scholarly journals Effects of supplementing methionine hydroxy analog on beef cow performance, milk production, reproduction, and preweaning calf performance1

2017 ◽  
Vol 95 (12) ◽  
pp. 5597-5605 ◽  
Author(s):  
A. R. Clements ◽  
F. A. Ireland ◽  
T. Freitas ◽  
H. Tucker ◽  
D. W. Shike
Keyword(s):  
Milk Production ◽  
Beef Cow ◽  
Cow Performance

scholarly journals PSI-3 Effects of housing cow-calf pairs in drylots vs pasture during the summer on cow performance

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 228-228
Author(s):  
Keiffer Sexton ◽  
Megan Myerscough ◽  
Wesley Chapple ◽  
William T Meteer ◽  
Keela Trennepohl ◽  
...  
Keyword(s):  
Milk Production ◽  
Milk Fat ◽  
Binary Data ◽  
Pregnancy Rates ◽  
Corn Silage ◽  
Fat Percentage ◽  
Beef Cow ◽  
Dried Distillers Grains ◽  
Milk Urea ◽  
Cow Performance

Abstract The objective was to evaluate the effects of maintaining cows in drylots vs pasture on beef cow performance. Spring-calving, Simmental × Angus cows (n = 108; 84 ± 11 d postpartum) were stratified by age, BW, BCS, calving date, and sex of calves and allotted to 6 groups. Groups were randomly assigned to 1 of 2 treatments for 110 d: drylot (DL) or pasture (PAST). Drylot cows were limit-fed a ration consisting of corn silage, dried distillers grains, hay, corn stalks, corn, and soybean hulls to meet protein and energy requirements. Cows on pasture were rotationally grazed and offered free-choice mineral. On d 0, cows were artificially inseminated (AI). On d 0, 53, and 110 (weaning), cow BW and BCS were measured. On d 54 milk production was estimated using the weigh-suckle-weigh technique. Data were analyzed using the MIXED procedure of SAS. All binary data were analyzed using the GLIMMIX procedure of SAS. On d 0 and 53, cow BW did not differ (P ≥ 0.73) between DL and PAST. On d 110, DL cows had 74 kg greater (P < 0.01) BW than PAST cows. The BCS did not differ (P ≥ 0.66) between treatments. There was no difference in milk production (P = 0.93); however, drylot cows tended (P = 0.10) to have reduced milk fat percentage and had reduced (P < 0.01) milk urea nitrogen. There was no difference (P ≥ 0.34) in AI or overall pregnancy rates between treatments. There was no difference in foot angle or claw set (P ≥ 0.17) of cows at any time point. There was also no difference (P = 0.17) in foot treatments between DL (39%) and PAST (4%). Housing cows in drylots compared to pasture increased BW, but did not affect BCS, milk production, and pregnancy rates.

Effects of housing beef cow-calf pairs on drylot or pasture in the Midwest on production parameters and calf behavior through feedlot receiving

2021 ◽  
Author(s):  
Megan E Myerscough ◽  
Lucas T Neira ◽  
Keifer H Sexton ◽  
Lucas S Hofer ◽  
Keela M Trennepohl ◽  
...  
Keyword(s):  
Milk Production ◽  
Treatment Time ◽  
Body Condition Score ◽  
Average Daily Gain ◽  
Beef Cow ◽  
Condition Score ◽  
Ad Libitum ◽  
Cow Calf ◽  
Cow Performance ◽  
And Behavior

Abstract The objectives were to analyze the effects of housing cow-calf pairs in drylots (DL) or pasture (PAST) on cow performance and reproduction as well as calf performance and behavior through feedlot receiving. Simmental × Angus (2 yr; 108/yr; 81 ± 15.3 d postpartum) spring-calving cows were stratified by age, body weight (BW), body condition score (BCS), and calf sex and allotted to 6 groups/yr. Groups were randomly assigned to 1 of 2 treatments: DL or PAST. Cows in DL were limit-fed at maintenance and calves had ad libitum access to the cow diet in an adjacent pen. Pairs on PAST were rotationally grazed and calves received creep ad libitum three weeks prior to weaning. On d 110 calves were fence-line weaned and behavior was observed on d 111 and 112. On d 116 calves were transported 272 kilometers to a feedlot for a 42-d receiving period. Behavior was evaluated again on d 117 and 118. Data were analyzed using the MIXED procedure of SAS except reproductive data which was analyzed using the GLIMMIX procedure. Cows on DL had greater (P ≤ 0.01) BW and BCS at weaning. There were no differences (P ≥ 0.42) detected in reproductive data. Cows on DL had greater (P = 0.02) milk production. Calves on DL had greater BW (P ≤ 0.01) on d 55 and at weaning and greater preweaning average daily gain (ADG). There were treatment × time effects (P = 0.01) for lying and eating on d 111 and 112. More DL calves were eating in the morning and lying in the evening. More (P < 0.01) PAST calves were walking on d 111. Pasture calves vocalized more (P ≤ 0.01) on d 112. On d 117, more (P ≤ 0.05) pasture calves were lying and eating, and DL vocalized more. On d 118, treatment × time and treatment effects were detected (P ≤ 0.02) for lying and walking. More PAST calves were lying and more DL calves were walking. Drylot calves had greater (P ≤ 0.02) BW at the beginning and end of the receiving phase. Pasture calves had greater (P < 0.01) ADG and tended (P = 0.10) to have greater gain efficiency during feedlot receiving phase. In conclusion, housing cow-calf pairs in drylots improved BW, BCS, and milk production of cows but did not affect reproductive performance. Drylot calves had increased BW and ADG during the preweaning phase. Calf behavior at weaning and receiving was influenced by preweaning housing. Pasture calves had improved receiving phase ADG and feed efficiency but were still lighter than drylot calves after 42 d receiving phase.

