PSIII-10 The Effect of Sire Line on Grow-finish Performance, Carcass Characteristics, and Meat Pricing Variables for Commercial Crossbred Pigs

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 169-170
Author(s):  
H Manu ◽  
M Fletcher ◽  
K Fang ◽  
Sudario Roberto Silva Junior ◽  
J Dunkelberger ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Fixed Effects ◽  
Random Effect ◽  
Carcass Characteristics ◽  
White Female ◽  
Large White ◽  
Equivalent Number ◽  
Genetic Source ◽  
Crossbred Pigs ◽  
Synthetic Line

Abstract The objective of this study was to evaluate the effect of sire line on wean-to-finish performance, carcass characteristics, and meat pricing variables. Pigs used for this study were the progeny of a commercial Landrace x Large White female mated to one of the following sire lines: a purebred Duroc line (Line S1), or a synthetic (Line S2) or purebred Duroc line (Line S3) originating from a different genetic source. An equivalent number of pigs (n =144) were used per group, for 432 pigs placed on test. Average initial weights per line were 6.67 ± 0.24, 6.67 ± 0.24, and 6.60 ± 0.24 for lines S1, S2, and S3, respectively. At placement, 8 pigs were assigned to each pen (split sex) and blocked by line and initial BW, with 18 replicates per line. Data were analyzed at the pen level using the PROC MIXED procedure of SAS, where the effects of line, sex, and line*sex were fitted as fixed effects and replicate was fitted as a random effect. Overall, piglets from line S2 (0.403 vs 0.381; P ≤ 0.0004) and line S3 (0.402 vs 0.381; P ≤ 0.001) had improved GF compared with piglets from line S1. The ADFI was greater in piglets from line S1 relative to piglets from line S2 (2.264 vs 2.117 kg; P ≤ 0.0001) and line S3 (2.264 vs 2.159 kg; P ≤ 0.004). The ADG, HCW, dressing yield, and loin depth were not different among treatment (P > 1.00). Piglets from line S3 had greater percent lean (57.12 vs 56.29 %; P ≤ 0.0001) and better carcass grade premium ($7.07 vs 6.60; P ≤ 0.0291) relative to piglets from line S1. In conclusion, line S1 piglets had greatest ADFI, but line S2 pigs and line S3 piglets had better feed efficiency. Line S3 pigs were leaner and had better carcass grade premium.

PSIII-9 The Effect of Sire Line on Reproductive Performance During Lactation

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 169-169
Author(s):  
H Manu ◽  
M Fletcher ◽  
K Fang ◽  
Sudario Roberto Silva Junior ◽  
J Dunkelberger ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Large White ◽  
Randomized Design ◽  
Genetic Source ◽  
Completely Randomized Design ◽  
Line P ◽  
Synthetic Line

Abstract The objective of this study was to estimate the effect of sire line on sow and piglet performance during lactation. Commercial Landrace x Large White females (n = 60) were bred to one of the following sire lines: a purebred Duroc line (Line S1), a synthetic (Line S2), or purebred Duroc (Line S3) from a different genetic source. Matings were balanced by line and parity. Females were fed a common gestation and lactation diet during these respective phases. Sow and piglet data were analyzed as a completely randomized design using the GLM procedure of SAS. Results show that, during lactation, females bred to line S3 lost significantly (P = 0.01) more BW (-16.93 ± 3.56 kg) than females bred to line S2 (-2.00 ± 3.50 kg). However, no evidence of a difference (P = 0.18) in BW loss was detected between females bred to line S3 (-16.93 ± 3.56 kg) vs. Line S1 (-7.90 ± 3.56 kg). Further, sows bred to line S3 weaned significantly (P = 0.03) more piglets (12.0 ± 0.28) than females bred to line S2 (10.9 ± 0.27), but not (P = 0.1) compared to females bred to line S1 (11.7 ± 0.27). No significant effect of line (P > 0.05) or parity (P > 0.05) on total number of piglet’s born, number born alive, number of stillborn piglets, or preweaning mortality was detected. The number of mummified fetus tended to be lower in line S2 (0.17 vs 0.66; P = 0.079) and line S3 (0.12 vs 0.66; P = 0.051) sows compared with line S1 sows, respectively. In conclusion, sire line did not have a significant effect on total number born, number born alive, number stillborn, or preweaning mortality. However, females bred to line S3 lost significantly more BW during lact but weaned significantly more piglets than females bred to line S2.

