (P > 0.05) for Trial 2. Supplemental trace minerals increased ADG, but did not modify hot carcass weight in Trial 1. Liver Cu and Mn were increased in response to supplemental Cu and Mn in both Trials. It was not advantageous to provide supplemental Fe in Trial 2 in order to counteract the effect of supplemental Cu upon liver Fe observed in Trial 1. Key words: Steers, finishing phase, copper, zinc, manganese, iron

SUPPLEMENTARY COPPER FOR GROWING CATTLE CONSUMING DIETS HIGH IN MOLYBDENUM OR MOLYBDENUM PLUS SULFUR

1988 ◽  
Vol 68 (4) ◽  
pp. 1143-1154 ◽  
Author(s):  
K. M. WITTENBERG ◽  
R. J. BOILA
Keyword(s):  
Copper Oxide ◽  
Key Words ◽  
Dietary Supplement ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Average Daily Gain ◽  
Corn Silage ◽  
Beef Steers ◽  
Ceruloplasmin Activity ◽  
Daily Gain

Forty-eight Cu-depleted beef steers were used in a 105-d growing trial to compare four methods of Cu supplementation. Corn silage-barley concentrate diets were supplemented to contain 10 mg kg−1 dry matter (DM) Mo, and 1.3 (low S) or 3.7 (high S) g kg−1 total S. Copper treatments within low and high S diets were: (1) no supplemental Cu (0Cu); (2) a dietary supplement of 10 mg kg−1 DM Cu in the complete feed, added as CuSO4∙5H2O to the concentrate (CuSO4); (3) 20 g copper oxide needles (CuON) orally dosed on day 0; and (4) injectable Cu (ICu) on day 0. Although average daily gain was not different (P > 0.05) among Cu treatments, DM intake was lower (P < 0.05) with CuSO4 and CuON than with 0Cu or ICu. Feed efficiency (FE; feed:gain ratio) was better (P < 0.05) with CuSO4 (FE = 5.60) than 0Cu (FE = 6.88), while CuON (FE = 6.04) and ICu (FE = 6.16) FE were intermediate to 0Cu and CuSO4. Increasing dietary S from 1.3 to 3.7 mg kg−1 DM resulted in lower (P < 0.01) concentrations of Cu and Mo in liver and plasma, and plasma ceruloplasmin activity. An improvement of FE with CuSO4 was related to increased Cu and lower Mo concentrations in the plasma and liver of steers. With ICu there was some indication of an improvement of Cu status. With CuON, measured parameters were indicative of a metabolic Cu insufficiency, but with a lower concentration of Mo in plasma. At the levels of supplementation used in this trial, CuSO4 was a better Cu supplement than CuON or ICu for cattle consuming diets containing excess Mo or Mo plus S. Key words: Cattle, molybdenum, sulfur, copper sulfate, copper oxide needles, injectable copper

The effect of breed of terminal sire on production of beef steers

1992 ◽  
Vol 72 (4) ◽  
pp. 953-957 ◽  
Author(s):  
B. D. King ◽  
R. A. Petracek ◽  
R. D. H. Cohen ◽  
C. L. Guenther
Keyword(s):  
Birth Weight ◽  
Key Words ◽  
Average Daily Gain ◽  
Carcass Weight ◽  
Beef Steers ◽  
Production Traits ◽  
Brown Swiss ◽  
Calving Ease ◽  
Terminal Sire ◽  
Daily Gain

Charolais (C), Maine-Anjou (MA), Simmental (S) and Brown Swiss (SB) bulls were evaluated using production traits of their steer calves from birth to slaughter. Traits measured were calving ease, birth weight, preweaning average daily gain (ADG), adjusted weaning weight, ADG to slaughter; liveweight at slaughter, days on feed, carcass weight, grade fat, loin-eye area, cutability and dressing percent. For most traits the ranking was MA ≥ C ≥ S ≥ SB. Key words: Beef sire, calving ease, growth, carcass

scholarly journals 401 Effect of zinc source and ractopamine hydrochloride on the growth performance and carcass characteristics of steers fed in confinement to harvest

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 160-160
Author(s):  
John Wagner ◽  
William T Nelson ◽  
Terry Engle ◽  
Jerry Spears ◽  
Jeff Heldt ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
Feedlot Cattle ◽  
Beef Steers ◽  
Live Animal ◽  
Zinc Source ◽  
Dressing Percentage ◽  
Ractopamine Hydrochloride ◽  
Daily Gain

