scholarly journals NUTRIENT REQUIREMENTS FOR CANADIAN YORKSHIRE SWINE: II. THE EFFECTS OF BARLEY AND OAT FINISHING RATIONS ON RATE OF GAIN, FEED UTILIZATION AND CARCASS QUALITY OF PIGS MARKETED AT 185 AND 200 POUNDS LIVEWEIGHT

1958 ◽  
Vol 38 (1) ◽  
pp. 73-84 ◽  
Author(s):  
J. M. Bell ◽  
J. P. Bowland ◽  
C. D. T. Cameron ◽  
E. W. Crampton ◽  
L. E. Lloyd ◽  
...  
Keyword(s):  
Environmental Influences ◽  
Feed Utilization ◽  
Carcass Quality ◽  
Nutrient Requirements ◽  
Feeding Trial

Four stations co-operated in a statistically analysed feeding trial to compare barley and oats in self-fed finishing rations. Pigs fed barley gained 0.25 lb. more per day, consumed more TDN and calories daily, had higher dressing percentages, and received lower commercial grades for carcass quality. They had more back fat but Advanced Registry (AR) scores were not significantly different.There was no improvement in commercial grades or AR scores when pigs were slaughtered at 185 instead of 200 lb. liveweight, although lighter pigs had less back fat. Significant differences between stations demonstrate importance of considering genetic and environmental influences when interpreting results of nutrition studies.

Propionic acid-treated barley in the diets of bacon pigs

1975 ◽  
Vol 21 (3) ◽  
pp. 295-302 ◽  
Author(s):  
D. J. A. Cole ◽  
P. H. Brooks ◽  
P. R. English ◽  
R. M. Livingstone ◽  
J. R. Luscombe
Keyword(s):  
Moisture Content ◽  
Growth Performance ◽  
Propionic Acid ◽  
Significant Interaction ◽  
Feed Utilization ◽  
Carcass Quality ◽  
Linear Measurements ◽  
Moisture Contents ◽  
Significant Difference

SUMMARYGrowth performance and carcass quality (linear measurements) were studied in pigs grown from 25 to 90 kg on barley stored and prepared in different ways. Half the barley was dried to about 14% moisture content for storage and half was not dried but treated with 0·8% propionic acid. Each was given after hammer-milling (3·2 mm screen) or rolling. A total of 144 pigs was used at four centres.The performance and carcass quality of pigs given acid-treated barley were as good as those given dried barley. While feed utilization, expressed on the basis of air-dry feed, was poorer for pigs fed on acid-treated barley this difference disappeared when account was taken of the different moisture contents of the barley samples. Pigs fed on diets based on milled barley grew more quickly, had better feed utilization but greater fat measurements than pigs fed on rolled barley. There was a significant interaction between storage method and feed preparation (milling or rolling). Pigs given the acid-treated barley grew more quickly when it was in the milled form than when it was rolled, whereas for the dried barley there was a small, non-significant difference in favour of the rolled form.

INFLUENCE OF ENERGY AND PROTEIN LEVEL IN RATIONS FOR FINISHING MARKET PIGS ON PERFORMANCE AND CARCASS CHARACTERISTICS

1964 ◽  
Vol 44 (2) ◽  
pp. 168-173 ◽  
Author(s):  
D. E. Waldern
Keyword(s):  
Carcass Characteristics ◽  
High Energy ◽  
Feed Utilization ◽  
Carcass Quality ◽  
Feeding Experiment ◽  
Growing Period ◽  
Yorkshire Pigs ◽  
Lower Record ◽  
High Level

Ninety-six Yorkshire pigs, reared during the growing period on high energy–high protein rations, were used in a 2 × 2 factorial feeding experiment to compare two levels of protein at two levels of energy in self-fed finishing rations. Pigs fed a high energy ration gained 0.34 lb more per day, consumed less feed, had more loin and back fat, lower Record of Performance (R.O.P.) scores, and received lower commercial grades than those fed the lower energy ration. The level of protein fed did not affect significantly, rate of gain, feed utilization, or carcass quality. An interaction existed between protein and energy whereby the adverse effects on carcass quality of the high level of energy were modified by the high level of protein with the result that average loin area was increased and a higher R.O.P. score and a higher percentage of grade A carcasses was obtained.

