Application possibilities of selection indices in Pannon White rabbits’ breeding programme

Ács, Virág; Szendrő, Katalin; Garreau, Hervé; Donkó, Tamás; Matics, Zsolt; Nagy, István

doi:10.1080/1828051x.2018.1436007

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…The idea behind the present research is to exploit computed tomography (CT) to perform a selection of different populations of rabbits in function of the desired productive/commercial target [ 9 ]. The genetic selection of rabbits by exploiting CT has the advantage of allowing an effective evaluation of the body composition in vivo, avoiding animal slaughtering.…”

Section: Introductionmentioning

confidence: 99%

Rabbits Divergently Selected for Total Body Fat Content: Changes in Proximate Composition and Fatty Acids of Different Meat Portions

Cullere

Szendrő

Matics

et al. 2022

Animals

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The present research studied the potential of a four-generation divergent selection (Pannon maternal rabbit lines) based on the total body fat content to create two rabbit lines with different meat attributes: a Fat line to deliver greater amounts of healthy fatty acids for newborns and infants, and a Lean line intended to provide lean meat for everyday consumption. Selection was based on the fat index calculated in 10-week-old live rabbits by means of computed tomography (CT). For each generation, 60 rabbits/line were fed ad libitum with commercial pellet from weaning (5 weeks) to slaughter (11 weeks). A total of 15 rabbits/line were randomly selected for meat quality evaluations: the longissimus thoracis et lumborum muscles (LTLs), hind legs (HLs), forelegs (FLs) and abdominal wall (AW) were analyzed for their proximate composition and fatty acid (FA) profile. FA contents were also calculated. Results highlighted that it was possible to obtain leaner meat for everyday consumption in most meat portions starting from generation 4 (7.93 vs. 11.9, 5.10 vs. 5.98 and 7.26 vs. 10.9 g of lipids/100 g of meat in Lean and Fat groups for the FLs, HLs and AW, respectively). The sole exception was the LTLs, which were not affected by the divergent selection. The total PUFA amount increased in FL and AW (p < 0.05) portions of the Fat line only, attributable to a greater n-3 amount (151 vs. 216 and 73 vs. 143 mg/100 g of meat in Lean and Fat groups for the FLs and AW, respectively).

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Section: Introductionmentioning

confidence: 99%

Rabbits Divergently Selected for Total Body Fat Content: Changes in Proximate Composition and Fatty Acids of Different Meat Portions

Cullere

Szendrő

Matics

et al. 2022

Animals

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“…However, a significant proportion of rabbit meat producers in Ukraine are still concentrated in the private sector and use the genetic resources of domestic breeds, which necessitates research to increase the meat productivity of rabbits [7][8][9][10]. Purebred rabbit breeding requires the rabbit breeder to constantly analyze the performance of families and lines using the latest methods for assessing the breeding value of animals, taking into account the economic component, which determines the profitability of the industry [5,11].…”

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confidence: 99%

“…A systematic approach in the optimization of breeding programs and the search for optimal animal selection options leads to increased efficiency of the breeding process [2,11].…”

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confidence: 99%

The nature of inheritance of selection attributes and realization of the potential productivity of rabbits of breed Poltavske sriblo

Baschenko¹,

Bojko²,

Gonchar³

et al. 2020

Visnyk agrarnoi nauky

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Goal. To find out the nature of inheritance of selection attributes and the level of realization of the potential productivity of rabbits of breed Poltavske sriblo. Methods. The study was conducted based on the research rabbit farm of Cherkasy research station of bioresources of NAAS on the livestock of rabbits of breed Poltavske sriblo. To achieve the goal group of animals was formed and analyzed in terms of several generations. Results. The data indicate that for pure breeding, because of the small variability of the studied signs, a probable correlation was fixed in values of the width of the loin (r=0.26; P>0.99). The analysis of the index of the phenotypic correlation between selection attributes in the output of livestock and progeny indicates a direct or inverse relationship between the signs (-0.10...0.10, P<0.95). The coefficients of inheritance of selection attributes have also been found reliable in terms of live weight at the age of 120 days and an indicator of the width of the waist in adults (h2=0.27 -0.52; P>0.99 -0.999). For the rest of the studied indicators ratios have been established, which amounted to 0.19 and 0.27, but they were not statistically significant (P<0.95). Research on the productivity of rabbits showed that in the created population the degree of implementation of selection-genetic potential of productivity was 93.7 -99.9% depending on the examined attribute. That value was maximal in terms of the width of the back (99.86%). Conclusions. The results of the study of the exterior indicators of the body and live weight of rabbits of the source generation and posterity have witnessed a high level of realization of the genetic potential of animals in the created population -93.7 -99.9% depending on the studied attribute. The coefficients of inheritance of selection attributes were significant in terms of live weight at the age of 120 days and an indicator of the width of the waist in adults (h2=0.27 -0.52; P>0.99-0.999), which provides the prerequisites for further breeding activities to enhance meat productivity.

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A Selection Index for Improving the Carcass Traits in the Pannon Large Rabbit Breed

Ács

Nagy

Donkó

2019

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Loin muscle volume and hind leg muscle volume measured by computer tomography are economically valuable traits in rabbit breeding. Hence, genetic parameters were calculated to these new selection criteria, and a two-trait selection index was created in order to modify the current selection process of the Pannon large rabbit breed. The evaluated animals (n = 312) were randomly selected from 2014 and 2018, and the total number of animals in the pedigree file was 2758. Loin muscle volume (LMV) and hind leg muscle volume (HLV) were analyzed in a two-trait animal model. The estimated heritability for LMV was h 2 = 0.4 and h 2 = 0.42 for the HLV respectively. The selection index was created with desired gains by improving each trait in the selection criteria with one additive genetic standard deviation and the final index was Z transformed. Correlation coefficients between the index and the examined traits were high, 0.86 for LMV and 0.87 for HLV, thus this method could be announced into the breeding program.

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Application possibilities of selection indices in Pannon White rabbits’ breeding programme

Cited by 4 publications

References 13 publications

Rabbits Divergently Selected for Total Body Fat Content: Changes in Proximate Composition and Fatty Acids of Different Meat Portions

Rabbits Divergently Selected for Total Body Fat Content: Changes in Proximate Composition and Fatty Acids of Different Meat Portions

The nature of inheritance of selection attributes and realization of the potential productivity of rabbits of breed Poltavske sriblo

A Selection Index for Improving the Carcass Traits in the Pannon Large Rabbit Breed

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