scholarly journals Fattening performance and carcass traits of implanted and supplemented grassfed bulls

2021 ◽  
Vol XXXI (2) ◽  
pp. 53-60
Author(s):  
Nelson Huerta-Leidenz ◽  
Nancy Jerez-Timaure ◽  
Susmira Godoy ◽  
Carlos Rodríguez-Matos ◽  
Omar Araujo-Febres
Keyword(s):  
Fixed Effects ◽  
Random Effect ◽  
Carcass Traits ◽  
Carcass Characteristics ◽  
Growth Trait ◽  
Daily Weight Gain ◽  
Carcass Quality ◽  
Fattening Performance ◽  
Mineral Supplementation ◽  
Beneficial Impact

Ninety-nine uncastrated males were randomly distributed into four grazing groups to examine variation in growth and carcass traits, due to the implant regime [Implantation of 72 miligrams (mg) of Ralgro® at day (d) 0 followed by its reimplantation at d 90 versus implantation of Revalor® at d 0 followed by 72 mg of Ralgro® at d 90)], and suplementation type [mineral supplementation (MS) versus strategic supplementation (SS)]. With a 2 x 2 factorial arrangement, the analysis of variance included the treatments and their interaction (implant regimen x supplementation) as fixed effects, and the breed type as a random effect. The interaction was not significant; neither did the implant regimen on any growth trait (P > 0.05). Compared to MS, the SS group had a greater daily weight gain (779 vs. 541 grams; P < 0.001), required a shorter (38.3 d lesser) time of fattening to reach the end point (198.3 versus 236.6 d; P < 0.001) with a heavier liveweight (498. 2 vs. 474. 4 kilograms; P = 0.02) at an earlier age (29.4 vs. 30.­8 months; P < 0.001), with a higher carcass dressing percentage (59.13 vs 57.62 %; P = 0.03) and younger carcass bone maturity (P < 0.001). With the exception of thoracic depth, carcass traits did not vary with the implant regimen (P > 0.05). The use of aggressive implant regimens to improve growth or carcass characteristics of grazing bulls is not justified. SS is a feasible practice to improve fattening performance of grazing bulls but no beneficial impact on their carcass quality was expected.

scholarly journals PERFORMANCE AND CARCASS CHARACTERISTICS OF FINISHING PIGS FED RAW OR EXTRUDED FULL-FAT SOYA BEANS RATIONS IN HUMID LOWLAND TROPICS

2021 ◽  
Vol 22 (1) ◽  
pp. 64-67
Author(s):  
H. A. FASHINA-BOMBATA ◽  
O. O. TEWE
Keyword(s):  
Body Weight ◽  
Carcass Traits ◽  
Carcass Characteristics ◽  
Soya Bean ◽  
Finishing Pigs ◽  
Large White ◽  
Swine Diets ◽  
Crossbred Pigs

Sixteen Landracex Large White crossbred pigs  averaging 56 kg body weight were used in a study to uvestigate the effects of feeding raw full-fat soyu bean (RSB) rations on the performance of pigs in humid lowland tropics. Raw full-lat soya bean was used to replace extruded full-fat soyabean at 33, 67 and 100% in finishing swine diets having 16% C.P. and 2800 kcal/kgME and fed ad lib. ADG was reduced by the addition of RSB to the diets (P>0.05). However, FE was improved (P>0.05) when 67 over (P>0.05) when 67 and 100% RSB were added to the diets. RSB significantly (P<0.05) affected backfat deposition and percent lean cut of the carcass. Other carcass traits were not affected. 

