scholarly journals Yeast chromium and digestible lysine levels in finishing pigs subjected to high ambient temperatures

2022 ◽  
Vol 52 (3) ◽  
Author(s):  
Alexandre Pereira dos Santos ◽  
Charles Kiefer ◽  
Karina Márcia Ribeiro de Souza Nascimento ◽  
Anderson Corassa ◽  
Jéssica Lira da Silva ◽  
...  
Keyword(s):  
Heat Stress ◽  
Carcass Characteristics ◽  
Experimental Period ◽  
Finishing Pigs ◽  
Initial Weight ◽  
Ambient Temperatures ◽  
Performance Variables ◽  
Final Weight ◽  
Chromium Yeast ◽  
Recommended Level

ABSTRACT: This study evaluated the effects of chromium yeast and digestible lysine levels on the performance and carcass characteristics of finishing pigs. Sixty-four barrows with an initial weight of 72.77 ± 7.20 kg and final weight of 119.44 ± 9.47 kg were used, distributed in a 2 x 2 factorial scheme, with two levels of chromium yeast (Cr0: 0 ppb and Cr800: 800 ppb) and two levels of digestible lysine (L0: recommended level and L+10%: 10%). The recorded air temperature of 30.9 ± 3.7 ºC during the experimental period was considered as heat stress. Performance variables were not influenced (P>0.05); however, L+10% showed an increase (P<0.05) in daily digestible lysine intake. Carcass characteristics of the animals were not influenced (P>0.05) by the chromium or digestible lysine levels. Supplementation with 800 ppb of yeast chromium and a 10% increase in the level of digestible lysine, isolated or associated, did not improve the performance and carcass characteristics of finishing pigs, subjected to high ambient temperatures.

Bromocriptine-induced reduction of body fat in pigs

1990 ◽  
Vol 68 (4) ◽  
pp. 931-936 ◽  
Author(s):  
L. L. Southern ◽  
A. H. Cincotta ◽  
A. H. Meier ◽  
T. D. Bidner ◽  
K. L. Watkins
Keyword(s):  
Feed Intake ◽  
Feed Efficiency ◽  
Carcass Characteristics ◽  
Feed Utilization ◽  
Finishing Pigs ◽  
Initial Weight ◽  
Intact Female ◽  
Urea Nitrogen ◽  
Plasma Urea ◽  
Fat Thickness

Abstract An experiment was conducted with 36 crossbred finishing pigs (18 male castrates and 18 females) to evaluate the effect of bromocriptine implants on growth, feed intake, feed efficiency, plasma urea nitrogen (PUN) and carcass characteristics. Three levels of bromocriptine (0, 5 and 10 mg/[pig·d]) were administered, via implants at the base of the ear, to six (two replicates of three) male castrates or to six (two replicates of three) intact female pigs (2 × 3 factorial arrangement of treatments). Average initial weight of pigs at the time of implantation was 89.7 kg, and the implants remained in the pigs for 28 (replicate 1) or 30 (replicate 2) d prior to slaughter. Gain, feed intake and efficiency of feed utilization were not affected (P > .10) by bromocriptine. Plasma urea nitrogen was lower in female pigs administered 10 mg bromocriptine; bromocriptine did not affect PUN of male pigs (gender × bromocriptine, P < .08). Tenth rib fat thickness and average backfat thickness were lower (P < .06) and percentage of muscling was higher (P < .06) in pigs implanted with bromocriptine. Female pigs had less 10th rib fat but larger loin eye areas and a greater percentage of muscling than male pigs.

scholarly journals Ractopamine levels for finishing barrows maintained in heat stress

2010 ◽  
Vol 39 (7) ◽  
pp. 1523-1529 ◽  
Author(s):  
Josilene Figueiredo Sanches ◽  
Charles Kiefer ◽  
Alfredo Sampaio Carrijo ◽  
Mariana Souza de Moura ◽  
Elizangela Alves da Silva ◽  
...  
Keyword(s):  
Heat Stress ◽  
Block Design ◽  
Experimental Period ◽  
Daily Weight Gain ◽  
Optimum Level ◽  
Feed Conversion ◽  
Randomized Block Design ◽  
Final Weight ◽  
Quantitative Characteristics ◽  
Four Levels

