scholarly journals Components of feed efficiency in broiler breeding stock: energetics, performance, carcass composition, metabolism, and body temperature

2003 ◽  
Vol 82 (7) ◽  
pp. 1080-1090 ◽  
Author(s):  
DO Skinner-Noble ◽  
RG Teeter
Keyword(s):  
Body Temperature ◽  
Feed Efficiency ◽  
Carcass Composition ◽  
Breeding Stock

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

scholarly journals Effects of maternal supplementation with an injectable trace mineral on subsequent calf performance and inflammatory response1

2019 ◽  
Vol 97 (11) ◽  
pp. 4475-4481 ◽  
Author(s):  
Rebecca S Stokes ◽  
Mareah J Volk ◽  
Frank Ireland ◽  
Daniel W Shike
Keyword(s):  
Body Temperature ◽  
Feed Efficiency ◽  
Average Daily Gain ◽  
Area Under The Curve ◽  
Serum Cortisol ◽  
Trace Mineral ◽  
Blood Samples ◽  
Lps Challenge ◽  
Calf Performance ◽  
Maternal Supplementation

Abstract Newly weaned, commercial Angus steers [body weight (BW) = 204 ± 19 kg; n = 24; 12 steers from dams administered an injectable trace mineral (MM; Mulimin90) and 12 steers from control (CON) dams] were utilized to determine the effects of maternal supplementation with an injectable trace mineral on the inflammatory response of subsequent steers subjected to a lipopolysaccharide (LPS) challenge at the initiation of a 42-d receiving period. On day −2 steers were weaned, and the following day, shipped 354 km to the Beef Cattle and Sheep Field Laboratory in Urbana, IL. On day 0, steers were administered an intravenous LPS challenge. Body temperature and blood samples were collected from steers prior to LPS administration (0 h) and again at 0.5, 1, 2, 3, 4, 5, and 6 h. Blood samples were analyzed for trace mineral and cortisol at 0 and 2 h and glucose, insulin, LPS-binding protein (LBP), interleukin-1β (IL-1β), interleukin-6 (IL-6), haptoglobin, ceruloplasmin, and fibrinogen at 0, 0.5, 1, 2, 3, 4, 5, and 6 h. Calf BW was collected at trial initiation and subsequently every 14 d. Dry matter intake was collected daily and average daily gain (ADG) and feed efficiency were assessed. Initial plasma Zn tended (P = 0.06) to be greater for MM steers. However, there was no difference (P ≥ 0.31) in trace mineral status or serum cortisol at any other time. Total area under the curve (TAUC) for body temperature was lesser (P > 0.01) for MM steers. Basal LBP concentrations and TAUC for LBP tended (P ≤ 0.10) to be greater for MM steers. Peak concentration of IL-6 tended (P = 0.09) to be reached earlier for CON steers. However, there was no difference (P ≥ 0.11) in glucose, insulin, IL-6, ceruloplasmin, haptoglobin, and fibrinogen concentrations between treatments. Calf performance and feed efficiency did not differ (P ≥ 0.17) between treatments except ADG from day 28 to 42, which was greater (P = 0.03) for CON steers. Maternal supplementation with an injectable trace mineral tended to improve steer plasma Zn status at 0 h and tended to increase basal concentrations of LBP and overall LBP production when steers were administered an LPS challenge. Additionally, MM steers exhibited a more favorable change in body temperature following LPS administration. However, injectable trace mineral supplementation of dams during gestation had minimal to no effect on cytokine and acute-phase protein concentrations, as well as overall calf performance and efficiency during a 42-d receiving period.

SOME PHYSIOLOGICAL AND NUTRITIONAL ASPECTS OF THE DWARF CHICKEN

1971 ◽  
Vol 51 (1) ◽  
pp. 209-216 ◽  
Author(s):  
G. RAJARATNAM ◽  
J. D. SUMMERS ◽  
A. S. WOOD ◽  
E. T. MORAN Jr.
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Weight Gain ◽  
Body Temperature ◽  
Metabolic Rate ◽  
Body Weight Gain ◽  
Carcass Composition ◽  
Lower Body ◽  
Brand Name ◽  
Dwarf Chicken

A study was undertaken to investigate the feasibility of hypothyroidism as an explanation for the smaller body size and lower metabolic activity of the recessive sex-linked dwarf chicken. A significant increase in body weight gain and feed intake for dwarf chicks with little change in these parameters for normal chicks receiving a diet supplemented with Protamone (brand name for iodinated casein) suggests a hypothyroidic state for the dwarfs. Similarly, a significantly lower body temperature, oxygen consumption and basal metabolic rate with a higher percentage of carcass fat in dwarf chicks as compared with normal ones supports the above hypothesis. Protamone supplementation of the diet increased body temperature and metabolic rate, and altered the carcass composition of the dwarfs to values closer to that of normal chicks, again suggesting a low thyroxine output for the dwarfs.