Effect of dietary addition of wastewater from a caramel producing plant on the performance and carcass characteristics of pigs

1969 ◽  
Vol 89 (1-2) ◽  
pp. 23-37
Author(s):  
Esbal Jiménez ◽  
Carmen S. Santana-Nieves ◽  
Abner A. Rodríguez
Keyword(s):  
Feed Efficiency ◽  
Dry Matter ◽  
Block Design ◽  
Carcass Characteristics ◽  
Dry Matter Intake ◽  
Daily Weight Gain ◽  
Control Group ◽  
Production Plant ◽  
Randomized Block Design ◽  
Crossbred Pigs

Twenty-four crossbred pigs (Duroc x Yorkshire), 28 days old and of 6.9 kg average liveweight, were used to evaluate effects of dietary addition of 0 (control), 5, and 7.5% of wastewater from a caramel production plant (WWCP) on performance from weaning to finishing at 82 kg average liveweight and on carcass characteristics. A completely randomized block design was used (n = 4). Pigs were fed at the rate of 8% of body weight daily during the postweaning phase (21 days) and 6% for the rest of the experiment. During the post-weaning phase dry matter intake, liveweight gain and feed efficiency were improved with 7.5% but not with 5% addition of WWCP (P ≤  0.08). During the fattening phase (until 74 kg average liveweight), daily dry matter intake and daily weight gain were greater in the control group, whereas during the finishing phase (14 days), feed efficiency improved with the addition of either level of WWCP (P ≤  0.08). Longissimus dorsi area and ham weight were greater in females than in barrows (P ≤  0.05), but no other differences due to the dietary addition of WWCP were detected. These results suggest that swine growth during the first three weeks post-weaning may be improved by the addition of WWCP to the diet at levels of up to 7.5%. However, before further recommendation can be given, additional research is needed on the effectiveness of the use of this wastewater during the fattening-finishing phase. Freshness of this byproduct seemed to have an important effect.

scholarly journals 20 Vaginal microbiome composition is associated with sow longevity

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 23-24
Author(s):  
José Braccini Neto ◽  
Leticia P Sanglard ◽  
Stephan Schmitz-Esser ◽  
Kent A Gray ◽  
Daniel C Linhares ◽  
...  
Keyword(s):  
Fixed Effects ◽  
Mixed Model ◽  
Negative Binomial ◽  
Random Effect ◽  
Predictive Ability ◽  
Operational Taxonomic Unit ◽  
Vaginal Microbiome ◽  
Large White ◽  
Microbiome Composition ◽  
Canonical Variables

Abstract The vaginal microbiome of gilts vaccinated for porcine reproductive and respiratory syndrome (PRRS) has been previously associated with first-parity reproductive performance in absence of PRRS outbreak. However, associations using multiparous sows have not been investigated. The objective of this study was to associate the vaginal microbiota of PRRS-vaccinated gilts with longevity. Vaginal swabs from 251 commercial F1 gilts (Landrace/Large-White) were collected on days 4 and 52 after PRRS vaccination (dpv) for 16S rRNA sequencing. Sequences were clustered into operational taxonomic unit (OTU). Sows were assigned to one of four groups according to the maximum parity reached (number of animals): without parity (13), first-parity (45), second-parity (47), and 3 or more parities (146). A negative binomial mixed model including fixed effects of group, dpv, group*dpv, and collection age (covariate), and random effect of animal, was used to identify OTUs with differential abundance. The false discovery rate method was used for multiple test correction. Canonical discriminant analysis (CDA) was performed to classify animals into the four parity groups by including significant OTUs in stepwise selection (P &lt; 0.05) using the whole data. A leave-one-out-cross-validation was used to assess the predictive ability of OTUs to correctly classify animals into the parity groups. Abundance of five and four OTUs was associated (q &lt; 0.05) with group and with group*dpv (q &lt; 0.05), respectively. In the CDA analysis, 220 OTUs identified in the vaginal microbiome were included (P &lt; 0.05). The first and second canonical variables explained 96.6 and 3.4% of the variation, respectively. All animals were correctly classified into their respective parity groups. This study indicates that the vaginal microbiome composition of gilts collected after PRRS-vaccination may be used to predict longevity in commercial sow herds. This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brazil (Capes) – Finance Code 001.

