scholarly journals Effect of chick weight on performance and carcass yield of broilers

2005 ◽  
Vol 57 (6) ◽  
pp. 799-804 ◽  
Author(s):  
L.J.C. Lara ◽  
N.C. Baião ◽  
S.V. Cançado ◽  
J.L. Teixeira ◽  
C.A.A. López ◽  
...  
Keyword(s):  
Feed Intake ◽  
Live Weight ◽  
Feed Consumption ◽  
Weight Class ◽  
Carcass Yield ◽  
Gain Ratio ◽  
Heavy Weight ◽  
Growing Period ◽  
Randomized Design ◽  
Light Medium

The influence of weight classes (light, medium and heavy) of Ross chicks on performance and carcass yield and main cuts, was studied using a completely randomized design with six replicates of 30 males and 30 females each. The chicks were fed on the same diets during the growing period (1-43 days). The live weight, feed intake, feed:weight gain ratio, viability, carcass yield and main cuts (breast, whole leg, wing and back) and percentages of giblets (gizzard, liver, heart and guts) were analyzed. The heavy weight class chicks were heavier (P<0.05) than the light weight class chicks, during all the growing period and showed higher feed consumption (P<0.05) than the light and medium classes chicks. No differences among weight classes chicks concerning feed:weight gain ratio, viability, carcass yield and percentage of heart, gizzard and liver were observed (P>0.05). The males showed higher carcass yield than the females of medium and heavy weight classes chicks. The whole leg yield of heavy weight class chicks was higher than the medium weight class chicks (P<0.05). Weight class influenced live weight, feed intake, carcass yield and whole leg but had no effect on feed:weight ratio, viability, breast yield and giblets percentage.

A note on the housing of intact male and female pigs together in the same pen during the growing period to bacon weight

1980 ◽  
Vol 31 (3) ◽  
pp. 321-322 ◽  
Author(s):  
R. S. Barber ◽  
R. Braude ◽  
K. G. Mitchell ◽  
Joanne Thomas
Keyword(s):  
Feed Intake ◽  
Live Weight ◽  
Intake Rate ◽  
Feeding Trial ◽  
Intact Male ◽  
Male And Female ◽  
Gain Ratio ◽  
Growing Period ◽  
Single Sex ◽  
Dressing Percentage

ABSTRACTA feeding trial was carried out, using 180 pigs, to assess the effect on performance when intact male and female pigs were housed together in the same pens from 20 to 90 kg live weight. There were no significant differences in daily feed intake, rate of growth or feed: gain ratio between pigs from mixed-sex pens and pigs from single-sex pens. Carcass measurements indicated slightly leaner carcasses for intact male pigs whether housed in separate pens or together with female pigs, while female pigs likewise had a significantly higher dressing percentage.

scholarly journals 31 Determination of Optimal Harvest Weight for Mangalica Pigs Using a Serial Harvest Approach to Measure Growth Performance and Carcass Characteristics

2020 ◽  
Vol 98 (Supplement_2) ◽  
pp. 34-34
Author(s):  
Maegan A Reeves ◽  
Courtney E Charlton ◽  
Shannon R Wilkerson ◽  
John G Rehm ◽  
Terry D Brandebourg
Keyword(s):  
Live Weight ◽  
Weight Class ◽  
Marbling Score ◽  
Randomized Design ◽  
Carcass Parameters ◽  
Body Weights ◽  
Optimal Harvest ◽  
Completely Randomized Design ◽  
Growth Trial

