Artículo
Fertility and survival of Swedish Red and White × Holstein crossbred cows and purebred Holstein cows
Pipino, D. F.; Piccardi, Mónica Belén
; Lopez Villalobos, Nicolas; Hickson, R. E.; Vazquez, Maria Isabel
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
04/2023
Editorial:
American Dairy Science Association
Revista:
Journal of Dairy Science
ISSN:
0022-0302
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Swedish Red and White × Holstein (S×H) cows were compared with pure Holstein (HOL) cows for fertility and survival traits in 2 commercial dairy farms in central-southern Córdoba province, Argentina, over 6 years (2008–2013). The following traits were evaluated: first service conception rate (FSCR), overall conception rate (CR), number of services per conception (SC), days open (DO), mortality rate, culling rate, survival to subsequent calvings, and length of productive life (LPL). The data set consisted of 506 lactations from 240 S×H crossbred cows and 1,331 lactations from 576 HOL cows. The FSCR and CR were analyzed using logistic regression, DO and LPL were analyzed using a Cox's proportional hazards regression model, and differences of proportions were calculated for mortality rate, culling rate, and survival to subsequent calvings. The S×H cows were superior to HOL cows in overall lactations for all the fertility traits (+10.5% FSCR, +7.7% CR, −0.5 SC, and 35 fewer DO). During the first lactation, S×H cows were superior to HOL cows for all fertility traits (+12.8% FSCR, +8.0% CR, −0.4 SC, and 34 fewer DO). In the second lactation, S×H cows exhibited lower SC (−0.5) and 21 fewer DO than HOL cows. In the third or greater lactations, S×H cows showed higher FSCR (+11.0%) and CR (+12.2%), lower SC (−0.8), and 44 fewer DO than pure HOL cows. In addition, S×H cows had a lower mortality rate (−4.7%) and a lower culling rate (−13.7%) than HOL cows. Due to the higher fertility and lower mortality and culling rates, the S×H cows had higher survival to the second (+9.2%), third (+16.9%), and fourth (+18.7%) calvings than HOL cows. Because of these results, S×H cows had longer LPL (+10.3 mo) than HOL cows. These results indicate that S×H cows had higher fertility and survival than HOL cows on commercial dairy farms in Argentina.
Palabras clave:
CROSSBREEDING
,
FERTILITY
,
SURVIVAL
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos (INCIVET)
Articulos de INSTITUTO DE CIENCIAS VETERINARIAS
Articulos de INSTITUTO DE CIENCIAS VETERINARIAS
Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Pipino, D. F.; Piccardi, Mónica Belén; Lopez Villalobos, Nicolas; Hickson, R. E.; Vazquez, Maria Isabel; Fertility and survival of Swedish Red and White × Holstein crossbred cows and purebred Holstein cows; American Dairy Science Association; Journal of Dairy Science; 106; 4; 4-2023; 2475-2486
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