Performance and bunk attendance of cattle fed steam-rolled or ground corn supplemented with laidlomycin and chlortetracycline or monensin and tylosin

2008 ◽  
Vol 88 (3) ◽  
pp. 499-506 ◽  
Author(s):  
D. J. Gibb ◽  
M. Streeter ◽  
K. S. Schwartzkopf-Genswein ◽  
T. A. McAllister

British cross steer calves (n = 240; 332 ± 23 kg) in 16 pens were fed ground (G) or steam-rolled (SR) corn-based finishing diets medicated with 12 mg kg-1 laidlomycin propionate and 42.2 mg kg-1 chlortetracycline hydrochloride (LC) or with 30.4 mg kg-1 monensin sodium and 10.5 mg kg-1 tylosin phosphate (MT) in a 2 × 2 factorial experiment. Individual bunk attendance was monitored using radio frequency identification in one pen per diet. Finishing diets were fed for 125 d following a 27-d adaptation from 65 to 91% concentrate diet. In the first 56 d and overall, daily dry matter intake (DMI) was greater (P < 0.05) with LC than with MT (8.8 vs. 8.3 kg), but did not differ (P = 0.97) between G and SR diets. There was a trend (P = 0.11) towards greater ADG for cattle fed LC than those fed MT (1.54 vs. 1.47 kg d-1), but gain:feed was similar (0.169; P = 0.80) between antibiotic supplements. Processing method did not (P = 0.29) affect rate of gain, but SR tended (P = 0.06) to improve gain:feed compared with G (0.171 vs. 0.165). Steers fed LC spent more (P < 0.001) time at the bunk than those fed MT (125 vs. 120 min d-1). On G diets, cattle fed LC made fewer daily visits (9.3 vs. 9.5 visits d-1; P = 0.03), but spent more time at the bunk (135.9 vs. 124.0 min d-1; P < 0.001) resulting in greater duration per meal (15.4 vs. 13.7 min meal-1; P < 0.001). These cattle also had the greatest deviation in daily duration at the bunk (37.3 vs. 33.7 min; P < 0.001). The prevalence of liver abscesses was 13.2% with LC and 6.5% with MT (P = 0.09). However, the prevalence of severely abscessed livers (2.9%) was unaffected (P = 0.45) by treatment. The prevalence of foot rot was greater (P = 0.02) for cattle fed MT (7.5%) than for cattle fed LC (0.8%). Compared with feeding MT, feeding LC may enhance ADG, possibly due to greater DMI. Key words: Beef, chlortetracycline, corn processing, laidlomycin, monensin, tylosin

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 436-437
Author(s):  
Arquimedes Lima Junior ◽  
Murillo A Meschiatti ◽  
Vinicius N Gouvêa ◽  
Victor Dantas ◽  
Daniel Silva Antonelo ◽  
...  

Abstract The objective of this study was to evaluate the growth performance and carcass traits of finishing bulls fed diets containing, on dietary dry matter basis, different levels of corn wet distillers bran plus solubles (WDBS; 0, 15, 30 or 45%) added with or without corn oil (CO; 0 and 3%). A total of 205 Nellore bulls (390 ± 25 kg initial BW) were blocked by initial body weight, distributed in 40 pens and pens within weight block were randomly assigned to treatments in a 2 × 4 factorial arrangement. Diets were isonitrogenous and contained 8.5% sugarcane bagasse and 91.5% concentrate (ground corn, soybean meal, pelleted citrus pulp, urea, mineral). The WDBS (FlexyDDG®) and the corn oil were from SJC Bioenergia (Quirinópolis, Goiás, Brazil). Data were analyzed using the PROC MIXED procedure of SAS. An interaction between CO × WDBS levels was observed for dry matter intake (DMI; P = 0.032). In diets without CO, increasing levels of WDBS linearly (P = 0.004) reduced the DMI, but in diets containing 3% CO, increasing levels of WDBS quadraticaly affected the DMI (P = 0.002). No effects of CO, WDBSF levels or CO × WDBS levels were observed for final body weight, average daily gain, hot carcass weight and dressing percentage. Feed efficiency tended (P = 0.07) to be greater for bulls fed diets containing CO (0.154 vs. 0.144). Increasing levels of WDBS tended (P = 0.09) to increase the feed efficiency. In summary, increasing levels of WDBS in finishing diets linearly (in diets without CO) or quadratically (in diets with CO) reduces the dry matter intake. Adding CO and WDBS tend to increase feed efficiency.


