Effect of feed additives on live weight gain of broiler chickens

Author(s):  
Ellada K. Papunidi ◽  
◽  
Leysan V. Abdullina ◽  
Albina V. Potapova ◽  
Svetlana N. Savdur ◽  
...  

The research was aimed at studying the efficiency of using functional feed additives based on fermented brewer's grains with vegetative filler and an adsorbent in combined feeds for broiler chickens. The use of the developed biological product resulted in increasing the live weight in the second group of chickens by 8.0 %, the average daily live weight gain – by 8.2 %, while reducing the feed used per unit of the product by 8.0 %. The results of analyzing the contents of the microflora of the caeca in the intestine showed a reduction of the common microbial number in the experimental group of chickens from 2x109 to 3x107 and an increase in the number of lactobacilli from 1x106 to 6x107. Therefore, the efficiency of the composite biological product in feeding broiler chickens has been proven.


2020 ◽  
Vol 194 (3) ◽  
pp. 45-48
Author(s):  
M. Apaleyeva

Abstract. One of the urgent tasks in modern poultry farming is the search and testing of new, cheap and at the same time environmentally friendly feed additives that positively affect the productivity and health of poultry [1, p. 105]. Such additives include acidifiers, consisting of complexes of organic acids and their salts. The range of organic acids used in our country is large: formic, propionic, acetic, benzoic, butyric, sorbic, fumaric, succinic, citric, ascorbic, tartaric acids and others, as well as their salts [2, p. 81. 3, p. 28. Scientific novelty. In the conditions of the “Amur Broiler” poultry farm, studies were conducted on the effectiveness of using the Acidomyx AFG organic acid. The aim of the research was to determine the rational dosage of the medication based on Acidomyx AFG organic acids, as well as to assess its effect on meat productivity and the livability of broiler chickens. Methodology and research methods. The productive effect of Acidomyx AFG was assessed by the following indicators: live weight at the age of 7, 15, 25, 35, and 41 days old; daily average increase in chickens; livestock livability, feed costs per 1 kg of live weight gain. Results. Studies have shown that the most productive was the use of the studied medication at a dosage of 0.3 % in the starter period, 0.2 % in periods of growth and finish. The effectiveness of the medication turned out to be the best in comparison with the control in terms of live weight by 15.8 %, average daily gain in chickens by 16.1 %, in terms of livestock livability by 8.9 %, and in feed costs per 1 kg of live weight gain by 0.03 kg.


Author(s):  
S. Alexandrova ◽  
A. Bakharev ◽  
O. Simonov ◽  
E. Renev ◽  
S. Shabaldin ◽  
...  

Under the environments of the Tyumen region a scientific and research work has been carried out, including an assessment of the influence of antimicrobial substances: colloidal silver, antibiotics and organic acids on the body of broiler chickens. The purpose of the work was to evaluate the influence of antimicrobial substances on the productivity of broiler chickens. The research and laboratory experiment has been carried out in the laboratory of the Northern Trans-Ural Scientific and Research Institute of the Tyumen Scientific Center of Siberian Branch of Russian Academy of Sciences on chickens of the cross ArborAykrs+. Chickens at the daily age have been distributed according to the principle of balanced groups-analogues. The period of chicken rearing was 35 days, during the same period the analysis of the studied antimicrobial substances has been performed. The composition of the test substances was included colloidal silver 10 μg/l, antibiotics (Pulsoceril, Enronite) and the mixture of organic acids (Agrofeed) at the dose of 0,4 ml/l. The results have shown that chickens that have been watered colloidal silver had the gain of live weight for the period of rearing 1850,94 g or lower than chickens in the control group. At the same time, broiler chickens with watering of antibiotics and organic acids exceeded the control group’s analogues. For example chickens of the 1st experimental group where colloidal silver has been watered at the dose of 10 mcg/l every day had the live weight gain during the rearing period lower by 15,56 g and the average daily live weight gain of 0,45 g than chickens of the control group. At the same time broilers of the 2nd experimental group (with antibiotics) and the 3rd experimental group (with organic acids) had the higher gain of live weight during the rearing period by 56,61 and 95,23 g, respectively, compared to the control group. The average daily gain diff erences were 1,62 and 2,72 g. Indicators of morphological and biochemical composition of blood of experimental groups of broiler chickens indicated that they were within the limits of the corresponding physiological norms. At the same time, there were some changes on the part of both red and white blood, which seems to be related not only to the body’s response to feeding, but also to the biochemical processes within the body.


