scholarly journals The Effects of Dietary Fat on Growth Performance, Carcass Composition, and Feed Efficiency in the Broiler Chick ,

1994 ◽  
Vol 73 (9) ◽  
pp. 1362-1369 ◽  
Author(s):  
MICKEY A. LATOUR ◽  
E. DAVID PEEBLES ◽  
CAROLYN R. BOYLE ◽  
J.D. BRAKE
Keyword(s):  
Growth Performance ◽  
Dietary Fat ◽  
Feed Efficiency ◽  
Carcass Composition ◽  
Broiler Chick

scholarly journals Influence of dietary fat source and feeding duration on finishing pig growth performance, carcass composition, and fat quality1,2

2016 ◽  
Vol 94 (7) ◽  
pp. 2851-2866 ◽  
Author(s):  
E. W. Stephenson ◽  
M. A. Vaughn ◽  
D. D. Burnett ◽  
C. B. Paulk ◽  
M. D. Tokach ◽  
...  
Keyword(s):  
Growth Performance ◽  
Dietary Fat ◽  
Carcass Composition ◽  
Feeding Duration ◽  
Finishing Pig

scholarly journals Effects of feeding transgenic canola on apparent digestibility, growth performance and carcass characteristics of lambs

2003 ◽  
Vol 83 (2) ◽  
pp. 299-305 ◽  
Author(s):  
K. Stanford ◽  
J. L. Aalhus ◽  
M. E. R. Dugan ◽  
G. L. Wallins ◽  
R. Sharma ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Feed Efficiency ◽  
Transgenic Line ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
Carcass Composition ◽  
Canola Meal ◽  
Apparent Digestibility ◽  
Transgenic Canola

This study evaluated the effects of including meal from glyphosate-tolerant (Roundup-Ready®) canola (RRC) in barley-based diets for lambs on apparent digestibility of the diets, growth performance of the lambs, and carcass quality and composition. Four isonitrogenous diets were prepared that included canola meal [6.5%, dry matter (DM) basis] from four different sources (two commercially available canola blends, COM1 and COM2; a transgenic line, RRC and the parental non-transgenic line from which RRC was derived, PAR). Apparent digestibilities of the four diets were determined using eight mature wethers (67.8 ± 2.3 kg) in a replicated Latin square with four 21-d periods. No aspect of digestibility (DM, fibre, or nitrogen balance) was influenced by canola source. The growth trial involved 60 early-weaned Arcott lambs (30 ewes; 30 wethers; initial age approximately 2 mo; initial weight 21.5 ± 1.0 kg). The lambs were blocked by weight and gender for assignment to treatments, and fed the diets until reaching or exceeding 45 kg body weight. Intake of DM was similar among lambs fed COM1, COM2 and PAR diets, and between PAR and RRC (COM1, COM2 > RRC, P < 0.05). Diet did not affect (P > 0.05) average daily gain or feed efficiency. Carcass yield grade was higher (P < 0.05) for COM1 and COM2 diets than for PAR or RRC, although carcass composition did not differ (P > 0.05) between PAR and RRC. Canola source did not affect (P > 0.05) meat tenderness, as determined by shear force, drip loss or intramuscular fat content. Meat colour o f RRC-fed lambs did not differ from that of all other treatment groups. In this study, including canola meal prepared from glyphosate-tolerant canola did not alter diet digestibility, feed efficiency, growth performance, carcass characteristics or meat quality of lambs. Key words: Growth, lambs, meat quality, ruminant, transgenic canola

Effect of trenbolene acetate/estradiol implants and estrus suppression on growth performance and carcass characteristics of beef heifers

1997 ◽  
Vol 77 (2) ◽  
pp. 325-328 ◽  
Author(s):  
J. D. Popp ◽  
T. A. McAllister ◽  
W. J. Burgevitz ◽  
R. A. Kemp ◽  
J. P. Kastelic ◽  
...  
Keyword(s):  
Growth Performance ◽  
Key Words ◽  
Feed Efficiency ◽  
Effective Means ◽  
Carcass Traits ◽  
Carcass Characteristics ◽  
Carcass Composition ◽  
Factorial Experiment ◽  
Beef Heifers ◽  
Melengestrol Acetate

