Consulta: subjectFacets:"Molt"
Registros recuperados: 6
Data/hora: 15/06/2024 14:41:44

Growth, molt and survival of Palaemonetes argentinus (Decapoda, Caridea) under different light-dark conditions
Provedor de dados: 76
Autores: Díaz,Ana Cristina; Sousa,Liliana G.; Cuartas,Elena I.; Petriella,Ana María.
Growth, survival and molting rate in Palaemonetes argentinus Nobili, 1901 were compared under different light-dark conditions. During 80 days, 150 immatures of both sexes (initial mean weight 0.09±0.002g), from Los Padres lagoon, Mar del Plata, Argentina, were maintained in aquaria at 19±0.4°C under three light conditions: 0:24, 10:14 and 13:11 (L-D). They were fed daily on an artificial diet (45% proteins, 17.2% lipids, 7% water, 7% ash). Good weight increment was obtained with the three treatments, finding a positive linear correlation between mean weight and time (0:24, r=0.97; 10:14, r=0.99; 13:11, r=0.98). There were no significant differences in the percentage increment in mean weight among the treatments (0:24, 19.3%; 10:14, 29.3% and 13:11, 26.5%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Molt; Photoperiod; Crustacea; Palaemonidae.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212003000300004

LAYERS '99, PART II: REFERENCE OF 1999 TABLE EGG LAYER MANAGEMENT IN THE U.S.
Provedor de dados: 31
The National Animal Health Monitoring System (NAHMS) is sponsored by the USDA:APHIS:Veterinary Services (VS). The NAHMS Layers '99 Study was designed to provide information about the nation's layer population for education and research purposes. The USDA's National Agricultural Statistics Service (NASS) collaborated with VS to select a statistically-valid sample from 15 states for Layers '99. The 15-state target population accounted for over three-quarters of the table egg layers in the U.S. as of December 1, 1998. The study was limited to companies with 30,000 or more layer. About two-thirds (68.1 percent ) of farm sites did not allow visitors that did not have a business reason for visiting the operation in the layer houses. The percentage of farm sites...
Tipo: Report
Palavras-chave: NAHMS; Layer; Layers; Layer house; Poultry; Pullet; Flock; Egg; Table egg; Lay; Biosecurity; Feeder; Visitor; Morbidity; Disease; Disinfect; Salmonella enteritidis; S.E.; Management; Molt; Production; Livestock Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/32765

LAYERS '99, PART I: REFERENCE OF 1999 TABLE EGG LAYER MANAGEMENT IN THE U.S.
Provedor de dados: 31
The National Animal Health Monitoring System (NAHMS) is sponsored by the USDA:APHIS:Veterinary Services (VS). The NAHMS Layers '99 Study was designed to provide information about the nation's layer population for education and research purposes. The USDA's National Agricultural Statistics Service (NASS) collaborated with VS to select a statistically-valid sample from 15 states for Layers '99. The 15-state target population accounted for over three-quarters of the table egg layers in the U.S. as of December 1, 1998. The study was limited to companies with 30,000 or more layers. While the majority of farm sites were contract farms (61.0 percent), the majority of birds were located on company owned farms (72.6 percent), indicating that company owned farms...
Tipo: Report
Palavras-chave: NAHMS; Layer; Layers; Poultry; Pullet; Flock; Egg; Table egg; Lay; Molt; Cage; Contract farm; Coccidiosis; Newcastle disease; Infectious bronchitis; Salmonella enteritidis; S.e.; Competitive exclusion; Laryngotracheitis; LT; Mycoplasma gallisep; Livestock Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/32757

Replacement and growth of primary feathers in captive rock pigeons, Columba livia (Aves: Columbidae)
Provedor de dados: 103
Autores: Mallet-Rodrigues,Francisco.
The replacement and growth of 311 primary feathers of eight captive male rock pigeons, Columba livia Gmelin, 1789 were monitored daily. Feather replacement was recorded in all months, but the primaries 1 to 5 (innermost primaries) were replaced mostly from September to December, whereas the primaries 6 to 10 (outermost primaries) were more frequently replaced from January to August. Each primary was held in plumage from six to fifteen months, but the lifetime of the outer feathers was longer than that of the inner feathers. A new primary emerges two or three days after its predecessor has been dropped, but the primaries replacing the feathers accidentally lost during bird handling emerge only after about eight days. The average growth period of a primary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feather growth; Feather replacement; Molt; Primary feather.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000200004

Seasonal pelage color change: news based on a South American Rodent
Provedor de dados: 42
Autores: Camargo,Carolina R.; Colares,Elton; Castrucci,Ana Maria L.
Mammalian seasonalmolting and color change are known to be influencedby photoperiod changes. Calomys laucha, a South American rodent, exhibits seasonal pelage color change; however, unlike Northern hemisphere rodents, which present a gray or brown color during summer and a whitish color during winter, C. laucha pelage changes from an orange color during summer to a dark gray color during winter. Animals maintained for over a year in stationary photoperiod (LD 12:12h, 22ºC) presented orange pelage color during the summer corresponding month (January), and gray color during the winter corresponding month (July). Same age animals were evaluated during summer or winter months, and also showed different colors. Animals exposed for 12 weeks to summer or winter...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Color change; Endogenous rhythm; Seasonality; Molt; Pelage color.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000100009

The influence of water renewal rates on the reproductive and molting cycles of Penaeus paulensis in captivity
Provedor de dados: 52
Autores: Peixoto,Sílvio; Cavalli,Ronaldo Olivera; Wasielesky Junior,Wilson.
The present study analyzed the reproduction of wild-caught Penaeus paulensis in relation to its molt cycle. The experimental design consisted of two treatments (continuous water flow and batch renewal) with two replicates. The stocking density in experimental tanks (1.50 x 0.96m) was approximately 7 animals/m², resulting in 4 males (23.9 ± 2.3 g) and 6 females (52.0 ± 5.5 g) per tank. Shrimp had their uropods cut for individual marking and female maturation was induced through the unilateral eyestalk-ablation. The intermolt period of females and males (17.4 ± 3.2 and 17.8 ± 4.6 days, respectively), number of days between molting and the first spawn (6.9 ± 2.8 days) and number of spawns in the intermolt period (1.4 ± 0.5), presented no significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molt; Maturation; Penaeid.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000200020