Author(s):  
M. I. Holubiev ◽  
T. A. Holubieva

The studies were conducted in growing quail meat production at the age of 1–35 days in the research laboratory of feed additives National University of Life and Environmental Sciences of Ukraine. The research goal was to establish effective levels of additional introduction of Selenium in fodder for growing quail by comparing them to some zoo–technical indicators. Five groups of 100 quails were formed.  The quails of the Control Group were fed a standard diet without the inclusion of additional Selenium. The quails of the trial groups received a standard diet supplemented with selenium: group 2 – 0.1 mg, group 3 – 0.2 mg, group 4 – 0.3 mg and group 5 – 0.4 mg / kg feed. For a determine the effect of selenium on the productive qualities of quails was conducted taking into account their of preservation, feed intake, body weight is determined and calculated feed cost per 1 g of live weight gain. During the study established that the level of preservation quails high enough in the experimental groups, the best body weight was observed in animals consuming an additional 0.4 mg of Se, and the lowest feed consumption per 1 kg of growth – from poultry which were fed 0.2 mg Se. Thus, investigated of trace elements in the indicated doses increases the productivity of quails and decrease feed costs per 1 kg of live weight gain


Author(s):  
V. A. Reimer ◽  
Z. N. Alekseeva ◽  
I. Yu. Klemeshova ◽  
E. V. Tarabanova ◽  
G. V. Kovalev

The authors studied productivity and product quality under industrial poultry production technology. The productivity of broiler chickens of Ross-308 and Hubbard Iza-F-15 was different during floor rearing. Broiler chickens of Ross-308 outperformed Iza-F-15 chickens in body weight and average daily gain. The live weight at the slaughter of Ross-308 chickens was 2,360 g. The live weight of the chickens of Iza-F-15 was 2088 g. The conversion of feed to produce was higher in the chickens of Ross-308 cross by 0,06 kg compared with the chickens of Iza-F-15 and amounted to 1.64 kg per 1 kg of live weight gain. The survival rate was high for Ross-308 chickens (95.8%). The safety of the flock of the Izu-F-15 chickens was 2.2 per cent lower and was 93.6 per cent. Slaughter yield in the chickens cross Ross-308 is higher than in the group of chickens cross Iza-F-15. Meat quality is also better in Ross-308 chickens. Growing broiler chickens of Ross-308 cross for meat under industrial technology allowed to get more profit compared to the use of poultry of Iza-F-15 cross. At the exact cost of feed, 1 kg of live weight gain was 7.1 roubles, and per 1 head of chick was 19.1 roubles. The profitability level is also 12.6% higher for the broiler chickens of Ross-308 cross. The cumulative indicator the European productivity index is higher for chickens of Ross-308 breed, compared with chickens of Iza-F-15 breed on 56 units. This index was 341 and 285, respectively.


2019 ◽  
Vol 6 (16) ◽  
pp. 121
Author(s):  
Ronald Herve Santos Ricalde ◽  
Luis Sarmiento Franco ◽  
Francisco Lopez Santiz ◽  
Carlos Sandoval Castro

The aim of this study was to evaluated the effect of soaked Mucuna pruriens (MP) seeds in tap water, acid or alkaline solution + cooking on its L-Dopa content and on the productive performance of broiler chickens. Ninety-six sexed chicks aged 21-days old with an initial live weight of 720 ± 80 g were used. Four diets were used, a control without MP (C) and three diets including 25 % MP: a) soaked MP in tap water + cooking (WMP); b) soaked MP in acetic acid solution + cooking (AAMP); c) soaked MP in calcium hydroxide solution + cooking (CHMP). The alkaline treatment reduced 71 % of L-Dopa in comparison to acid or water treatment (53 % and 41 % respectively). In the starter phase, the acid group had the lowest live weight gain (p<0.05) and highest feed conversion ratio when compared to control (p<0.05). Productive performance of birds fed with CHMP and C group was similar (p>0.05). In the finisher phase, there was not statistical difference in feed intake, live weight gain and feed conversion ratio among treatments (p>0.05). No differences were observed in carcass yield (p>0.05), but, the birds fed MP or AAMP had a heavier liver than birds on C group (p<0.05). Results shown that 25 % of CHMP can be used as feedstuff for broiler chickens without negative effects in their productive performance. Keywords: Velvet bean, L-Dopa, Poultry, weight gain.