scholarly journals 209 Effects of high standardized ileal digestible tryptophan:lysine ratios with ractopamine HCL on growth and carcass performance of pigs from 110 to 135 kg

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 68-69
Author(s):  
Hayden E Williams ◽  
Mike D Tokach ◽  
Steve S Dritz ◽  
Joel M DeRouchey ◽  
Jason C Woodworth ◽  
...  
Keyword(s):  
Data Collection ◽  
Soybean Meal ◽  
Feed Efficiency ◽  
Random Effect ◽  
Carcass Characteristics ◽  
Experimental Unit ◽  
Finishing Pigs ◽  
Growth Data ◽  
Carcass Performance ◽  
Dietary Treatments

Abstract Recent research has reported that increasing standardized ileal digestible (SID) Trp:Lys ratio above 20% in finishing pigs fed Ractopamine HCL (RAC) resulted in improved growth and carcass performance, however this response has been inconsistent. Therefore, the objective of this study was to evaluate the effects of feeding high SID Trp:Lys ratios with RAC on growth and carcass performance. A total of 1,791 finishing pigs (PIC 1050×337; initially 110 kg BW) were used in a 27-d study. Pens of 25 or 26 pigs were allotted by initial BW and randomly assigned to 1 of 5 dietary treatments in a RCBD with 14 replications per treatment. The dietary treatments consisted of 5 SID Trp:Lys ratios (20, 22, 24, 26, and 28%). Corn-soybean meal-based diets were formulated to 0.90% SID Lys and contained 10 ppm ractopamine. At d 27, pigs were transported to a packing plant for processing and carcass data collection. Growth data were analyzed (GLIMMIX procedure of SAS) as a RCBD with pen as the experimental unit and initial BW as a covariate. Carcass data were analyzed with pen as the experimental unit and block × treatment as the random effect. Hot carcass weight served as a covariate for analysis of backfat, loin depth, and lean percentage. For overall growth performance, increasing SID Trp:Lys increased (linear, P&lt; 0.0001) SID Trp g/kg of gain and SID Trp intake (Table 1); however, there were no evidence of treatment differences (P &gt;0.10) for ADG or G:F. For carcass characteristics, increasing SID Trp:Lys decreased (linear; P=0.002) carcass yield and tended to decrease (P=0.078) lean percentage. There was no evidence of treatment differences (P &gt;0.10) for HCW, loin depth, carcass ADG, or carcass feed efficiency. In summary, increasing SID Trp:Lys ratios above 20% in pigs fed RAC did not improve growth or carcass performance.

250 Effects of Bunk Management and Bulk Density of Steam-flaked Corn on Growth Performance, Carcass Characteristics, and Liver Score of Finishing Beef Cattle Fed Diets Without Tylosin Phosphate

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 127-128
Author(s):  
Taylor M Smock ◽  
Dale Woerner ◽  
Kristin E Hales
Keyword(s):  
Growth Performance ◽  
Bulk Density ◽  
Fixed Effects ◽  
Management Strategy ◽  
Block Design ◽  
Average Daily Gain ◽  
Random Effect ◽  
Carcass Characteristics ◽  
Liver Abscesses ◽  
Randomized Complete Block Design

