scholarly journals Interrelationship between Dietary Protein Level and Carcass Composition of Chicks

1970 ◽  
Vol 34 (3) ◽  
pp. 414-422 ◽  
Author(s):  
Minoru YOSHIDA ◽  
Hiroshi MORIMOTO
Keyword(s):  
Dietary Protein ◽  
Protein Level ◽  
Carcass Composition ◽  
Dietary Protein Level

PERFORMANCE, CARCASS COMPOSITION, AND FAT COMPOSITION OF BOARS, GILTS, AND BARROWS FED TWO LEVELS OF PROTEIN

1972 ◽  
Vol 52 (3) ◽  
pp. 543-551 ◽  
Author(s):  
J. A. NEWELL ◽  
J. P. BOWLAND
Keyword(s):  
Feed Intake ◽  
Dietary Protein ◽  
Protein Level ◽  
Carcass Composition ◽  
High Protein ◽  
Protein Diet ◽  
Feed Conversion ◽  
Longissimus Dorsi Muscle ◽  
Growing Period ◽  
Dietary Protein Level

Forty-eight pigs, 16 each of boars, barrows, and gilts, were allotted at an average age of 41 days to two treatment groups based on dietary protein level, either 18% protein throughout or 16% protein in the growing period (start to 50 kg) and 13% protein in the finishing period (50–90 kg). Feed intake during the growing period was influenced by sex with boars eating less (P < 0.05) than barrows. No significant differences in feed intake were observed for the overall experiment but the trend established in the growing period still existed. In the overall experiment sex did not influence rate of gain, which averaged 0.72 kg/day. Higher dietary protein level improved (P < 0.01) gain in comparison with the lower levels. A significant interaction existed between sex and protein, boars responding more to high protein than barrows, and gilts being intermediate. Feed conversion was influenced (P < 0.05) by sex and protein level, boars being superior to barrows or gilts and pigs fed the higher protein diet (3.16 kg feed per kg gain) superior to those fed the lower protein diet (3.36 kg feed per kg gain). Barrows dressed 79.6% and gilts 79.3% both higher (P < 0.01) than boars, which dressed 75.9%. Boars had a grade index of 102.6 and gilts 101.4, both of which were higher (P < 0.01) than barrows with 97.9. Other carcass measurements generally ranked the sexes in order of superiority as boars, gilts, and barrows. Boar carcasses had more muscle and less fat (P < 0.01) than barrows, gilts being intermediate. Dietary protein level did not significantly influence carcass composition. Six muscles were analyzed for protein, fat, and ash. No significant differences between sexes were found, but higher protein level increased (P < 0.05) the percentage protein in the longissimus dorsi muscle. Fatty acid analyses of backfat showed no significant differences except in linoleic and linolenic acids, for which boars and gilts had higher percentages than barrows. Detectable sexual odor on cooking was judged to be present in 56% of boar carcasses. If procedures to eliminate sexual odor can be developed, boars offer promise as market animals, particularly if they are fed relatively high protein diets.

Effect of condensed tannins from Birdsfoot trefoil and dietary protein level on growth performance, carcass composition and meat quality of ram lambs

2018 ◽  
Vol 169 ◽  
pp. 118-126 ◽  
Author(s):  
Eleonora Seoni ◽  
Gianni Battacone ◽  
Paolo Silacci ◽  
Silvia Ampuero Kragten ◽  
Jessika Messadene Chelali ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Dietary Protein ◽  
Protein Level ◽  
Condensed Tannins ◽  
Carcass Composition ◽  
Birdsfoot Trefoil ◽  
Dietary Protein Level ◽  
Ram Lambs

Effect of rearing system and of dietary protein level on leptin, growth, and carcass composition in young Podolian bulls

2009 ◽  
Vol 87 (10) ◽  
pp. 3097-3104 ◽  
Author(s):  
R. Marino ◽  
A. Braghieri ◽  
M. Albenzio ◽  
M. Caroprese ◽  
A. Girolami ◽  
...  
Keyword(s):  
Dietary Protein ◽  
Protein Level ◽  
Carcass Composition ◽  
Dietary Protein Level

Effect of Graded Protein Levels on the Growth, Survival and Body Composition of Juvenile Osteobrama belangeri using Semi Purified Diet

2020 ◽  
Author(s):  
Sagar C. Mandal ◽  
Nahakpam Surjobala ◽  
Arun B. Patel ◽  
Janmejay Parhi ◽  
Pramod K. Pandey
Keyword(s):  
Body Composition ◽  
Dietary Protein ◽  
Protein Level ◽  
Cost Effective ◽  
Feed Utilization ◽  
Carcass Composition ◽  
Whole Body ◽  
Nutritional Requirement ◽  
Limited Information ◽  
Dietary Protein Level

Background: Osteobrama belangeri is popularly known as pengba and was widely distributed in lakes and rivers. Protein is the most important nutrient for better growth of fish and other metabolic activities as well as covering higher cost than other nutrients. Limited information is available on the nutritional requirement of O. belangeri. The present study was conducted for determining growth, survival and body composition of O. belangeri using diets of graded protein level. Methods: The present experiment was conducted during 2016 for 40 days using 18 numbers of circular fiberglass reinforced plastic (FRP) tanks in six treatments in triplicate. The experiment was carried out in the wet laboratory of College of Fisheries, CAU (I), Lembucherra, Tripura. Growth performance, survival, feed utilization performance and fish carcass composition were analyzed after completion of the experiment. Result: The investigation suggests that the optimum dietary protein level of 25% gives the best performance in terms of growth, survival, feed utilization and whole-body carcass composition of O. belangeri. From the broken-line analysis on specific growth rate and mean weight gain, the best dietary protein level for O. belangeri is 24.39 to 24.88%. The present work will be useful for formulation of a cost effective diet for pengba for aquaculture.

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