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Showing 1 to 16 of 16 for “"COMMERCIAL BROILERS"”.
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Effect of maternal dietary fats on growth rate and bone development of commercial broilers
… fats on growth rate and bone development of commercial broilers was examined. Addition of fats [soybean oil (SBO), menhaden oil (MO) and chicken fat (CF)] to the maternal diet altered the tissue and yolk composition of the hens to reflect the dietary fat source. Day-old chick tissues from …
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Effects of Maternal Dietary Fats and Antioxidants on Growth Rate and Bone Development of Commercial Broilers
… fats on growth rate and bone development of commercial broilers was examined. Three hundred fifty female chicks were winged banded, weighed and equally divided among six starter pens (1.52 X 3.66m) with litter floors. At 20 wk of age, each pen was fed a basal laying diet supplemented with …
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Incubation temperature and post-hatch stress effects on immune parameters, immune system development, and performance in commercial broilers
… combinations of eggshell temperatures common to commercial multi-stage incubators during early and late incubation: low (L): 36.7°C, standard (S): 37.5°C, and high (H): 39.0°C. After hatch, chicks were transported under one of two conditions: control (C: 34°C) or distressed (D: 40°C), yielding 8 …
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The effects of yeast derivatives and adult cecal droppings on growth parameters and intestinal morphology in commercial broilers
… the impact of yeast derivatives in diets of broilers. The objective of the first study was to determine if yeast products alone or in combination effected performance or gut morphology of broilers during a mild coccidia challenge. Day-old Cobb 500 chicks were placed in floor pens on litter …
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An estimation of the costs associated with commercial broiler production in Virginia
This study is a summary of production costs of commercial broilers as reported by a sample of producers and contract feed dealers in the Shenandoah Valley area of Virginia. The results are presented in the form of estimated costs under stated situations of production facilities, performance, and …
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Inclusion body hepatitis as a primary disease in commercial broiler chickens
… study were to develop an animal model of IBH in commercial broilers, to demonstrate vertical transmission of fowl adenoviruses (FAdVs) in broiler breeders and to control IBH in broilers by vaccinating their parents with an inactivated FAdV vaccine. In order to develop an animal model of IBH in …
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The Effects of Probiotics on Performance and Immune Response of Broiler Chickens during Coccidiosis
Coccidiosis is endemic in the commercial broiler industry and inflicts devastating economic losses to poultry operations. Probiotics may provide a potential alternative to the prophylactic use of anticoccidials in commercial production. This study evaluated the effects of probiotic applications …
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The Effect of Jungle Light Spectrum on the Fearfulness of Commercial Broiler Chickens
… One of the topics of most interest is how commercial broiler houses are lit. There is discussion about high intensity light (50 lux), natural light from windows compared to conventional dim lighting programs (2 – 5 lux) using “white” LED light. Chickens are prey animals that depend on their …
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Temporal and Tissue Specific Changes in Expression of Nutrient Transporters and Host Defense Peptides in Young Broilers during Salmonella and Campylobacter infections
… Salmonella or a Campylobacter challenge in young commercial broilers. Comparisons were made between non-challenged and challenged (106, 107, or 108 colony forming units of Salmonella or Campylobacter) broilers on expression of nutrient transporters and host defense peptides in the duodenum, …
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Genotype by nutrition interactions for immunoresponsiveness and disease resistance in chickens
… regimens. Genetic stocks included (1) a commercial layer line, (2) commercial broiler lines, (3) a White Rock line selected for high juvenile body weight, (4) a White Leghorn line selected for low antibody response to sheep erythrocytes, (5) a fast growing White Rock dwarf line, (6) a …
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Performance and Microbial Profiles of Broiler Chickens fed Phytogenic Feed Additives or Probiotics during Coccidiosis
… the performance and microbial profiles of commercial broilers fed either PFAs or Eimeria challenged broilers fed probiotics. During the probiotics study, 1056 day-old male Ross broiler chicks were assigned to one of 6 treatments, 8 replicates per treatment, with 22 birds per floor pen in a …
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Neurological - Molecular Interface in Food Intake and Metabolism in Birds and Mammals
… to improve feed conversion and meat yield in commercial broilers.
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Bilateral Asymmetry in Chickens of Different Genetic backgrounds
… than in one with lower juvenile body weight. In commercial broilers, heart:lung ratios at hatch were lower and thus inferior in parental lines than in their F1 crosses.
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Skin breaking strength in broiler chickens
… the breast, thigh, and back of male and female commercial broilers were then examined in response to diets containing relatively wide or narrow ratios of calories to protein (C:P). Comparisons were made at 28, 42, and 56 days of age. Chickens fed diets containing wider C:P ratios had weaker skin …
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Muscle disorder or metabolic disorder: genomic, transcriptomic, and metabolomic insights into the pathogenesis of wooden breast and white striping in commercial broiler chickens
Commercial broilers represent a remarkable feat in the optimization of meat production, principally due to many generations of intensive artificial selection for economically important production traits such as rapid growth, high breast muscle yield, and low feed utilization. One of the unintended …
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ΕΠΙΔΡΑΣΗ ΕΝΟΣ ΣΥΣΤΗΜΑΤΟΣ ΣΤΑΒΛΙΣΜΟΥ ΜΕ ΣΧΑΡΩΤΟ ΔΑΠΕΔΟ ΣΤΙΣ ΑΠΟΔΟΣΕΙΣ ΤΩΝ ΚΡΕΟΠΑΡΑΓΩΓΩΝ ΟΡΝΙΘΙΩΝ
ΣΚΟΠΟΣ ΤΗΣ ΕΡΓΑΣΙΑΣ ΗΤΑΝ Η ΜΕΛΕΤΗ ΕΝΟΣ ΝΕΟΥ ΣΥΣΤΗΜΑΤΟΣ ΣΤΑΒΛΙΣΜΟΥ ΜΕ ΣΧΑΡΩΤΟ ΔΑΠΕΔΟ ΣΤΙΣ ΑΠΟΔΟΣΕΙΣ ΤΩΝ ΚΡΕΟΠΑΡΑΓΩΓΩΝ ΟΡΝΙΘΙΩΝ. ΤΑ ΣΥΜΠΕΡΑΣΜΑΤΑ ΠΟΥ ΠΡΟΕΚΥΨΑΝΕΙΝΑΙ: 1) ΤΟ ΣΧΑΡΩΤΟ ΔΑΠΕΔΟ ΑΥΞΑΝΕΙ ΤΗΝ ΠΑΡΑΓΩΓΗ ΖΩΝΤΑΝΩΝ ΟΡΝΙΘΙΩΝ/Μ2 ΣΕ 32,5KG ΑΠΟ 21,22 KG ΣΤΟ ΔΑΠΕΔΟ ΜΕ ΣΤΡΩΜΗ (ΑΥΞΗΣΗ 53,34%). 2) ΠΡΟΚΑΛΕΙ …