THE RESPONSE OF TURKEY BROILERS TO THE USE OF FLAVOMYCIN AS A GROWTH PROMOTER

1990 ◽  
Vol 70 (3) ◽  
pp. 937-941
Author(s):  
F. G. PROUDFOOT ◽  
E. D. JACKSON ◽  
H. W. HULAN
Keyword(s):  
Body Weight ◽  
Key Words ◽  
Treatment Effects ◽  
Health Management ◽  
Carcass Composition ◽  
Growth Promoter ◽  
Economic Gain ◽  
Feed Conversion ◽  
Turkey Poults ◽  
Body Weights

Three thousand six hundred turkey poults were used to determine the effects of flavomycin as a growth promoter when incorporated in feed at levels of 0, 2, 4, 6, 8, 10, 12 and 14 mg kg−1. There were no significant (P > 0.05) treatment effects on mortality, carcass composition and monetary indices (economic gain) at 28, 56 and 84 d of age or upon body weights at 56 and 84 d of age. A significant (P < 0.001) effect for body weight was demonstrated at 28 d but was attributed to the lighter weight of poults fed the 6 mg flavomycin kg−1 diet. Similarly, feed conversion up to 28 d was significantly (P <0.001) improved for some treatment levels but this did not persist to 56 or 84 d of age. It is concluded that flavomycin is not effective as a growth promoter under all circumstances of turkey production, particularly those where optimum diets are coupled with modern housing and health management. Key words: Flavomycin, bambermycins, growth promoter, turkey broilers

scholarly journals The Effects of Feed Color on Broiler Performance between Day 1 and 21

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1511
Author(s):  
Joseph P. Gulizia ◽  
Kevin M. Downs
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Treatment Effects ◽  
Body Weight Gain ◽  
Experimental Period ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Broiler Performance ◽  
Average Body ◽  
Average Body Weight

Two trials were conducted to determine feed color effects on broiler performance. A completely randomized design was used. Trial 1 included four treatments: control (complete broiler starter diet), red, green, and blue; and Trial 2 included four treatments: control, orange, yellow, and purple. Each trial had 4 treatments with 4 replicates (60 birds/treatment) fed to 240 male Cobb 500 broilers during a 21 d grow out. Data were analyzed using the GLM procedure. In Trial 1, there were no treatment effects on average body weight, body weight gain, and feed consumption (p > 0.05). Adjusted feed conversion for control (1.23) was less than red (1.27; p = 0.001) and green (1.26; p = 0.009), with blue (1.25; p = 0.056) tending to be different during the experimental period. In Trial 2, there were no treatment effects on average body weight, feed consumption, and adjusted feed conversion during this study (p > 0.05). Body weight gain between d 1 to 14 for purple (490.78 g/bird) was more than orange (467 g/bird; p = 0.013) and yellow (461 g/bird; p= 0.004), with control (474 g/bird; p = 0.052) tending to be different. Results indicate that these feed colors had some, albeit limited, influence on broiler performance parameters.

scholarly journals EFFECTS OF SLAUGHTER’ AGE ON GROWTH PERFORMANCE, CARCASS AND NON-CARCASS COMPONENTS TRAITS OF BERBER BREED LAMBS

2021 ◽  
Vol 52 (6) ◽  
pp. 1401-1407
Author(s):  
S. Atroun ◽  
C. Aissaoui ◽  
S. Smeti ◽  
N. Atti
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Average Daily Gain ◽  
Carcass Composition ◽  
Carcass Yield ◽  
Body Weights ◽  
Slaughter Age ◽  
Daily Gain

The objective of this work was to study the lamb’s growth, the carcass yield and composition and the importance of main organs of Berber lambs slaughtered at 4 or 6 months. The study concerned 40 lambs reared under motherhood. Lambs of the first group were slaughtered at the age of 4 months (4M) and the second at 6 months (6M). Slaughter body weights (BW), hot and cold carcass weights and organs were recorded. The carcass was cut out and dissected. The average BW at birth was 4.14 + 0.506 kg while the BW at slaughter was 22.86 kg + 3.40 and 31.51 + 3.50 kg for 4M and 6M groups, respectively. The average daily gain were 172 and 164g for 4M and 6M groups, respectively. Therefore, during 2months the lambs of 6M group gained 8.67 kg in BW. The carcasses were heavier for 6M than 4M. The carcass commercial yields were 42% and 45% for 4M and 6M groups, respectively, resulting in 4.1 kg gain of meat during 2 months. The tissular (muscle, fat and bone) and the regional (leg, shoulder …) carcass composition did not differ among groups. All organs were heavier for 6M than 4M; however, their proportion in the empty body weight were variables. The BWand carcass gain at six months are encouraging to prolong the lamb’s slaughter age without carcass composition difference given the similar fat proportion in the carcass of both groups.

