Evaluation of the bloodless castration procedure for feedlot bulls

1993 ◽  
Vol 73 (4) ◽  
pp. 967-970 ◽  
Author(s):  
D. R. ZoBell ◽  
L. A. Goonewardene ◽  
K. Ziegler
Keyword(s):  
Key Words ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Daily Gain

Studies were undertaken to evaluate bloodless castration (B) based on growth and carcass traits. During the first 28 d, bloodless and surgical (S) castrates showed a 51–53% and 68–73% reduction in average daily gain, respectively, compared with intact bulls (I) (P < 0.05) in two trials. Bulls grew faster than steers overall. Carcass traits and grade were similar for B, S and I (P > 0.05). Key words: Bloodless, surgical, castration, growth, carcass traits

A preliminary evaluation of growth and carcass traits in Alpine and Boer goat crosses

1998 ◽  
Vol 78 (2) ◽  
pp. 229-232 ◽  
Author(s):  
L. A. Goonewardene ◽  
P. A. Day ◽  
N. Patrick ◽  
H. D. Scheer ◽  
D. Patrick ◽  
...  
Keyword(s):  
Key Words ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Preliminary Evaluation ◽  
Muscle Area ◽  
Boer Goat ◽  
Dressing Percentage ◽  
Daily Gain

Birth weights of Boer (BO) sired kids were 9% higher than Alpine (AL) sired kids. Weaning, 160 d weight and preweaning average daily gain (ADG) were similar for the AL × AL, AL × SA and BO × AL. Breed of dam was significant (P < 0.02) for birth, weaning, 100-d weight, and preweaning ADG. Similar dressing percentage (DP) and ribeye muscle area (REA) were observed among AL × AL, AL × SP, and BO × SP crosses. Key words: Crossbreeding, Boer, Alpine, growth, carcass, ultrasound

Effects of feeding high energy or high energy-protein diets to goats

2002 ◽  
Vol 82 (1) ◽  
pp. 119-121 ◽  
Author(s):  
L. A. Goonewardene ◽  
E. Okine ◽  
N. Patrick ◽  
D. Patrick ◽  
P. A. Day ◽  
...  
Keyword(s):  
Key Words ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Growth Efficiency ◽  
High Energy ◽  
Barley Grain ◽  
Carcass Weight ◽  
Gain Ratio ◽  
Protein Diets ◽  
Daily Gain

Growth, efficiency and carcass traits were evaluated for goats fed barley or a concentrate mix (CM). Goats on the CM showed higher (P < 0.01) average daily gain (ADG) (27.5%), end of test weight (11.6%), hot carcass weight (HCW) (14.9%) and rib-eye area (REA) (14.7%), lower (P < 0.02) concentrate to gain ratio (CG) ratio (22.5%) and no differences (P > 0.05) in concentrate intake (CI) and dressing percent (DP), compared to those on barley. Although feeding the CM improved ADG, CG, HCW and REA, it may be relatively more economical to finish goats on whole barley grain. Key words: Goat, high energy, high protein, growth, rib-eye area

scholarly journals EFFECTS OF ZERANOL ON SKELETAL GROWTH OF CULL COWS AND HEIFERS

1985 ◽  
Vol 65 (2) ◽  
pp. 511-513 ◽  
Author(s):  
Z. I. CHAUDHARY ◽  
M. A. PRICE ◽  
S. BUTSON ◽  
M. MAKARECHIAN
Keyword(s):  
Key Words ◽  
Feed Efficiency ◽  
Bone Growth ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Age Groups ◽  
Skeletal Growth ◽  
Feedlot Performance ◽  
Cull Cows ◽  
Daily Gain

Thirty-two cull cows aged from 1 to 13 yr were allocated to five age groups and fed individually for 82 days, then slaughtered. Half of the cows within each group were implanted with 36 mg of zeranol. Zeranol had no significant effect on average daily gain, feed efficiency or backfat thickness, but caused a decrease in radio-ulna mass (P = 0.10) and length (P = 0.03). Rate of bone growth at the distal end of the radio-ulna decreased with increasing age to 0 at 4–5 yr. Key words: Cattle, bone growth, zeranol, cull cows, feedlot performance, carcass traits

Effects of feeding added protein and fat on feedlot performance and carcass quality in large frame steers

1994 ◽  
Vol 74 (3) ◽  
pp. 547-549 ◽  
Author(s):  
D. F. Engstrom ◽  
L. A. Goonewardene ◽  
R. Volek ◽  
R. E. Grimson ◽  
R. P. Stilborn ◽  
...  
Keyword(s):  
Key Words ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Carcass Weight ◽  
Carcass Quality ◽  
Feedlot Performance ◽  
Daily Gain

