نتایج جستجو برای: aspartic acid on semen characteristics of ross 308 roosters thirty 60
تعداد نتایج: 22032451 فیلتر نتایج به سال:
since the 1960s the age effects on learning both first and second language have been explored by many linguists and applied linguists (e.g lennerberg, 1967; schachter, 1996; long, 1990) and the existence of critical period for language acquisition was found to be a common ground of all these studies. in spite of some common findings, some issues about the impacts of age on acquiring a second or...
BACKGROUND: In ovo injection of nutrients as an early feeding method in birds directly supplies the nu- trients to the developing embryo. OBJECTIVES: This study was designed to evaluate the effects of in ovo injection of nicotonic acid, panto- thenic acid and folic acid on the performance and immune system of broilers. METHODS: </st...
The study was conducted to determine the semen characteristics of three genotypes of Nigerian indigenous cocks. Thirty Six (36) local breeding cocks comprising of 12 frizzle, 12 normal and 12 naked neck selected randomly from the poultry breeding unit of the University of Port Harcourt Teaching and Research farm was used for this study. Semen were collected from them by abdominal massage and an...
this study was designed to investigate the effects of different levels of tarragon powder on general performance and anetometric, properties of digestive system of male broiler chickens. 200 one-day-old ross 308 male broiler chickens in a completely randomized design with 4 treatments and 5 replicates per treatment and 10 birds in each replicate were used. experimental diets were set on the bas...
the effect of feeding barley-based diets (%60) supplemented with four commercial enzymes containing xylanase and ?-glucanase activities were investigated on performance and gastrointestinal size of broiler chicks. the enzyme supplemented diets were compared with unsupplemented barley- or corn-based diets. a total of 234-day-old male broiler chicks (ross 308) were allocated to 6 treatment groups...
An experiment was conducted to investigate the effect of molasses distillers condensed soluble (MDCS) on growth performance, carcass characteristics and intestinal morphology of broilers. A total of 400 one day-old, unsexed Ross 308 broiler chicks were randomly allotted to 20 cages. The dietary MDCS levels incorporated 0% and 4% in the starter and 0%, 4% and 8% in grower diet, respectively. The...
this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...
Hermansson, A. 2007. Effects on the reproductive system in domestic fowl (Gallus domesticus) after embryonic exposure to estrogenic substances. Doctor’s dissertation ISSN 1652-6880 ISBN 978-91-576-7319-0 Environmental pollutants with estrogenic activity have a potential to disrupt oestrogendependent developmental processes. Thus, the aim of this thesis was to investigated how embryonic exposure...
run-out-table (rot) is located between last finishing stand and down coiler in a hot strip mill. as the hot steel strip passes from rot, water jets impact on it from top and bottom and strip temperature decreases approximately from 800-950 °c to 500-750°c. the temperature history that strip experience while passing through rot affects significantly the metallurgical and mechanical properties, s...
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