Long R3 insulin-like growth factor-I (IGF-I) infusion stimulates organ growth but reduces plasma IGF-I, IGF-II and IGF binding protein concentrations in the guinea pig

1995 ◽  
Vol 146 (2) ◽  
pp. 247-253 ◽  
Author(s):  
M A Conlon ◽  
F M Tomas ◽  
P C Owens ◽  
J C Wallace ◽  
G S Howarth ◽  
...  
Keyword(s):  
Body Weight ◽  
Guinea Pig ◽  
Body Weight Gain ◽  
Binding Protein ◽  
Carcass Composition ◽  
Feed Conversion ◽  
Igf Binding Proteins ◽  
Igf I ◽  
Igf Binding ◽  
Igf Binding Protein

Abstract We have tested whether an animal with substantial amounts of both IGF-I and IGF-II in circulation, such as the guinea pig, would respond to chronic IGF infusion in the same manner as the adult rat, which has negligible amounts of IGF-II in blood. Female guinea pigs of 350 g body weight were continuously infused for 7 days with recombinant guinea pig IGF-I or -II (120 or 360 μg/day) or long R3 IGF-I (LR3IGF-I) (120 μg/day), an analogue which has much reduced affinities for IGF binding proteins. IGF-I or IGF-II infusion led to substantial increases in plasma IGF-I or IGF-II respectively in comparison with vehicle-infused animals. Nevertheless, body weight gain, feed intake, feed conversion efficiency and carcass composition were not significantly affected by any treatment (significance was deemed to be P<0·05). Amongst the tissues examined only the fractional weight (g/kg body weight) of the adrenals was increased, and that only by the higher dose (360 μg/day) of IGF-I. However, the fractional weight of adrenals, gut, kidneys and spleen were significantly increased by LR3IGF-I, but again overall growth was not stimulated. A possible explanation for the lack of IGF-I effects is that total circulating IGF concentrations were not increased by these treatments. IGF-II significantly raised total IGF concentrations at the higher dose only. Plasma IGF-I was reduced by IGF-II infusion, as was plasma IGF-II by IGF-I infusion. LR3IGF-I treatment lowered both plasma IGF-I and IGF-II concentrations, a response probably related to a reduction in total plasma IGF binding protein (IGFBP), especially IGFBP-3, concentrations. We conclude that although the guinea pig is responsive to IGF treatment, the effects differ markedly from those elicited in rats. Journal of Endocrinology (1995) 146, 247–253

THE EFFECT OF TOE CLIPPING AND REDUCED FEEDING TIME ON THE PERFORMANCE OF BROILER CHICKENS

1982 ◽  
Vol 62 (3) ◽  
pp. 971-974 ◽  
Author(s):  
F. G. PROUDFOOT ◽  
H. W. HULAN
Keyword(s):  
Key Words ◽  
Broiler Chickens ◽  
Female Body ◽  
Feed Restriction ◽  
Feeding Time ◽  
Feed Conversion ◽  
Beneficial Effects ◽  
Body Weights

An experiment involving 2000 broiler chickens grown to 49 days was designed to measure the performance of birds subjected to detoeing and restricting feeding time to 16 h per day commencing at 21, 28, 35 and 42 days. No beneficial effects resulted from detoeing. Body weights were reduced for males at 21, 28, 35, 42 and 49 days; however, these differences were significant (P < 0.05) only at 21, 28 and 35 days. Female body weights were reduced (P < 0.01) only at 21 days. Detoeing had no significant effect (P = 0.05) on carcass grades, mortality, or monetary returns. Although feed conversion up to 21 days tended to be enhanced, this advantage did not persist to 49 days. Reducing feeding time to 16 h/day had no significant (P = 0.05) effect on mortality, body weights, feed conversion, percent Grade A carcasses or monetary returns. Key words: Broiler chickens, toe clipping, feed restriction, feed denial

scholarly journals Influence of various levels of valin in the mixed fodder on the carcass composition of quails