The objective of this study was to evaluate performance, quantitative characteristics of carcass, and visceral responses of barrows maintained on heat stress enviroment and fed diets supplemented with ractopamine. It was used 48 animals with initial weight of 67.3 ± 3.8 kg, distributed in a randomized block design with four levels of ractopamine (0, 5, 10 and 20 mg/kg), each one with six replicates with two animals each. The experimental period lasted 28 days. Air temperature was 31.8 ± 2.0ºC, air humidity was 72.6 ± 10.2% and BGHI was 82.7 ± 2.8. Daily feed intake was not affect by the levels of ractopamine but they improved feed conversion and increased daily weight gain and final weight of the animals. The carcass quantitative characteristics were not affected by levels of ractopamine. The weights of the liver and kidneys showed linear increases accordingly to increase of ractopamine levels in the diet whereas weight of other organs and length of small intestine were not affected by supplementation with ractopamine. The optimum level of ractopamine for the best performance of barrows under heat stress is 20 mg/kg and it does not affect the quantitative characteristics of carcass.

scholarly journals Net energy and ractopamine levels for barrows weighing 70 to 100kg

2016 ◽  
Vol 46 (7) ◽  
pp. 1268-1273 ◽  
Author(s):  
Liliane Maria Piano Gonçalves ◽  
Charles Kiefer ◽  
Karina Márcia Ribeiro de Souza ◽  
Danilo Alves Marçal ◽  
Rodrigo Caetano de Abreu ◽  
...  
Keyword(s):  
Block Design ◽  
Energy Levels ◽  
Carcass Characteristics ◽  
Experimental Unit ◽  
Net Energy ◽  
Feed Conversion ◽  
Initial Weight ◽  
Randomized Block Design ◽  
Final Weight ◽  
Quantitative Characteristics

ABSTRACT: The purpose of this study was to evaluate net energy and dietary ractopamine levels for barrows weighing 70 to 100kg. The 150 pigs investigated (initial weight 70.80±3.84kg) were distributed in a randomized block design with a 5×3 factorial arrangement, comprising five levels of net energy (2,300; 2,425; 2,550; 2,675; and 2,800Kcal kg-1 of diet) and three levels of ractopamine (5, 10, and 20ppm kg-1 of diet), with five replicates, and two animals per experimental unit. No interaction (P>0.05) was observed between net energy and ractopamine levels. Increasing the dietary net energy levels led to a linear reduction in feed intake, with a linear improvement in feed conversion. Net energy levels had no observable effect (P>0.05) on weight gain, final weight, or carcass characteristics. A dietary net energy level of 2,800Kcal kg-1 can be recommended for pigs weighing 70-100kg, improving feed conversion without affecting carcass characteristics, regardless of dietary ractopamine levels. Ractopamine levels above 5ppm did not affect performance or modify the quantitative characteristics of carcasses, regardless of dietary net energy levels.

Performance and carcass characteristics of growing-finishing pigs fed diets containing graded levels of canaryseed

2003 ◽  
Vol 83 (1) ◽  
pp. 89-93 ◽  
Author(s):  
P. A. Thacker
Keyword(s):  
Carcass Characteristics ◽  
Experimental Period ◽  
Protein Digestibility ◽  
Linear Increase ◽  
Finishing Pigs ◽  
Feed Conversion ◽  
Swine Industry ◽  
Dry Matter Digestibility ◽  
Gross Energy ◽  
Pig Performance