Abstract Mangalica pigs are a popular niche breed given their reputation for superior quality pork. However, growth and carcass parameters for this breed are poorly documented. Our objective was to better characterize optimal harvest weights for the Mangalica breed. To accomplish this, a growth trial was conducted whereby pigs (n=56) were randomly distributed across stratified harvest weights (50, 57, 68, 82, 93, 102, 127 kg) in a completely randomized design. Pigs were fed standard finisher rations with individual daily feed intakes and weekly body weights recorded for all animals. At 24h postmortem, carcasses were split and ribbed with marbling and loin eye area (LEA) measured at the 10th rib. Primal cuts were fabricated and individually weighed. Fat back was separated from the loin and weighed. As expected, live weight significantly increased across weight class (P &lt; 0.0001). ADG was similar across classes up to 82 kg live weight before steadily declining with increasing weight class (P &lt; 0.0025). Likewise, feed efficiency did not differ between classes until weights heavier than 82 kg (P &lt; 0.03). LEA significantly increased by class up to 82 kg and then plateaued as harvest weight increased further (P &lt; 0.003). Marbling score significantly increased with increasing weight class up to 102 kg where they then plateaued (p &lt; 0.04). Fat back dramatically increased across all weight classes (p &lt; 0.0001) despite negligible increases in LEA or marbling after 102 kg. Primal cut weights for the ham (P &lt; 0.0001), loin (P &lt; 0.0001), Boston butt (P &lt; 0.0001), shoulder (P &lt; 0.0001), and belly (P &lt; 0.0001) all significantly increased with increasing live weight. These data suggest an optimal harvest weight occurs between 82 to 102 kg while offering little objective justification for the current practice of harvesting Mangalica pigs at much heavier live weights.

scholarly journals Effect of dietary Black pepper (Piper nigrum) on the performance of broiler

2015 ◽  
Vol 44 (2) ◽  
pp. 120-127 ◽  
Author(s):  
EK Ndelekwute ◽  
KD Afolabi ◽  
HO Uzegbu ◽  
UL Unah ◽  
KU Amaefule
Keyword(s):  
Feed Intake ◽  
Protein Efficiency Ratio ◽  
Live Weight ◽  
Black Pepper ◽  
Nutrient Digestibility ◽  
Energy Utilization ◽  
Piper Nigrum ◽  
Efficiency Ratio ◽  
Gain Ratio ◽  
Dietary Treatments

An experiment was conducted to determine the dietary effect of different levels of ground black pepper (Piper nigrum) on growth performance and apparent nutrient digestibility of broiler chickens. There were five dietary treatments each containing 0, 0.25, 0.50, 0.75 and 1.00 % black pepper (BP) fed at both starter and finisher phases. One hundred and fifty (150) day old chicks of Arbor-acre strain were divided into five dietary groups having three replication with 10 in each. The five dietary treatments were randomly assigned into five groups. The birds were fed and watered ad libitum. At the starter phase 0.25 and 0.5 % BP improved live weight significantly (p<0.05). Feed intake was significantly (p<0.05) reduced at 1.00% BP. There were no significant differences (P>0.05) in daily gain, feed: gain ratio and protein efficiency ratio. At the finisher phase, final live weight was improved by 0.25% (p<0.05). Final live weight, feed intake, weight gain, feed: gain ratio and protein efficiency ratio were negatively affected by 0.75 and 1.0%BP. Fecal moisture was significantly (P<0.05) reduced by 0.25% while dry matter, protein and ether extract digestibility were improved by all the levels of BP. None of the BP levels improved crude fibre digestibility (p>0.05) over the control. NFE and energy utilization were improved by 0.25 and 0.5%, but significantly (p<0.05) reduced by 1.00% BP.Bang. J. Anim. Sci. 2015. 44(2): 120-127

scholarly journals Paper products as litter materials for broilers: performance, carcass defects, footpad lesions.

1969 ◽  
Vol 90 (1-2) ◽  
pp. 1-8
Author(s):  
Héctor L. Santiago ◽  
Kenneth H. Aponte ◽  
Abner A. Rodríguez ◽  
José A. Orama ◽  
Mireille Argüelles
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Small Animal ◽  
White Paper ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Recycled Paper ◽  
Carcass Yield ◽  
Randomized Design ◽  
Moisture Percentage