1969 ◽  
Vol 73 (3) ◽  
pp. 365-372 ◽  
Author(s):  
T. J. Forbes ◽  
A. M. Raven ◽  
J. H. D. Irwin

SummaryAn experiment was carried out in which young beef cattle were given diets containing different levels of coarsely milled (1 in screen) barley straw. The proportions of straw used were 0, 10, 20, 30, 40 and 50 % and the performance of animals on these diets was compared with that of similar animals on an all concentrate diet. Each diet was given ad libitum to six animals. There was a significant linear decline in live-weight gain with increasing straw intake, the rate of decline being 0·62 ± 0·133 kg per week for each 10 % increase in the level of straw in the diet. The dry matter conversion ratio increased linearly with increasing straw intake, the rate of increase being 0·65 ± 0·186 units for each 10 % increase in straw in the diet. Dry matter intake was significantly (P < 0·001) affected by the proportion of straw in the diet. Although dry matter intake increased to a maximum at a level of 18·8% straw in the diet there was no significant increase in the intake of digestible organic matter (DOMI). There was a significant (P < 0·001) linear decline of 0·19 ± 0·04 kg DOMI with each 10% increase in straw in the diet. There was a significant linear decline in chilled carcase weight to the extent of 5·7 ± 0·096 kg for each 10% increase in straw. The killing-out percentage based on unfasted live weight declined significantly as the percentage of straw in the diet rose from 20 to 30%. However, when the killing-out percentage was calculated on the basis of live weight at slaughter less rumen contents there was no significant difference between treatments.


1989 ◽  
Vol 69 (2) ◽  
pp. 505-508 ◽  
Author(s):  
Z. MIR

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


Author(s):  
Yudi Kristyawan ◽  
Achmad Dicky Rizhaldi

 The door is an important component in a building as security. It is used as access in and out of a room. People in the modern era now want everyday life that is completely automated, so that the work can be done easily without wasting energy and can shorten the time. Along with the rapid development, the need for effectiveness and efficiency is prioritized in various fields. The purpose of this paper is to design an automatic sliding door that only detects one Radio Frequency Identification (RFID) card to open and close. The use of RFID systems can strengthen the security level of building access. This study uses a data processing method in the form of an ID number generated from a tag. Specifications in the discussion of the results in this study include a motor that uses a 12-volt DC motor, a maximum door weight of 5 kg, can only detect one RFID to open and close the door, and the sliding door used is one door. The results of system testing are obtained to open a door that is without load, and the door can move 14 cm from the distance of the door hole so that it opens. Doors with a load of 1-1.5 kg also move 14 cm from the distance of the door opening when open. Doors with a load of 2-3 kg only move 12.5-9.5 cm from the distance of the door so that it opens. When the door gets heavier 3.5-4 kg, the door moves only 7.5-3 cm from the distance the door hole remains closed.


2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 225-226
Author(s):  
Lauren Ovinge ◽  
Henry Hilscher ◽  
Bradley M Boyd ◽  
Galen E Erickson