Abstract Four hundred and thirty-two beef steers (346.3 ± 63.7 kg BW) were used to determine the effects of Zn source on feedlot cattle fed ractopamine hydrochloride. Cattle were blocked in groups of 54 by BW and housed in 48 pens containing 9 steers per pen. Pens within a weight block were randomly assigned to treatments in a 2 x 3 factorial arrangement, with factors being: 1) 0 or 30.1 mg of ractopamine HCl/kg DM fed during the final 29 days on feed; and 2) Zn source: 90 mg of supplemental Zn/kg DM from ZnSO4; Zn sulfate (67%) + Zn methionine (33%); and Zn from Zn hydroxychloride, fed through the entire feeding period. Cattle were fed a high concentrate finishing diet for 154 d and slaughtered at a commercial abattoir. Average daily gain, DMI, feed efficiency and carcass characteristics were determined after slaughter. Zinc source had no impact on live animal performance. Cattle fed ractopamine HCl had greater (P &lt; 0.01) final BW, greater (P &lt; 0.001) ADG, improved (P &lt; 0.001) G:F, heavier (P &lt; 0.01) HCW, and larger (P &lt; 0.05) longissimus muscle compared to non-ractopamine supplemented steers. There was a Zn source by ractopamine interaction (P &lt; 0.01) for dressing percentage. Cattle receiving ractopamine HCl with Zn hydroxychloride had a greater dressing percentage (P &lt; 0.05) when compared to ractopamine HCl cattle fed other Zn sources. Cattle receiving ractopamine HCl with Zn sulfate had a lesser dressing percentage (P &lt; 0.05) when compared to ractopamine HCl cattle fed other Zn sources. Additional Zn source by ractopamine HCl interactions were not significant. These data indicate that Zn source has minimal impacts on feedlot steer performance and carcass characteristics when supplemented to cattle receiving 0.0 or 30.1 mg of ractopamine HCl/kg DM.

The effect of deworming naturally infected heifers on liveweight gain, reproductive performance and fecal egg counts

1993 ◽  
Vol 73 (2) ◽  
pp. 287-293
Author(s):  
S. L. Boyles ◽  
L. J. Johnson ◽  
W. D. Slanger ◽  
B. J. Kreft ◽  
J. D. Kirsch
Keyword(s):  
Key Words ◽  
Reproductive Performance ◽  
Fecal Sample ◽  
Average Daily Gain ◽  
Treated Group ◽  
The Other ◽  
Control Group ◽  
Age At Puberty ◽  
Daily Gain

Twenty-six of 52 heifers with an average liveweight of 318 kg were dewormed by intraruminal injection of oxfendazole and placed in drylot on 31 January. The other 26 animals served as controls. All heifers were pastured starting on 14 June and the treatment heifers were dewormed in the same manner as at the start of the experiment (31 January) on 1 July and 31 July. The groups started out with similar total worm eggs per gram of fecal sample, but the dewormed heifers had fewer counts each month thereafter. The drylot average daily gain of the treated heifers was higher (P = 0.01) and less variable (P = 0.12) and by 29 May these animals were heavier by 11.7 kg (P = 0.10). The treated animals did not gain as fast on pasture (P = 0.20), but the gain continued to be less variable (P = 0.09). Age at puberty was not different. Number of open heifers in the treated group was 4 vs. 15% for the control group (P = 0.18). Deworming by intraruminal injection resulted in faster feedlot gains, more uniform gains during both drylot and pasture, reduced parasites and no abscess at injection sites. Key words: Anthelmintics, oxfendazole, cattle, heifers

Use of triticale silage in diets for growing steers

1992 ◽  
Vol 72 (1) ◽  
pp. 181-184 ◽  
Author(s):  
D. R. ZoBell ◽  
L. A. Goonewardene ◽  
D. F. Engstrom
Keyword(s):  
Key Words ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Average Daily Gain ◽  
Barley Grain ◽  
Dry Matter Intake ◽  
High Moisture ◽  
Key Words Barley ◽  
Barley Silage ◽  
Daily Gain

A total of 120 steers were fed either barley silage (BS) or triticale silage (TS) combined with barley (B) or high-moisture barley (HMB) grain, as a total mixed ration in a 2 × 2 factorial design with three replications. The barley and triticale yields were 9.8 and 8.7 t ha−1, respectively. No differences (P > 0.05) in weight, average daily gain, dry matter intake or feed efficiency were observed for treatments or interactions. TS can be used to replace BS at moderate levels in growing steer rations containing barley grain. Key words: Barley, triticale, silage, steers, performance