Feeding added protein to large frame steers increased average daily gain (ADG) and intake but had no effect on dry matter:gain, carcass weight and carcass quality. Including 2% added fat had no effect on ADG and carcass traits. However, feeding 4% added fat increased ADG to 56 d, although ADG overall and carcass quality were not influenced. Key words: Feeding, protein, fat, steer, carcass quality, average daily gain

HERITABILITIES AND GENETIC CORRELATIONS FOR ULTRASONIC BACKFAT MEASUREMENTS, GROWTH AND CARCASS TRAITS IN SWINE

1982 ◽  
Vol 62 (3) ◽  
pp. 665-670 ◽  
Author(s):  
D. C. JEFFRIES ◽  
R. G. PETERSON
Keyword(s):  
Key Words ◽  
Genetic Correlation ◽  
Genetic Parameters ◽  
Average Daily Gain ◽  
Genetic Correlations ◽  
Phenotypic Correlation ◽  
Ultrasonic Measurements ◽  
Yorkshire Pigs ◽  
Daily Gain ◽  
Season Interaction

Genetic parameters were estimated for 2403 purebred Yorkshire pigs over a 2-yr period, representing 21 sires. The traits studied included average daily gain, age adjusted to 90 kg, ultrasonic measurements of backfat at the mid-back and loin positions, total and adjusted total ultrasonic backfat and corresponding carcass backfat measurements. Least squares analyses were used to estimate and adjust for the effects of sex, year-season and sex by year-season interaction. Heritabilities and genetic correlations were calculated for all traits using both half- and full-sib estimates. Adjusted age and adjusted total ultrasonic backfat measurements were found to have the highest heritabilities of the live traits in this study. Estimates of heritability for adjusted age and adjusted total ultrasonic backfat were 0.24 ± 0.10 and 0.26 ± 0.10 based on half-sib and 0.56 ± 0.07 and 0.41 ± 0.06 from full-sib analyses. The genetic correlation between these two traits was −0.07 ± 0.28 based on the half-sib method. The total phenotypic correlation was −0.01 ± 0.02. Key words: Swine, ultrasonic backfat, heritabilities, genetic correlations

The effect of deworming naturally infected heifers on liveweight gain, reproductive performance and fecal egg counts

1993 ◽  
Vol 73 (2) ◽  
pp. 287-293
Author(s):  
S. L. Boyles ◽  
L. J. Johnson ◽  
W. D. Slanger ◽  
B. J. Kreft ◽  
J. D. Kirsch
Keyword(s):  
Key Words ◽  
Reproductive Performance ◽  
Fecal Sample ◽  
Average Daily Gain ◽  
Treated Group ◽  
The Other ◽  
Control Group ◽  
Age At Puberty ◽  
Daily Gain

Twenty-six of 52 heifers with an average liveweight of 318 kg were dewormed by intraruminal injection of oxfendazole and placed in drylot on 31 January. The other 26 animals served as controls. All heifers were pastured starting on 14 June and the treatment heifers were dewormed in the same manner as at the start of the experiment (31 January) on 1 July and 31 July. The groups started out with similar total worm eggs per gram of fecal sample, but the dewormed heifers had fewer counts each month thereafter. The drylot average daily gain of the treated heifers was higher (P = 0.01) and less variable (P = 0.12) and by 29 May these animals were heavier by 11.7 kg (P = 0.10). The treated animals did not gain as fast on pasture (P = 0.20), but the gain continued to be less variable (P = 0.09). Age at puberty was not different. Number of open heifers in the treated group was 4 vs. 15% for the control group (P = 0.18). Deworming by intraruminal injection resulted in faster feedlot gains, more uniform gains during both drylot and pasture, reduced parasites and no abscess at injection sites. Key words: Anthelmintics, oxfendazole, cattle, heifers

Effects of a new sweetener, Stevia, on performance of newly weaned pigs

2000 ◽  
Vol 80 (3) ◽  
pp. 529-531 ◽  
Author(s):  
P. J. Munro ◽  
A. Lirette ◽  
D. M. Anderson ◽  
H. Y. Ju
Keyword(s):  
Key Words ◽  
Average Daily Gain ◽  
Stevia Rebaudiana ◽  
Feed Consumption ◽  
Feed Additive ◽  
Weaned Piglets ◽  
Weaned Pigs ◽  
Gain Ratio ◽  
Daily Gain