Abstract The effect of high protein dried distillers grains plus solubles in steam flaked corn (SFC) or dry rolled corn (DRC)-based diets on finishing performance was evaluated. Crossbred steers (n = 360, 288 ± 0.54 kg) were blocked into 3 BW blocks and assigned randomly to one of 36 pens. The treatment design was a 2 × 3 factorial. One factor was SFC or DRC-based diets, and the other factor was a control with no DGS (CON), regularly produced DDGS (DDGS), or High Protein DDGS (HiPro) included at 30% in the diet (DM basis). Data were analyzed using MIXED procedure of SAS, with pen serving as the experimental unit. There was an interaction (P = 0.02) between distillers treatment and corn processing for G:F, as including DDGS in DRC diets increased G:F from 0.157 to 0.163, with no difference when using HiPro (P = 0.18; 0.161). In SFC-based diets, there was a tendency (P = 0.11) for DDGS and HiPro to reduce G:F from 0.175 in CON diets to 0.171 in both DDGS and HiPro. When including HiPro, G:F tended (P = 0.10) to decrease SFC-based diets, with no difference (P = 0.18) in DRC-based diets. Gain increased using either distillers source (P 0.01) compared to feeding CON, and tended (P = 0.10) to be greater for DDGS than HiPro. Dry matter intake was lower (P < 0.01) for cattle fed SFC-based diets than DRC-based diets, resulting in greater (P < 0.01) G:F. Carcass adjusted final body weights mimicked the response observed in ADG, as DDGS tended (P = 0.10) to have a greater final bodyweight than HiPro and both were heavier (P < 0.01) than CON. Including either DDGS or HiPro in DRC-based diets improved G:F, but including DDGS or HiPro in SFC-based diets had no impact on G:F.


2001 ◽  
Vol 81 (2) ◽  
pp. 253-261 ◽  
Author(s):  
D. J. Gibb ◽  
S. M. S. Moustafa ◽  
R. D. Wiedmeier ◽  
T. A. McAllister

Feeding behavior and growth performance of cattle fed diets containing monensin or salinomycin were assessed in two trials. In trial 1, 36 Hereford × Angus steers (267.7 ± 4.3 kg) were individually fed (n = 12) wheat-based transition and finishing diets containing no ionophore (control, C), 26 mg monensin (M) or 13 mg salinomycin (S) per kg of dietary dry matter (DM). Cattle fed M consumed less than those fed C or S, and their intake was more stable during the transition to the finishing diet. Overall, steers fed M exhibited lower dry matter intake (DMI) (8.0 vs. 9.2 and 9.2 kg d–1) and rates of gain (1.21 vs. 1.62 and 1.56 kg d–1) than those fed C or S. Cattle fed S required fewer days (93.3) to reach the targeted finish (5 mm backfat) than those fed C or M (105.8 d). Monensin reduced slaughter weight and carcass weights, relative to controls (414.3 vs. 480.5 kg, and 231.2 vs. 245.8 kg, respectively). In trial 2, M (25 ppm) or S (13 ppm) were included in barley-based diets for 72 yearling steers placed in four pens equipped with radio frequency identification systems. Individual bunk attendance patterns were monitored during transition to a finishing diet, during 11 d of limit feeding the finishing diet twice daily (LF2/d), 13 d of limit feeding once daily (LF1/d), and 21 d of feeding once daily to ad libitum intake (AL1/d). Ionophore type did not affect (P > 0.10) DMI, rate of gain or efficiency of feed conversion. Bunk visits were more frequent (P < 0.05) with M than with S during transition and limit-feeding. With M, total daily attendance (TDA) at the bunk during LF1/d and AL1/d, was higher (P < 0.05) than with S, and variability in TDA was lower (P < 0.05) during LF1/d. In the present study, there was no performance advantage in providing S or M in wheat-based finishing diets. Monensin moderated feeding intensity, but this effect may have been strong enough to suppress intake and even reduce gain on the wheat-based diet. Key words: Ionophores, feeding behavior, feedlot cattle, salinomycin, monensin


2019 ◽  
Vol 97 (8) ◽  
pp. 3562-3577 ◽  
Author(s):  
Antonio Humberto F de Melo ◽  
Rodrigo S Marques ◽  
Vinícius N Gouvêa ◽  
Jonas de Souza ◽  
Camila D A Batalha ◽  
...  

