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| Registros recuperados: 126 | |
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| Menegassi,S.R.O; Barcellos,J.O.J; Peripolli,V; Pereira,P.R.R.X; Borges,J.B.S; Lampert,V.N. |
| The variability of scrotal circumference and the effects of age and breed as well as the relationship between testicular weight (TW), scrotal circumference (SC), and live weight (BW) were investigated in bulls. Devon, Polled Hereford, and Red Angus breeds showed higher SC values than the other British, Continental, Synthetic, and Zebu studied breeds. The percentage of culled bulls because of low SC ranged from 7.01 to 24.25%. The increase of SC was proportional to the increase in TW and they were highly correlated (r²= 0.90). The results suggest that SC in young bulls is the best way to predict TW and, therefore, a useful tool for their selection |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertility; Scrotal circumference; Testicular weight. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000100014 |
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| Gonzalez,Félix; Muiño,Rodrigo; Pereira,Víctor; Martinez,Diego; Castillo,Cristina; Hernández,Joaquín; Benedito,José Luis. |
| The objective of this work was to determine productive and fertility responses of Holstein-Friesian heifers and cows to supplementation with extruded linseed and soybean as sources of polyunsaturated fatty acids (PUFAs). Supplementation had a positive effect on profitability, with significant increases in milk yield in supplemented cows, but not in heifers. Treatments had no effect on milk fat content, but higher milk protein contents were observed with supplementation. A higher conception rate was found for supplemented heifers, but not for cows. Fat sources containing PUFAs are recommended for dairy cattle supplementation, since they improve fertility in heifers and milk yield in cows. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Extruded linseed; Extruded soybean; Fertility; Long-chain fatty acids; Milk composition; PUFA.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000400306 |
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| Loiola,Marcus Vinícius Galvão; Bittencourt,Rodrigo Freitas; Rodrigues,Alexandra Soares; Ferraz,Priscila Assis; Lima,Marcos Chalhoub Coelho; Carvalho,Caio Victor Damasceno; Ribeiro Filho,Antonio de Lisboa. |
| Abstract: The objective of this work was to evaluate the effects of supplementation with melengestrol acetate (MGA), after timed artificial insemination (TAI), on the conception rate of Nellore cows, according to cyclicity during the protocol, estrus expression between intravaginal device withdrawal and insemination, and diameter of the largest follicle at the time of insemination, in order to identify predictors of the use of MGA. Multiparous lactating cows (577) were subjected to a hormonal protocol for ovulation synchronization. On day -2 of the protocol, the animals were painted with a marker on the base of their tail. On day 0, they were evaluated for estrus expression; the preovulatory follicle diameter (POFD) was measured by ultrasonography, and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anestrous; Bovine; Fertility; Insemination; Melengestrol acetate. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000100105 |
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| Shanmugam,Murugesan; Mahapatra,Ramkrishna. |
| Abstract The present study evaluated the effect of cryoprotectants, semen diluents and chicken lines during pellet method of semen cryopreservation. Three different experiments were conducted; Experiment 1 - semen was cryopreserved using dimethylformamide (DMF) at 6% and 9% concentrations in two semen diluents (Lake and Ravie diluent and TES/NaCl diluent), Experiment 2 - semen was cryopreserved using dimethylacetamide (DMA) at 6% and 9% with or without sucrose (100mM), Experiment 3- semen from two chicken lines (PD1 and PD6) was cryopreserved using DMA (6% and 9%). Semen was evaluated pre and post cryopreservation for progressive motility, live and abnormal sperm. Semen pellets were stored in cryovials for at least seven days before examination and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chicken; Diluent; Fertility; Pellet cryopreservation; Semen. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100501 |
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| James, D.W.; Leggett, G.E.; Dow, A.I.. |
| To facilitate irrigation in central Washington, land is leveled or smoothed on a broad scale. As a result, the calcareous and extremely infertile subsoils are exposed and used directly as a medium for plant growth. Phosphorus fertilizer requirements of exposed subsoils were determined by measuring crop yield and P uptake on plots that were fertilized in the current and one, two or three preceding seasons. Annual crops used as indicators of P availability at three sites were field beans, Sudangrass and sugar beets. A supplementary experiment involved fertilization of a previously established alfalfa crop. Crop growth and P uptake results were correlated with sodium bicarbonate soil testing |
| Tipo: Technical Bulletin |
Palavras-chave: Calcareous soil; Fertility; Phosphorous; Mass Import - autoclassified (may be erroneous). |
| Ano: 1967 |
URL: http://eprints.nwisrl.ars.usda.gov/1133/1/105.pdf |
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| Carvalho,L.E.; Silva Filho,J.M.; Palhares,M.S.; Sales,A.L.R.; Gonczarowska,A.T.; Oliveira,H.N.; Resende,M.C.; Neves,M.G.; Madison,R.J.. |
