(1) The kinds of audience investigated included the mate, unfamiliar females, other females and males with which subjects had had prior visual and auditory contact, and broody hens with and without young.
(2) Plasma concentrations of prolactin and corticosterone were determined in hourly samples collected over a 25-hr period from unrestrained turkey hens exhibiting incubation (broody) behavior.
(3) Under resting conditions thoracic skin temperature (Tths) and metabolic heat production (M) were significantly higher in broody than in non-broody hens, indicating a permanently increased conductance of the brood patch.
(4) The relation between metabolic rate and total peripheral resistance indicated more intense vasodilation for broody hens at the relatively low metabolic rates during moderate cooling, and more intense vasoconstriction for the broody hens at the high metabolic rates during stronger cooling.
(5) Body temperatures, metabolic rate, haemostatic parameters, and cardiovascular reactions to thoracic skin cooling were compared between incubating (broody) and non-broody Bantam hens.
(6) In broody hens, these coolings induced a large, immediate increase in M, no constriction of brood patch vasculature, and a decrease in colonic temperature (Tc).
(7) A higher thoracic skin temperature (Tths) for broody hens compared to non-broody hens suggests that brood patches are the probable site of this increased flow through arteriovenous anastomoses (AVAs).
(8) This treatment did not reduce broody behavior or have any beneficial effect on egg production.
(9) Under resting conditions, without thoracic skin cooling, cardiac output of broody hens was twice that of non-broody hens.
(10) Improved egg production was achieved both through an increase in the rate of egg production and through a reduction in broodiness.
(11) Hens also produced more (P less than .05) eggs when maintained under cyclic temperature conditions, although this observation was tempered by the fact that fewer hens were broody.
(12) Genetic changes in average clutch length, total days lost from broodiness, fertility, and response to cold stress did not have a major influence on semen production in the turkey.
(13) In addition, egg quality, broodiness, floor egg production, and poult weight data were obtained in Experiment 2.
(14) During moderate cooling, vasoconstriction in the feet and wattles of broody hens (but not of non-broody hens) freed non-nutrient blood flow for redistribution to the brood patches.
(15) Synthesis and release rates of prolactin and growth hormone (GH) in the anterior pituitary of laying and incubating broody chickens (Nagoya breed) were determined by a disc electrophoretic technique after in vitro incubation of anterior pituitaries with a labeled amino acid.
(16) In these hens, broodiness was disrupted on day 6 and feeding activity subsequently increased to levels of photorefractory hens.
(17) The RBC1 turkeys had linear increases in the percentage of broody hens during the first 84 and 180 days of production, the average length of the broody period, and the total number of days lost to broodiness during the 180-day period.
(18) When expressed as a deviation from RBC1, positive quadratic curvilinear changes were observed for E turkeys for number of clutches and broody periods, and days lost to broodiness during the first 180 days of production.
(19) Thoracic skin cooling from 35 to 25 degrees C decreased Tths less in broody than in non-broody hens.
(20) An assessment was made of the possible role of hypothalamic 5-hydroxytryptamine (5-HT) in the regulation of prolactin secretion in broody bantam hens.
Sitter
Definition:
(n.) One who sits; esp., one who sits for a portrait or a bust.
(n.) A bird that sits or incubates.
Example Sentences:
(1) Finally, the Janssen portrait had, it was shown during conservation work in 1988, been painted over to make the sitter look balder, and more "Shakespearean".
(2) The authors report on a 2-year-old girl with congenital hydrocephaly who was found unresponsive by the baby-sitter and died shortly thereafter.
(3) This variation on the chat-show format sees Perry discuss the history of the captured face – from framed portrait to selfie – while making his own image of sitters, including former minister Chris Huhne, who is said to have gone to the artist’s studio almost directly from prison.
(4) Not only did he miss a sitter in a defeat that meant an early exit for Spain, he was also booed throughout by Brazilian fans who cannot forgive his “treachery”.
(5) Once, when Spurs' big, but elegant, centre-forward Martin Chivers had scored goals in an important game, Nicholson said: "I told him afterwards that was a sitter that you missed.
(6) Freud is notable not only for his prodigious output - at any one time he will be at work on five or six paintings and, perhaps, an etching - but for the intense way in which he scrutinises his subjects (he is adamant that they 'affect the air around them', so his sitters must be present even when only the background is being painted).
(7) United were so relaxed they brought on Paul Pogba for the last 15 minutes and the substitute came as close as anyone else to scoring from open play – at least until Berbatov missed a stoppage-time sitter – only to see his shot blocked by Walters.
(8) Families reported a variety of uses, including the purchase of clothing, toys, sitters, diapers, special foods, adaptive equipment, and professional services.
(9) Number of patients and sitter incidents were too small for analysis.
(10) A group of 6 'sitters' and 'hardly walking' patients had poor to moderate results, a group of 13 'walkers' had moderate, good and excellent results.
(11) Activists said contractors for the TransCanada pipeline company had sent in a professional line-sitter who promptly claimed his spot in line – and then telephoned for reinforcements.
(12) Sculptor Fabian Bransing aimed to satirise this aspect of modern urban life, creating the " pay bench " which retracts its metal spikes when the prospective sitter feeds it a coin – but only for a limited time.
(13) Analysis of spelling errors for reliance on phonological processing in a subsample (N = 28) revealed that right sitters made more phonetically inaccurate misspellings, whereas, on the left, females, but not males, committed more phonetically accurate misspellings.
(14) Changes in Mb and LDH in the Pigeon Guillemot correlate with the animal's maturation from a sedentary nest sitter to an active diver and flyer.
(15) One hundred seven patients in an acute care setting who had lay sitters to provide the constant observation judged necessary to meet their safety needs were studied to determine the effect of psychiatric liaison nurse specialist (PLNS) consultation on nursing care and the use of sitters.
(16) In addition, health professionals can help siblings by insuring that an adequate explanation is given to siblings and by encouraging parents to maintain siblings at home, either with a sitter or family members.
(17) There was evidence of some disturbance in parent-child relationships in the preterm group, consisting of delays in maternal attachment to the child, negative maternal perception of the child compared with expectation of an 'average' baby, and persistent parental anxiety about leaving the child with a baby-sitter.
(18) But there was an early set-back for preseason favourite and pole sitter Lewis Hamilton who left the race after completing just two laps after a loss of power.
(19) The results show that sitter and lethal sitter alleles of for do not affect larval behavior through a mutation which affects larval muscle usage.
(20) To the extent that the diffusion of medical systems depends on a mass market, these fence-sitters must receive help and guidance.