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Effects of different litter depths on environmental parameters and growth performance of growing finishing pigs Ciência Rural
Corrêa,Érico Kunde; Bianchi,Ivan; Ulguim,Rafael da Rosa; Corrêa,Marcio Nunes; Gil-Turnes,Carlos; Lucia Júnior,Thomaz.
Deep litter systems represent low cost alternatives to raise growing-finishing pigs, reducing slurry accumulation, although pig's thermal comfort may be negatively affected by the heat produced inside the litter. This study compared environmental and performance parameters for growing-finishing pigs raised on deep litter systems having distinct depths and on solid floor. The experiment was conducted in a region of temperate climate of Brazil, comparing three treatments: litter having rice husk 0.5m (T1); and 0.25m deep (T2); and solid concrete floor (T3). The first litter was used in two lots and replaced by a second litter used in other two lots, during 52 weeks. Each lot included five pigs in a 7m² pen, from 60 to 145 d of age. Environmental parameters...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Deep litter systems; Environmental comfort; Growing-finishing; Swine.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000300031
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Inseminação artificial intra-uterina em leitoas com sêmen criopreservado com dimetilacetamida e glicerol Ciência Rural
Bianchi,Ivan; Calderam,Kérlin; Maschio,Éder Francisco; Madeira,Elisângela Mirapalheta; Ulguim,Rafael da Rosa; Rambo,Gissele; Corrêa,Érico Kunde; Lucia Júnior,Thomaz; Deschamps,João Carlos; Corrêa,Marcio Nunes.
Este estudo teve por objetivo avaliar o uso da dimetilacetamida (DMA) e de glicerol na criopreservação de sêmen suíno sobre as taxas de concepção e fertilização in vivo, utilizando o método de inseminação artificial pós-cervical. Foram sincronizadas 60 leitoas pré-púberes e inseminadas com o uso de sêmen congelado com glicerol 3% (30 fêmeas) e DMA 5% (30 fêmeas). O método de inseminação utilizado foi o pós-cervical, com concentração de 1 x 10(9) espermatozóides vivos por dose. Após 36 a 40h da inseminação, as fêmeas foram abatidas, sendo realizada a contagem de corpos hemorrágicos (CH) nos ovários. Foi realizada a lavagem dos ovidutos das fêmeas, verificando o número de estruturas recuperadas (oócitos e embriões), calculando-se as taxas de concepção e...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Inseminação artificial; Congelamento; Amidas; Glicerol; Suínos.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000700028
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Porcine luteinising hormone given at oestrus onset by intramuscular route does not advance ovulation in gilts Ciência Rural
Ulguim,Rafael da Rosa; Sbardella,Pedro Ernesto; Fontana,Diogo Luiz; Moroni,Julia Linck; Pommerehn,Luiza; Bernardi,Mari Lourdes; Wentz,Ivo; Bortolozzo,Fernando Pandolfo.
This study aimed to evaluate the use of porcine luteinising hormone (pLH) given at oestrus onset in gilts to synchronise ovulation. A total of 120 gilts (40/treatment) were assigned in three treatments: control - application of placebo by intramuscular (i.m.) route at oestrus onset; pLH2.5 - application of 2.5mg of pLH by i.m. route at oestrus onset; pLH5 - application of 5mg of pLH by i.m. route at oestrus onset. On average, the interval onset of oestrus to ovulation did not differ (P>0.05) among treatments (control - 28.7±1.6h; pLH2.5 - 28.2±1.6h; pLH5 - 27.5±1.6h). The frequency distribution of gilts ovulated in different moments after oestrus detection was not affected (P>0.05) by the treatment. In conclusion, the use of 2.5mg or 5mg of pLH given...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ovulation induction; Swine reproduction; Reproductive biotechniques..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001887
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Reproductive performance of fixed-time artificial insemination in swine and factors for the technology success Ciência Rural
Quirino,Monike; Pinheiro,Ana Raquel Almeida; Santos,Joabel Tonellotto dos; Ulguim,Rafael da Rosa; Mellagi,Ana Paula Gonçalves; Bortolozzo,Fernando Pandolfo.
ABSTRACT: Fixed-time artificial insemination (FTAI) is a reproductive technology that aids in obtaining an appropriate time to perform single artificial insemination (AI), thus reducing the number of inseminations per sow bred. FTAI protocols can either be based on estrus detection or day of weaning, aiming to synchronize ovulation using ovulation inducers. The protocols involving estrus detection usually employ porcine luteinizing hormone (pLH) as an inducer and, in general, satisfactory reproductive performance is observed. For protocols based on weaning day, the main hormone used is analog of gonadotropin-releasing hormone such as triptorelin and buserelin. Regardless of the protocol, the number of piglets born is usually not affected by FTAI. However,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ovulation; Synchronization; Single insemination; Sows; Gilts.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000200700
Registros recuperados: 4
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