Effect Of L-Thyroxin Hormone (T4) On Compensatory Growth In Broiler Chicks

2002 ◽  
Vol 2002 ◽  
pp. 84-84
Author(s):  
A. Hassanabadi ◽  
A. golian
Keyword(s):  
Feed Efficiency ◽  
Broiler Chickens ◽  
Compensatory Growth ◽  
Specific Dynamic Action ◽  
Abdominal Fat ◽  
Feed Restriction ◽  
Broiler Chicks ◽  
Fat Pad ◽  
Heat Increment ◽  
Maintenance Requirements

Purpose of researches in feed restriction area is improvement of feed efficiency, decrease of carcass fat content and abdominal fat pad size (Plavnik and Hurvitz,1991).Birds after early life feed restriction have less maintenance requirements due to decrease of heat increment and decrease of basal metabolic rate and specific dynamic action of food (Forsum et al.,1981).In many investigations, compensatory growth have not observed (Summers et al.,1990).It seems administration of Thyroid hormone after feed restriction can induce compensatory growth. The objective of the present study was to investigate the effect of early feed restriction and L-Thyroxin administration after early feed restriction on compensatory growth in broiler chickens.

scholarly journals Use of qualitative feed restriction as a management strategy for finishing broilers

2015 ◽  
Vol 42 (2) ◽  
pp. 151-157
Author(s):  
A. B. I. Udedibie ◽  
F. I. Peter-Nwachukwu ◽  
H. O. Obikaonu
Keyword(s):  
Weight Gain ◽  
Compensatory Growth ◽  
Abdominal Fat ◽  
Feed Restriction ◽  
Broiler Chicks ◽  
Standard Diet ◽  
Feeding Trial ◽  
Broiler Production ◽  
Significant Difference ◽  
Quality Diet

A 5-week experiment was conducted to investigate the effects of qualitative feed restriction through the use low-quality diet on finisher broiler performance, and to determine if sufficient compensatory growth can be achieved at that phase of broiler production. Seventy two (72) 4 weeks old broiler chicks of Anak strain weighing of the average 1.0kg were randomly distributed into two groups, A and B, using completely randomized design. Each group was replicated 3 times with 12 broiler chicks per replicate and each replicate housed in a pen measuring 1.5 m x 2 m. Broilers in group A were given a standard broiler finisher diet continuously for 5 weeks while broilers in group B received a low-quality cheap diet based mainly on palm kernel cake and wheat offal for the first two weeks and then placed on the standard diet for the remaining three weeks of the trial. The birds were weighed at the beginning of the trial and weekly thereafter. At the end of the feeding trial, 4 birds were randomly selected from each group, weighed, sacrificed, de-feathered, eviscerated and their internal organs as well as the abdominal fat, weighed. There was no significant difference in feed intake between the groups (P>0.05) at the end of the trial but the group on the high fibre low-quality diet consumed significantly (P<0.05) more feed during the 2 weeks. Daily body weight gain of the birds on the low-quality diet was lower than that of their counterparts in the control diets in the first 2 weeks but remarkably and progressively increased up to the end of the feeding trial. There was, however, no significant difference between the groups (P>0.05) in the final body weights. There were no significant differences in internal organ weights of the groups (P>0.05). However, abdominal fat weight was significantly (P<0.05) reduced by qualitative feed restriction. Feed cost of production (N/kg weight gain) were N348.69 and N343.78 for the control and qualitative feed restricted groups, respectively. The results have shown that sufficient compensatory growth can be achieved in broiler production the period of production is just 5 weeks.

The effect of severity and duration of early feed restriction on body weight and abdominal fat of male broiler chickens

2003 ◽  
Vol 2003 ◽  
pp. 181-181
Author(s):  
H. Jahanian Najafabadi ◽  
A. Golian ◽  
F. Eftekhari Shahroudi
Keyword(s):  
Body Weight ◽  
Body Fat ◽  
Broiler Chickens ◽  
Compensatory Growth ◽  
Abdominal Fat ◽  
Feed Restriction ◽  
Final Body Weight ◽  
Short Period ◽  
Metabolisable Energy ◽  
Diet Dilution