Abstract Flint corn processing method [coarse ground corn (CGC; 3.2 mm average particle size) or steam-flaked corn (SFC; 0.360 kg/L flake density)] was evaluated in conjunction with 4 levels of NDF from sugarcane bagasse (SCB) as roughage source (RNDF; 4%, 7%, 10%, and 13%; DM basis) to determine impact on growth performance, carcass characteristics, starch utilization, feeding behavior, and rumen morphometrics of Bos indicus beef cattle. Two hundred and forty Nellore bulls were blocked by initial BW (350 ± 37 kg), assigned to 32 feedlot pens and pens within weight block were randomly assigned, in a 2 × 4 factorial arrangement (2 corn processing and 4 levels of RNDF) to treatments. Effects of corn grain processing × RNDF level were not detected (P ≥ 0.14) for growth performance, dietary net energy concentration, carcass traits, rumen morphometrics, and feeding behavior, except for time spent ruminating and time spent resting (P ≤ 0.04), and a tendency for papillae width (P ≤ 0.09). Bulls fed SFC-based diets consumed 7% less (P = 0.001), had 10.6% greater carcass-adjusted ADG (P < 0.001) and 19% greater carcass-adjusted feed efficiency (P < 0.001) compared with bulls fed CGC-based diets. Observed net energy for maintenance and gain values were 14.9% and 19.4% greater (P < 0.001), respectively, for SFC than for CGC-based diets. Fecal starch concentration was less (P < 0.001) for bulls fed SFC compared with those fed CGC. No grain processing effects were detected (P = 0.51) for rumenitis score; however, cattle fed SFC presented smaller ruminal absorptive surface area (P = 0.03). Dry matter intake increased linearly (P = 0.02) and carcass-adjusted feed efficiency tended (P = 0.06) to decrease linearly as RNDF increased. Dietary RNDF concentration did not affect carcass characteristics (P ≥ 0.19), except for dressing percentage, which tended to decrease linearly (P = 0.06) as RNDF in finishing diets increased. Increasing RNDF in finishing diets had no effect (P = 0.26) on time spent eating, but time spent ruminating and resting increased linearly (min/d; P < 0.001) with increased dietary RNDF. Steam flaking markedly increased flint corn energy value, net energy of diets, and animal growth performance, and led to improvements on feed efficiency when compared with grinding, regardless of RNDF content of diets. Increasing dietary RNDF compromised feedlot cattle feed efficiency and carcass dressing.


2003 ◽  
Vol 83 (1) ◽  
pp. 29-38 ◽  
Author(s):  
K. S. Schwartzkopf-Genswein ◽  
R. Silasi ◽  
T. A. McAllister

Thirty Charolais and 29 Holstein steers (432 ± 30 kg) blocked by weight and breed were randomly assigned to four feedlot pens equipped with radio frequency identification systems in the feed bunks. The systems monitored individual steers’ bunk attendance patterns (time, frequency, and duration of visits). Over four 21-d periods, the steers were offered (two times per day) an 80% barley grain: 20% barley silage diet for ad libitum intake (AL); restricted to 95% of their dry matter intake (DMI); during the previous 21 d; returned to an AL regime for 21 d; then restricted once again (RF). Weather data (air temperature, AT; relative humidity, RH; barometric pressure, BP; and wind speed, (WS) were expected at 1-h intervals throughout the four periods. Steer weights were recorded every 21 d; feed refusals every 7 d. Charolais steers had lower DMI (P < 0.05), higher (P < 0.005) average daily gain (ADG) and were more (P < 0.05) efficient than Holstein steers. Higher daily bunk attendance was recorded for Holstein steers during RF (P < 0.0001), and lowest for Charolais steers during RF (P < 0.0001). Dry matter intake, ADG and feed conversion were higher (v < 0.05) with AL than; with RF. Effects of weather varied with feeding regime and breed. On the AL regime, Charolais steers exhibited larger variation in daily bunk attendance than Holsteins (P < 0.0001) in relation to weather categories AT, RH and BP, but this did not compromise growth performance. Long-term data collection is required to relate the impact of weather on feeding patterns of feedlot cattle over different seasons and in different geographic locations. Key words: Feeding behaviour, feedlot, performance, thermal environment, radio frequency


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