Hatching Egg
Mostrando 1-12 de 116 artigos, teses e dissertações.
-
1. Effect of Egg Position in the Incubator on Broiler Hatching Results
ABSTRACT This study investigated whether the effect of egg location during incubation on hatching results in broiler eggs. For this purpose, a total of 756 broiler eggs were incubated for 21 days. The eggs were divided near the door and near the fan, and distributed on top (216 eggs), 324 in the middle (324 eggs), and in the bottom (216 eggs) according to a
Braz. J. Poult. Sci.. Publicado em: 20/12/2019
-
2. Effects of Dietary Supplementation of Soy Isoflavones on the Performance and Egg Quality in Native Chinese Breeder Hens
ABSTRACT To investigate the effects of soy isoflavones (ISF) on the laying performance of Xueshan breeder hens at different phases of the egg production cycle, 32 weeks (wks) old local Chinese breeder hens were assigned to two groups with three replicates (750 hens/replicate) for control and treatment groups. Then every group was divided into three sub-group
Braz. J. Poult. Sci.. Publicado em: 20/12/2019
-
3. In vitro ovicidal and larvicidal activity of Carica papaya seed hexane extract against Strongyloides venezuelensis
ABSTRACT Strongyloidiasis is a human parasitic disease caused by the helminth Strongyloides stercoralis whose treatment is particularly difficult in immunosuppressed patients due to their low responsiveness to conventional therapy. Carica papaya and its isolated compounds benzyl isothiocyanate, carpaine and carpasemine are promising compound for the treatmen
Rev. Inst. Med. trop. S. Paulo. Publicado em: 25/11/2019
-
4. Productive Performance, Egg Characteristics and Hatching Traits of Three Chicken Genotypes under Free-Range, Semi-Intensive, and Intensive Housing Systems
ABSTRACT The present study aimed at evaluating the effect of housing system on the live performance, egg quality, and hatching traits of three dual-purpose chicken genotypes. In total, 180 birds, comprising 48 pullets and 12 cockerels from each of three genotypes, were evaluated during the production phase (27-46 weeks). For this, 144 pullets and 36 cockerel
Braz. J. Poult. Sci.. Publicado em: 14/11/2019
-
5. Comparison of Several Turning Frequencies During the Storage Period of Red-Legged Partridge (Alectoris rufa) Hatching Eggs
ABSTRACT The effects of three egg-turning regimes during the pre-incubation storage period on egg weight loss, hatchability, embryonic mortality, chick weight at hatching and incubation length of red-legged partridge (Alectoris rufa) compared with unturned eggs were investigated. Two hundred eggs were allocated to four 50-egg batches stored at 15ºC and 80%
Braz. J. Poult. Sci.. Publicado em: 11/11/2019
-
6. Effect of Egg Weight on External and Internal Qualities, Physiological and Hatching Success of Japanese Quail Eggs (Coturnix coturnix japonica)
ABSTRACT This experiment was conducted to evaluate the effect of egg weight and egg physical characteristics on embryonic development, hatchability, and hatchling weight of Japanese quails (Coturnix coturnix japonica). In total, 689 eggs were classified in two categories: small (<13.5 g) or large (≥13.5 g), and different external eggshell and internal qual
Braz. J. Poult. Sci.. Publicado em: 11/11/2019
-
7. Effects of Incubator Carbon Dioxide and Oxygen Levels, and Egg Weight on Broilers’ Hatchability of Fertile Eggs
ABSTRACT This study investigated the effects of incubator carbon dioxide (CO2) and oxygen (O2) levels, and egg weight (EW) on embryo mortality (EM) and hatchability of fertile eggs (HFE). A total of 1920 hatching eggs were obtained from a middle-aged (41 weeks) ROSS 308 broiler breeder flock. The eggs were classified according to EW as heavy (69.63 ± 0.09 g
Braz. J. Poult. Sci.. Publicado em: 11/11/2019
-
8. Data mining as a hatchery process evaluation tool
ABSTRACT The hatchery is one of the most important segments of the poultry chain, and generates an abundance of data, which, when analyzed, allow for identifying critical points of the process . The aim of this study was to evaluate the applicability of the data mining technique to databases of egg incubation of broiler breeders and laying hen breeders. The
Sci. agric. (Piracicaba, Braz.). Publicado em: 04/11/2019
-
9. Macroscopic embryonic development of Guinea fowl compared to other domestic bird species
ABSTRACT Since few studies have addressed the embryonic development of Guinea fowl (Numida meleagris), the objective of the present study was to evaluate its embryonic development in the Cerrado region of Brazil and compare the results to published descriptions of the embryonic development of other domestic bird species. The commercialized weight for Guinea
R. Bras. Zootec.. Publicado em: 17/10/2019
-
10. Anthelmintic effect of Cymbopogon citratus essential oil and its nanoemulsion on sheep gastrointestinal nematodes
Resumo A resistência anti-helmíntica estimulou a busca por estratégias de controle de nematoides gastrintestinais, incluindo óleos essenciais livres ou em nanoemulsão. Este estudo avaliou a eficácia anti-helmíntica do óleo essencial de Cymbopogon citratus (OECc) e da nanoemulsão do óleo essencial de C. citratus (nOECc). Análises físico-químicas
Rev. Bras. Parasitol. Vet.. Publicado em: 29/08/2019
-
11. Ovicidal and larvicidal potential of Rosmarinus officinalis to control gastrointestinal nematodes of sheep
Resumo As infecções por nematódeos gastrintestinais (ING) constituem a maior limitação à produção de pequenos ruminantes. Na busca do controle desses parasitos, estudos com plantas medicinais têm sido uma importante alternativa. Visto isto, o estudo desenvolvido teve como objetivo avaliar a ação ovicida e larvicida in vitro do óleo essencial de R
Rev. Bras. Parasitol. Vet.. Publicado em: 29/08/2019
-
12. Exploring the Insecticide and Acaricide Potential of Development Regulators obtained from Restinga vegetation from Brazil
Abstract: As a part of our continuing search for insect and arthropod development regulators from Brazilian restinga vegetation of the Rio de Janeiro State, crude extracts, purified fractions and essential oils were submitted to screening tests seeking for biological activities on the development of the insects Rhodnius prolixus, Dysdercus peruvianus, Oncope
An. Acad. Bras. Ciênc.. Publicado em: 08/04/2019