Relationships among Definable Characteristics of Feeder Calves, Subsequent Performance and Carcass Traits. I. Objective Measurements

1980 ◽  
Vol 51 (6) ◽  
pp. 1297-1305
Author(s):  
W. T. Butts ◽  
W. R. Backus ◽  
E. R. Lidvall ◽  
J. A. Corrick ◽  
R. F. Montgomery
1981 ◽  
Vol 97 (1) ◽  
pp. 37-44 ◽  
Author(s):  
J. J. Bass ◽  
D. L. Johnson ◽  
F. Colomer-Rocher ◽  
G. Binks

SUMMARYConformation of carcasses from 98 steers from ten different sire breeds was classified according to two visual systems and two objective measurements, which were related to both commercial and dissected carcass composition of their hindquarters. The visual carcass conformation systems, unlike the objective systems, accounted for only a small percentage of the variation in some carcass traits after adjusting for the weights of the right hindquarter and of dissected fat from that hindquarter. Of the carcass conformation systems tested, the objective measurement of area appears to be the best predictor of carcass traits, with the variation in the weight of meat being reduced by 13·4% (P < 0·001) by the inclusion of area measurements. It is suggested that an objective assessment of carcass conformation might be of use in a national carcass classification or grading system.


2018 ◽  
Vol 214 ◽  
pp. 175-179 ◽  
Author(s):  
E. Lanferdini ◽  
I. Andretta ◽  
L.S. Fonseca ◽  
R.H.R. Moreira ◽  
V.S. Cantarelli ◽  
...  

1980 ◽  
Vol 51 (6) ◽  
pp. 1306-1313 ◽  
Author(s):  
W. T. Butts ◽  
E. R. Lidvall ◽  
W. R. Backus ◽  
J. A. Corrick

2014 ◽  
Vol 28 (3) ◽  
pp. 124-135 ◽  
Author(s):  
Daniela Czernochowski

Errors can play a major role for optimizing subsequent performance: Response conflict associated with (near) errors signals the need to recruit additional control resources to minimize future conflict. However, so far it remains open whether children and older adults also adjust their performance as a function of preceding response conflict. To examine the life span development of conflict detection and resolution, response conflict was elicited during a task-switching paradigm. Electrophysiological correlates of conflict detection for correct and incorrect responses and behavioral indices of post-error adjustments were assessed while participants in four age groups were asked to focus on either speed or accuracy. Despite difficulties in resolving response conflict, the ability to detect response conflict as indexed by the Ne/ERN component was expected to mature early and be preserved in older adults. As predicted, reliable Ne/ERN peaks were detected across age groups. However, only for adults Ne/ERN amplitudes associated with errors were larger compared to Nc/CRN amplitudes for correct trials under accuracy instructions, suggesting an ongoing maturation in the ability to differentiate levels of response conflict. Behavioral interference costs were considerable in both children and older adults. Performance for children and older adults deteriorated rather than improved following errors, in line with intact conflict detection, but impaired conflict resolution. Thus, participants in all age groups were able to detect response conflict, but only young adults successfully avoided subsequent conflict by up-regulating control.


2014 ◽  
Vol 3 (1) ◽  
pp. 150-157
Author(s):  
Khalid M. Gaafar

The research was conducted to study the effect of feeding broiler chickens on diets containing isomaltooligosaccharides on the growth performance, carcass traits and immune response. 90-one day old broiler chicks were used according to completely randomized two treatment groups and one control, 30 birds each. Birds fed ad-libitum on basal starter and grower-finisher diets for 35 day. Diets of treatment`s groups contained 0.5 g/Kg and 1 g/Kg of Isomaltooligosaccharides, while the control group fed on the basal diets without Isomaltooligosaccharides supplementation. Dietary supplementation of broiler chickens with Isomaltooligosaccharides improved body weight, feed conversion, carcass traits, two lymphoid organs weight and log antibody titer against avian flu vaccine. Most of the highest values were for birds fed low levels of Isomaltooligosaccharides. Feed intake decreases as Isomaltooligosaccharides level increases. Dietary supplementation with Isomaltooligosaccharides did not affect the lipids profile (triglycerides, total cholesterol, LDL and HDL), however the blood VLDL levels decreased with increased levels of Malondialdehyde and Glutathione reductase. Collectively, Dietary supplementation of broiler chickens with 0.5 g/Kg diet of Isomaltooligosaccharides improved growth performance, carcass traits and immune status.


1992 ◽  
Vol 63 (5) ◽  
pp. 514-519
Author(s):  
Akiyoshi MATSUOKA ◽  
Naomi FUKUZAKI ◽  
Tsuyoshi TAKAHASHI ◽  
Yoshitada YAMANAKA

2002 ◽  
Vol 80 (8) ◽  
pp. 2017 ◽  
Author(s):  
R. L. Sapp ◽  
J. K. Bertrand ◽  
T. D. Pringle ◽  
D. E. Wilson

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