MONENSIN, CHLORTETRACYCLINE AND TYLOSIN EFFECTS ON PERFORMANCE AND DIGESTION IN LAMBS FED A GROUND ALFALFA DIET

1989 ◽  
Vol 69 (2) ◽  
pp. 505-508 ◽  
Author(s):  
Z. MIR
Keyword(s):  
Key Words ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Control Diet ◽  
Average Daily Gain ◽  
Neutral Detergent Fiber ◽  
Dry Matter Intake ◽  
Acid Detergent Fiber ◽  
Finishing Diets ◽  
Daily Gain

Supplementing a control diet of ground alfalfa (CON) with monensin (MON), chlortetracycline (CTC) or tylosin (TYL) did not affect (P < 0.05) dry matter intake or average daily gain of market lambs. Feed efficiency with CTC was less than with the unsupplemented control (CON) (6.22 vs. 5.68) (P < 0.05). Mean digestibilities of dry matter, acid detergent fiber and neutral detergent fiber were lower (P < 0.05) with all antibiotic treatments than the CON diet. Relative to CON, nitrogen digestibility was increased with MON (66.3 vs. 70.9%) while that of energy was reduced with TYL (P < 0.05). Rumen ammonia and acetic, propionic and butyric acid concentrations were not influenced by any of the treatments. MON, CTC and TYL were not effective supplements for lambs fed alfalfa finishing diets. Key words: lamb, chlortetracycline, monensin, tylosin, alfalfa hay, digestibility

Effects of feeding high energy or high energy-protein diets to goats

2002 ◽  
Vol 82 (1) ◽  
pp. 119-121 ◽  
Author(s):  
L. A. Goonewardene ◽  
E. Okine ◽  
N. Patrick ◽  
D. Patrick ◽  
P. A. Day ◽  
...  
Keyword(s):  
Key Words ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Growth Efficiency ◽  
High Energy ◽  
Barley Grain ◽  
Carcass Weight ◽  
Gain Ratio ◽  
Protein Diets ◽  
Daily Gain

Growth, efficiency and carcass traits were evaluated for goats fed barley or a concentrate mix (CM). Goats on the CM showed higher (P < 0.01) average daily gain (ADG) (27.5%), end of test weight (11.6%), hot carcass weight (HCW) (14.9%) and rib-eye area (REA) (14.7%), lower (P < 0.02) concentrate to gain ratio (CG) ratio (22.5%) and no differences (P > 0.05) in concentrate intake (CI) and dressing percent (DP), compared to those on barley. Although feeding the CM improved ADG, CG, HCW and REA, it may be relatively more economical to finish goats on whole barley grain. Key words: Goat, high energy, high protein, growth, rib-eye area

scholarly journals EFFECTS OF ZERANOL ON SKELETAL GROWTH OF CULL COWS AND HEIFERS

1985 ◽  
Vol 65 (2) ◽  
pp. 511-513 ◽  
Author(s):  
Z. I. CHAUDHARY ◽  
M. A. PRICE ◽  
S. BUTSON ◽  
M. MAKARECHIAN
Keyword(s):  
Key Words ◽  
Feed Efficiency ◽  
Bone Growth ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Age Groups ◽  
Skeletal Growth ◽  
Feedlot Performance ◽  
Cull Cows ◽  
Daily Gain

Thirty-two cull cows aged from 1 to 13 yr were allocated to five age groups and fed individually for 82 days, then slaughtered. Half of the cows within each group were implanted with 36 mg of zeranol. Zeranol had no significant effect on average daily gain, feed efficiency or backfat thickness, but caused a decrease in radio-ulna mass (P = 0.10) and length (P = 0.03). Rate of bone growth at the distal end of the radio-ulna decreased with increasing age to 0 at 4–5 yr. Key words: Cattle, bone growth, zeranol, cull cows, feedlot performance, carcass traits

PSIV-8 Effect of pre-grazing herbage mass, post-grazing sward height and finishing diet on performance of late-maturing beef steers