2017 ◽  
Vol 19 (79) ◽  
Author(s):  
M. Sychov ◽  
T. Golubeva ◽  
V. Kovalchuk ◽  
Y. Poznyakovskiy
Keyword(s):  
Body Weight ◽  
Large Body ◽  
Carcass Composition ◽  
Feed Additives ◽  
The Body ◽  
Control Group ◽  
Feed Conversion ◽  
Experimental Scheme ◽  
National University ◽  
Effective Level

The article presents the expediency of using valine in the feeding of growing quails of meat direction of productivity. The studies were conducted in the conditions of research laboratory of feed additives of National University of Life and Environmental Sciences of Ukraine. The experiment was conducted with growing Pharaoh quails. It was selected 500 daily quails. Birds were placed in 20 cages with 25 heads in each. In the formation of analog groups, the body weight of the birds was taken into account. Quails were fed full-fledged mixed fodder, which was balanced by energy and other nutrients. The feed for the quails of the control group contained the natural level of valine, and the experimental groups – additionally L-valine according to the experimental scheme. Observed a relationship between the level of valine in feed and feed conversion (R2 = 0.7359). The most effective level of valine in mixed fodder for quail, which is grown for meat, to obtain a sufficiently large body weight with a low level of feed intake per unit of growth is at 1– 21-day age – 1.68% and at 22– 35-day age – 1.23%.

scholarly journals Effect of the dietary inclusion of the growth promoter avoparcin on the performance and carcass characteristics of growing goat kids

2018 ◽  
Vol 50 (1) ◽  
pp. 25
Author(s):  
V. A. BABIDIS (Β. Μ. ΜΠΑΜΠΙΔΗΣ) ◽  
P. FLOROU-PANERI (Π. ΦΛΩΡΟΥ-ΠΑΝΕΡΗ) ◽  
D. KUFIDIS (Δ. ΚΟΥΦΙΔΗΣ) ◽  
A. B. SPAIS (A.B. ΣΠΑΗΣ)
Keyword(s):  
Body Weight ◽  
Body Weight Gain ◽  
The Body ◽  
Feed Consumption ◽  
Control Group ◽  
Spleen Weight ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Daily Consumption ◽  
Indigenous Goat

A trial was conducted with 32 indigenous goat kids (Capra prisca) 8,5 weeks old to examine the effectiveness of dietary avoparcin as growth promoting factor. The kids were randomly allocated into two groups (control- and avoparcin group with initial mean body weight of 11,61 ±1,16 kg and 11,57±1,47 kg, respectively) comprising of 16 kids (8 male and 8 female) each. For a period of 12 weeks, kids in the control group were given lucerne (alfalfa) hay (mean daily consumption 170 g/head) and an appropriate compound diet (given ad libitum), while kids in the avoparcin group were fed the same diet except that the compound diet was supplemented with avoparcin (20 mg/kg). Avoparcin supplementation significantly (P<0.05) improved final mean body weight by 10.57% (19.24 ± 2.33 kg vs. 17.40 ± 2.30 kg), body weight gain (BWG) by 32.30% (7.66 ± 1.42 kg vs. 5.79 ± 1.74 kg), mean daily feed consumption in dry matter basis (DM) by 14.24% (551.80 ± 31.60 g DM vs. 483.02 ± 28.94 g DM), feed conversion ratio by 13.62% (6.09 ± 0.47 kg DM consumption/kg BWG vs. 7.05 ± 0.56 kg DM consumption/kg BWG) and carcass weight by 14.86% (11.44 ± 1.48 kg vs. 9.96 ± 1.76 kg). Moreover, no significant differences (P>0.05) were noticed neither in carcass yield and carcass chemical composition nor in percentages of small intestine-, major omentum-, lung-,heart-, liver- and spleen weight in the body weight.