scholarly journals Evaluating core body temperature and lying behavior as an indicator of feed efficiency profile of beef cattle-consuming forage-based diets12

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. 1632-1635
Author(s):  
Daalkhaijav Damiran ◽  
Obioha Durunna ◽  
Edouard Timsit ◽  
John R Campbell ◽  
Kathy A Larson ◽  
...  
Keyword(s):  
Body Temperature ◽  
Beef Cattle ◽  
Feed Efficiency ◽  
Core Body Temperature ◽  
Core Body

scholarly journals Influence of dietary roughage level and Megasphaera elsdenii on feedlot performance and carcass composition of thin cull beef cows fed for a lean market

2019 ◽  
Vol 4 (1) ◽  
pp. 159-169
Author(s):  
Jonathan C DeClerck ◽  
Nathan R Reeves ◽  
Mark F Miller ◽  
Bradley J Johnson ◽  
Gary A Ducharme ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Body Condition Score ◽  
Average Daily Gain ◽  
Beef Cows ◽  
Carcass Composition ◽  
Finishing Diets ◽  
Caloric Density ◽  
Significant Difference ◽  
Megasphaera Elsdenii ◽  
Compensatory Gain

Abstract One hundred forty-four cull cows (body condition score = 2.10 ± 0.61; BW = 456 ± 47 kg) were organized into a 2 × 2 factorial design (48 pens, 12 pens/treatment, and 3 cows/pen) to evaluate the effect of dietary roughage level and oral drenching of Megasphaera elsdenii NCIMB 41125 (M. elsdenii culture; Lactipro Advance; MS Biotec Inc., Wamego, KS) on performance and carcass characteristics. Cattle were finished over a 42-day realimentation period, and aggressively stepped up over a 10-day period to either a high roughage finisher (HRF; 25% roughage) or a low roughage finisher (LRF; 10% roughage). Within diet, cattle were administered no probiotic or 100 mL of M. elsdenii culture (M. elsdenii NCIMB 41125, 2 108 cfu/mL) on day 0. No diet × probiotic interactions were detected (P ≥ 0.15), suggesting that the magnitude of the response was not influenced by the concentrate level of the diet. The main effect of diet triggered several significant responses. Decreasing roughage level tended to improve average daily gain (ADG) by 9.7% (0.26 kg, P = 0.08), while decreasing dry matter intake (DMI) by 0.9 kg (P = 0.09), provoking a 19.7% enhancement of feed efficiency (0.036 units, P < 0.01). However, interim data revealed declines of performance parameters among both diets with a significant difference between treatments only documented during the final phase of the realimentation period. During the final 14 days, LRF posted a 0.68 kg increase in ADG (P = 0.05) and a 2.0 kg decrease in DMI (P = 0.01), translating to improved feed efficiency (0.054 units, P = 0.03). This suggests that increasing the caloric density of finishing diets may help offset the regression of performance typically observed following a compensatory gain. No carcass traits were impacted by either diet or M. elsdenii culture (P ≥ 0.08). Overall, oral drenching of M. elsdenii culture tended to augment ADG (0.26 kg, P = 0.08) and carcass ADG (0.20 kg, P = 0.10). Implying that M. elsdenii culture was effective at alleviating the acidosis risk prompted by the rapid step-up period employed in the trial and may help capitalize on the narrow timeline of compensatory gain in cull cow realimentation.

RESPONSE OF GROWING-FINISHING PIGS TO DIETARY INCLUSION OF GREEN FOXTAIL (Setaria viridis) SEEDS

1984 ◽  
Vol 64 (4) ◽  
pp. 1063-1066
Author(s):  
A. G. CASTELL
Keyword(s):  
Growth Rate ◽  
Feed Intake ◽  
Feed Efficiency ◽  
Growing Pigs ◽  
Carcass Composition ◽  
Apparent Digestibility ◽  
Finishing Pigs ◽  
Setaria Viridis ◽  
Green Foxtail ◽  
Ad Libitum

Increasing the level of wheat screenings (95% green foxtail seeds) from 0 to 25% in diets fed ad libitum over the period from 34 to 89 kg liveweight resulted in an increased daily feed intake (P < 0.05), reduced (P < 0.05) feed efficiency and apparent digestibility, but produced no consistent effects on growth rate or carcass composition. Key words: Growing pigs, green foxtail, Setaria viridis, carcass, digestibility

Endocannabinoids concentrations in plasma associated with feed efficiency and carcass composition of beef steers1

2016 ◽  
Vol 94 (12) ◽  
pp. 5177-5181 ◽  
Author(s):  
V. M. Artegoitia ◽  
A. P. Foote ◽  
R.M. Lewis ◽  
D. A. King ◽  
S. D. Shackelford ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Carcass Composition

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
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