The effects of estrus suppression (none, oral melengestrol acetate (0.4 mg d−1) or ovariectomy via Willis spay technique) and an anabolic implant (none or Synovex Plus®) on growth performance and carcass characteristics were determined using 90 beef heifers of composite breeding in a 2 × 3 factorial experiment conducted in the last 50 d before slaughter. Spaying caused no morbidity or mortality and resulted in average daily gains (1.37 kg d−1) comparable to heifers fed melengestrol acetate (1.33 kg d−1). Implanting improved (P < 0.05) feed efficiency and increased (P < 0.05) animal gain, ribeye area, carcass weight and yield and reduced (P < 0.05) intramuscular fat deposition but estrus suppression did not. Method of estrus suppression did not influence (P > 0.05) carcass traits. Spaying and implanting represent an effective means of improving returns from heifers, even late in the finishing period. Key words: Ovariectomy, implants, beef heifers, carcass composition

scholarly journals Influence of dietary fat source and feeding duration on pig growth performance, carcass composition, and fat quality

2014 ◽  
pp. 210-226
Author(s):  
Ethan W Stephenson ◽  
Mathew A Vaughn ◽  
Derris D Burnett ◽  
Chad B Paulk ◽  
Michael D Tokach ◽  
...  
Keyword(s):  
Growth Performance ◽  
Dietary Fat ◽  
Carcass Composition ◽  
Fat Quality ◽  
Feeding Duration

scholarly journals PSV-28 Feeding Ractopamine Improves Growth Performance and Carcass Characteristics of the Lard-type Mangalica Pig

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 361-361
Author(s):  
Hunter R Smith ◽  
Maegan Reeves ◽  
Ellie Amerson ◽  
Jason T Sawyer ◽  
Terry D Brandebourg
Keyword(s):  
Growth Performance ◽  
Feed Efficiency ◽  
Carcass Composition ◽  
Economic Feasibility ◽  
Pork Quality ◽  
Marbling Score ◽  
Niche Markets ◽  
Slow Growth Rate ◽  
Body Weights ◽  
Excessive Adiposity

Abstract Mangalica pigs are a popular niche breed given their reputation for superior quality pork; however, the slow growth rate, poor lean yield and excessive adiposity exhibited by this breed limits its widespread adoption. Our objective was to determine if feeding Ractopamine (RAC), a metabolic modifier that improves feed efficiency and lean yield, would improve growth performance without impairing pork quality in the Mangalica. To accomplish this, a growth trial was conducted whereby pigs (n = 28) weighing 73 kg were fed a standard grower ration supplemented with either 0 or 22 ppm RAC for 21 days during which daily feed intakes and weekly body weights were recorded for all animals. Then pigs were finished to a 105 kg harvest weight. At 24h postmortem, carcasses were ribbed at the 10th rib to facilitate pork quality and carcass composition measurements. Primal cuts were fabricated and individually weighed. As hypothesized, RAC increased ADG (P &lt; 0.04) and feed efficiency (P &lt; 0.03) 24% and 21% respectively. However, unexpectedly, RAC failed to suppress voluntary feed intake (P &gt; 0.71). Interestingly RAC increased LEA (P &lt; 0.0001) by 21% but did not impact 10th rib fat depth (P &gt; 0.90) or marbling score (P &gt; 0.77). Likewise, RAC failed to alter any primal cut weights. Feeding RAC lowered b* values (P &lt; 0.04) and tended to lower L* values (P &lt; 0.08) while not affecting a* values (P &gt; 0.30) suggesting RAC darkened loin color. Finally, RAC improved cook loss percentage (P &lt; 0.02) 11% while not impacting WBSF (P &gt; 0.31). Collectively, these data support the hypothesis that feeding RAC to the lard type Mangalica pig improves growth performance without impairing pork quality in this breed. Feeding RAC may be a viable strategy to improve the economic feasibility of utilizing this breed to target niche markets.

1476 Endocannabinoid concentrations in plasma associated with feed efficiency and carcass composition on crossbreed steers

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 716-717
Author(s):  
V. M. Artegoitia ◽  
A. P. Foote ◽  
R. M. Lewis ◽  
D. A. King ◽  
S. D. Shackelford ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Carcass Composition

Endocannabinoid concentrations in plasma during the finishing period are associated with feed efficiency and carcass composition of beef cattle

2017 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
V. M. Artegoitia ◽  
A. P. Foote ◽  
R. G. Tait ◽  
L. A. Kuehn ◽  
R. M. Lewis ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Feed Efficiency ◽  
Carcass Composition
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