Distributional characteristics of phenotypic variation within paternal half sib groups for postweaning average daily gain in two beef cattle populations of different origins

1991 ◽  
Vol 108 (1-6) ◽  
pp. 35-40
Author(s):  
M. F. Liu ◽  
M. Makarechian ◽  
R. T. Berg
Keyword(s):  
Beef Cattle ◽  
Phenotypic Variation ◽  
Average Daily Gain ◽  
Different Origins ◽  
Daily Gain

Corn or soybean hull incorporation into haylage-based backgrounding beef cattle diets: Effect on growth and efficiency during the backgrounding and finishing periods

2007 ◽  
Vol 87 (4) ◽  
pp. 615-621 ◽  
Author(s):  
K. C. Swanson ◽  
M. Ko ◽  
C. J. Mader
Keyword(s):  
Body Weight ◽  
Beef Cattle ◽  
Dry Matter ◽  
Average Daily Gain ◽  
Soybean Hulls ◽  
Feedlot Performance ◽  
Final Body Weight ◽  
Plasma Urea ◽  
Soybean Hull ◽  
Daily Gain

This experiment was conducted to evaluate the effects of corn or soybean hull incorporation into haylage-based diets on backgrounding calf performance and subsequent feedlot performance. Crossbred steers [n = 48, initial body weight (BW) = 303 ± 3.4 kg] were individually fed dietary treatments consisting of: (1) haylage [17.5% crude protein, dry matter (DM) basis; control], (2) haylage + 20% (DM basis) cracked corn, and (3) haylage + 20% (DM basis) soybean hulls during a 112-d backgrounding period. After the backgrounding period, all steers were adapted to a common high moisture corn-based finishing diet and fed until an ultrasound estimated backfat thickness of 7 mm was obtained. During the backgrounding period, steers fed cracked corn or soybean hulls had greater (P < 0.01) average daily gain, dry matter intake and gain:feed and lower (P = 0.05) plasma urea N as compared with controls. However, when finished on a common high-concentrate diet, steers previously fed cracked corn had greater (P < 0.08) average daily gain, final body weight, and longissimus muscle area than those fed soybean hulls, suggesting that source of supplemental energy during the backgrounding period may influence subsequent feedlot performance. Key words: Beef cattle, backgrounding, energy supplementation

Synovex® H as a prenatal androgenizing agent in beef cattle: Effects on the implanted pregnant heifer

1995 ◽  
Vol 75 (4) ◽  
pp. 543-548 ◽  
Author(s):  
S. L. Aldrich ◽  
L. L. Berger ◽  
D. J. Kesler ◽  
D. B. Faulkner ◽  
J. W. Castrée
Keyword(s):  
Beef Cattle ◽  
Average Daily Gain ◽  
Control Group ◽  
Serum Concentrations ◽  
Calving Ease ◽  
Calving Rate ◽  
And Control ◽  
Daily Gain ◽  
Estradiol Levels ◽  
Pregnancy Hormones

A study was conducted to evaluate the effectiveness of Synovex® H as an agent for prenatal androgenization in beef cattle. Thirty Charolais-cross heifers, exposed to a fertile bull during a 55-d spring breeding season, were randomly assigned to a control group or implanted with three times the normal dose of Synovex® H between days 20 and 75 of gestation. Serum concentrations of testosterone, estradiol, and progesterone, calving rate, and growth performance were determined in the pregnant heifers. Testosterone levels were greater (P < 0.001) in treated heifers than in control heifers. Synovex® H treatment had no affect on estradiol levels. Progesterone levels were lowered (P < 0.05) in treated heifers. Synovex® H treatment decreased (P < 0.05) calving rate and birth weight of calves born to treated heifers. Calving ease scores were not affected by Synovex® H treatment. Weight was not affected; however, average daily gain was improved 7% by Synovex® H treatment (0.88 vs. 0.82 ± 0.04 kg d−1, treated and control heifers, respectively). These results are interpreted to suggest that Synovex® H is not an appropriate androgenizing agent for cattle due to adverse effects on progesterone concentrations during pregnancy and on calving rate. Key words: Cattle, prenatal androgenization, Synovex® H, pregnancy, hormones

