Encontrados 12 documentos, a visualizar página 1 de 2
Influence de l'homogénéité des portées sur la prise colostrale et la mortalité ...
Charneca, Rui; Lima, Fábio; Freitas, Amadeu; Nunes, José; Le Dividich, JeanWithin‐litter variation in birth weight is a factor relevant to pig production. This study set out to compare colostrum intake and postnatal mortality in litters of uniform or heterogeneous birth weight. The study involved 52 sows (Large White x Landrace) and their litters. To create two litters, either uniform (U) or heterogeneous (Control, C) in birth weight, piglets from two sows farrowing concomitantly were...
How immunogenetically different are domestic pigs from wild boars: a perspectiv...
Chen, Shanyuan; Gomes, Rui; Costa, Vânia; Santos, Pedro; Charneca, Rui; Zhang, Ya-ping; Liu, Xue-hong; Wang, Shao-qing; Bento, Pedro; Nunes, JoséThe coexistence of wild boars and domestic pigs across Eurasia makes it feasible to conduct comparative genetic or genomic analyses for addressing how genetically different a domestic species is from its wild ancestor. To test whether there are differences in patterns of genetic variability between wild and domestic pigs at immunity-related genes and to detect outlier loci putatively under selection that may un...
Relationship between birth order and birth weight of the pig
Charneca, Rui; Freitas, Amadeu; Nunes, José; Le Dividich, JeanThe objective of this study was to determine whether birth weight of the pig is related to its birth order. The study involved 292 sows from 2 genotypes (Large White x Landrace crossbred (LL), n= 247 and Alentejano (AL), n=45) of mixed parity and their piglets. Most sows farrowed naturally. Each piglet was identified, weighed (± 1g) (mummies excepted) and its birth order (BO) recorded within 2 min of birth. A t...
Influence de l'homogénéité des portées sur la prise colostrale et la mortalité ...
Charneca, Rui; Lima, Fábio; Freitas, Amadeu; Nunes, José; Le Dividich, JeanWithin‐litter variation in birth weight is a factor relevant to pig production. This study set out to compare colostrum intake and postnatal mortality in litters of uniform or heterogeneous birth weight. The study involved 52 sows (Large White x Landrace) and their litters. To create two litters, either uniform (U) or heterogeneous (Control, C) in birth weight, piglets from two sows farrowing concomitantly were...
INFLUÊNCIA DA HOMOGENEIDADE DAS NINHADAS SOBRE A INGESTÃO DE COLOSTRO E A MORTA...
Charneca, RuiA ingestão de colostro é fundamental para a sobrevivência do leitão recém-nascido. O leitão nasce desprovido de protecção imunitária e com baixas reservas energéticas para fazer face às suas necessidades para termorregulação e actividade física. Segundo Le Dividich et al. (2005), um leitão de 1Kg de peso terá como reservas cerca de metade das necessidades energéticas para as suas primeiras 24h de vida, nas cond...
Reproductive and productive traits of sows from Alentejano compared to sows Lar...
Charneca, Rui; Nunes, José; Le Dividich, JeanThis study compared some reproductive (gestation and farrowing length; total born, born alive, stillbirths, mummified, post-natal mortality) and productive traits (piglet and litter weights at birth and at 21 days) between Alentejano swine breed (AL) and a conventional genotype (Large-White x Landrace - C). A total of 90 animals (45 per genotype) reared under 4 production environments were studied along farrowi...
Novel coding genetic variants of the GBP1 gene in wild and domestic pigs (Sus s...
Chen, Shanyuan; Gomes, Rui; Costa, Vânia; Rocha, Isabel; Zsolnai, Attila; Anton, István; Charneca, Rui; Santos, Pedro; Nunes, José Luis; Buzgó, JózsefThe interferon-induced guanylate-binding protein 1 gene (GBP1) plays an important role in host defense against viral, bacterial and protozoan infections. To explore novel genetic variants in this gene, we re-sequenced a 587-bp fragment spanning the exon 2 of the GBP1 gene in a sample panel consisting of 34 wild boars and 59 local domestic pigs from three geographic regions (China, Iberian Peninsula, and Central...
Manejo de la Reproducción
Santos Silva, João; Williams, Sara; Barrales, Hérnan; Charneca, Rui; Tirapicos Nunes, José Luís; Garcia Artiga, Carlos; De Loera Ortega, YasminO capitulo inclui os pontos: Selecção de reprodutores; Maneio dos animais de substituição, Maneio das porcas; Maneio dos leitões do parto ao desmame; Maneio do varrasco; Métodos de treino; Maneio de varrascos em monta natural; Avaliação do sémen; Preparação e conservação de doses seminais.
Estudo de factores que influenciam a mortalidade de leitões Alentejanos: compar...
Charneca, RuiA raça suína Alentejana (AL) apresenta uma produtividade numérica substancialmente inferior à verificada em genótipos suínos convencionais de produção intensiva. Dois dos principais contribuintes para essa reduzida produtividade são a sua baixa prolificidade e uma elevada taxa de mortalidade dos leitões, entre o nascimento e o desmame. O presente estudo teve como objectivo o estudos de factores influenciadores ...
Body composition and blood parameters of newborn piglets from Alentejano and co...
Charneca, Rui; Nunes, José; Le Dividich, JeanThis study aimed to compare the body composition and some blood parameters [(glucose, albumin and insulin-like growth factor 1 (IGF-1)] of newborn piglets farrowed by unselected Alentejano (AL) or conventional genotype [Large- White Landrace (LL)]. Carcasses (12 of each genotype) and blood samples were obtained from a total of 34 litters (18 AL, 16 LL). Gestation length was 4d shorter in AL sows compared with L...
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