| ABSTRACT The aim of this study was to evaluate the effect of two different extenders (Skimmed Milk Glucose - SMG or Lactose - Egg Yolk - LEY) on physical characteristics and fertility of fractionated donkey semen cooled at 5°C. For this, four Pêga donkeys were used as semen donors. The sperm rich fraction of the ejaculate was diluted preparing insemination doses containing 400 x 106 motile spermatozoa in a volume of 22 mL, cooled to 5°C and stored up to 48 hours in a container proposed by Palhares (1997). Sperm motility and vigor were assessed in fresh semen, after first semen dilution, before insemination, at 24 and 48 hours after storage. For the fertility evaluation, 44 mares were inseminated with semen stored for a period between 12 and 24 hours. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Donkey; Fractionated collection; Cooled semen; Fertility. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100029 |
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| Castelo Branco,M.A.; Castelo Branco,Y.N.T.C.; Moraes Junior,F.J.; Barros,F.N.; Barçante,F.P.S.; Carvalho,G.M.C.; Melo Evangelista,L.S.; Abreu-Silva,A.L.; Sousa Filho,M.A.; Souza,J.A.T.. |
| ABSTRACT Seminal plasma contains serine proteases and serine protease inhibitor, which are involved in mammalian fertilization, and the inhibitors can be applied to prevent cold-induced sperm capacitation. The effects of different concentrations of two serine protease inhibitors were analyzed, Plasminogen activator inhibitor 1 - PAI-1 (70ƞg, 140ƞg and 210 ƞg) and Antipain (10µg, 50µg and 100µg) as supplementation to bovine semen cryopreservation extender. The effects of the inhibitors on the sperm parameters (sperm kinetics - CASA, acrosome integrity, plasma membrane integrity, mitochondrial membrane potential, sperm defects and acrosome reaction rate) were evaluated in the post-thaw semen. Cryopreservation of sperm with Antipain decreased post-thaw... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Curraleiro Pé-Duro; Fertility; Seminal evaluation; Serine protease inhibitors; Sperm cryopreservation. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501114 |
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| Demattê, José Alexandre Melo; Universidade de São Paulo; Demattê, José Luiz Ioratte; 2Universidade Federal da Paraíba; Alves, Evandro Roberto; Universidade Federal da Paraíba; Barbosa, Roberto Negrão; Agricultural Center, Louisiana State University; Morelli, Jorge Luis; Universidade de São Paulo. |
| The region of Areiópolis in São Paulo State is one of the major sugarcane producers in the world, and chemical management is the basis of the system making its production viable. Thus, the proposed methods for precision agriculture can be evaluated as an alternative for environment protection and can aid the search for greater productivity at the same time. The main objective of the present work was to compare the precision agriculture (PA) and traditional agriculture (TA) management systems and to highlight their distinctions, such as differences in grid sampling, production variation, plant failure and costs. Two experiments were set up, and the soil fertilizers were applied by corrective application methods to 16-ha lots using the average general... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.01.06-4 tropical soil; Soil sampling; Fertility; Management 5.01.01.06-4. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17664 |
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| Dolatifard,A; Jafari,MA. |
| ABSTRACT The aim of the current research was to study the effect of canola meal processing methods on the traits of egg, fertility, cecal microbial population, and the carcass of broiler breeder hens. Canola meal was processed by fermentation and enzymatic hydrolysis methods, then was fed to the hens. Four hundred and fifty broiler breeder hens of Ross strain weighing 3300±150 g (40 weeks) were used for 12 weeks. A completely randomized design was used with 6 treatments (unprocessed, processed by Lactobacillus Plantarum, Bacillus Subtilis, Aspergillus Oryzae, Neurospora Sitophila, and Alcalase enzyme) and 5 replications. Fifteen hens were included in each pen. The data collected were analyzed using the LSmeans procedure of SAS software. The treatment... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caecum; Fermentation; Fertility; Processing. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400308 |
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| TEIXEIRA,R. L.; MUSICK,J. A.. |
| The reproductive and feeding biology of the lined seahorse, Hippocampus erectus, was studied in Chesapeake Bay. Seahorses are monogamous, and males incubate the eggs received from females in a closed brood pouch (= marsupium). Females do not play any parental care after mating. Total sex ratio and the operational sex ratio was strongly skewed toward females. Males and females had similar number of eggs/embryos and hydrated oocytes, respectively. The number of eggs/embryos found in the male brood pouch varied from 97 to 1,552 (fish from 80 to 126 mm TL), whereas the number of hydrated oocytes in female varied from 90 to 1,313 (fish from 60 to 123 mm TL). Both, the number of eggs/embryos and hydrated oocytes were better linearly correlated to total weight... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Parental care; Fecundity; Fertility; Amphipods; Estuary. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000100011 |
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| Registros recuperados: 126 | |
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