Early feed restriction programs designed for reducing body fat in broiler chickens rely on the phenomenon called compensatory growth to produce final body weight equal to controls and success of each feed restriction program is measured based on complete compensatory growth and the amount of body fat. Compensatory growth is defined as a recovery from a growth deficit resulting from a limited nutrient intake. Plavnik and co-workers in a series of studies showed that restricting metabolisable energy intake to providing only maintenance requirement for a short period early in the life of broilers resulted to a reduction in carcass and abdominal fats without affecting overall growth until 56 day of age. This means that there is potential to underfeed broilers for some time, without affecting weight at normal market age. The objective of this experiment was to determine the effect of severity of diet dilution (energy and protein) and duration of early feed restriction on body weight and abdominal fat of male broiler chickens.

scholarly journals Effect of dried Bacillus subtilis culture on growth, body composition and hepatic lipogenic enzyme activity in female broiler chicks

1995 ◽  
Vol 74 (4) ◽  
pp. 523-529 ◽  
Author(s):  
U. Santoso ◽  
K. Tanaka ◽  
S. Ohtani
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Enzyme Activity ◽  
Bacillus Subtilis ◽  
Feed Efficiency ◽  
Abdominal Fat ◽  
Control Group ◽  
Broiler Chicks ◽  
Lipogenic Enzyme ◽  
Treatment Groups

To investigate the effect of dried Bacillus subtilis culture on growth, body composition and hepatic lipogenic enzyme activity, female broiler chicks were fed on either no additive (control) or dried B. subtills-culture-supplemented commercial diets (215 g crude protein/kg, 12.85 MJ metabolizable energy/kg) at 10 or 20 g/kg diet for 28 d from 14 to 42 d of age. Body weight, and moisture, fat, protein and ash contents of the body were not influenced by the B. subtilis culture. Feed efficiency. N utilization, the ratio of abdominal fat or liver to body weight, acetyl-coenzyme A carboxylase (EC 6·4·1·2) activity, liver and serum cholesterol contents were significantly lower in treatment groups, while fatty acid synthetase activity and serum cholesterol concentration were not significantly different, compared with the control group. Liver triacylglycerol concentration was decreased in chicks given 20 g culture·kg diet, while serum and carcass triacylglycerol concentrations were significantly lower in treatment groups than in the control group. Serum phospholipid concentration was increased but carcass phospholipid concentration was decreased in chicks given 20 g B. subtilis/kg diet, while liver phospholipid concentration was not significantly influenced. The advantages of inclusion of B. subtilis to the broiler diet included improved feed efficiency, less abdominal fat, reduced triacylglycerol concentrations in the liver, serum and carcass and reduced cholesterol concentrations in the liver and carcass.

scholarly journals Compensatory growth in broiler chicks fed on Lemna gibba

1992 ◽  
Vol 68 (2) ◽  
pp. 329-335 ◽  
Author(s):  
A. T. Haustein ◽  
R. H. Gilman ◽  
P. W. Skillicorn ◽  
V. Guevara ◽  
F. Díaz ◽  
...  
Keyword(s):  
Weight Gain ◽  
Broiler Chickens ◽  
Compensatory Growth ◽  
Metabolizable Energy ◽  
Feed Consumption ◽  
Lemna Gibba ◽  
Broiler Chicks ◽  
Standard Diet ◽  
Feed Conversion ◽  
High Concentrations

The growth of broiler chickens on diets containing various levels of Lemna gibba was evaluated. Groups of broiler chicks were fed on diets containing 0-400 g Lemna gibba/kg for 3 weeks. These chickens were then changed to standard diets for a further 2 weeks. As the level of Lemna gibba increased, feed consumption and weight gain decreased. However, when diets were changed to the standard diet, compensatory growth was observed. In a second experiment, diets were formulated with a metabolizable energy of 5.02 MJ (1200 kcal)/kg Lemna gibba and included a finer-milled Lemna gibba. Chickens were fed on diets containing 0-300 g Lemna gibba/kg for 4 weeks. Each group was then divided into two subgroups. For the next 2 weeks one of these sub-groups was maintained on the experimental (Lemna gibba) diets (LL), while the other sub-group was changed to a standard diet (LS). Bird fed at levels above 150 g Lemna gibba/kg had decreased consumption and weight gain. These birds when changed to a standard diet tended to have increased weight gain compared with chickens continuously fed standard rations. LS birds had significantly higher weight gains and feed consumption and lower feed conversion than LL birds. In contrast to older birds, chicks fed on Lemna gibba at high concentrations showed growth retardation. When changed back to a standard diet they demonstrated normal or compensatory growth.

scholarly journals Research Note: Effect of Feed Restriction on Feed Efficiency and Incidence of Sudden Death Syndrome in Broiler Chickens

