Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Leghorns"”.
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Effects of dietary tyrosine and tryptophan supplementation on immunity and brain neurotransmitter levels after SRBC injections in chickens
… and secondary IgG titers at some time periods in Leghorns and decreased secondary IgM titers at Day 5 in broilers, while 0.1% tryptophan addition decreased Leghorn secondary IgM titers and increased secondary IgG titers at Day 9 and broiler secondary IgM titers at Day 9. The phytohemagglutinin …
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Effect of juvenile dietary regime and time of beak trimming on pullet growth, subsequent egg production and incidence of prolapse in Leghorns
Beak trimming at two different ages, Week-1 and Week-8, under four dietary regimens, varying in percent crude protein (CP) and metabolizable energy (ME) were compared. The dietary regimens were conventional high energy (CHE), conventional medium energy (CME), conventional low energy (CLE) and …
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Nitric Oxide Involved in the Leptin Effect on Food Intake in Broiler and Leghorn Chickens
… on food intake. In the third experiment, using Leghorns instead of broilers, the ICV injection of leptin decreased food intake from 15 to 60 minutes postinjection (P=.05). However, food intake was not affected by injection of L-arginine plus leptin. Therefore, L-arginine appeared to antagonize …
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Bilateral Asymmetry in Chickens of Different Genetic backgrounds
… [(L+R)/2]) x 100, was observed in lines of White Leghorns selected 23 generations for high or low antibody response to sheep red blood cells than in their F1 crosses. The bilateral traits were 39-day shank length and length and weight of the first primary wing feather. Shank length was again …
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Tissue Distribution of a Peptide Transporter mRNA in Sheep, Dairy Cows, Pigs, and Chickens
… result from alternative mRNA processing. In both Leghorns (15) and broilers (20), the strongest hybridization was found in the duodenum while the jejunum and ileum showed faint bands. The size of mRNA in chickens was 1.9 kb. Other tissues, including the crop, proventriculus, gizzard, ceca, liver, …
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INFLUENCE OF GENOTYPE, PROTEIN-CALORIE RESTRICTION AND THEIR INTERACTION UPON RSV-INDUCED TUMORS IN CHICKENS
… lines 6-1 and 15-1, highly inbred lines of White Leghorns from the Regional Poultry Research Laboratory of the United States Department of Agriculture at East Lansing, Michigan. These chickens had been blood typed for allcantigens coded for by genes of the major histocompatibility complex and were …
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Feed intake in chickens: genetic and social factors
… were measured in Line HW and a line of White Leghorns (HA) selected for high antibody response to sheep erythrocytes. Chicks were fed one of seven diets which were either balanced (Diet A), or slightly (1) or moderately (2) deficient in lysine (L), methionine (M), or tryptophan (T) for seven …
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Birds of a white feather : a congenital hypopigmentary disorder in the chick
… Pile Games, White Plymouth Rocks and White Leghorns. Despite much investigation on the cellular mechanisms of Dominant white, its mode of action is still poorly understood. The aim of this study is to elucidate the molecular basis of amelanosis in WPR X PG chickens by addressing the …
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The effects of effort and day of exposure on imprinting
24 pairs of newly-hatched Leghorn chicks were randomly divided into 3 groups. Ss in one group followed a moving object for 30 min on Day 1 of life; Ss in another group followed for 30 min on Day 2; Ss in the remaining group followed for 15 min on Day 1 and 15 min on Day 2. One S in each pair …