scholarly journals Effects of stocking rate and corn gluten feed supplementation on performance of young beef cows grazing winter-stockpiled tall fescue-red clover pasture1

2007 ◽  
Vol 85 (6) ◽  
pp. 1577-1586 ◽  
Author(s):  
R. Driskill ◽  
J. R. Russell ◽  
D. R. Strohbehn ◽  
D. G. Morrical ◽  
S. K. Barnhart ◽  
...  
Author(s):  
James R. Russell ◽  
Ronda Driskill ◽  
Daniel G. Morrical ◽  
Daryl R. Strohbehn ◽  
Stephen K. Barnhart ◽  
...  

1988 ◽  
Vol 66 (2) ◽  
pp. 522 ◽  
Author(s):  
C. S. Cordes ◽  
K. E. Turner ◽  
J. A. Paterson ◽  
J.G.P. Bowman ◽  
J. R. Forwood

2020 ◽  
Vol 98 (Supplement_2) ◽  
pp. 48-49
Author(s):  
Charles A Zumbaugh ◽  
Adam R Murray ◽  
Taylor A Langford ◽  
Olivia M Claire ◽  
Thomas B Wilson

Abstract This experiment compared the performance response of supplementing corn gluten feed (CGF) or corn to calves grazing stockpiled tall fescue pastures over a 70-d period. Forty-four Angus x Simmental calves (238 ± 4 kg) were stratified across 6 treatments by BW and sex in a 2 x 3 factorial arrangement. Calves were supplemented cracked corn (n = 16) or CGF (n = 18). Calves were housed in 2 pastures and supplemented individually using the SmartFeed Pro feeding system, with all treatments represented in each pasture. Supplement DMI was programmed at 0.59, 0.87, or 1.13% BW. Calves which failed to train to the feeding system (n = 10) were treated as an un-supplemented control. Weight and flesh condition score (FCS) were recorded every 14-d, and ultrasound 12th rib fat thickness (FT) was measured on d 0 and 70. Data were analyzed with PROC GLM in SAS with supplement type as a main effect, sex as a fixed effect, and group as a random effect. Individual supplement DMI was included in the model as a covariate rather than a main effect due to high variation. Significance was defined at P ≤ 0.05 and means were separated using LSD. Initial BW, FCS, and FT were similar (P ≥ 0.12) among treatments. No differences (P ≥ 0.25) were observed in supplement DMI throughout the experiment. No differences (P ≥ 0.64) were observed in ADG and supplement G:F through 14 d. Through d 28 to 70, CGF-fed calves had greater (P ≤ 0.03) ADG and supplement G:F relative to corn-fed calves. Final FCS was greater (P < 0.01) for CGF-supplemented calves relative to those supplemented corn, though FT was not different (P = 0.87). These data indicate that supplementing CGF rather than corn yields a greater performance response in beef calves grazing stockpiled tall fescue.


2017 ◽  
Vol 1 (3) ◽  
pp. 296-303
Author(s):  
E. G. Taylor ◽  
R. P. Lemenager ◽  
K. R. Stewart

Abstract Forty-eight primiparous and diparous Angus-Simmental cows were fed 1 of 3 diets; 1) total mixed ration (TMR) based of corn silage and corn stalks (CON), 2) TMR with 3.3 kg/d DM of corn gluten feed (CGF; MID), or 3) TMR with 6.7 kg/d DM of CGF (HIGH). From 11 ± 5 days post-partum (DPP) to 105 ± 5 DPP, all diets were formulated to be isocaloric for a post-partum ADG targeted at 0.22 kg, but CP exceeded requirements in both CGF diets. Blood samples were collected from cows starting at trial initiation until estrous synchronization for determination of plasma progesterone concentration (7 d intervals), as an indicator of resumption of cyclicity, as well as for plasma urea nitrogen (PUN; 21 d intervals). Milk production was assessed at 62 ± 5 DPP via a weigh-suckle-weigh procedure, and milk samples were collected at 64 ± 5 DPP for composition analysis. A 5 d Co-Synch + Control Internal Drug Release (CIDR) protocol was used and cows were bred by timed artificial insemination (TAI). Trans-rectal ultrasonography was used for the evaluation of the dominant follicle at TAI, as well as pregnancy diagnosis. Nineteen days post-TAI, cow and calf pairs were managed as a single group until weaning (205 ± 5 DPP) and exposed to natural mating for a total of a 60 d breeding season. Dam ADG was not significantly different among treatments (P = 0.849), but, DMI decreased with increasing CGF in the diet (P = 0.049). There were no differences in final BW (P = 0.779), however, final BCS was lower in the HIGH treatment when compared to the MID (P = 0.042). Milk production (P = 0.457), as well as, milk components (P ≥ 0.188) were not different, with the exception of milk fat, which tended to be greater in the HIGH treatment (P = 0.059) when compared to the MID. A treatment by week interaction (P < 0.0001) was found for PUN concentrations. Concentrations were greater in the HIGH treatment compared to the MID treatment at 63, 84, and 105 d, and greater than the CON treatment at all time points except d-42. There were no differences in resumption of cyclicity (P = 0.419), dominant follicle (P = 0.648), or TAI conception rates (P = 0.761). However, season long pregnancy rates were significantly greater in the CGF treatments when compared to the CON (P = 0.009). In summary, feeding high or intermediate amounts of CGF neither has a positive nor negative effect on TAI conception rates of beef cows, however, it positively affected season long pregnancy.