Effect of nutritional regimen including limit feeding and breed on growth performance, carcass characteristics and meat quality in beef cattle

2012 ◽  
Vol 92 (3) ◽  
pp. 327-341 ◽  
Author(s):  
E. M. McGregor ◽  
C. P. Campbell ◽  
S. P. Miller ◽  
P. P. Purslow ◽  
I. B. Mandell
Keyword(s):  
Beef Cattle ◽  
Growth Performance ◽  
Meat Quality ◽  
Shear Force ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
High Energy ◽  
Ad Libitum ◽  
Limit Feeding ◽  
Daily Gain

McGregor, E M., Campbell, C. P., Miller, S. P., Purslow, P. P. and Mandell, I. B. 2012. Effect of nutritional regimen including limit feeding and breed on growth performance, carcass characteristics and meat quality in beef cattle. Can. J. Anim. Sci. 92: 327–341. The effects of nutritional management regimen and breed on growth performance, carcass attributes, and meat quality were evaluated in 68 British (BRIT) and Continental (CONT) crossbred steers, managed on one of three nutritional regimens: (1) ad libitum access to a 77% corn diet (ALGRAIN), (2) limit feeding initially of the 77% corn diet, followed by ad libitum access to the 77% corn diet (LFGRAIN), and (3) limit feeding initially of a 90% haylage diet, followed by ad libitum access to the 77% corn diet (LFHAYL). Nutritional regimen by breed interactions (P<0.02) were present for average daily gain, dry matter intake (DMI), gain to feed, and shear force. LFHAYL regimen decreased gains to a greater extent for BRIT steers than CONT steers managed on ALGRAIN or LFGRAIN. Feed intakes were similar across nutritional regimens for CONT steers, while DMI was depressed in BRIT on LFHAYL as compared with steers started on ALGRAIN or LFGRAIN. Gain to feed was greater in BRIT cattle on LFGRAIN vs. ALGRAIN, while gain to feed was similar in CONT started on grain (ALGRAIN, LFGRAIN). Shear force was lower for beef from LFHAYL BRIT vs. beef from BRIT on ALGRAIN or LFGRAIN, while the converse was true for CONT. Limit feeding of a high-energy diet may be appropriate for cattle of British background to reduce feed input costs, while ensuring tenderness.

scholarly journals Supplement levels and functional oils to replace virginiamycin for young bulls during early dry season on grasslands and finishing phase in feedlot systems

2021 ◽  
Vol 19 (3) ◽  
pp. e0609-e0609
Author(s):  
Diego M. Renesto ◽  
Keyword(s):  
Beef Cattle ◽  
Average Daily Gain ◽  
Sao Paulo ◽  
Dry Season ◽  
São Paulo ◽  
State University ◽  
Forage Crops ◽  
Cashew Nut ◽  
Functional Oils ◽  
Daily Gain

Aim of study: To assess the effects of replacing virginiamycin (VM) by functional oils (FO) from castor beans and cashew nut on beef cattle system during the early dry season (Experiment I) and during the finishing phase were evaluated the historical effect, keeping the treatments and methods intact (Experiment II). Area of study: These experiments were conducted at the Forage Crops and Grasslands section of São Paulo State University, “Julio de Mesquita Filho” (Unesp–Jaboticabal, São Paulo, Brazil). Material and methods: Two supplementation levels combined with two additives (four treatments in total) were evaluated: LSVM, low supplementation (0.3% body weight [BW]) with VM; LSFO, low supplementation (0.3% BW) with FO, HSVM, high supplementation (0.6% BW) with VM, and HSFO, high supplementation (0.6% BW) with FO. In both experiments, the experimental design was completely randomized with a 2 × 2 factorial arrangement (supplementation levels × additives). Main results: In Exp. I, the additive effect of VM provided greater average daily gain (ADG, p=0.02), higher supplementation level resulted in higher ADG (p=0.04) and the greatest crude protein apparent digestibility (p=0.002). However, no effects were observed between supplementation levels, additives, and interactions (p≥0.11) on voluntary intake and ruminal parameters. In Exp. II, LSVM treatment resulted in lower dry matter intake (p=0.04). Animals maintained on LSFO during the early dry season exhibited lower carcass yield (p=0.004). Research highlights: FO can be used to replace VM in beef cattle diet during the finishing phase in the feedlot without altering animal performance.