This study was conducted to determine the performance and carcass characteristics of growing-finishing pigs fed diets containing graded levels of canaryseed. Sixty-four crossbred pigs (Pig Improvement Canada Ltd) weighing 34.4 ± 2.8 kg were assigned on the basis of sex, weight and litter to one of five dietary treatments in a factorial (5 treatments × 2 sexes) arrangement. A barley and soybean meal diet served as the control. The remaining pigs were fed diets in which approximately 25, 50, 75 or 100% of the barley was replaced by canaryseed (cv. Elias). There was a linear (P = 0.01) decrease in dry matter digestibility with increasing level of canaryseed. In contrast, crude protein digestibility showed a linear increase (P = 0.01) with increasing level of canaryseed. Gross energy digestibility of the diets did not differ (P > 0.05). Over the entire experimental period (34.4 to 107.8 kg), there was a quadratic (P = 0.01) response for weight gain. The 25% canaryseed diet supported the highest growth rate and pigs fed the 100% canaryseed diet had the lowest gain. Feed intake and feed conversion were unaffected (P > 0.05) by level of canaryseed. There were no differences (P > 0.05) in carcass weight, carcass value index, estimated lean yield, loin fat depth or loin lean depth as a result of canaryseed inclusion. However, there was a quadratic (P = 0.02) response for dressing percentage with increasing level of canaryseed. The overall results of this experiment provide a favorable indication that canaryseed can be successfully fed to growing-finishing pigs without dramatically affecting pig performance or carcass characteristics. Therefore, in the future, the swine industry may provide an alternative to the caged bird market as an outlet for growers of canary seed to market their product. Key words: Canaryseed, swine, digestibility, growth

Gill histopathology of juvenile Oncorhynchus kisutch exposed to suspended wood debris

1988 ◽  
Vol 66 (10) ◽  
pp. 2164-2169 ◽  
Author(s):  
Brad G. Magor
Keyword(s):  
Light Microscopy ◽  
Oncorhynchus Kisutch ◽  
Dry Weight ◽  
Experimental Period ◽  
Initial Weight ◽  
Weight Increment ◽  
Wood Debris ◽  
Final Weight ◽  
Gill Filaments ◽  
Gill Histopathology

Gill histopathology was examined in three groups of parr of coho salmn (Oncorhynchus kisutch (Walbaum)) maintained for 30 days in suspended wood debris (< 1.00 mm diameter; concentrations of 44–132 mg/L dry weight) collected from an estuarine log sorting site. Gills of fishes were examined by light microscopy following exposure, and histopathologic responses were indexed by percentage of gill filaments affected. Lamellar edema and telangiectasis each had statistically significant (P < 0.05) associations with exposure to the suspended debris, and the severity of these conditions was positively correlated with increased concentrations of debris. The severity of hyperplasia of the primary filament epithelium did not correlate with the concentration of debris. The total number of gill lesions in each fish (sum of hyperplasia, telangiectasis, and edema) was positively correlated with the concentration of debris to which the fish were exposed, and negatively correlated with the percent weight increment (((final weight – initial weight)/initial weight) × 100) of fishes over the experimental period.

Türkiye’de Besiye Alınan Simmental, Aberdeen Angus, Hereford, Limousin ve Charolais Irkı Sığırların Besi Performansı ve Karkas Özellikleri

2017 ◽  
Vol 5 (11) ◽  
pp. 1383
Author(s):  
Serdar Duru ◽  
Halil Sak
Keyword(s):  
Weight Gain ◽  
Carcass Characteristics ◽  
Carcass Weight ◽  
Daily Weight Gain ◽  
Initial Weight ◽  
Fattening Performance ◽  
Final Weight ◽  
Ad Libitum ◽  
Fattening Period ◽  
Better Than

In this research, it was aimed to determine fattening performance and carcass characteristics of Simmental (SIM), Aberdeen Angus (ANG), Hereford (HER), Limousin (LIM) and Charolais (CHA) breeds. For this purpose, 606 male cattle between 10 and 12 months old imported from Uruguay and France in 2015 were used. All animals were fed ad-libitum for the same ration throughout the fattening period for approximately 7-9 months. Since the animals were slaughtered between April-June 2016, their fattening period were different. As a result of variance analysis, the effects of breed, initial weight (IW) and fattening period (FP) were found to be significant. For SIM (n=100), ANG (n=147), HER (n=149), LIM (n=104) and CHA (n=106); IW were 261.6, 267.3, 276.7, 264.1, 276.7 kg; FP were 206.7, 238.1, 261.4, 227.0, 283.6 days; final weight were 523.4, 543.3, 563.1, 545.5, 589.7 kg; daily weight gain were 1362.9, 1275.9, 1214.2, 1266.9, 1101.1 gr; hot carcass weight were 303.4, 317.7, 332.1, 319.3, 351.2 kg, respectively. CHA performed better than the others for the carcass weight, while SIM for daily weight gain is higher.