2020 ◽  
Vol 98 (Supplement_2) ◽  
pp. 39-39
Author(s):  
Claire L Timlin ◽  
Taylor Parrish ◽  
Nicholas W Dias ◽  
Felipe Santili ◽  
Stefania Pancini ◽  
...  

Abstract We hypothesize that expression of peroxisome proliferator-activated receptors (PPARs; PPARa, PPARg, PPARd) and prostaglandin synthases (PGES, AK1B1) in endometrial tissue of Bos taurus beef cows changes after supplementation with calcium salts of soybean oil (CSSO) rich in omega-6 fatty acids compared to a saturated fat. Multiparous cows, stratified by BW (658.05±16.64 kg) and BCS (7.52±0.18), were randomly assigned to one of two treatments: 1) 0.7 kg/(hd.d-1) corn gluten feed + 0.1 kg/(hd.d-1) of prilled saturated fatty acids (Energy Booster, Milk Specialties, Eden Prairie, MN; CON, n = 12); or 2) 0.7 kg/(hd.d-1) corn gluten feed + 0.1 kg/(hd.d-1) of CSSO (Essentiom, Church and Dwight Co., Inc., Princeton, NJ; CSSO, n = 13). Cows were given a 21-d adaptation period before initiation of the experiment, maintained on common pasture, provided ad libitum access to forage and water, and individually fed treatments. Cows underwent a 7-d CO-Sync+CIDR estrus synchronization protocol beginning d0. Transrectal ultrasonography was performed d14 to determine location of a corpus luteum (CL). Uterine biopsies were collected d18 and d28 of the study, corresponding to d8 and d18 of the estrous cycle, respectively. One biopsy was taken from the anterior-most portion of uterine horns ipsilateral and contralateral to the CL for RNA extraction. Transcript expression was analyzed with reverse transcriptase qPCR and quantified using the 2-ddCt method with GAPDH as reference gene. There was no treatment effect for any transcripts analyzed (P ≥ 0.30), nor an interaction between treatment, horn relative to CL, and day (P ≥ 0.11). Transcript expression increased for both treatments from d18 to d28 for PPARa (0.8±0.18 vs. 1.8±0.22, P = 0.01), PPARd (1.13±0.12 vs. 1.9±0.13, P < 0.01), PPARg (1±0.2 vs. 1.3±0.25, P = 0.01), and AK1B1 (0.62±0.16 vs. 2.34±0.22, P < 0.01). While uterine transcript expression of selected genes increased through the luteal phase, supplementing beef cows with CSSO did not affect transcript expression compared to cows receiving saturated fat.


2011 ◽  
Vol 73 (2) ◽  
pp. 153-158 ◽  
Author(s):  
Menghe H. Li ◽  
Edwin H. Robinson ◽  
Brian G. Bosworth ◽  
Daniel F. Oberle ◽  
Penelope M. Lucas

1988 ◽  
Vol 71 (5) ◽  
pp. 1204-1210 ◽  
Author(s):  
S.L. Gunderson ◽  
A.A. Aguilar ◽  
D.E. Johnson ◽  
J.D. Olson

Sign in / Sign up

Export Citation Format

Share Document