Genetic parameter estimates of growth traits of indigenous pigs in Northern Ghana

Darfour-Oduro, K. A.; Naazie, A.; Ahunu, B.K.; Aboagye, G.S.

doi:10.1016/j.livsci.2009.04.007

Cited by 17 publications

(20 citation statements)

References 7 publications

(15 reference statements)

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“…The genetic correlation of BW with 56dW was lowest and negative (−0.158 ± 0.29) indicated that selection for better body weights at birth may not result in better body weights at weaning. In contradiction to our findings, Kaufmann et al (2000), Ilatsia et al (2008), Darfour-Oduro et al (2009), and Pandey and Singh (2010) reported that selection to improve BW would be associated with favorable changes in 56dW because of positive genetic correlation between BW and 56dW. Estimates for residual correlations between pre-weaning body weights of piglets at different ages ranged from 0 for BW-42dW to 0.843 ± 0.02 for 42dW-56dW (Table 2).…”

Section: Correlation Estimatescontrasting

confidence: 99%

“…Solanes et al (2004) used model 6 of our investigation and presented similar estimate of permanent litter effect (0.21) but had a lower estimate of direct heritability (0.12) and maternal heritability (0.09). Darfour-Oduro et al (2009) reported that direct estimate of heritability increased for weaning weights of Indigenous Ghanaian piglets as compared to direct estimate of heritability for BW, but maternal hetitabilities were always higher than direct heritabilities for both BW and weaning weights. Our finding, higher estimate of direct heritability at weaning age, was in agreement with the findings of Kaufmann et al (2000), Solanes et al (2004), and Chimonyo et al (2006Chimonyo et al ( , 2008.…”

Section: Th-day Body Weight/weaning Weight (56dw)mentioning

confidence: 97%

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Estimation of variance and genetic parameters for pre-weaning weights of individualLandrace X Desisynthetic piglets

Mondal

Kumar

Dubey

et al. 2014

Journal of Applied Animal Research

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Variances and genetic parameters were estimated for birth weight (BW), 14 day body weight (14dW), 28 day body weight (28dW), 42 day body weight (42dW) and weaning weight or 56 day body weight (56dW) in the Landrace X Desi synthetic piglet population reared under sub-temperate agro climatic region of India. The data were analyzed using restricted maximum likelihood (REML) fitting six animal models with various combinations of direct and maternal effects. Estimates of genetic and permanent environmental correlations were obtained using bivariate analysis of an animal model and computed with the DFREML program. A log likelihood ratio test was used to select the most appropriate univariate model for each trait. The direct estimates of heritability were 0.43 ± 0.04, 0.31 ± 0.04, 0.35 ± 0.05, 0.40 ± 0.06, and 0.49 ± 0.06 for BW, 14dW, 28dW, 42dW, and 56dW, respectively and it increased with age from 14dW to 56dW. The permanent litter effect progressively decreased and was minimum at 56dW, ranged from 0.21 ± 0.06 to 0.34 ± 0.04. Further, maternal genetic heritability was the highest, ranging from 0.16 ± 0.07 (model 5) to 0.18 (model 6), at age of weaning and the lowest for BW, from 0.04 ± 0.03 (model 5) to 0.06 (model 6). The presence of permanent litter effect was more important since it increased the accuracy of last three models (models 4-6) significantly over the first three models (models 1-3) without permanent litter effect. The selection of 56dW would be more reliable for genetic progress rather than the selection of BW. The direct additive genetic correlation (r a ) between BW and 56dW was −0.158 ± 0.29 which revealed that higher BW may not result for favorable changes in weaning weights which was in contradiction to many earlier reports.

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Section: Correlation Estimatescontrasting

confidence: 99%

Section: Th-day Body Weight/weaning Weight (56dw)mentioning

confidence: 97%

Estimation of variance and genetic parameters for pre-weaning weights of individualLandrace X Desisynthetic piglets

Mondal

Kumar

Dubey

et al. 2014

Journal of Applied Animal Research

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show abstract

“…Knowledge of genetic parameters is crucial for designing animal breeding programs, predicting response to selection and monitoring genetic progress for targeted population (Darfour‐Oduro, Naazie, Ahunu, & Aboagye, ). Five economically important sow efficiency‐related traits (i.e., TNB, NBA, LWF, FI and AFF) were considered in this study.…”

Section: Discussionmentioning

confidence: 99%

Estimation of genetic parameters for reproductive traits in connectedness groups of Duroc, Landrace and Yorkshire pigs in China

