Evaluation of feeding behaviour traits to predict efficiency traits in pigs using partial least square regression

Ewaoluwagbemiga, Esther Oluwada; Bee, Giuseppe; Kasper, Claudia

doi:10.1016/j.animal.2021.100351

Cited by 3 publications

(2 citation statements)

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“…The experiment started at this stage and all pigs learned to access the automatic feeders, which allows monitoring of feed intake. The automatic feeder recorded all feeder visits and feed consumption per visit, from which the total feed intake of each pig was calculated (Ewaoluwagbemiga et al, 2021). Every week, pigs were weighed individually, and, once the pig reached the target start weight of 20 kg, they were allocated to growerfinisher pens and the experimental treatments were started.…”

Section: Animals and Data Setsmentioning

confidence: 99%

“…The experiment started at this stage and all pigs learned to access the automatic feeders, which allows monitoring of feed intake. The automatic feeder recorded all feeder visits and feed consumption per visit, from which the total feed intake of each pig was calculated [29]. The protein content of feed was monitored during production by near-infrared spectroscopy for each 500 kg batch.…”

Section: Animals and Data Setsmentioning

confidence: 99%

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Genetic analysis of protein efficiency and its association with performance and meat quality traits under a protein-restricted diet

Ewaoluwagbemiga

Bee

Kasper

2022

Preprint

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Background An essential component in the development of a sustainable pig production is the reduction of nitrogen excretion in fattening pigs. Pig feeds typically contain high levels of dietary crude protein, and due to incomplete conversion to muscle tissue, excess nitrogen is excreted, resulting in environmental problems such as nitrate pollution and greenhouse gas emissions. Therefore, improving protein efficiency (PE), i.e. the proportion of dietary protein that remains in the carcass and is thus available for meat production, is desirable. This study aimed to estimate the heritability (h2) of PE and its genetic correlations with phosphorus efficiency, three performance, seven meat quality and two carcass quality traits when pigs were fed a 20% protein-restricted diet, using a total of 1,071 Swiss Large White pigs. To determine PE, the intake of feed with known nutrient content was accurately recorded for each pig and the nitrogen and phosphorus content of the carcass was determined using dual-energy X-ray absorptiometry. Genetic analysis was performed with a Bayesian animal model. Results We found an average PE of 0.39 ± 0.04 and a heritability of 0.43 (0.29, 0.58). PE showed a low genetic correlation with phosphorus efficiency (0.12 [0.04, 0.21]) and moderate genetic correlations with feed conversion ratio (-0.40 [-0.50, -0.30]), average daily gain (-0.34 [-0.41, -0.23]) and average daily feed intake (-0.61 [-0.69, -0.50]). The genetic correlations between PE and meat quality traits were not significantly different from zero except for meat redness (-0.40 [-0.58, -0.09]) and meat yellowness (-0.27 [-0.45, -0.04]). In contrast, feed conversion ratio showed unfavourable genetic correlations with meat colour, drip loss and cooking loss. Conclusions Protein efficiency is heritable and can be considered in breeding to reduce the environmental impact of pig production without influencing meat quality traits, but the potential for coselecting improved phosphorus efficiency is rather small. Selecting nutrient efficiencies might be a more suitable strategy to reduce nitrogen pollution from manure than focusing on FCR because the latter shows genetic antagonism with meat quality in our population.

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Section: Animals and Data Setsmentioning

confidence: 99%

“…The experiment started at this stage and all pigs learned to access the automatic feeders, which allows monitoring of feed intake. The automatic feeder recorded all feeder visits and feed consumption per visit, from which the total feed intake of each pig was calculated [29]. The protein content of feed was monitored during production by near-infrared spectroscopy for each 500 kg batch.…”

Section: Animals and Data Setsmentioning

confidence: 99%

Genetic analysis of protein efficiency and its association with performance and meat quality traits under a protein-restricted diet

Ewaoluwagbemiga

Bee

Kasper

2022

Preprint

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Animal board invited review: Heritability of nitrogen use efficiency in fattening pigs: Current state and possible directions

Kasper

2024

animal

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Genetic analysis of protein efficiency and its association with performance and meat quality traits under a protein-restricted diet

2023

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Background An essential component in the development of sustainable pig production is the reduction of nitrogen excretion in fattening pigs. Pig feeds typically contain high levels of dietary crude protein, and due to incomplete conversion to muscle tissue, excess nitrogen is excreted, resulting in environmental problems such as nitrate pollution and greenhouse gas emissions. Therefore, improving protein efficiency (PE), i.e., the proportion of dietary protein that remains in the carcass, is desirable. The aim of this study was to estimate the heritability (h2) of PE and its genetic correlations with phosphorus efficiency, three performance, seven meat quality and two carcass quality traits when pigs were fed a 20% protein-restricted diet, using 1071 Swiss Large White pigs. To determine PE, the intake of feed with known nutrient content was accurately recorded for each pig and the nitrogen and phosphorus content of the carcass was determined using dual-energy X-ray absorptiometry. Results We found an average PE of 0.39 ± 0.04 and a heritability of 0.54 ± 0.10. PE showed a high genetic correlation with phosphorus efficiency (0.61 ± 0.16), moderate genetic correlations with feed conversion ratio (− 0.55 ± 0.14) and average daily feed intake (− 0.53 ± 0.14), and a low genetic correlation with average daily gain (− 0.19 ± 0.19). While PE has favourable genetic correlations with the performance traits and some meat quality traits, there is a potentially unfavourable correlation of PE with meat colour (redness [rg = − 0.27 ± 0.17]; yellowness [rg = − 0.31 ± 0.18]) and intra-muscular fat (IMF; rg = − 0.39 ± 0.15). Feed conversion ratio (FCR) also showed unfavourable genetic correlations with meat lightness, redness yellowness, IMF and cooking loss. Conclusions PE is a heritable trait that can be considered in breeding programs to reduce the environmental impact of pig production. We found no strong negative correlation of PE with meat quality traits, and that there is potential to indirectly select for improved phosphorus efficiency. Selecting nutrient efficiencies might be a more suitable strategy to reduce nitrogen pollution from manure than focusing on FCR because the latter also shows genetic antagonism with some meat quality traits in our population.

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Evaluation of feeding behaviour traits to predict efficiency traits in pigs using partial least square regression

Cited by 3 publications

References 15 publications

Genetic analysis of protein efficiency and its association with performance and meat quality traits under a protein-restricted diet

Genetic analysis of protein efficiency and its association with performance and meat quality traits under a protein-restricted diet

Animal board invited review: Heritability of nitrogen use efficiency in fattening pigs: Current state and possible directions

Genetic analysis of protein efficiency and its association with performance and meat quality traits under a protein-restricted diet

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