Economic weights in rabbit meat production

Macas, Luis Favian Cartuche; Pascual, M.; Gómez, Ernesto A.; Blasco, A.

doi:10.4995/wrs.2014.1747

Cited by 73 publications

(76 citation statements)

References 18 publications

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“…Economic values had been calculated in rabbit breeding previously for prolificacy and growth traits (Armero and Blasco 1992;Prayaga and Eady 2000;Cartuche et al 2014), but so far no index was developed including reproductive and carcase traits simultaneously. Pesek and Baker (1969) created a 'desired gain' index by modifying the indexing theory and added substitute desired gains which made it possible to improve the traits in the breeding goal without the exact knowledge of the economic values.…”

Section: Introductionmentioning

confidence: 99%

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

Ács

Szendrő

Garreau

et al. 2018

Italian Journal of Animal Science

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Genetic parameters for 21-d litter weight (LW21) and thigh muscle volume (TMV) were estimated, and based on these traits a two-trait selection index was created with the purpose of increasing the efficiency of the Pannon White rabbits' breeding programme. Litter weight at 21 d of age (LW21, n ¼ 22,002) and thigh muscle volume (TMV, n ¼ 8124) measurements (based on computed tomography -CT) were analysed that were recorded between 1992 and 2016. The evaluated animals were reared in 4178 litters and the total number of rabbits involved in the pedigree file was 14,124. LW21 and TMV records were analysed jointly in a two-trait animal model. The estimated heritability for LW21 and TMV were 0.10 ± 0.01 and 0.21 ± 0.02, respectively, and the estimated genetic correlation between these traits was À0.24 ± 0.07. The common environmental effect had the same magnitude (0.10 ± 0.01) as the additive genetic effect. The created selection index constructed to have 50 and 50% contribution of the measured traits. Application possibility of the created index was tested on a given kindling batch. In this case, the first step of the selection procedure was performed either according to the current breeding programme (based on the LW21 breeding values) or based on the two trait selection index. The second step of selection was not changed (based on the TMV breeding values). The consequences of using index scores instead of the regular procedure were obtaining 27.8% higher average breeding value for TMV and 11.4% lower average breeding value for LW21. These results suggest that introduction of the index may improve economic efficiency. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 99%

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

Ács

Szendrő

Garreau

et al. 2018

Italian Journal of Animal Science

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“…The depreciation rates were calculated for building on 30 years and for cages on 15 years according to (Cartuche, Pascual, Gómez, & Blasco, 2014). The fixed costs were the sum of rabbit price, veterinary services, labour, water, electricity, building and equipment depreciation, and these parameters were considered as fixed costs as they were common to all groups.…”

Section: Costsmentioning

confidence: 99%

Influence of multi‐enzyme preparation supplemented with sodium butyrate on growth performance blood profiles and economic benefit of growing rabbits

El-Aziz

El-Kasrawy

Ghanima

et al. 2019

Animal Physiology Nutrition

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The present study was carried out to explore the impacts of dietary supplementation of enzyme mixture with sodium butyrate on the growth performance, carcass traits, blood profile and economic benefit in two breeds of weanling rabbits adapted to survive in Egypt (New Zealand White and Rex). One-hundred and twenty weaned male rabbits (New Zealand White and Rex) of 6 weeks of age and 770.5 ± 20 g body weight were allotted randomly into four groups in a factorial arrangement. The obtained results indicated that there were non-significant differences in all growth performance traits, blood profile and economic parameters due to the breed effect.However, there were significant differences in most of carcass traits due to the breed effect except total giblets and New Zealand White breed showed the highest value of these parameters including dressing % (p < .01), forequarter and loin % (p < .001) and hindquarter % (p < .003) compared with Rex breed counterparts. The effect of the treatment and its interaction with the breed significantly (p < .05) improved body weight gain, feed consumption and carcass traits (percentage of dressing, forequarter, hind quarter and lion). However, final body weight and feed conversion ratio were not significantly influenced. Supplementing a diet with treatment significantly decreased blood triglycerides, cholesterol and the ratio between albumin and globulin (A/G ratio), while increased blood total protein and globulin. Although higher feed cost and total costs in treated groups than control ones in each breed, they showed higher total return and net return. Rex non-treated rabbit breed showed the lowest profitability measures compared with other groups. In conclusion, dietary supplementation of multi-enzyme with sodium butyrate is highly recommended in growing rabbits due to their beneficial effects on the growth performance and profitability. K E Y W O R D Sblood components, economic benefits, growing rabbits, multi-enzymes, sodium butyrate | 187 EL-AZIZ Et AL. How to cite this article: El-Aziz AHA, El-Kasrawy NI, Abo Ghanima MM, et al. Influence of multi-enzyme preparation supplemented with sodium butyrate on growth performance blood profiles and economic benefit of growing rabbits.

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“…Litter size has a great economic importance in rabbit farms (Cartuche et al, 2014). It is affected mainly by ovulation rate and prenatal survival rate, being the latter around 0.35 both in rabbit does and in sows (Blasco et al, 1993).…”

Section: Introductionmentioning

confidence: 99%

Effect of dietary supplementation with arginine and glutamine on the performance of rabbit does and their litters during the first three lactations

Delgado

Abad-Guamán

Mata

et al. 2017

Animal Feed Science and Technology

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The aim of this work was to study whether the dietary supplementation with arginine (Arg) and glutamine (Gin) or the combination of both influence the digestibility, body composition, and reproductive performance of rabbit does during the first three parturitions. A Control diet containing 29.8 g nitrogen (N), 313 g aNDFom per kg DM and 1.85 g digestible N/MJ digestible energy (DN/DE) was formulated, and another 3 diets were obtained by adding (gAg) 4 Arg, 4 Gin and a mixture of 4 Arg and 4 of Gin to the Control diet. Eighty nulliparous rabbit does were randomly assigned to the diets (20/diet) before the first insemination. After each parturition litter size were homogenized within each treatment and does inseminated lid later. Chemical composition and energy content of rabbit does and their performance, litter growth and milk production were measured between birth and weaning (25 d) along three parturitions. Amino acid supplementation increased the DN content (P = 0.015) and tended to increase the DN/DE ratio compared to Control group {P = 0.077) leading to an increase of digestible N intake during lactation (P = 0.004). In this period, Gin group had a higher DE intake compared to Control and Arg + Gin groups {P = 0.038). Total number kits born per litter tended to increase in rabbit does supplemented with Arg and Gin, compared to Control and Arg + Gin groups {P = 0.095), but no effect of treatments on the number of weaned rabbits was observed (P = 0.15). Single supplementation of Arg and Gin increased the weight of the litters at 20 and 25 d respect to Control and Arg + Gin groups {P < 0.021). Amino acid supplementation did not affect the milk production (P = 0.16), although it was positively correlated with the DE and DN intake (P < 0.001). There were no significant effects of treatments on body weight, chemical composition and energy content of rabbit does, but does supplemented with Arg or Gin tended to have a higher body energy content at the third insemination and at weaning than those from Control and Arg + Gin groups (P < 0.099). Amino acid supplementation did not modify the replacement rate of rabbit does. In conclusion, the single supplementation of Arg and Gin had a positive effect on the weight of litters at weaning and litter size at birth, but no additive effect was observed for the combined supplementation of Arg and Gin.

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Economic weights in rabbit meat production

Cited by 73 publications

References 18 publications

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

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

Influence of multi‐enzyme preparation supplemented with sodium butyrate on growth performance blood profiles and economic benefit of growing rabbits

Effect of dietary supplementation with arginine and glutamine on the performance of rabbit does and their litters during the first three lactations

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