Comparison of Condor and CDC Richard hulless barleys for broiler chicks

1995 ◽  
Vol 75 (3) ◽  
pp. 489-491
Author(s):  
Niu Zhi-Yuan ◽  
G. L. Campbell ◽  
R. S. Bhatty ◽  
B. G. Rossnagel
Keyword(s):  
Body Weight ◽  
Key Words ◽  
Crude Protein ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Protein Utilization ◽  
Hulless Barley

Five Condor and five CDC Richard hulless barley samples, representing a range in crude protein (12.4–15.3%), were fed to broiler chicks in β-glucanase-supplemented diets formulated to be moderately limiting in crude protein (18% CP). The barley varieties had comparable mean CP (Condor, 13.8%; CDC Richard, 14.1%) and starch (Condor, 56.4%; CDC Richard, 57.5%), although Condor was somewhat higher in β-glucan content (3.5 vs. 2.8%; P < 0.10). There were no differences (P > 0.05) in body weight or feed conversion among chicks fed the two barleys, indicating that protein utilization was similar in broiler chicks fed Condor and those fed CDC Richard hulless barleys. Key words: Hulless barley, chicks, protein, β-glucanase

scholarly journals INFLUENCE OF SUPPLEMENTARY CELLULOLYTIC ENZYMES (DRISELASE) ON THE PERFORMANCE OF BROILERS FED RATIONS CONTAINING RAPESEED MEAL

1982 ◽  
Vol 62 (1) ◽  
pp. 269-273 ◽  
Author(s):  
Y. K. GOH ◽  
A. SHIRES ◽  
A. R. ROBBLEE ◽  
D. R. CLANDININ
Keyword(s):  
Body Weight ◽  
Key Words ◽  
Soybean Meal ◽  
Rapeseed Meal ◽  
The Other ◽  
Partial Replacement ◽  
Cellulolytic Enzymes ◽  
Feed Conversion

Two experiments were conducted to study the effects of supplementing broiler rations with a multiple cellulolytic enzymes system (Driselase) on the performance of chicks raised to 4 wk of age (exp. 1) and to 8 wk of age (exp. 2). Four broiler rations unsupplemented or supplemented with 0.03% Driselase were used in the study. One of the rations was based on soybean meal and wheat while the other three contained 20% rapeseed meal (produced from Regent, Candle and Turret cultivars of rapeseed) as a partial replacement for soybean meal. The results obtained in both experiments indicated a lack of response in body weight and feed conversion of the chicks to Driselase supplementation. In both experiments, the chicks receiving the rations containing rapeseed meal showed varying degrees of thyroid enlargement depending on the cultivar of rapeseed from which the meal was produced, with Turret meal causing the greatest increase in thyroid size. Key words: Driselase, cellulolytic enzymes, broilers, performance, rapeseed meal

scholarly journals Pengaruh Pengaturan Waktu Pemberian Air Minum yang Berbeda Temperatur terhadap Performan Ayam Petelur Periode Grower

2017 ◽  
Vol 9 (2) ◽  
pp. 77
Author(s):  
Dede Risnajati
Keyword(s):  
Drinking Water ◽  
Body Weight ◽  
Water Temperature ◽  
Key Words ◽  
Laying Hens ◽  
Feed Conversion ◽  
Growing Period ◽  
Randomized Design ◽  
Two Factors ◽  
Water Provision

<p>The purpose of this study was to investigate the effect of interaction between drinking<br />water provision and drinking water temperature on performance of growing period laying hens. The research used Complete Randomized Design factorial pattern with two factors. The first factor consisted of five times of drinking water provision, ie, without restriction (WO), reduction in the provision of drinking water 2 hours (W1), 3 hours (W2), 4 hours (W3), and 5 hours per day (W4). The second factor consisted of two drinking water temperatures: 25-27 °C (T0) and 21-23 °C (T1). Each treatment was repeated 3 times and each replication consisted of five chickens. Data were analyzed with analysis of variance and continued with Duncan’s test. There was interaction between drinking water provision and drinking water temperature on body weight and feed conversion. The 2-hour reduction of drinking water provision per day with water temperature 21-23 °C produced the best performance of laying hens in growing period.</p><p>Key words: laying hens, performance, grower, drinking water</p>

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