Longevity in dairy cattle breeding: a review

Essl, A.

doi:10.1016/s0301-6226(98)00160-2

Cited by 119 publications

(111 citation statements)

References 48 publications

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“…In addition, Kadarmideen (2004) obtained an estimate of 0.13 for the genetic correlation between milk and SCS, which is close to this study (0.12). Genetic correlations between milk and lameness were also within the range reported by other studies (0.13 to 0.48; Pryce et al, 1997 and1998;Van Dorp et al, 1998). A high milk yield is predisposing to mastitis or lameness, although a case of either of these will decrease the yields for the remainder of the lactation (Hagnestam et al, 2007) and particularly mastitis will affect milk yields of subsequent lactations because of impaired or destroyed secretory tissues of the udder (Lucey and Rowlands, 1984).…”

Section: Genetic Correlationssupporting

confidence: 80%

“…In addition, mastitis and lameness are commonly reported as the most costliest diseases of dairy herds Bennett, 2003) because of milk losses, treatment costs, high incidence rates and their knock-on effects. Essl (1998) advised including determinants of involuntary culling, such as disease incidence, dystocia and reproductive performance, as part of selection as these traits should increase the genetic potential for longevity. In the early 2000s, producer-recorded data related to fertility were assessed for their suitability for use in genetic evaluations (Wall et al, 2003), which led to the inclusion of the Fertility Index in UK genetic evaluations in August 2006.…”

Section: Introductionmentioning

confidence: 99%

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Genetic parameters for production, health, fertility and longevity traits in dairy cows

Pritchard

Coffey

Mrode

et al. 2013

Animal

139

108

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Milk production, fertility, longevity and health records, were extracted from databases of two milk recording organisations in the United Kingdom for the first three lactations of the Holstein-Friesian breed. These included data related to health events (mastitis and lameness), voluntarily recorded on a proportion of farms. The data were analysed to calculate disease incidence levels and to estimate genetic parameters for health traits and their relationships with production and other functional traits. The resulting dataset consisted of 124 793 lactations from 75 137 animals of 1586 sires, recorded in 2434 herds. Incidence of health events increased with parity. The overall incidence of mastitis (MAS) and lameness (LAM), defined as binary traits, were 17% and 16%, respectively. Heritability estimates for MAS and LAM were 0.04 and 0.02, respectively, obtained from repeatability linear sire models. Heritability estimates of mastitis and lameness as count traits were slightly higher, 0.05 and 0.03, respectively. Genetic correlations were obtained by bivariate analyses of all pair-wise combinations between milk 305-day yield (MY), protein 305-day yield (PY), fat 305-day yield (FY), lactation average log e transformed lactation average somatic cell count (SCS), calving interval (CI), days to first service (DFS), non-return at 56 days (NR56), number of inseminations (NINS), mastitis (MAS), number of mastitis episodes (NMAS), lameness (LAM), number of lameness episodes (NLAM) and lifespan score (LS). As expected, MAS was correlated most strongly with SCS (0.69), which supports the use of SCS as an indicator trait for mastitis. Genetic correlations between MAS and yield and fertility traits were of similar magnitude ranging from 0.27 to 0.33. Genetic correlations between MAS with LAM and LS were 0.38 and 20.59, respectively. Not all genetic correlations between LAM and other traits were significant because of fewer numbers of lameness records. LAM had significant genetic correlations with MY (0.38), PY (0.28), CI (0.35), NINS (0.38) and LS (20.53). The heritability estimates of mastitis and lameness were low; therefore, genetic gain through direct selection alone would be slow, yet still positive and cumulative. Direct selection against mastitis and lameness as additional traits should reduce incidence of both diseases, and simultaneously improve fertility and longevity. However, both health traits had antagonistic relationships with production traits, thus genetic gain in production would be slower.

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Section: Genetic Correlationssupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Genetic parameters for production, health, fertility and longevity traits in dairy cows

Pritchard

Coffey

Mrode

et al. 2013

Animal

139

108

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“…Porém, há várias evidências de experimentos de seleção, destacando o antagonismo entre maturidade precoce e longevidade (Essl, 1982(Essl, , 1993(Essl, , 1998Solkner, 1989;Strandberg, 1992).…”