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 296-296
Author(s):  
Peter R Doyle ◽  
Mark McGee ◽  
Aidan P Moloney ◽  
Alan K Kelly ◽  
Edward G O’Riordan
Keyword(s):  
Production Systems ◽  
Average Daily Gain ◽  
Live Weight ◽  
Carcass Weight ◽  
Beef Steers ◽  
Grass Silage ◽  
Sward Height ◽  
Herbage Intake ◽  
Animal Growth ◽  
Daily Gain

Abstract Grazing sward structure can influence animal performance in forage-only and forage plus concentrate-based production systems. The objective was to determine the effects of pre-grazing herbage mass (PGHM), post-grazing sward height (PGSH) and indoor finishing diet on performance of weaned, spring-born beef steers. Steers (n = 96, ca. 12 months of age, 396 ± 20.1 kg) previously fed grass silage only over the first winter, were assigned to one of twelve grazing groups, balanced for live weight. Grazing groups were randomly assigned to a two PGHM (1500 or 2500 kg DM/ha) × two PGSH (4 or 6 cm) factorial arrangement of treatments (n = 3 groups/treatment). Steers rotationally grazed Lolium perenne-dominant swards (not mechanically topped) for 222 days. Steers were then accommodated indoors and offered grass silage only (SO) or grass silage + 3.8 kg concentrate DM/head daily (SC) for a 146 day finishing period. Data were analysed using the mixed procedure of SAS with terms for PGHM, PGSH, finishing diet and their interactions in the model. Grazed herbage intake was unaffected by PGHM but was greater for PGSH-6 than PGSH-4 (6.94 vs. 6.18 kg DM/day; P &lt; 0.001). Steer average daily gain at pasture was greater for PGHM-1500 than PGHM-2500 (0.65 vs. 0.60 kg; P &lt; 0.05) and for PGSH-6 than PGSH-4 (0.70 vs. 0.55 kg; P &lt; 0.001). After indoor finishing, carcass weight was unaffected by PGHM, but was heavier for PGSH-6 than PGSH-4 (386 vs. 367 kg; P &lt; 0.01); carcass traits were unaffected by PGHM or PGSH. Carcasses were heavier (+43 kg), fatter (P &lt; 0.001) and more conformed (P &lt; 0.01) for SC than SO. In conclusion, both PGHM-2500 and PGSH-4 restricted animal growth at pasture; however, following an indoor finishing period, carcass weight did not differ between PGHM, but was heavier for PGSH-6 than PGSH-4.

scholarly journals Productivity and aggression at grouping of grower-finisher pigs in large groups

2008 ◽  
Vol 88 (1) ◽  
pp. 9-17 ◽  
Author(s):  
Thusith S Samarakone ◽  
Harold W Gonyou
Keyword(s):  
Body Weight ◽  
Key Words ◽  
Group Size ◽  
Feed Intake ◽  
Feed Efficiency ◽  
Average Daily Gain ◽  
Initial Body Weight ◽  
Mortality And Morbidity ◽  
Large Groups ◽  
Daily Gain

A total of eight 11-wk trials were conducted to evaluate the productivity and aggression at grouping of grower-finisher pigs [initial body weight (BW) = 31.8 ± 5.4 kg (mean ± SD), n = 2304] in two group size treatments (18 and 108 pigs pen-1). Pigs were housed on fully-slatted floors, provided one wet/dry feeder space for every nine pigs, and a floor space allowance of 0.76 m2 pig-1 in both group sizes. The level of aggression at grouping was recorded for 2 h starting 0, 24 and 48 h following grouping into small and large groups. Pigs were weighed on weeks 0, 2, 5, 7 and 11, and average daily gain (ADG) was obtained. Average daily feed intake (ADFI) was recorded during two periods (weeks 2 to 5 and 7 to 11). There was no difference in percentage of time spent on aggression between two group sizes up to 48 h following grouping. ADG for the entire 11-wk trial was affected (2%) by large group size (0.971 and 0.955 kg d-1 for groups of 18 and 108, respectively; P < 0.05). However, the greatest effect on ADG was observed during the first 2 wk following grouping (0.919 and 0.833 kg d-1 for groups of 18 and 108, respectively; P < 0.001). There were no significant effects due to group size on ADFI, feed efficiency, variability in final BW within a pen, carcass traits or mortality and morbidity (P > 0.05). In summary, the overall productivity and aggression at grouping did not differ substantially between group sizes of 18 and 108 pigs pen-1. Key words: Large groups, grower-finisher, pigs, productivity, aggression

Sign in / Sign up

Export Citation Format

Share Document