1988 ◽  
Vol 67 (7) ◽  
pp. 1102-1104 ◽  
Author(s):  
VICTORIA A. BOWES ◽  
R.J. JULIAN ◽  
STEVEN LEESON ◽  
TANYA STIRTZINGER
Keyword(s):  
Sudden Death ◽  
Feed Efficiency ◽  
Broiler Chickens ◽  
Sudden Death Syndrome ◽  
Research Note ◽  
Feed Restriction

Growth, abdominal fat content, heat production and plasma hormone levels of naked-neck and control broiler chickens

1993 ◽  
Vol 57 (03) ◽  
pp. 483-490
Author(s):  
E. Decuypere ◽  
J. Buyse ◽  
P. Mérat ◽  
J. Zoons ◽  
J. Vloeberghs
Keyword(s):  
Heat Production ◽  
Broiler Chickens ◽  
Abdominal Fat ◽  
Fat Pad ◽  
Depressing Effect ◽  
Naked Neck ◽  
Rearing Temperature ◽  
Body Weights ◽  
Lower Critical Temperature ◽  
And Control

AbstractThe depressing effect of high rearing temperature (30°C) on body weights of heterozygous naked-neck broiler chickens was apparently less pronounced than in control broiler chickens but no effect of genotype, rearing temperature or interaction on abdominal fat pad content was found. Both genotype and rearing temperature affected plasma tri-iodothyronine but not growth hormone or insulin-like growth factor 1 levels in plasma. Rearing temperature of 20°C or 30°C had effect neither on the slope of the thermoregulatory heat production curves nor on the lower critical temperature in either genotypes except at 4 weeks of age.

Subchronic Toxicity of Monensin in Broiler Chickens

1983 ◽  
Vol 20 (3) ◽  
pp. 353-359 ◽  
Author(s):  
D. D. Wagner ◽  
R. D. Furrow ◽  
B. D. Bradley
Keyword(s):  
Body Weight ◽  
Feed Efficiency ◽  
Broiler Chickens ◽  
Continuous Monitoring ◽  
Body Weight Gain ◽  
Liver Weight ◽  
Broiler Chicks ◽  
Subchronic Toxicity ◽  
Toxic Dose ◽  
Growing Period

One hundred ninety-two male broiler chicks were dosed with monensin at concentrations of 0, 121, or 242 mg/kg feed throughout the normal growing period (50 days). Body weight gain and feed efficiency were determined weekly, and cardiac muscle was examined grossly and histologically at the end of the experiment. Livers also were weighed and examined grossly. Feed intake was determined daily, allowing continuous monitoring of drug intake. No depressing effects of the drug on growth rate and efficiency were observed until after four weeks, and then were evident only in the chicks receiving the 242 mg/kg diet. Subepicardial hemorrhage and congestion occurred in 40% of the hearts from the chickens fed the high monensin dose and were nonexistent in the other treatments. There appeared to be an inverse relationship between monensin dose and liver weight. The paralytic effects previously reported from acute dosing experiments were not observed. The results show that the heart and probably the liver are sensitive indicators of monensin toxicity and that the subchronic toxic dose is less than 18 mg/kg body weight per day.

scholarly journals Penggunaan Tepung Limbah Jus Jeruk (citrus sinensis) dalam Ransum terhadap Kualitas Karkas Ayam Broiler

2017 ◽  
Vol 17 (1) ◽  
pp. 31-37
Author(s):  
Ucop Haroen
Keyword(s):  
Orange Juice ◽  
Citrus Sinensis ◽  
Broiler Chickens ◽  
Positive Control ◽  
Abdominal Fat ◽  
Negative Control ◽  
Carcass Weight ◽  
Carcass Quality ◽  
Broiler Chicks ◽  
By Products