Zhang

Olasege

et al. 2019

J Animal Breeding Genetics

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The objective of this study was to estimate group‐ and breed‐specific genetic parameters for reproductive traits in Chinese Duroc, Landrace, and Yorkshire populations. Records for reproductive traits between April 1998 and December 2017 from 92 nucleus pig breeding farms, which were involved in the China Swine Genetic Improvement Program, were analysed. Due to weak genetic connectedness across all farms, connectedness groups consisting of related farms were used. Three, two and four connectedness groups for Duroc, Landrace and Yorkshire were firstly established according to the genetic connectedness rating among farms. For each connectedness group a five‐trait animal model was implemented, and via restricted maximum likelihood procedure the genetic parameters were estimated for five reproductive traits i.e., total number born (TNB), number born alive (NBA), litter weight at farrowing (LWF), farrowing interval (FI) and age at first farrowing (AFF). The average of heritabilities among connectedness groups ranged from .01 (for FI in Yorkshire) to .30 (for AFF in Duroc). Estimates of repeatability for litter traits ranged from .14 to .20 and were consistent for each breed, and for FI, the estimates varied from .01 to .11 across breeds and groups. The estimated genetic correlations among litter traits (i.e., TNB, NBA and LWF) were all significantly high (>.56) and similar across breeds. Averaged genetic correlations over three breeds were −.25, −.27, −.18, −.04, −.10, −.02, and .28 for FI‐TNB, FI‐NBA, FI‐LWF, AFF‐TNB, AFF‐NBA, AFF‐LWF and FI‐AFF, respectively. The standard errors of the estimates were all very low (<0.01) in most situations. Results from this study suggest that selection based on TNB which is currently used in dam line selection index can improve NBA and LWF simultaneously. However, care should be taken on FI and AFF as they are both greatly influenced by non‐genetic factors such as management and measurement.

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“…Regarding influence of genetic traits on growth, local piglet breed of Benin would be genetically similar to Ashanti Black pig. Indeed Darfur Oduro et al (2009) had shown that maternal heritability of this breed was higher than direct heritability for BW and pre-weaning ADG. They showed that these parameters were influenced by the same genes and maternal additive genetic effect is an important component of variation in growth traits.…”

Section: Discussionmentioning

confidence: 99%

“…They showed that these parameters were influenced by the same genes and maternal additive genetic effect is an important component of variation in growth traits. Piglets of this breed with genetic capacity for high BW have better genetic capacity for growth during lactation and sows with genetic capacity to give birth to heavier piglets have a high pre-weaning growth rate in their litters (Darfour-Oduro et al, 2009). Thus it appears that BW is the most important determinant of the pre-weaning growth of local piglets breed.…”

Section: Discussionmentioning

confidence: 99%

Colostrum immune quality of local sow breed in Benin: Growth, survival and acquisition of passive immunity in new-born piglet

Agbokounou¹,

Bengaly²,

Karim³

et al. 2017

Afr. J. Biotechnol.

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The objective of this study was to evaluate husbandry practices of pregnant sows, immunoglobulin G (IgG) concentration in colostrum of sow from local breed of Benin, their transfer to litter and the survival and growth of piglets until 42 days of age within traditional farms pig. Results showed that sows were raised according to traditional practices characterized by sustainable or precarious housing without any hygiene measures. They were fed with forages and by-products arising from traditional and industrial food-processing. Reproductive performance allowed by these farming practices remained weak. The litter size obtained was 5.5 piglets and was a feature of the small less prolific West African local pig. The observed number of piglets weaned at 42 days of age was 5 and the average mortality rate from birth to 42 days of life was 15%. The piglets were characterized by low average birth weight at 439 g, low average intra-litter weight gain at 24 h (38 g), body weight at 42 days of 2119 g, an Average Daily Gain (ADG) of 40 g/day and a Relative ADG (RADG) of 30 g/day.kg. The mortality was negatively associated (P < 0.05) with the birth weight and the weight gain at 24 h. The weight gain within 0-42 days was positively associated with the birth weight (r = 0.59; P < 0.001). The ADG from 0 to 42 days and from 1-42 days were positively correlated respectively with the birth weight (r = 0.55; P < 0.001) and the weight gain at 24 h (r = 0.41; P < 0.005). Despite weak growth performance of the piglets before weaning, the sows were characterized by adequate IgG concentration in the colostrum collected at 24 h after the onset of parturition (22 mg/ml). However, the serum IgG levels at 7 days of life of the piglets were low (2 mg/ml). Finally, the study demonstrated that sows from local breed produce colostrum with adequate IgG concentration. However, transfer of these antibodies to piglets was low. Feeding of sows with forages may be beneficial in improving the immunological quality of colostrum in local pig breed. Finally, both weight gain at 24 h and birth weight were important to predict survival and growth of suckling piglets.

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Genetic parameter estimates of growth traits of indigenous pigs in Northern Ghana

Cited by 17 publications

References 7 publications

Estimation of variance and genetic parameters for pre-weaning weights of individualLandrace X Desisynthetic piglets

Estimation of variance and genetic parameters for pre-weaning weights of individualLandrace X Desisynthetic piglets

Estimation of genetic parameters for reproductive traits in connectedness groups of Duroc, Landrace and Yorkshire pigs in China

Colostrum immune quality of local sow breed in Benin: Growth, survival and acquisition of passive immunity in new-born piglet

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