نتایج جستجو برای: ross and cobb broilers

تعداد نتایج: 16830516  

Journal: :Indian Journal of Animal Research 2022

Background: Garlic is considered a natural growth promoter in animals, but the effects on productive performance of broilers are variable. Therefore, impact and intestinal morphometry were evaluated to know using different levels purple garlic broilers' diet. Methods: Clinically healthy 1-day-old Cobb Vantress 500 (n=98, with an equal number two sex) randomized into four dietary treatment group...

Journal: :Journal of Applied Poultry Research 2010

Gharib Naseri , K, Rahimi , S , Yakhkeshi , S,

Background: With the removal of antibiotic as growth promoters from poultry diets, it is of interest to investigate potential alternatives to maintain good growth performance and good intestinal microbial populations in these birds. Numerous additives such as Probiotics, prebiotics, organic acids, enzymes and herbal extracts used extensively in poultry feed. Objective: The study was conducted...

Journal: :Agrarnyj vestnik Urala 2023

Abstract. An unsatisfactory microclimate in poultry premises contributes to damage the form of a decrease average daily gain broilers by 10 %. Purpose research is study effect relative humidity at same temperature regime on immunity and productivity Ross-308. Research methods. The experiment was carried out broiler chickens cross Ross-308 up 35 days age. In group II, period 0–1 growing broilers...

Journal: :Poultry science 2015
C Stefanello S L Vieira G O Santiago L Kindlein J O B Sorbara A J Cowieson

A study was conducted to evaluate the effects of dietary α-amylase and β-xylanase supplementation of corn-soy diets, formulated with or without supplemental phytase, on growth performance, energy utilization, and starch digestibility in broiler chickens. A total of 336 slow-feathering, Cobb × Cobb 500 male broilers were randomly distributed to 6 treatments having 8 replicates of 7 birds each. B...

2009
J. Berres S. L. Vieira E. Nogueira D. M. Freitas M. M. Cortes J. M. Pena R. Barros P. X. Silva F. V. F. Furtado J. A. Meira

This study evaluated live performance, carcass, abdominal fat and commercial cuts yields of broilers fed corn-soybean meal diets with increasing digestible valine to lysine levels from 21 to 42 days of age. One thousand five hundred and seventy-five Cobb vs Cobb 500 male broilers were raised with the same commercial mash feed until 21 days of age. Seven treatments with 9 replications of 25 bird...

2008
H. A. Gomes S. L. Vieira R. N. Reis D. M. Freitas R. Barros F. V. F. Furtado

The purpose of this study was to investigate the effects of drinking water supplementation with graded increases of Na and K salts on the performance and gut contents of broilers before processing. Birds had no water, tap water, or water supplemented with sodium bicarbonate or potassium chloride in the concentrations of 0.15, 0.30, and 0.45% in the last 12 and 24 h before processing. The last 1...

Journal: :پژوهش های علوم دامی ایران 0
مهران مهری حسن نصیری مقدم حسن کرمانشاهی محسن دانش مسگران

two experiments were conducted to determine lysine (lys) requirements of two commercial strains, ross 308 and cobb 500, from 15 to 28d of age. basal diet was formulated to be adequate in all nutrients except for lys. incremental levels of supplemental lys were added to the basal diet generating six experimental treatments in a range from 0.60 to 1.20% digestible lys. birds were randomized acros...

Journal: :Poultry science 2007
M Taylor G Hartnell D Lucas S Davis M Nemeth

A 42-d floor pen study was conducted to compare broiler (Ross x Ross 308) performance and carcass measurements when fed diets containing meal produced from glyphosate-tolerant soybeans (MON 89788) with those of broilers fed diets containing meal produced from control soybean (A3244) that has similar genetic background to MON 89788. Soybean meal produced from 6 conventional soybean varieties was...

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