358 Effect of supplementing methionine hydroxy analog on beef cow performance, milk production and reproduction

2016 ◽  
Vol 94 (suppl_2) ◽  
pp. 167-168 ◽  
Author(s):  
A. R. Clements ◽  
F. A. Ireland ◽  
D. W. Shike
Keyword(s):  
Milk Production ◽  
Beef Cow ◽  
Cow Performance

43 Cow Performance and Lameness Are Affected by Housing in Drylots vs Pasture During the Summer

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 147-148
Author(s):  
Lucas Hofer ◽  
Megan Myerscough ◽  
Wes Chapple ◽  
Travis T Meteer ◽  
Keela Trennepohl ◽  
...  
Keyword(s):  
Milk Production ◽  
Binary Data ◽  
Body Condition Score ◽  
Hair Coat ◽  
Milk Protein Content ◽  
Condition Score ◽  
Milk Urea ◽  
Cow Performance ◽  
Distillers Grain ◽  
Dried Distillers Grain

Abstract The objective was to compare the performance of cows housed in drylots or on pasture. Spring-calving, Simmental × Angus cow-calf pairs (n = 108; 77 ± 18 days postpartum) were stratified by age, body weight (BW), body condition score (BCS), calving date, and calf sex. Cows were allotted into six groups which were randomly assigned to drylot or pasture. Drylot cows were limit-fed a ration consisting of corn silage, dried distillers grain, corn stalks, cracked corn, and a corn-based supplement to meet protein and energy requirements. Cows on pasture were rotationally grazed with access to free-choice mineral. Cows were artificially inseminated on day 0. Cow BW, BCS, hair coat scores, locomotion scores, and lameness treatments were evaluated throughout the 110-day experiment. Milk production and composition were evaluated on day 56. Data were analyzed using the MIXED and GLIMMIX (binary data) procedures of SAS. Artificial insemination and overall pregnancy rates did not differ (P ≥ 0.79) between groups. Drylot cows were 22 and 51 kg heavier (P ≤ 0.02) than pasture cows on days 83 and 110, respectively. Drylot cow BCS was greater (P = 0.03) on day 110. Hair coat scores were more desirable (P = 0.03) in drylot cows than pasture cows on day 110. Drylot cows had greater (P = 0.04) milk production than pasture cows. Pasture cows had greater (P ≤ 0.03) milk protein content and milk urea nitrogen. Although locomotion scores did not differ (P ≥ 0.45) on days 0 and 34, they were less desirable (P = 0.02) for the drylot cows on day 110. A greater (P = 0.02) percentage of drylot cows (33%) were treated for lameness than pasture cows (7%). Housing cows in drylots increased BW, BCS, and milk production, but resulted in poorer locomotion scores and increased lameness treatments.

scholarly journals 80 Evaluation of extended release eprinomectin efficacy on multiparous beef cow performance

2020 ◽  
Vol 98 (Supplement_2) ◽  
pp. 11-11
Author(s):  
Laine Zammit ◽  
Jermey G Powell ◽  
Reagan N Cauble ◽  
Toby D Lester ◽  
Callan Lichtenwalter ◽  
...  
Keyword(s):  
Extended Release ◽  
Reproductive Traits ◽  
Economic Loss ◽  
Beef Cows ◽  
Negative Control ◽  
Beef Cow ◽  
Body Weights ◽  
Calving Season ◽  
Cow Performance ◽  
Fall Calving