EFFECTS OF RAPESEED GUMS ON THE FEEDING VALUE OF DIETS FOR GROWING-FINISHING PIGS

1981 ◽  
Vol 61 (2) ◽  
pp. 463-467 ◽  
Author(s):  
L. W. McCUAIG ◽  
J. M. BELL
Keyword(s):  
Rapeseed Meal ◽  
Feed Consumption ◽  
Finishing Pigs ◽  
Apparent Effect ◽  
Significant Deterioration ◽  
Dietary Level ◽  
Ambient Temperatures ◽  
Final Weight ◽  
Storage Effects ◽  
Feeding Value

Gums from high and low glucosinolate rapeseed oils were mixed at 1, 2 and 4% levels into Tower rapeseed meal (RSM; low glucosinolate cultivar) and soybean meal (SBM). These meals were fed in grower diets at 15.1 and 12.6% levels, respectively, to 72 pigs from 23 kg initial to 91 kg final weight. Neither the source nor level of gums had any effect on rate of growth or feed consumption. The digestibility of energy was determined by feeding Tower gums at 0, 1.25, 2.50, 5.00 and 10.00% of diets containing 15% of gums-free Tower RSM. Gums had no apparent effect on energy digestibility. All diets were 80% (79.6 ± 0.5) digestible, regardless of dietary level of gums, indicating that gums were similarly well digested. Samples of RSM and SBM containing 8% gums were kept in burlap containers at ambient temperatures over a 7-mo period to determine storage effects. No significant deterioration occurred as indicated by acid values, color or anisidine values. There were some differences in values between RSM and SBM but probably not of nutritional importance.

scholarly journals THE EFFECTS OF GRADED LEVELS OF BREWERS' DRIED GRAINS AND MAIZE COBS IN THE DIETS OF PIGS ON THEIR PERFORMANCE CHARACTERISTICS AND CARCASS QUALITY

2021 ◽  
Vol 2 (1) ◽  
pp. 119-133
Author(s):  
G. M. Babatunde ◽  
B. L. Fetuga ◽  
V. A. Oyenuga ◽  
A. Ayoade
Keyword(s):  
Carcass Characteristics ◽  
Experimental Period ◽  
Feed Utilization ◽  
The Other ◽  
Carcass Quality ◽  
Initial Weight ◽  
Weight Range ◽  
Maize Cobs ◽  
Quality Measurements ◽  
Better Than

A TRIAL was run with 70 weaner Yorkshire and Yorkshire x Landrace pigs to determine the effects of graded levels of brewers' grains and maize cobs on the performance and carcass characteristics of pigs. The two products were included at the levels of 5, 10 and 15 while the protein contents of the diet were maintained at approximately 20% throughout the experimental period that lasted from the initial weight of 17.0 kg to the slaughter weight of about 92 kg. Pigs were slaughtered at the predetermined liveweight of 92 kg and were conventionally graded. The results showed no significant differences among treatments and between products with respect to average daily gains and efficiencies of feed utilization, but the average daily feed and digestible energy intakes were significantly affected for the weight range of 17 to 55 kg, but not for the other weight ranges. Generally, pigs on brewers° dried grains tended to perform better than those on maize cobs hut the differences were not always significant. With respect to carcass quality measurements, although there were no significant differences among treatment means, there was a tendency towards lower fat measurements and higher lean parameters as the levels of the products increased from 5 to 15%. There were some significant differences between the two products in the carcass measurements of pigs, and the measurements were closely alike in some other measurements. It is concluded that the two products can be conveniently used to replace the more expensive maize component at least up to the 15% level tested in this trial without seriously depressing the performance of pigs.

The effects of copper source and concentration on growth performance, carcass characteristics, and pen cleanliness in finishing pigs

2017 ◽  
Vol 95 (9) ◽  
pp. 4052 ◽  
Author(s):  
K. F. Coble ◽  
J. M. DeRouchey ◽  
M. D. Tokach ◽  
S. S. Dritz ◽  
R. D. Goodband ◽  
...  
Keyword(s):  
Growth Performance ◽  
Carcass Characteristics ◽  
Finishing Pigs
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