Two-hundred and nine purebred Yorkshire newly weaned piglets were used to determine the effect of the sweetener Stevia (Stevia rebaudiana) at 83.3, 167 or 334 mg kg−1 diet on feed consumption (FC), average daily gain (ADG) and feed to gain ratio (F/G) compared with treatments with 5% sucrose and no sweetener (control; C). The Stevia-containing diets did not appear to have detrimental effects on the FC and F/G ratios of the piglets when compared with C. The results indicated only a limited potential for Stevia as feed additive for piglets. Key words: Sweetener, palatability, Stevia, weaned pigs

A study of hoof cracks in grazing cattle — association of age, weight and fatness

1995 ◽  
Vol 75 (1) ◽  
pp. 25-29 ◽  
Author(s):  
L. A. Goonewardene ◽  
R. K. Hand
Keyword(s):  
Discriminant Analysis ◽  
Key Words ◽  
Average Daily Gain ◽  
Grazing Cattle ◽  
Weight Condition ◽  
Condition Score ◽  
Grazing Period ◽  
Cow Calf ◽  
Daily Gain

The data were obtained from cow calf pairs and replacement heifers grazing summer pastures in northwest Alberta. The objectives were to study the association of age, weight, condition score, cow and calf gain on the prevalence, intensity and severity of hoof (sand) cracks and to determine if such cracks affected cow and calf average daily gain. Cows that had cracks were 1.5 yr older, 43 kg heavier and fatter than cows that showed no cracks. The prevalence of sand cracks was 20–21%. Whereas 3.4% of cows and heifers which were 1 and 2 yr old had cracks, 32.4% of the 3- to 5-yr old and 47.9% of the > 5-yr-old cows had cracks (P < 0.0001). Similarly while 8.4% of the lighter (< 522 kg) cows had cracks, 32.3% of the heavier (> 522 kg) cows had cracks (P = 0.003). Discriminant analysis showed that cows with cracks were older, heavier and fatter at the end of the grazing period. Age of cow, weight and fatness had no effect on intensity or severity of cracks. The presence or absence of cracks had no effect (P > 0.05) on cow or calf gains on pasture. Key words: Hoof cracks, prevalence, intensity, severity, age, weight, fatness

SOMATOSTATIN IMMUNIZATION AND GROWTH OF LAMBS

1986 ◽  
Vol 66 (1) ◽  
pp. 77-83 ◽  
Author(s):  
B. LAARVELD ◽  
R. K. CHAPLIN ◽  
D. E. KERR
Keyword(s):  
Growth Hormone ◽  
Glucose Tolerance ◽  
Key Words ◽  
Standard Error ◽  
Average Daily Gain ◽  
Promoting Effect ◽  
Growth Promoting ◽  
Daily Gain

Twenty cross-bred lambs were used in a replicated design to measure the growth-promoting effect of immunization against somatostatin. The lambs were immunized against human alpha-globulin (control) or against somatostatin coupled to human alpha-globulin in a 1:3.75 ratio (wt/wt) (SI). The first immunization occurred when the lambs were 27 d old, followed by three additional immunizations at 2-wk intervals. Growth was monitored from first immunization until the lambs were 103 d old. At the age of 103 d the SI lambs were heavier than the control lambs (33.2 ± 1.1 (mean ± standard error) vs. 30.1 ± 1.4 kg, P < 0.05). The average daily gain after first immunization of the SI lambs was 17% greater than that of the control lambs (310 ± 10 vs. 265 ± 10 g day−1, P < 0.05). Growth hormone and insulin secretory responses to glucose and arginine, glucose tolerance and somatomedin levels in plasma were not different between groups. Somatostatin immunization increased growth in lambs, but the mechanisms through which this occurs are not clear. Key words: Somatostatin, immunization, growth, lambs

Use of triticale silage in diets for growing steers

1992 ◽  
Vol 72 (1) ◽  
pp. 181-184 ◽  
Author(s):  
D. R. ZoBell ◽  
L. A. Goonewardene ◽  
D. F. Engstrom
Keyword(s):  
Key Words ◽  
Feed Efficiency ◽  
Dry Matter ◽  
Average Daily Gain ◽  
Barley Grain ◽  
Dry Matter Intake ◽  
High Moisture ◽  
Key Words Barley ◽  
Barley Silage ◽  
Daily Gain

A total of 120 steers were fed either barley silage (BS) or triticale silage (TS) combined with barley (B) or high-moisture barley (HMB) grain, as a total mixed ration in a 2 × 2 factorial design with three replications. The barley and triticale yields were 9.8 and 8.7 t ha−1, respectively. No differences (P > 0.05) in weight, average daily gain, dry matter intake or feed efficiency were observed for treatments or interactions. TS can be used to replace BS at moderate levels in growing steer rations containing barley grain. Key words: Barley, triticale, silage, steers, performance

Sign in / Sign up

Export Citation Format

Share Document