NUTRIENT REQUIREMENTS FOR GROWING AND FINISHING PIGS

1971 ◽  
Vol 51 (3) ◽  
pp. 601-612 ◽  
Author(s):  
K. OWUSU-DOMFEH ◽  
J. M. BELL
Keyword(s):  
Crude Protein ◽  
Feed Utilization ◽  
Finishing Pigs ◽  
Nutrient Requirements ◽  
Digestible Energy ◽  
Digestible Crude Protein ◽  
Calcium And Phosphorus ◽  
Daily Gain ◽  
The U.S

Pig diets for growth and finishing were formulated by linear programming for least cost, and according to the nutrient requirements specified by the U.S. NRC and the British ARC. They were fed to 72 pigs from weaning to finishing, and provided observations on the digestibility of feed, utilization of feed, digestible energy and digestible crude protein, gain in body weight, and quality of carcass. The pigs gained faster and more efficiently than expected from NRC and ARC standards. Pigs fed the ARC diets required less digestible energy per kg gain than pigs fed the NRC diets. The higher levels of protein, vitamins A and D, calcium and phosphorus of ARC standards did not enhance performance. The higher NRC level of digestible energy was not essential to maintain maximum daily gain. The ARC recommendations for lysine and methionine were found to be adequate.

scholarly journals The effect of calorie to protein ratio of practical diets on performance and carcass quality of broiler chickens

2021 ◽  
Vol 32 (2) ◽  
pp. 253-260
Author(s):  
M.A. Tion ◽  
M.T. Orga ◽  
I. A. Adeka
Keyword(s):  
Broiler Chickens ◽  
Carcass Quality ◽  
Feeding Trial ◽  
Protein Ratio ◽  
Final Body Weight ◽  
Poultry House ◽  
Mean Values ◽  
Randomized Design ◽  
Completely Randomized Design

One hundred and ninety two sexed broiler finisher chickens were utilized in a completely randomized design to test the dietary effects of calorie: protein ratio on the performance and carcass quality of Broilers raised 10-63 days of age. Sixteen birds (8 males and 8 females) per pen and 48 per diet were Assigned at random to 12 homogenous pens, each measuring 3.5 x 1.75m? in an open sided poultry house. Feed and water were offered ad libitum. Al the end of the feeding trial, 2 birds of each sex (4 birds/pen and 12/diet), which had their weighis close to the pen average, were selected for carcass evaluation. Processed birds had their abdominal and gizzard fats recovered and weighed. Results showed that calorie: protein ratio had no significant effect on all the performance traits measured. However, statistical analysis of mean values for feed intake and feed: gain ratio was close to attaining significant level at P<0.05. Carcass traits (final body weight, fat weight, and percentage fat) were however significantly (P < 0.05) affected by calorie: protein ratio. The study gives an indication that calorie: protein ratio as wide as 178:7 can be gainfully utilized in this country for finishing broilers to market weight > 2.0kg) in 63 days. 

The Effect of Feeding System on the Carcass Quality of Crossbred Lambs with Texel

2020 ◽  
Vol 68 (1) ◽  
pp. 17-24
Author(s):  
Angela Cividini ◽  
Dušan Terčič ◽  
Mojca Simčič
Keyword(s):  
Growth Rate ◽  
Meat Quality ◽  
Carcass Quality ◽  
Quality Traits ◽  
Feeding System ◽  
Ad Libitum ◽  
Daily Gain ◽  
Effect Of Feeding ◽  
Carcass Cuts

The aim of this study was to estimate the effect of feeding system on the growth rate and carcass quality of crossbred Improved Jezersko-Solčava x Texel (JSRT) lambs and to evaluate the effect of sex on these traits. The trial was conducted in nature according to the traditional rearing systems. The trial included 44 crossbred lambs, which were born and reared until the slaughter in three different flocks. In the age of 10 days suckled lambs were offered with ad libitum corresponding diets according to the feeding system. All lambs were slaughtered in seven consecutive days by the same procedure. The effect of feeding system significantly affected daily gain from birth to slaughter, EUROP carcass conformation and shoulder width. Likewise, the effect of sex significantly affected daily gain from birth to slaughter and internal fatness of carcasses. According to carcass cuts the feeding system significantly affected only the proportion of neck and leg. Considering meat quality traits, feeding system had a significant effect on the pH 45 and CIE a* values. In this study, we could speculate that more than the feeding system the growth and the carcass traits as well as meat traits were affected by the amount of the supplement.

Weight Gain, Grazing Behavior and Carcass Quality of Desert Grass-fed Rarámuri Criollo vs. Crossbred Steers

2021 ◽  
pp. 104511
Author(s):  
Matthew M. McIntosh ◽  
Andrés F. Cibils ◽  
Richard E. Estell ◽  
Shelemia Nyamuryekung'e ◽  
Alfredo L. González ◽  
...  
Keyword(s):  
Weight Gain ◽  
Carcass Quality ◽  
Grazing Behavior
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