Abstract One hundred ninety-two beef steers (BW = 332 ± 8.2 kg) were used in a randomized complete block design to evaluate the effects of differing bunk management and bulk density of steam-flaked corn (SFC) in a randomized complete block design. A factorial arrangement of treatments was used with: 1) slick bunk management (SBM) + 335 g/L SFC; 2) modified ad libitum bunk management (MAL) + 335 g/L SFC; 3) SBM + 425 g/L SFC; 4) MAL+ 425 g/L SFC. Steers were randomly assigned to treatment within BW block, with 12 pen replications per treatment. Data were analyzed using a mixed model with fixed effects of bunk management, SFC bulk density, and their interaction. Block was included as a random effect. Bunk management strategy did not affect growth performance, carcass characteristics, or liver abscess score (P &gt; 0.10). The average daily gain (ADG) of steers fed 425 g/L SFC was greater (P = 0.05) from days 35 to 105 than those fed 335 g/L SFC; however, overall ADG did not differ (P = 0.36). The DMI of steers fed 425 g/L SFC was greater (P ≤ 0.05) than those fed 335 g/L SFC. Gain-to-feed of steers fed 425 g/L SFC tended (P = 0.10) to be lesser from days 0 to 35 but did not differ overall (P ≥ 0.12). Steers fed 425 g/L SFC tended to have greater backfat and calculated empty body fat (P ≤ 0.07) than those fed 335 g/L SFC and had a greater calculated yield grade (P = 0.05). Steers fed 425 g/L SFC had 43.51% fewer (P = 0.04) liver abscesses. Bunk management strategy did not impact growth performance or carcass characteristics; whereas, SFC processed to 425 g/L increased DMI, fat thickness, and yield grade while resulting in a decreased proportion of liver abscesses.

The Belgian Piétrain as a sire of crossbred pigs slaughtered at 64 kg live weight. 1. Performance and carcass characteristics

1976 ◽  
Vol 23 (3) ◽  
pp. 389-393 ◽  
Author(s):  
A. N. Howard ◽  
W. C. Smith
Keyword(s):  
Cross Section ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Large White ◽  
Eye Muscles ◽  
Litter Traits ◽  
Terminal Sire ◽  
Crossbred Pigs ◽  
Farrowing Rate

SUMMARYA Piétrain boar was placed on each of six farms where the terminal sire was a Large White and the breeding females were either Large Whites or Large White × Landrace. Cooperators were requested to obtain 10 litters by each boar and record their performance to slaughter at 64 kg live weight. Farrowing rate to first service was relatively higher for sows mated with Large White boars but not significantly so. Pietrain-cross piglets were heavier at weaning (7·5%) but breed of boar did not influence other litter traits or age of progeny at slaughter. Pietrain crosses had higher carcass yields (2·4%), shorter carcasses (2·5%) and larger eye muscles in cross-section (10·6%) and in commercial evaluations relatively more were placed in the highest grade.

scholarly journals A random effects population dynamics model based on proportions-at-age and removal data for estimating total mortality

2012 ◽  
Vol 69 (11) ◽  
pp. 1881-1893 ◽  
Author(s):  
Verena M. Trenkel ◽  
Mark V. Bravington ◽  
Pascal Lorance
Keyword(s):  
Population Dynamics ◽  
Random Effects ◽  
Fixed Effects ◽  
Random Effect ◽  
Total Mortality ◽  
Estimation Bias ◽  
Effective Sample Size ◽  
Dynamics Model ◽  
Population Dynamics Model ◽  
Study Parameter

Catch curves are widely used to estimate total mortality for exploited marine populations. The usual population dynamics model assumes constant recruitment across years and constant total mortality. We extend this to include annual recruitment and annual total mortality. Recruitment is treated as an uncorrelated random effect, while total mortality is modelled by a random walk. Data requirements are minimal as only proportions-at-age and total catches are needed. We obtain the effective sample size for aggregated proportion-at-age data based on fitting Dirichlet-multinomial distributions to the raw sampling data. Parameter estimation is carried out by approximate likelihood. We use simulations to study parameter estimability and estimation bias of four model versions, including models treating mortality as fixed effects and misspecified models. All model versions were, in general, estimable, though for certain parameter values or replicate runs they were not. Relative estimation bias of final year total mortalities and depletion rates were lower for the proposed random effects model compared with the fixed effects version for total mortality. The model is demonstrated for the case of blue ling (Molva dypterygia) to the west of the British Isles for the period 1988 to 2011.

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