scholarly journals EFISIENSI PRODUKSI SAPI POTONG PADA PETERNAKAN RAKYAT PADA MUSIM KEMARAU DI DAERAH PERTANIAN LAHAN KERING KABUPATEN GUNUNGKIDUL

2018 ◽  
Vol 32 (1) ◽  
pp. 49 ◽  
Author(s):  
Eka Handayanta ◽  
Lutojo Lutojo ◽  
Kurniasih Nurdiati
Keyword(s):  
Beef Cattle ◽  
Feed Intake ◽  
Feed Efficiency ◽  
Production Efficiency ◽  
Average Daily Gain ◽  
Dry Season ◽  
Efficient Production ◽  
Smallholder Farmer ◽  
Feed Cost ◽  
Daily Gain

<p><em>This research was conducted to know the production efficiency of beef cattle in smallholder farmer in a dry farming area at dry season. Research has been started on June and finished on September (dry season) at smallholder farmer in the village Kemejing, Semin subdistrict, district Gunungkidul, DIY. The research materials are 28 heads of beef cattle from 17 farmers, which consist of 10 heads of PO breed, 10 heads of a Simpo breed, and 8 heads of Limpo breed with 292.25 kg of initial body weight. This research was using Participatory Rural Appraisal method which is a collecting data process that an active teamwork between data collector and farmer. Collected parameter are feed intake, average daily gain (ADG), feed efficiency, feed cost per gain (FC/G), and income over feed cost (IOFC). Data resulting from this research are 8.42 kg/head/day of feed intake, 0.19 kg/head/day of ADG, 0.021 of feed efficiency, Rp 46.166,62 of feed cost per gain, and Rp 3.985,55 of income over feed cost. It can be concluded that the efficient production of beef cattle in smallholder farmer at the dry area is low because average daily gain, feed cost per gain and income over feed cost produced are extremely small so if the calculated economic result is less favorable.</em></p>

scholarly journals 151 Use of an automated computer vision system to predict body weight and average daily gain in beef cattle in different phases of growth development

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 150-151
Author(s):  
Alexandre Cominotte ◽  
Arthur Francisco Araujo Fernandes ◽  
João R R Dorea ◽  
Guilherme J M Rosa ◽  
Otávio Machado-Neto
Keyword(s):  
Computer Vision ◽  
Body Weight ◽  
Beef Cattle ◽  
Production Systems ◽  
Vision System ◽  
Average Daily Gain ◽  
Computer Vision System ◽  
Growth Development ◽  
Predictive Approaches ◽  
Daily Gain

Abstract Frequent measurements of body weight (BW) in livestock production systems are very important because they allow the assessment of growth development of animals. However, monitoring animal growth through traditional weighing scales is laborious and stressful for animals. Thus, the objectives of this study were to: 1) assess the predictive quality of an automated computer vision system used to predict BW and average daily gain (ADG) in beef cattle; and 2) compare different predictive approaches (Multiple Linear Regression: MLR, Least Absolute Shrinkage and Selection Operator: LASSO, Partial Least Squares: PLS, and Artificial Neutral Networks: ANN). A total of 234 images of Nellore beef cattle were collected during weaning, stocker and feedlot phase. Biometric body measurements from each animal were performed using 3D images captured with the Kinect® sensor, together with their respective BW acquired using an electronic scale. The biometric measurements were used as explanatory variables for each predictive model. Prediction quality was assessed using a leave-one-out cross-validation strategy. The ANN approach resulted on higher precision and accuracy for BW prediction compared to the other methods, with Root Mean Square Error of Prediction (RMSEP) and squared predictive correlation (r2) equal to: RMSEP = 8.6 kg and r2= 0.91 for weaning; RMSEP = 11.4 kg and r2= 0.79 for stocker, and RMSEP = 7.7 kg and r2= 0.92 for beginning of feedlot. The ANN was also superior for prediction of ADG for the weaning to stocker, weaning to beginning of feedlot, weaning to end of feedlot, stocker to beginning of feedlot and beginning to end of feedlot, with RMSEP: 0.02, 0.02, 0.03, 0.10 and 0.09 kg/d, and r2: 0.67, 0.85, 0.80, 0.51 and 0.82, respectively. Overall, results indicate that an automated computer vision system is a potential tool for real-time measurement of BW and ADG in beef cattle.

