Effect of genetic and non-genetic factors on age at first calving in Sahiwal cattle

Singh, Jitendra Kumar; Singh, Vijay Kant; Jha, Alok Kumar Yadavand Amit Kumar

doi:10.18805/ijar.8425

Cited by 7 publications

(9 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Also, two types of housing systems showed no significant effect on TL, LPL and NL (P>0.05), except the lifetime milk yield (P<0.01). Results in the present study are consistent with other reports (Singh et al, 2017;Nilforooshan and Edriss, 2004;Teke andMurat, 2013 andStanojević et al 2015).…”

Section: Resultssupporting

confidence: 94%

“…The performance of dairy cows, in terms of fertility, milk production and longevity, is a key driver of profitability (Dash et al, 2018). A decrease in age at first calving decreases the cost of raising animals to productive life, increases the annual genetic gain and raises the average productive life of the animal (Singh et al, 2013;Singh et al, 2017). The inclusion of longevity traits in the breeding program increases the profitability of dairy herds (Honarvar et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…These traits reflect the fertility, health and overall ability of cows, and not just the level of production (Ratwan et al, 2017). Reproductive traits, such as AFC and calving interval affect economically important traits like longevity, productive life and profitability of cows (Thombre et al, 2002;Do et al, 2013;Singh et al, 2017). These authors pointed out that the AFC should range in between 22.5-23.5 months in order to reach the peak of the productive life, while Nilforooshan and Edriss (2004) stated that AFC of 24 months was optimal for the lifetime milk production.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of age at first calving and other non-genetic factors on longevity and production traits in Holstein cattle under Vojvodina Province condition, Serbia

Kučević

Dragin

Pihler

et al. 2019

IJAR

View full text Add to dashboard Cite

The effect of age at first calving (AFC) and various non-genetic factors i.e. season of calving, farm and system of housing on longevity and production traits were investigated. Longevity traits were studied using total lifetime (TL), length of productive life (LPL) and number of lactations (NL) while production was researched using lifetime milk yield (LMY). Data of 2037 Holstein dairy cows were provided by the main breeding organizations at the Faculty of Agriculture, University of Novi Sad. The average values and variability of examined traits as well as the effect of factors on longevity and production traits were investigated using fixed effect model by general linear model (GLM) procedure in software package Statistica 13. Results showed highly significant effect of the AFC, calving season and farm, on all studied longevity traits (P less than 0.01), while non- significant effect was expressed on lifetime milk yield (P greater than 0.05). The mean of AFC, TL, LPL, NL and LMY for Holstein cows were 27.3, 67.5, 40.2 months, 2.45 and 18798.0 kg, respectively. The maximum values of LPL, NL and LMY were noticed for cows with age at first calving before 23 months of age. The LPL ranged from 47.88 (AFC less than 23 m) to 35.84 m (AFC>29 m) and declined progressively when the AFC is increased, particularly in cows calving at more than 29 m.

show abstract

Section: Resultssupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of age at first calving and other non-genetic factors on longevity and production traits in Holstein cattle under Vojvodina Province condition, Serbia

Kučević

Dragin

Pihler

et al. 2019

IJAR

View full text Add to dashboard Cite

show abstract

“…An important factor in the cost of raising dairy replacements is AFC in these factors. Reproductive traits, such as AFC and calving interval (CI) affect economically important traits like longevity, productive life and profitability of cows (Do et al, 2013;Singh et al, 2017). Longevity is one of the most important traits in dairy cow breeding.…”