Recycled paper products were evaluated as litter material for broilers; parameters were growth performance, carcass quality, and footpad problems. One hundred sixty-eight broiler chicks were raised to market age (42 d) in an open-sided poultry house located at the Lajas Agricultural Experiment Station Small Animal Research Farm. Birds were assigned to 12 floor pens bedded with either rice hulls (RH) as control; a 50:50 mix of RH and shredded white paper (SWP); or a 50:50 mix of RH and shredded newspaper (SNP) according to a completely randomized design replicated four times. Traits measured were body weight, feed intake, feed conversion, carcass yield, breast blister score, footpad burn score, and mortality. Litter moisture percentage was assessed at 14, 28, and 42 d of age. Litter material had no influence on body weight, breast blister score, or bird mortality. However, birds raised on SWP had lower feed intake and higher body weight than those raised on RH and SNP. No significant differences in feed conversion were observed among treatments from 7 to 28 d of age. At 35 and 42 d, birds raised in SWP had significantly lower feed conversion than controls, whereas feed conversion of birds raised in SNP did not differ from that of the other treatments. No differences were found for carcass yield among treatments. At all sampling times, litter moisture percentage was significantly higher in SNP than in the control. No litter caking problems were observed in any of the treatments. Significant differences in footpad burn scores were observed among all treatments, with birds raised on SNP having higher scores (severer lesions), than those on SWP and RH.The results suggest that recycled paper products could be an excellent alternative bedding material for broilers. The use of SWP as litter appears to improve broiler performance and reduce the incidence of footpad problems.

The joint use of enzyme drugs and lecithin in the rearing of broiler chickens

2021 ◽  
pp. 41-46
Author(s):  
B. S. Kaloev ◽  
M. O. Ibragimov ◽  
M. M. Shagaipov
Keyword(s):  
Broiler Chickens ◽  
Live Weight ◽  
Biologically Active ◽  
Feed Consumption ◽  
Control Group ◽  
Growing Period ◽  
Production Experiment ◽  
Productive Traits ◽  
Positive Effect ◽  
Experimental Group

The reliability of the results obtained in scientific and economic experiments on the study of the effectiveness of the use of various feed components, including biologically active substances in the rearing of broilers needs to be confi rmed in production conditions. The purpose of the research was to study the joint use of enzyme drugs and lecithin in the rearing of broiler chickens. The results of production experiment on the study of the effectiveness of the joint inclusion of enzyme drugs Sunzyme and Sunfyse 5000 as well as lecithin in the diet of broiler chickens of the cross Ross-308 have been presented in the article. Production tests have been carried out under the conditions of the breeding farm “Achkhoy– Martanovsky” in the Chechen Republic. The duration of the experiment was 45 days. For research on the principle of analog groups two groups have been formed: a control group and an experimental group of 1000 heads in each. The broilers of the control group have been fed compound feed prepared in accordance with the growing period and consisting mainly of grain components of local production. The broilers of the experimental group have been fed the same compound feed, but with the addition of two enzyme drugs Sanzyme and Sanfyse 5000 (100 g/t of feed) as well as lecithin (10 g/kg of feed). The results of the production experiment fully confi rmed the data obtained in the scientific and economic experiment. The positive effect of the joint use of the studied enzyme drugs and lecithin has been manifested in all the studied productive traits. In particular, the increase in live weight of broilers increased by 12,1 %, slaughter yield by 3,5 %, the yield of carcasses of the 1st category by 3,0 %. The main economic indicators also found their confirmation: feed consumption per unit of growth decreased by 11,7 %, additional profit was received in the amount of 27308,2 rubles, the level of profitability of broiler rearing increased by 18,4 %.

scholarly journals Growth performance of local and genetically improved chicken of Bangladesh

2018 ◽  
Vol 47 (2) ◽  
pp. 76-84
Author(s):  
A Akhter ◽  
SC Das ◽  
MS Hasan ◽  
T Akter ◽  
M Sultana ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Growth Parameters ◽  
Live Weight ◽  
Feed Consumption ◽  
Breast Meat ◽  
Indigenous Chicken ◽  
Free Range ◽  
Growing Period ◽  
Genetically Improved

