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.
Results
Showing 1 to 20 of 399 for “"Chickens"”.
-
Hypomelanosis in chickens
… vertebrate species, including humans and chickens. The cause(s) of various forms of hypomelanosis is (are) not known. The aim of this study was to determine the cause of hypomelanosis in a breed of white chickens (White Plymouth Rock x Pile Game). It was hoped that this hypomelanotic breed …
-
Effects of polyphosphates on frozen chickens.
… properties of polyphosphates in frozen chickens, which were obtained during supervised factory trials, and to propose reasons for this effect. Previous work has been mainly concerned with why polyphosphates increase the water holding capacity (WHC) of meat.After a brief review of the …
-
Hemorrhages in muscles of broiler chickens
Contains fulltext : 145656.pdf (Publisher’s version ) (Open Access)
-
Skin breaking strength in broiler chickens
… contributing to skin strength of meat-type chickens. Skin breaking strength was initially measured in lines of chickens divergently selected for high (H) and low (L) juvenile body weight, their reciprocal crosses (HL and LH), and an F₂ generation derived from HL and LH matings. Skin of …
-
Imunnoresponsiveness in Japanese quail and chickens
… immune responsiveness in selected populations of chickens and crosses between them was examined (Experiment 3). Additive genetic variation was important in the inheritance of both primary and secondary responses to this antigen. Reciprocal differences and heterosis of the F₁ crosses were also …
-
Cellular Immunity to Fowlpox Virus in Chickens
Made available in DSpace on 2014-12-11T21:33:49Z (GMT). No. of bitstreams: 1 7414595.pdf: 4076738 bytes, checksum: f4538ebe86aa0aa8ffe4a34d6329d255 (MD5) Previous issue date: 1974
-
Adrenal Function in Hypophysectomized and Intact Chickens
Made available in DSpace on 2014-12-10T18:13:30Z (GMT). No. of bitstreams: 1 6607742.pdf: 4376310 bytes, checksum: 162526d2c1cf95620bd583f37dc6021e (MD5) Previous issue date: 1966
-
Factors Affecting Consumer Purchases of Frying Chickens
Made available in DSpace on 2014-12-04T21:47:49Z (GMT). No. of bitstreams: 1 0007872.pdf: 7734928 bytes, checksum: 521426a4e9a2bb8d3556009255044333 (MD5) Previous issue date: 1954
-
Inheritance of smut in New Hampshire chickens
… gene "E" is in the E/E or E/e condition. Some chickens with genotype Y/y E/E may show smut since the epistatic condition is weakened when gene "Y" is in the heterozygous condition. Theoretically, the most desirable genotype for producers of broilers and processors would be y/y e/e since the …
-
Cellular Events During Coccidial Infection in Chickens
… and body weight gain in Eimeria-challenged chickens. My previous studies showed that the growth reduction may be due to changes in expression of digestive enzymes and nutrient transporters in the intestine. This can also lead to diminished intracellular pools of nutrients and inhibit …
-
Genetics, immunoresponsiveness, and disease resistance in chickens
… responses showed no direct relationship. Chickens from lines HA and LA fed thiouracil exhibited hypothyroidism but did not differ from controls in antibody response. Differences in thyroid hormone concentrations between lines of dwarf and non-dwarf White Rocks selected for high and low …
-
Genetics, behavior, and disease resistance in chickens
… which could be made to various populations of chickens that had different genetic backgrounds. Differences were found among various lines for "fear", head shaking, body weight and reproductive traits. In all cases the association of "fear" with head shaking was of a low magnitude and neither …
-
Gene Mapping of Morphological Traits in Chickens
Chickens exhibit considerable variation in morphological traits, with some populations having undergone intensive selection for uniqueness and uniformity. These populations are a source of experimental material to study the genetics of morphological traits. An important first step in such studies …
-
Flight characteristics of pen-reared and wild prairie-chickens and an evaluation of a greenhouse to rear prairie-chickens
The introduction of pen-reared Attwater's prairie-chickens (APC, Tympanuchus cupido attwateri) into the wild to supplement existing populations has met with marginal success. Flight characteristics, predator avoidance behavior, and rearing methods are possible factors contributing to post-release …
-
Genetics, humoral immunoresponsiveness, and disease resistance in chickens
Lines of White Leghorn chickens selected > 20 generations for (HA) and against (LA) antibody response to SRBC injected i.v. from 41 to 51 days of age, are now known to have diverged in primary antibody response to SRBC. Experiments described in this dissertation were designed to further evaluate …
-
Central cannabinoid regulation of food intake in chickens
Marijuana has been used for medicinal and recreational purposes for thousands of years. Many people think of marijuana in the context of an illegal drug. Because of the antimarijuana attitude, research with cannabinoids was neglected for a long time. Although this substance is related to social …
-
Bilateral Asymmetry in Chickens of Different Genetic backgrounds
The dissertation consists of a series of experiments conducted to study developmental stability of various genetic stocks at different stages in the life cycle. The primary measures of stability were type and degree of asymmetry of bilateral traits and heterosis. Higher relative asymmetry (RA), …
-
Feed intake in chickens: genetic and social factors
… were measured in lines of White Plymouth Rock chickens selected for high (HW) and low (LW) juvenile body weight reared in cages and floor pens as line-separate (S) and line-intermingled (I) flocks in three replicated trials. Body weights of Line HW chicks in cages, livability of Line LW chicks …
Page 1 of 20