Section: Introductionunclassified

Parâmetros genéticos de longevidade e produtividade de fêmeas da raça Nelore

Bertazzo¹,

Freitas²,

Gonçalves³

et al. 2004

R. Bras. Zootec.

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RESUMO -Informações de 56.413 nascimentos de fêmeas da raça Nelore, ocorridos entre 1950 e 2000, em diferentes regiões do País, sob diferentes condições de criação e de manejo, foram usadas para estudar os componentes de (co)variância e os parâmetros genéticos (herdabilidade e correlação genética) dos pesos das vacas ao desmame (P205), a um ano de idade (P365) e ao sobreano (P550), dos pesos do bezerro ao desmame (P205b), a um ano de idade (P365b) e ao sobreano (P550b), bem como da idade ao primeiro parto (IPPM), da vida produtiva (VPM) e da longevidade, todas em meses (LONGM), do intervalo de partos em dias (INTP), da eficiência reprodutiva (ER), dos índices de produção (IP), de produção metabólico (IPM), de produção somado (IPS) e de produção metabólico somado (IPMS). As estimativas dos componentes de (co)variância foram realizadas por máxima verossimilhança restrita assumindo modelo animal.Analisaram-se os efeitos genéticos diretos, maternos e de ambiente permanente, além de efeitos fixos de fazenda, regime alimentar, condição de criação, ano de nascimento, estação de nascimento e sexo do bezerro. As estimativas de herdabilidade apresentaram-se similares entre as diferentes análises, sendo mais altas (0,24 a 0,75) para P205, P365, P550, P205b, P365b, P550b, IP, IPM, IPPM, VPM e LONGM e mais baixas (0 a 0,10) para ER, INTP, IPS e IPMS. Algumas correlações entre efeito genético materno e as características de crescimento foram negativas. De modo geral, correlações negativas entre LONGM e características de crescimento evidenciam o antagonismo genético entre maturidade precoce e longevidade. Entre LONGM e características de reprodução (IPPM) ou produção (índices de produção), as estimativas foram positivas, evidenciando que a fêmea que permanece no rebanho por mais tempo é aquela que possui os melhores índices reprodutivos e produtivos. Palavras-chave: características produtivas, características reprodutivas, componentes de (co)variância Genetic Parameters of Longevity and Productivity of Nellore FemalesABSTRACT -In order to estimate the (co)variance components, heritabilities and genetic correlations of longevity and herd life in females, informations of 56,413 births of females from a Nellore cattle herd, from 1950 to 2000, under different rearing and management conditions, were used. It was studied from calf: weaning weight (W205C), yearling weight (W365C), weight in 550 days (W550C), from cows: weaning weight (W205), yearling weight (W365) and weight in 550 days (W550), age at first calving (AFC), calving interval (CI), herd life (RL), longevity (LONG), reproductive efficiency (RE), index production (IP), index of metabolic production (IMP), sum of index production (SIP), sum of index metabolic production (SIMP). The analysis were performed using the MTDFREML software, estimating (co)variance components, assuming animal model. Direct genetic, maternal and permanent environmental effects were analyzed. Fixed effects of farm, feeding program, rearing condition, birth calf year, birth calf season and calf sex, ...

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“…Genetic improvement of longevity is difficult to achieve (Essl, 1998). The heritability of longevity is low (Vollema and Groen, 1997;Vukasinovic et al, 2001;Tsuruta et al, 2005), and one must wait for the animal or its relatives to leave the herd before obtaining a direct measurement of herd life and before subsequent genetic evaluation.…”

mentioning

confidence: 99%

Relationships between longevity and conformation traits in Czech Fleckvieh cows

Zavadilová¹,

Němcová²,

Štípková³

et al. 2009

Czech J. Anim. Sci.

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ABSTRACT:The relationships between conformation and longevity traits were analysed in 58 493 Czech Fleckvieh cows first calved from 1994 to 2003. All cows were scored for conformation during the first lactation. Genetic correlations between longevity and conformation traits were estimated by bivariate runs using the VCE 4.0 program for variance component estimation. The values of heritability for conformation traits were in the range from 0.06 to 0.63 and for longevity traits from 0.04 to 0.05. Low or intermediate genetic relationships between recorded linear traits and longevity trait were found. The correlations were lower for functional longevity. Body measurements showed negative genetic correlations with real as well as functional longevity (-0.12 to -0.29). The dairy character negatively correlated with longevity traits (-0.18 to -0.26). The muscularity and udder showed a zero correlation with functional longevity, while the feet and legs were not correlated with real longevity. The highest positive genetic correlations between real longevity and objectively scored linear type traits were found for hock (0.24), rear udder attachment (0.28), fore udder length (0.16) and central ligament (0.11). On the contrary, the correlation between the udder depth and the milk-corrected longevity was positive (0.28) and higher than in the case of real longevity.

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Longevity in dairy cattle breeding: a review

Cited by 119 publications

References 48 publications

Genetic parameters for production, health, fertility and longevity traits in dairy cows

Genetic parameters for production, health, fertility and longevity traits in dairy cows

Parâmetros genéticos de longevidade e produtividade de fêmeas da raça Nelore

Relationships between longevity and conformation traits in Czech Fleckvieh cows

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