The experiment was conducted to compare the growth performance among four genotypes of indigenous chicken namely Non-descriptive Native (ND), genetically Improved Native (IN), Hilly (HC) and Naked Neck (NN) of Bangladesh under free-range rearing system.  A total of 288 day old chicks (DOC) from four genotypes were divided into four treatments having eight replications of each for a period of 12 weeks under free-range system with supplementation of commercial broiler diet. During first 4 weeks, all chicks were kept together, whereas chicks of ND was brooded in the same room but separated by a partition. At 5 weeks of age chicks were randomly distributed to the selected farmers. Growth parameters were recorded to determine the comparative growth performance among four genotypes of chicken. The highest body weight (1110.76 g/bird) was achieved by HC, followed by IN (900.63 g/bird) and NN (831.13 g/bird) at 12 weeks of age. The lowest body weight (734.13 g/bird) however was found in ND chicken. During the growing period under free range rearing (5-12 weeks), HC group consumed the highest amount of feed (2697.02 g/bird) with an average FCR of 3.06 while the lowest feed consumption (2666.13 g/bird) with the highest FCR of 4.90 was observed in ND. IN consumed (2674.63 g/bird) feed with an average FCR of 3.92 and BLRI improved NN consumed (2668.13 g/bird) feed with an average FCR of 4.19. Live weight gains in all the four genotypes of indigenous chicken were changed almost in a similar pattern. Significant differences were observed in live weight, dressing percentage, breast meat, drumstick, thigh meat among the four genotypes of chicken. The HC was superior to other genotypes of indigenous chicken including ND in terms of growth performance, meat yield characteristics and net returns. Bang. J. Anim. Sci. 2018. 47 (2):76-84

scholarly journals Effect of stocking density on performance, carcass yield, productivity, and bone development in broiler chickens Cobb 500®

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2705
Author(s):  
Cleoneide Dos Santos Henrique ◽  
Andréia Fróes Galuci Oliveira ◽  
Thales Silva Ferreira ◽  
Eduardo Santos Silva ◽  
Bruna Finotti Fonseca Reis de Mello ◽  
...  
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Bone Development ◽  
Stocking Density ◽  
Live Weight ◽  
Feed Conversion ◽  
Randomized Design ◽  
Total Phase ◽  
Completely Randomized Design

This study aimed to assess the effect of stocking density of 10, 12, 14, and 16 birds m?2 on performance, carcass and cut yields, productivity, and bone development of broiler chickens Cobb 500®. The experimental design was completely randomized design with four treatments (stocking densities) and four replications. The assessments were performed weekly at 1, 7, 14, 21, 28, 35, and 42 days. The best live weight result was found at a density of 10 birds m?2 in the period from 1 to 7 days. No effect of density was observed on feed intake and weight gain. From 1 to 14 days, the best live weights were found at densities of 10, 12, and 14 birds m?2, in addition to a higher feed intake at densities of 10 and 12 birds m?2. Weight gain was better at a density of 10 birds m?2, showing no differences from densities of 12 and 14 birds m?2. In the period from 1 to 21 days, live weight and weight gain were higher at densities of 10, 12, and 14 birds m?2. The highest feed intake was observed at a density of 10 birds m?2, which showed no difference from the density of 14 birds m?2. A difference (P < 0.05) was observed for live weight, weight gain, and feed intake of animals reared at densities of 10, 12, and 14 birds m?2 for the phases from 1 to 35 days and the total phase from 1 to 42 days of bird age when compared to 16 birds m?2, which presented lower performance. However, feed conversion of 1-7, 1-14, 1-21, 1-35, and 1-42 days and carcass and cut characteristics showed no significant differences for all treatments. On the other hand, productivity was higher in the treatments with 14 and 16 birds m?2, but without difference between each other. No interaction (P > 0.05) was observed between stocking density and age for the assessed bone parameters. Similarly, no difference (P > 0.05) was observed for bone development of broiler chickens reared at different stocking densities for the studied parameters. Thus, the increased density of 10 or 12 birds m?2 to 14 birds m?2 has no influence on zootechnical performance, carcass and cut yields, and bone development, but increases broiler chicken productivity reared in a conventional shed without air conditioning.