ABSTRAK. Tujuan penelitian ini adalah mengetahui pengaruh tingkat penggunaan tepung limbah jus jeruk (Citrus sinensis) dalam ransum terhadap kualitas karkas (bobot potong, bobot karkas, persentase karkas, kolesterol karkas, bobot lemak abdomen) dan konsumsi ransum ayam broiler. Materi yang digunakan adalah ayam broiler umur satu hari unsex, strain Arbor Acres CP 707 sebanyak 200 ekor. Rancangan yang digunakan adalah Rancangan Acak Lengkap terdiri 5 perlakuan dan 4 ulangan masing-masing ulangan terdiri dari 10 ekor ayam. Perlakuan terdiri dari P0 = Ransum mengandung 0% tepung limbah jus jeruk (kontrol positif); P1 = Ransum mengandung 0% tepung limbah jus dengan penambahan basitrasin 0,02% (kontrol negatif); P2 = jeruk mengandung 5% tepung limbah jus jeruk; P3 = Ransum mengandung 10% tepung limbah jus jeruk; P4 = Ransum 15% tepung limbah jus jeruk. Variabel yang diamati adalah kualitas karkas (bobot potong, bobot karkas, persentase karkas, kolesterol karkas, lemak abdomen) dan konsumsi ransum. Hasil penelitian menunjukkan bahwa penggunaan tepung limbah jus jeruk dalam ransum nyata (P0,05) menurunkan konsumsi ransum, bobot potong, bobot karkas, kolesterol karkas dan bobot lemak abdomen, tetapi penggunaan tepung limbah jus jeruk dalam ransum tidak mempengaruhi persentase karkas. Kesimpulan yang dapat diambil dari penelitian ini adalah penggunaan tepung limbah jus jeruk (Citrus sinensis) dapat digunakan sampai taraf 5% dalam ransum ayam broiler. (The use of orange (citrus sinensis) juice by products in the ration on carcass quality of broiler chickens) ABSTRACT. This study was conducted to evaluate the effect of orange (Citrus sinensis) juice by products in rations on (carcass quality) ; weight of slaughter, carcass weight, carcasspercentages, abdominal fat weight and feed intake of broiler chicks. A total of two hundred unsexed 1 d-old chicks (Arbor Acres CP-707) used. The design used was Completely Randomized Design consisting of 5 treatments and 4 replications of each replication consisting of 10 chickens. Feed treatment consisted of P0 = 0% orange juice waste flour (positive control); P1 = 0% waste juice flour with 0.02% basitratin addition (negative control); P2 = 5% orange juice flour waste; P3 = 10% orange juice flour waste; P4 = 15% orange juice flour waste. The variables observed were carcass quality (cut weight, carcass weight, carcass percentage, carcass cholesterol, abdominal fat) and ration consumption..The results showed that the use of orange juice flour in the ration significantly influenced (P 0.05) in reducing the consumption of ration, cut weight, carcass weight, carcass cholesterol and abdominal fat weight, but the use of orange juice waste flour in the ration did not affect the percentage of carcass . As a conclusion is the use of orange juice waste flour (Citrus sinensis) can be used to a level of 5% in broiler chicken rations.

scholarly journals THE EFFECT OF FEED RESTRICTION AT THE STARTER PHASE ON PERFORMANCE OF BROILER CHICKENS

2021 ◽  
Vol 34 (1) ◽  
pp. 69-76
Author(s):  
M Tion ◽  
M. T. Orga ◽  
I. A. Adeka
Keyword(s):  
Weight Gain ◽  
Mortality Rate ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Live Weight ◽  
Feed Restriction ◽  
Control Group ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Ad Libitum

Two hundred and twenty five day old straight run broiler chicks were utilized in completely randomized design to test the effect of restricting feed intake of four groups of chicks to 92.5% 85.0%, 77.5% and 70.0% of the unrestricted (control) group in the starter phase and following adlibitum feeding for all groups in the finisher phase. The treatments were simply designated as A, B, C, D and E. The starter phase in which the restriction was carried out lasted 28 days and the finisher phase 42 days. Parameters evaluated during the starter and finisher phases included; growth rate, feed conversion ration and mortality rate. Results show gain in weight among all groups while the group fed diet B and the control had comparable weight gain at the starter phase. The percentage weight difference between the control and each of the other dietary groups was: 4.4%, 8.4%, 8.6% and 10.4% for the treatments B, C, D and E respectively. Feed gain ration improved as the level of restriction became stricter. Following ad-libitum feeding of all grops at the finisher phase, the feed restricted groups at the starter phase voraciously increased their feed intake, thus, producing comparable performance values with the unrestricted (control) group in weight gain in the 8th week of the study. Although birds in all groups averaged more than 2000g final live weight in 10weeks, significant differences exist between groups that were fed diets C, D, and E that were restricted at the starter phase, an indication that complete compensatory growth was not obtainable. Feed gain ration improved for restricted groups. Mortality rate did not show any trend attributable to levels of feed restriction. This study shows that broiler chicks fed restricted levels of balanced diet at the starter phase but later fed ad-libitum at the finisher phase could attain a finished weight of about 2000g or more at a market age of 10 weeks (70 days) with an improvement in feed gain ration.

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