Please use this identifier to cite or link to this item: http://repositorio.ufpa.br:8080/jspui/handle/2011/5308
Title: Estudo da eficiência reprodutiva de búfalos (Bubalus bubalis) na Amazônia Oriental
metadata.dc.creator: CAMARGO JÚNIOR, Raimundo Nonato Colares
metadata.dc.contributor.advisor1: MARQUES, José Ribamar Felipe
Keywords: Bubalinos
Búfalo
Reprodução animal
Seleção
Pará - Estado
Amazônia brasileira
Issue Date: 3-Dec-2007
Publisher: Universidade Federal do Pará
Empresa Brasileira de Pesquisa Agropecuária
Universidade Federal Rural da Amazônia
Citation: CAMARGO JÚNIOR, Raimundo Nonato Colares. Estudo da eficiência reprodutiva de búfalos (Bubalus bubalis) na Amazônia Oriental. 2007. 48 f. Dissertação (Mestrado) - Universidade Federal do Pará, Núcleo de Estudos em Ciência Animal, Empresa Brasileira de Pesquisa Agropecuária, Universidade Federal Rural da Amazônia, Belém, 2007. Programa de Pós-Graduação em Ciência Animal.
Abstract: Date from 1983 to 2005 of five herds of buffalo breeds Jaffarabadi, Murrah, Mediterranean, Carabao and Baio buffalo breeds and their crossbreds were evaluated. Reproductive characteristics studied: Age to the First Childbirth (AFC), Interval of Childbirths (IC), Reproductive Efficiency (RE), Fertility Real Adapted (FRA), the First Childbirth Productivity Adapted (FCPA) and Productivity Accumulated Adapted (PAA). The average general found, not adjusted for AFC was 1052.52 ± 120.45 days (34.7 months), with minimum and maximum of 737 and 1271 days, respectively, with a coefficient of variation of 10.32%. The degree of blood of the female and year of birth had significant effect on AFC, considering (P <0.0001) and (P <0.0001) for the degree of blood of the female and for the year delivery, respectively. For the IC, found the overall average, not adjusted, was 399.69 ± 23.78 days and 13.17 months with a coefficient of variation of 5.88%. There was no significant influence of the sources of variation (degree of blood of the female, year of birth and season of birth) to the IC. The average general found, not adjusted for RE was 91.09 ± 1.89% with a coefficient of variation of 2.05%. There was no significant influence of the sources of variation (degree of blood of the female, year of birth and season of birth) in the RE of the flock. The FRA found generally obtained as an average, not adjusted, 29.30 ± 4.40 kg of calf birth per year, with minimum and maximum of 0.99 and 44.27 kg of calf birth per year, respectively, with a coefficient of variation of 11.89%. Among the factors that affect the FRA of the herd studied, the degree of blood of the female and year of birth showed significant influence (P <0.0001) is, therefore, as sources of variation for this trait. For the FCPA, found the overall average, not adjusted, was 33.75 ± 6.89 kg, with minimum and maximum of 10 and 62 kg respectively, with a coefficient of variation of 10.20%. Among the factors that affect the FCPA the herd studied, only the year of birth showed significant influence (<0.0001) and it is therefore a source of variation for this trait. Regarding PAA, found the overall average, not adjusted, was 22.86 ± 6.55 kg of calf birth per year, with minimum and maximum values of 2.08 and 55.35 kg per year of calf birth respectively, with a coefficient of variation of 6.55%. Among the factors that affected the studied herd of PAA, the degree of blood of the female and year of birth showed significant influence (P <0.0001) is, therefore, as sources of variation for this trait. The reproductive parameters evaluated in this study showed to be within a range consistent with that observed in the relevant literature. In general, there was the influence of year of birth, degree of blood and blood level of the female on the characteristics studied, suggesting that such effects should be considered in the evaluation and selection of animals. The indices used were shown to be productive of great value to the improvement of the herd, should be further studied for their interactions with the overall performance of the flock.
URI: http://repositorio.ufpa.br/jspui/handle/2011/5308
Appears in Collections:Dissertações em Ciência Animal (Mestrado) - PPGCAN/Castanhal

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