Stylosanthes cv. Campo Grande silage and concentrate levels in diets for beef cattle

2018 ◽  
Vol 58 (3) ◽  
pp. 539 ◽  
Author(s):  
T. C. da Silva ◽  
O. G. Pereira ◽  
R. M. Martins ◽  
M. C. N. Agarussi ◽  
L. D. da Silva ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Control Diet ◽  
Average Daily Gain ◽  
Latin Square ◽  
Control Treatment ◽  
Ruminal Fermentation ◽  
Ruminal Ph ◽  
Tropical Conditions ◽  
Daily Gain ◽  
Potential Use

The objective of this study was to evaluate the ruminal and intestinal digestion, the ruminal fermentation and the performance of beef cattle fed diets containing Stylosanthes silage (StS) and corn silage (CS). The treatments consisted of diets containing StS with different concentrate levels, based on dry matter (DM) (g/kg): 200 (StS-200), 400 (StS-400), 60 (StS-600), and a Control treatment with 600 g/kg CS and 400 g/kg concentrate (CS-400). In Experiment 1, 32 Nellore bulls, 364.28 ± 2.82 kg bodyweight, were distributed in a complete randomised design with eight replicates. Four Holstein × Zebu bulls (average bodyweight of 429 ± 15 kg) were used in Experiment 2, distributed in a 4 × 4 Latin square design. Nutrient intake was similar between StS-400 and CS-400 (P > 0.05), however, only StS-600 showed the same intake of total digestible nutrients as CS-400 (P < 0.05). Only the animals fed the StS-600 diet had similar (P > 0.05) average daily gain of carcass in comparison with those fed the Control diet. The StS-200 and StS-400 diets showed lower (P < 0.05) total tract digestibility of DM and crude protein than CS-400 (P < 0.05). Ruminal pH values of StS-200 and SE-400 were higher (P < 0.05) than in CS-400. The StS-600 diet showed a similar productive performance to CS in diets with 600 g/kg of concentrate, highlighting the potential use of this legume in diets for beef cattle in tropical conditions.

8 Effects of a Bovine Appeasing Substance Application at Weaning on Temperament and Growth of Bos Indicus Influenced Heifers

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 3-4
Author(s):  
Douglas G Viera ◽  
Juliana Ranches ◽  
Marcelo Vedovatto ◽  
Giovana G Pirota ◽  
Bruno I Cappellozza ◽  
...  
Keyword(s):  
Body Weight ◽  
Single Dose ◽  
Beef Cattle ◽  
Average Daily Gain ◽  
Bos Indicus ◽  
Cattle Herd ◽  
Synthetic Analogue ◽  
Skin Area ◽  
To Receive ◽  
Daily Gain