2004 ◽  
Vol 79 (2) ◽  
pp. 241-253 ◽  
Author(s):  
J. L. Amatya ◽  
S. Haldar ◽  
T. K. Ghosh

AbstractOne hundred 1-day-old Ven Cobb chicks were used to study the effect of supplementation with 0-2 mg chromium (Cr) per kg diet from potassium chromate (T1), chromium chloride (T2) and chromium-yeast complex (T3). The control group (C) received no supplemental chromium. Each experimental group consisted of five replicates of five birds each and the supplementation was continued for 35 days. The weekly live-weight gain, food conversion ratio and the live-weight gain: food intake ratio were unaffected by the treatments. Metabolizability of the organic nutrients increased in the Cr supplemented groups compared with the C group and significantly higher values were observed in the T3 group indicating beneficial effects of Cr-yeast complex. Intake of the trace elements (copper, zinc, iron and manganese) fulfilled the requirements specified for broiler chickens. Retention of all these trace elements was higher (P < 0-001 for Cu, Zn and Fe, P <0-01 for Mn) in all the Cr supplemented groups compared with that in the C group. Furthermore, in the T3 group the retention of copper, zinc, iron and manganese was higher (P < 0001) than that in the T1 and T2 groups. Two birds were slaughtered from each replicate at the end of 21 and 35 days of feeding to observe Cr in the liver; this was higher (P < 0-01) after 35 days feeding only. Despite supplementation, liver Cr was lower (P < 0-01) in T1 T2 and T3 groups. Cr concentration in the plasma was higher (P < 0-05) in the T3 and T3 groups than that in the C group although its concentration did not change with the age of the birds. Higher (P < 0-01) plasma concentrations of copper were observed in the T1 T2 and T3 groups titan those in the C group. The differences between the Cr supplemented groups in this respect were not significant, however. Liver copper was higher (P < 0-001) in C while liver iron was the lowest (P < 0-05) in that group. The concentrations of copper, iron (P < 0-01) and zinc in the liver (P < 0-05) were higher after 35 than after 21 days while those of manganese were not affected by slaughter age. Protein accretion in the meat tended to be increased in the Cr supplemented groups while deposition of fat in the meat was lower but these differences were not significant (P > 0-05). Other meat quality parameters including sensory evaluation scores improved due to Cr supplementation and Cr-yeast complex was found to have exerted significantly greater effects on these parameters. It was concluded that the supplementation of 0-2mg Cr per kg food dry matter would improve the performance of broiler chickens in terms of metabolizability of organic nutrients, retention of trace elements and meat quality.


1977 ◽  
Vol 89 (1) ◽  
pp. 95-99 ◽  
Author(s):  
A. J. Ross ◽  
J. W. Tucker

SummarySeeds of the plant Crotalaria retusa L., containing 4·4% of the pyrrolizidine alkaloid monocrotaline, were fed in a finely ground form to broiler chickens at 0·005, 0·01, 0·05, 0·10 and 0·50% by weight of the diet continuously for 8 weeks.Feeding 0·005% and 0·01% had no effect on the growth performance of the birds. A non-significant reduction in live-weight gain, one death and chronic disease resulted from feeding 0·05%. At 0·10% and 0·50% there was high mortality and reduced voluntary feed intake, live-weight gain and feed conversion efficiency, the severity of the response being greater at 0·50%.Feather development was inhibited in birds fed 0·10% and 0·50% C. retusa seed.Until further research is done to determine the effect of feeding between 0·01% and 0·05% ground C. retusa seed in the diet of broiler chickens, it is suggested that the maximum should be 0·01%.


Author(s):  
B. G. Sharifyanov ◽  
F. M. Shagaliev ◽  
G. Kh. Idiyatullin ◽  
V. G. Kakhikalo ◽  
O. V. Nazarchenko

Rearing of replacement young animals in particular of calves based on the scientific notion of development of the organism, knowledge of age-specific physiology of digestion, metabolism of nutrients and needs them in the process of ontogenesis animals. The main task in the development and use of new effective feed additives is to increase the growth energy and livability of young cattle. One of the most reliable tools in this case are probiotic drugs of the new generation. Probiotics in animals activate digestion; strengthen non-specific immunity, which is the result of normalization of the microbiocenosis of the gastrointestinal tract. The purpose of this work was to study the possibility and effectiveness of using a multi-factorial microbiological drug Monosporin produced by Biotechnagro LLC (Krasnodar) in feeding of heifers. In the diets of heifers of experimental groups, the probiotic feed additive Monosporin has been used in quantities of 3,0 g/head/day (the 2nd experimental group) and 5,0 g/head/day (the 3rd experimental group). Heifers of the 1st control group did not receive this additive. It has been found that the expenditures of concentrated feed in heifers of the 2nd experimental group was lower by 3,5 %. Their herdmates of the 3rd experimental group spent concentrates per 1 kg of live weight gain by 5,4 % less compared to the 1st control group. In heifers of the 3rd experimental group have been received 5 g/head/day of probiotic feed additive of multivariate action Monosporin, feed expenditures per unit of live weight gain were the lowest. According to the results of research, it can be assumed that the use of the studied feed additive in these dosages contributes to the better use of metabolic energy and nutrients in the diet when rearing heifers.


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