Reproductive disorders and reconception of beef cows subjected to timed artificial insemination
DOI:
https://doi.org/10.1590/1809-6891v22e-70384Abstract
The objective of this study was to evaluate gestational losses between 30 and 120 days of gestation and reconception in beef cows submitted to fixed-time artificial insemination (FTAI). The 18,462 information from the zootechnical file of animals submitted to FTAI in the period of the breeding season from November 2019 to April 2020 in the semiarid region of Minas Gerais were analyzed. The parameters evaluated were gestational loss, animal category, presence of the calf with the cow, body condition score (BCS) and final situation of the breeding season of the females that lost gestation after FTAI, the data were analyzed by Person's chi-square test (χ²) and Kruskal-Wallis test, with a significance level of 5% with use of the SPSS program. The final pregnancy rate was 58.52%. The loss rate between the first and second gestational diagnosis was 3.6%. Dependence was observed between the variables category and gestational loss (χ²= 12.374, p<0.05). The presence of the calf or not at the foot of the cow had no influence in relation to gestational loss (p>0.05). The difference in BSC between the categories was significant (p<0.05). Final situation was influenced (p<0.05) by animal category. Calving order and body condition score significantly influenced the gestational loss rate.
Keywords: Cattle raising; Gestational losses; Reproductive performance
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Castro FC, Fernandes H, Leal CLV. Sistemas de manejo para maximização da eficiência reprodutiva em bovinos de corte nos trópicos. Veterinária e Zootecnia. 2018; 25(1):041-061.
Malafaia GC, Azevedo DB, Pereira MA. A Sustentabilidade na Cadeia Produtiva da Pecuária de Corte Brasileira. In: Gestão Estratégica da Sustentabilidade. EMBRAPA. 2019; p. 63–81.
Andrade JS, Moreira EM, Silva GM, Souza VL, Nunes VRR, Júnior JSO et al. Aspectos uterinos, foliculares e seminais que afetam a IATF em vacas de corte no período pós-parto. Revista Brasileira de Reprodução Animal. Belo Horizonte. 2018; 42(3-4):77-89.
Bergamaschi MACM, Machado R, Barbosa RT. Eficiência reprodutiva das vacas leiteiras. Juiz de Fora, MG: Embrapa Gado de leite, Circular Técnica; 2010; 64 n. 12 p.
Reese ST, Franco GA, Poole RK, Hood R, Montero LF, Oliveira Filho RV, Cooke RF, Pohler KG. Pregnancy loss in beef cattle: A meta-analysis. Animal Reproduction Science. 2020; 212:106251.
Moraes, JCF.; Jaume, CM.; Souza, CJH. Manejo reprodutivo da vaca de corte. Revista Brasileira de Reprodução Animal. Belo Horizonte. 2007; 31(2):160-166.
Jemal H, Lemma A. Review on major factors affecting the successful conception rates on biotechnological application (AI) in cattle. Global Journal of Medical Research. Massachutsetts. 2015; 15(3):19-27.
Speckhart SL, Reese ST, Franco GA, Ault TB, Oliveira Filho RV, Oliveira AP, Pohler KG. Invited Review: Detection and management of pregnancy loss in the cow herd. The Professional Animal Scientist. 2018; 34(6):544-557.
El-Tarabany MS. Impact of stillbirth and abortion on the subsequent fertility and productivity of Holstein, Brown Swiss and their crosses in subtropics. Tropical Animal Health and Production. 2015; 47:1351-1356.
Santana RCM, Massa R, Zafalon LF, Megid J, Langoni H, Mathias LA. Estudo epidemiológico sobre as perdas reprodutivas em bovinos leiteiros: ocorrência de Neospora caninum, Brucella abortus, Herpesvírus bovino tipo-1 e Leptospira spp. em uma propriedade do município de São Carlos-SP. ARS Veterinária. Jaboticabal, SP. 2013; 29(3):153-160.
Machado R, Bergamaschi MACM, Silva JCB, Binelli M. Estratégias para reduzir a mortalidade embrionária em bovinos. II. Protocolo para reduzir a mortalidade embrionária em vacas de leite e em receptoras de embrião. 1. ed. São Carlos, SP: Embrapa Pecuária Sudeste, 2010; p. 21.
Dahl MO, De Vries A, Maunsell FP, Galvao KN, Risco CA, Hernandez JA. Epidemiologic and economic analyses of pregnancy loss attributable to mastitis in primiparous Holstein cows. Journal of Dairy Science. 2018; 101(11):10142–10150.
Houghton PL, Lemenager RP, Moss GE, Hendrix KS. Prediction of postpartum beef cow body composition using weight to height ratio and visual body condition score. Journal of Animal Science. Champaign. 1990; 68:1428-1437.
Siqueira LC Oliveira JFCD, Loguércio RDS, Löf HK, Gonçalves PBD. Sistemas de inseminação artificial em dois dias com observação de estro ou em tempo fixo para vacas de corte amamentando. Ciência Rural. 2008; 38:411-415.
Carvalho JS, Cavalcanti MO, Chaves MS, Rizzo H. Eficiência da inseminação artificial em tempo fixo em fêmeas zebuínas na mesorregião Sudeste do Pará, Brasil. Revista de Ciências Agrárias Amazonian Journal of Agricultural and Environmental Sciences. 2019; vol. 62.
Gottschall C, Ferreira E, Canellas L, Bittencourt HR. Perdas reprodutivas e reconcepção em bovinos de corte segundo a idade ao acasalamento. Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Belo Horizonte. 2008; 60(2):414-418.
Silke V, M. Diskin G, Kenny DA, Boland MP, Dillon P, Mee, JF, Sreenan JM. Extent, pattern and factors associated with late embryonic loss in dairy cows. Animal Reproduction Science. 2002; 71:1-12.
Batista DSN, Abreu UGP, Filho PBF, Rosa NA. Índices reprodutivos do rebanho Nelore da fazenda Nhumirim, Pantanal da Nhecolândia. Acta Scientiarum. Animal Sciences. 2012; 34(1):71-76.
Erb RE, Holtz EW. Factors associated with estimated fertilization and service efficiency of cows. Journal of Dairy Science. 1958; 41:1541-1552.
Thangavelu G, Gobikrushanth M, Colazo MG, Ambrose DJ. Pregnancy per artificial insemination and pregnancy loss in lactating dairy cows of a single herd following timed artificial insemination or insemination at detected estrus. Canadian Journal of Animal Science. 2015; 95:383–388.
Grillo GF, Guimarães ALL, Couto SRB, Abidufigueiredo M, Palhano HB. Comparação da taxa de prenhez entre novilhas, primíparas e multíparas da raça Nelore submetidas à inseminação artificial em tempo fixo. Revista Brasileira de Medicina Veterinária. 2015; 37(3):193-197.
Brauner CC, Pimentel MA, Lemes JS, Pimentel CA, Moraes JCF. Reprodução de vacas de corte em lactação e solteiras submetidas à indução/sincronização de estro. Ciência Rural. 2008; 38:1067-1072.
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