Section: Introductionmentioning

confidence: 99%

Association between age at first calving and milk production in first lactation on longevity traits in Holstein cows

et al. 2020

View full text Add to dashboard Cite

The objective of this research was to determine the association between age at first calving (AFC) and milk production in the first lactation of longevity traits for Holstein cows. The research was conducted on 2307 cows raised on 4 farms in AP Vojvodina. The cows were culled in the period from 2017 to 2018. The cows belonged to the group of Holstein Friesian breed of cattle. Cow longevity was observed using three parameters: number of lactations (NL), lifetime milk yield (LMY) and length of productive life (LPL). The research involved the influence of the farm on which the animals realized their production, the season of first calving. A mean value obtained for the length of productive life in the analysed population was 1207 days (3.30 years on average). During this period the animals on average realized 2.45 lactations and produced on average 18798 kg milk. All studied traits showed a high level of variability. From these data, the study sought to determine the influence of factors on the traits of longevity, our research present that studied factors showed high statistical significance on these traits except in the case of the season of first calving where a statistical significance effect wasn't observed. The season of first calving did not affect the animal traits for longevity and, generally, didn't affect the calving interval. Regarding the obtained correlation data between age at first calving and length of productive life, it can be concluded that belated AFC leads to reduced reproductive performance.

show abstract

“…A una menor edad al primer parto disminuye el costo de la cría, permite adelantar el ingreso a la vida productiva, aumenta la ganancia genética anual y eleva el promedio de vida productiva del animal (Singh et al, 2013;Singh et al, 2017). Sin embargo, también la inclusión de rasgos de longevidad como criterio de selección aumentaría la rentabilidad de los rebaños lecheros (Honarvar et al, 2010).…”

Section: Discussionunclassified

Caracterización multivariada de la eficiencia productivo-reproductiva y edad al primer parto en vacas Holstein

Marini

Biga

Dimasso³

2021

Agron. Mesoam.

View full text Add to dashboard Cite

Introducción. La evaluación de la eficiencia productiva debe estar acompañada por indicadores integrales para valorar el comportamiento de las vacas lecheras en los sistemas de pastoreo. Objetivo. Identificar en un rodeo de vacas lecheras Holstein agrupadas por su edad al primer parto, las de mayor eficiencia en sistemas de pastoreo, con base en una caracterización multivariada en indicadores productivos y reproductivos. Materiales y métodos. Se utilizaron datos retrospectivos de 1785 vacas primíparas de raza Holstein entre los años 1999-2016, en dos establecimientos comerciales pertenecientes a la empresa Los Ángeles - Argentina, las que se dividieron en tres grupos por su edad al primer parto: Grupo 1 - 750 días, Grupo 2 - 840 días y Grupo 3 - 1098 días. Las variables vida productiva total, producción total de leche, índice de leche e intervalo entre partos promedio se utilizaron asociadas a la edad al primer parto mediante la técnica multivariada de componentes principales. Resultados. No se observaron agrupamientos asociados al grupo de edad al primer parto. Los dos primeros componentes principales explicaron el 92,9 % de la variancia total observada. Se pudo definir cuatro cuadrantes representando todas las combinaciones entre los valores positivos y negativos. La distribución de las vacas de los tres grupos en los cuatro cuadrantes resultó homogénea (x2=6,291; p=0,391). La distribución por cuadrante, independientemente del Grupo de edad al primer parto fue de: Cuadrante I (52/150, 34,7 %), Cuadrante II (42/150; 28,0 %), Cuadrante III (28/150; 18,7 %) y Cuadrante IV (28/150; 18,7 %). Conclusión. Las vacas ubicadas en el Cuadrante II (valores negativos de la CP1 y positivos de la CP2), fueron las eficientes al sistema de pastoreo, mostraron mayor longevidad con niveles productivos compatibles con las limitaciones del sistema y un eficiente comportamiento reproductivo.

show abstract

Effect of genetic and non-genetic factors on age at first calving in Sahiwal cattle

Cited by 7 publications

References 11 publications

Effect of age at first calving and other non-genetic factors on longevity and production traits in Holstein cattle under Vojvodina Province condition, Serbia

Effect of age at first calving and other non-genetic factors on longevity and production traits in Holstein cattle under Vojvodina Province condition, Serbia

Association between age at first calving and milk production in first lactation on longevity traits in Holstein cows

Caracterización multivariada de la eficiencia productivo-reproductiva y edad al primer parto en vacas Holstein

Contact Info

Product

Resources

About