Abstract The objective of this study was to evaluate the effects of a synthetic analogue of the bovine appeasing pheromone (i.e. bovine appeasing substance; BAS) on growth and temperament of heifers. At weaning (d 0), 30 heifers (Aberdeen Angus ′ Nelore; 8 ± 1 mo) were stratified by body weight (199.8 ± 16 kg) and randomly assigned to receive a single dose of BAS (n = 15; SecureCattle; Nutricorp, Araras, SP, Brazil) or saline (CON; n = 15; saline 0.9% NaCl). Treatments (5 ml) were topically applied to the nuchal skin area of each animal on d0. Body weight was collected on d 0, 6, 15, 45, and 150. Chute score (1 to 5; 1 = calm, no movement; 5 = violent and continuous struggling) and chute entrance and exit score (1 to 3; 1 = slow; 3 = fast) were collected on d 0, 2, 6, 15, 45 and 150. Scores were averaged across 4 trained technicians. Data were analyzed using the MIXED procedure of SAS. Heifers assigned to BAS had greater (P &lt; 0.01) average daily gain (ADG) than heifers assigned to CON treatment from d 6 to 15 (2.35 and 1.88 kg/d ± 0.16) and from d 15 to 45 (1.79 vs. 1.56 kg/d ± 0.08). Heifers assigned to BAS had lower (P &lt; 0.01) chute entrance score on d 6, 15, and 45, and chute exit score on d 2 to 45 (P = 0.05) when compared to heifers assigned to CON. Additionally, heifers assigned to BAS tended (P = 0.08) to have lower chute score, from d 1 to 150 than heifers assigned to CON. The application of BAS at weaning improved heifers ADG, likely due to an improvement in temperament, suggesting that BAS application has calming effects in the beef cattle herd.

scholarly journals Probe-based association analysis identifies several deletions associated with average daily gain in beef cattle

BMC Genomics ◽  
2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Lingyang Xu ◽  
Liu Yang ◽  
Lei Wang ◽  
Bo Zhu ◽  
Yan Chen ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Association Analysis ◽  
Average Daily Gain ◽  
Daily Gain

scholarly journals The Effect of Live Yeast Supplementation on Beef Cattle Performance: A Systematic Review and Meta-Analysis

2017 ◽  
Vol 9 (4) ◽  
pp. 21 ◽  
Author(s):  
Everton Dezordi Sartori ◽  
Maria Eugênia Andrighetto Canozzi ◽  
Daniele Zago ◽  
Ênio Rosa Prates ◽  
João Pedro Velho ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Dry Matter ◽  
Randomized Trials ◽  
Meta Analysis ◽  
Average Daily Gain ◽  
Dry Matter Intake ◽  
Inclusion Criteria ◽  
Feed Conversion ◽  
The Mean ◽  
Daily Gain

This meta-analysis evaluates the effects of yeast supplementation (Saccharomyces cerevisiae) on dry matter intake (DMI) and average daily gain (ADG) in beef cattle. The inclusion criteria were complete and randomized trials and supplementation with yeast S. cerevisiae versus no supplementation to measure DMI or ADG. Data were extracted from relevant papers via pre-defined protocols. A meta-analysis of random effects was conducted for each indicator separately including the mean of the control and treated groups. The results were presented with the pooled mean difference (MD), 95% of confidence interval, and I² (percentage of total variation between studies that is due to heterogeneity rather than chance). A total of 12 publications reporting 22 trials conducted in 1,161 cattle were analysed. The heterogeneity between studies was high and ranged from 92 to 99%. No effects were observed in ADG with the inclusion of yeast in the diet (MD = -2.849 g/day, p = 0.492). However, there was a reduction in the DMI (MD = -0.885 kg/day; p = 0.023) despite the high heterogeneity among studies (I2 = 92.4%; p < 0.001). The ADG increased when the forage level in the diet was between 30 and 50% (MD = 641.08 g/day; p = 0.001) and decreased when the level range from 51 to 75% (MD = -2.90 g/day; p < 0.001). In over 60% of the Neutral Detergent Fibre, the use of yeast in the diet decreased the ADG by 406.94 g/day (p = 0.034). Feedlot animals showed a reduction in the DMI (MD = -0.97 kg/day; p = 0.019) if supplemented with yeast. Supplementation with S. cerevisiae in the diet of beef cattle had no effect on ADG; however, it does improve the feed conversion due to the reduction in DMI.

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