Abstract Internal parasitism inevitability prompts economic loss in beef cattle production by decreasing growth performance and reproductive traits. Previous studies have conflicting results on the macrocyclic lactones (ML) efficacy against internal parasitism. The objective of this study was to evaluate the efficacy of milbeymycin and avermectin sub groups of ML on cow performance. Multiparous fall calving, crossbred beef cows (n = 106) were allocated randomly to 1 of 3 anthelmintic treatments: 1) Negative control (CON), in which cows did not receive an anthelmintic, 2) Injectable moxidectin (MOX) and 3) Injectable extended release eprinomectin (ERE). Body weights (BW), body condition scores (BCS), and fecal egg counts (FEC) were taken throughout the duration of the calving season to weaning on d0, d80, d162, and d217, with weaning occurring on d217. Performance data were analyzed using the MIXED procedures of SAS, and pregnancy data were analyzed using the GENMOD procedures of SAS. Significance was fixed at P < 0.05 and tendencies were established from 0.05 ≤ P ≤ 0.10. There was no effect of anthelmintic treatment on cow BW (P ≥ 0.57) or cow BCS (P ≥ 0.22) during the 217 d study; however, CON cows tended to have lower BCS (P = 0.08) throughout the duration of the study. Cows treated with ERE had fewer FEC compared to MOX and CON groups (P ≤ 0.001) and tended to improve pregnancy rates (c2 = 0.0546). Calf weaning weight was similar among treatments averaging 216, 225, and 223 kg regarding CON, MOX, and ERE cow treatments, respectively.

The use of short-term secretion rate measurements for estimating the milk production of suckler cows

1978 ◽  
Vol 45 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Y. L. P. Le Du ◽  
R. D. Baker ◽  
J. M. Barker
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Milk Composition ◽  
Secretion Rate ◽  
Short Term ◽  
Beef Cow ◽  
Total Milk ◽  
Fat Yield ◽  
Good Agreement

SummaryTwo experiments with dairy cows and one with suckler cows and their calves were conducted to examine the use of secretion rate measurements for estimating total milk production. In the first experiment both 4- and 6- h intervals between measurements gave similar estimates of total 7-d milk yield. The second experiment compared estimated and measured milk composition as well as yield. Milk and solids-not-fat yields were underestimated with dairy cows as a result of an extended milking interval before measurement. However, fat yield was overestimated, indicating that all residual milk was not removed at the first oxytocinaided milking. It was concluded that for the beef cow, previous interval effects would be eliminated by the frequency of calf suckling, but that residual milk effects might cause a 3–6% and a 16% overestimation of milk and fat yields respectively.In the third experiment, the milk yield of suckler cows was estimated from measurements of secretion rate and from changes in calf weight; good agreement was obtained provided there were at least 3 consecutive controlled sucklings.

027 Milk Production Responses to Beef Cow Energy Intakes

2016 ◽  
Vol 95 (suppl_1) ◽  
pp. 13-14 ◽  
Author(s):  
C. M. Spencer ◽  
C. L. Bayliff ◽  
M. D. Redden ◽  
A. L. McGee ◽  
R. Reuter ◽  
...  
Keyword(s):  
Milk Production ◽  
Beef Cow

290 Effects of grazing diverse combinations of sainfoin, birdsfoot trefoil, and alfalfa on beef cow performance and environmental impacts

2017 ◽  
Vol 95 (suppl_4) ◽  
pp. 143-144 ◽  
Author(s):  
S. Lagrange ◽  
K. A. Beauchemin ◽  
J. W. MacAdam ◽  
J. J. Villalba
Keyword(s):  
Environmental Impacts ◽  
Birdsfoot Trefoil ◽  
Beef Cow ◽  
Cow Performance

Effect of increasing proportion of supplemental N from urea in prepartum supplements on range beef cow performance and on forage intake and digestibility by steers fed low-quality forage2

2002 ◽  
Vol 80 (6) ◽  
pp. 1652-1662 ◽  
Author(s):  
H. H. Köster ◽  
B. C. Woods ◽  
R. C. Cochran ◽  
E. S. Vanzant ◽  
E. C. Titgemeyer ◽  
...  
Keyword(s):  
Beef Cow ◽  
Forage Intake ◽  
Cow Performance

The influence of long-term dietary inclusion of the antibiotic Actaplanin on dairy cow performance

1988 ◽  
Vol 1988 ◽  
pp. 110-110
Author(s):  
M.M. Abubakar ◽  
P. Rowlinson
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Dairy Cow ◽  
Milk Fat ◽  
Rumen Fluid ◽  
Increase Milk Production ◽  
Cow Performance ◽  
A Performance

The antibiotic Actaplanin is a complex of glycopeptide compounds produced by Actinoplanes missourrensis. When included in feed as a performance enhancer it has been shown to increase milk production of dairy cows (McGuffey et al. 1983). Actaplanin is associated with reduced proportions of acetate and increased proportions of propionate in rumen fluid and a depression in milk fat proportion may result (Clapperton et al. 1987). The aim of the trial reported here was to monitor the effects of feeding 960 mg Actaplanin/head/d to dairy cows throughout two successive lactations.

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