The feed intake of grazing cattle. I. Feed intake of dairy cows on strip and free grazing

1960 ◽  
Vol 2 (2) ◽  
pp. 131-139 ◽  
Author(s):  
W. Holmes ◽  
H. El Sayed Osman
Keyword(s):  
Feed Intake ◽  
Live Weight ◽  
Feed Consumption ◽  
Feed Digestibility ◽  
Significant Difference ◽  
Milk Cows ◽  
Faecal Nitrogen ◽  
Free Grazing ◽  
The Difference ◽  
Strip Grazing

1. Eight Ayrshire milk cows were grazed for four 3-week periods from July to October 1957 in a balanced sequence on two strip-grazed and two free-grazed paddocks, each of two acres. Feed intake and digestibility were estimated by the chromic-oxide faecal-nitrogen method.2. There was no significant difference in average feed digestibility between the treatments. Free grazing cows ate 30·4 lb. dry matter per day and strip grazing cows 28·9 lb. The difference was just significant (p<0·05). There was no significant difference in milk yield, live-weight or live-weight gain per cow.3. Total feed output per acre was 11% greater on strip grazing when measured by utilised starch equivalent but only 1 % greater when measured by estimated feed consumption. The data suggest that strip-grazed cattle needed less energy for grazing.4. The results are discussed with reference to their accuracy, their implications on grazing management and their correspondence with estimates of food requirements based on indoor feeding standards.

scholarly journals Paprika and/or marigold extracts improve productivity and yolk color in egg-laying quails

2020 ◽  
Vol 21 ◽  
Author(s):  
Higor Castro Oliveira ◽  
Maria Cristina de Oliveira ◽  
Uilcimar Martins Arantes ◽  
Early Theodoro Alves de Argyri
Keyword(s):  
Feed Intake ◽  
Specific Weight ◽  
Egg Laying ◽  
Egg Mass ◽  
Sensorial Analysis ◽  
Gain Ratio ◽  
Japanese Quails ◽  
Randomized Design ◽  
Completely Randomized Design

Abstract This study was conducted to evaluate the effects of paprika and marigold extracts on the productivity of Japanese quails, quality and sensorial analysis of eggs. Japanese quails were allocated in a completely randomized design and factorial arrangement 2 × 2 + 1, and four replicates. Diets were formulated based on: 1) corn (control), and 2) sorghum (S) without pigments, 3) S + 0.06% paprika extract (PE), 4) S + 0.01% marigold extract (ME), and 5) S + 0.06% PE and 0.01% ME. There was no effect of the control and factorial interaction on feed intake, egg-laying rate, or egg mass; however, the feed: gain ratio was lower among quail fed with diets containing both extracts. The inclusion of PE and ME in the diets improved the feed: gain ratio and yolk color; the inclusion of PE reduced the feed intake and specific weight of the eggs. Compared to the control, treatments based on sorghum or sorghum + PE led to a difference in egg taste and yolk color in the sensorial visit the website to get the how analysis. It was concluded that paprika and marigold extracts could be included in quail diets because of improvements in feed: gain ratio and yolk color.

scholarly journals The effect of fermented coconut waste to the growth of catfish (ClariasSp)

2017 ◽  
Vol 1 (1) ◽  
pp. 21
Author(s):  
Farizaldi, Novirman Jamarun, Jafrinur, Yeti Marlida
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Study Design ◽  
Feed Intake ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Catfish Diet

This study aimed to determine the effect of fermented coconut waste on the growth of catfish (Clariassp). The study design used was completely randomized design (CRD) with 4 treatments and 5 replications. Treatments included P0 (0% of fermented coconut waste in the feed), P1 (10% of fermented coconut waste in the feed), P2 (20% of fermented coconut waste in feed), and P3 (30% of fermented coconut waste in the feed). The observed variables were feed consumption, absolute body weight, feed conversion and survival rate. The results showed that using fermented coconut waste for catfish diet significantly (P <0.05) affected feed intake, absolute body weight, feed conversion and live survival of the fish. The conclusion of this research was using 20% of fermented coconut waste in the diet can increase the growth of catfish (Clariassp).

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