Rabbit Lines Divergently Selected for Total Body Fat Content: Correlated Responses on Growth Performance and Carcass Traits
Abstract
:Simple Summary
Abstract
1. Introduction
2. Materials and Methods
2.1. Animals, Computed Tomography Measurement, Housing and Feeding
2.2. Slaughter Procedure
2.3. Statistical Analysis
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Generation | Line | Female | Male | ||||||
---|---|---|---|---|---|---|---|---|---|
CT Scanned | Selected | CT Scanned | Selected | ||||||
n | Fat Index | n | Fat Index | n | Fat Index | n | Fat Index | ||
1 | Lean | 209 | 75.2 ± 20.0 | 72 | 54.4 ± 9.2 | 142 | 68.0 ± 18.2 | 35 | 47.0 ± 9.9 |
Fat | 72 | 96.4 ± 11.7 | 34 | 89.7 ± 10.7 | |||||
2 | Lean | 96 | 68.8 ± 19.3 | 67 | 59.2 ± 10.9 | 80 | 69.2 ± 18.8 | 40 | 57.0 ± 13.2 |
Fat | 105 | 75.6 ± 17.6 | 64 | 86.0 ± 12.0 | 80 | 78.5 ± 18.8 | 40 | 90.4 ± 14.9 | |
3 | Lean | 180 | 61.5 ± 15.5 | 61 | 49.1 ± 10.5 | 149 | 65.8 ± 14.8 | 47 | 56.6 ± 8.97 |
Fat | 187 | 75.5 ± 16.7 | 61 | 90.6 ± 10.8 | 142 | 78.5 ± 17.3 | 47 | 86.6 ± 13.3 | |
4 | Lean | 105 | 77.4 ± 16.3 | 55 | 67.5 ± 11.7 | 112 | 75.0 ± 15.9 | 44 | 63.7 ± 10.7 |
Fat | 104 | 101 ± 18.5 | 57 | 111 ± 15.1 | 108 | 94.5 ± 19.9 | 42 | 109 ± 15.6 |
Lean | Fat | p-Value | |
---|---|---|---|
N of rabbits | 60 | 60 | |
Body weight, g | |||
week 5 | 892 ± 15.5 | 873 ± 14.4 | 0.348 |
week 6 | 1288 ± 19.4 | 1252 ± 18.4 | 0.177 |
week 7 | 1624 ± 23.3 | 1593 ± 21.9 | 0.329 |
week 8 | 1920 ± 27.2 | 1874 ± 25.8 | 0.223 |
week 9 | 2164 ± 29.6 | 2125 ± 28.5 | 0.344 |
week 10 | 2402 ± 33.5 | 2371 ± 32.3 | 0.493 |
week 11 | 2607 ± 37.4 | 2564 ± 35.8 | 0.403 |
Daily weight gain, g/day | |||
week 5–6 | 49.5 ± 1.00 | 47.5 ± 0.96 | 0.140 |
week 6–7 | 47.8 ± 1.08 | 48.7 ± 1.00 | 0.544 |
week 7–8 | 42.8 ± 1.12 | 40.3 ± 1.09 | 0.193 |
week 8–9 | 35.0 ± 1.13 | 35.9 ± 1.12 | 0.549 |
week 9–10 | 33.9 ± 1.25 | 35.1 ± 1.24 | 0.492 |
week 10–11 | 34.6 ± 1.32 | 32.4 ± 1.31 | 0.255 |
weeks 5–11 | 40.9 ± 0.71 | 40.3 ± 0.69 | 0.557 |
Lean | Fat | p-Value | |
---|---|---|---|
N of cages | 20 | 20 | |
Feed intake, g/day | |||
week 5–6 | 129 ± 3.09 | 131 ± 3.09 | 0.677 |
week 6–7 | 131 ± 3.77 | 137 ± 3.77 | 0.257 |
week 7–8 | 152 ± 2.44 | 158 ± 2.44 | 0.075 |
week 8–9 | 159 ± 2.51 | 164 ± 2.51 | 0.175 |
week 9–10 | 160 ± 3.49 | 171 ± 3.49 | 0.032 |
week 10–11 | 167 ± 3.63 | 170 ± 3.63 | 0.564 |
weeks 5–11 | 150 ± 2.21 | 155 ± 2.21 | 0.085 |
Feed conversion ratio | |||
week 5–6 | 2.59 ± 0.09 | 2.71 ± 0.09 | 0.318 |
week 6–7 | 2.63 ± 0.07 | 2.79 ± 0.07 | 0.084 |
week 7–8 | 3.58 ± 0.07 | 3.95 ± 0.07 | <0.001 |
week 8–9 | 4.52 ± 0.10 | 4.70 ± 0.10 | 0.179 |
week 9–10 | 4.72 ± 0.14 | 5.02 ± 0.14 | 0.140 |
week 10–11 | 4.98 ± 0.17 | 5.58 ± 0.17 | 0.015 |
weeks 5–11 | 3.61 ± 0.03 | 3.86 ± 0.03 | <0.001 |
Lean | Fat | p-Value | |
---|---|---|---|
N of rabbits | 60 | 60 | |
Slaughter weight, g | 2606 ± 39.2 | 2527 ± 37.0 | 0.144 |
Hot carcass, g | 1573 ± 23.1 | 1531 ± 21.9 | 0.200 |
Chilled carcass, g | 1534 ± 22.7 | 1495 ± 21.6 | 0.219 |
Reference carcass, g | 1291 ± 19.0 | 1262 ± 18.0 | 0.266 |
Dressing out percentage: | |||
Hot carcass | 60.4 ± 0.25 | 60.6 ± 0.24 | 0.489 |
Chilled carcass | 58.9 ± 0.25 | 59.1 ± 0.24 | 0.392 |
Reference carcass | 49.6 ± 0.26 | 49.9 ± 0.26 | 0.355 |
Percentage to the chilled carcass: | |||
Reference carcass | 84.2 ± 0.15 | 84.4 ± 0.14 | 0.435 |
Head | 8.79 ± 0.12 | 8.27 ± 0.11 | 0.002 |
Thoracic cage organs | 1.56 ± 0.04 | 1.65 ± 0.04 | 0.125 |
Liver | 4.42 ± 0.11 | 4.65 ± 0.11 | 0.151 |
Kidneys | 1.04 ± 0.2 | 1.08 ± 0.02 | 0.185 |
Percentage to the reference carcass: | |||
Fore part | 30.8 ± 0.18 | 30.1 ± 0.18 | 0.020 |
Mid part | 30.3 ± 0.18 | 30.5 ± 0.18 | 0.424 |
Hind part | 36.9 ± 0.20 | 36.2 ± 0.19 | 0.006 |
Perirenal fat | 1.39 ± 0.10 | 2.37 ± 0.10 | <0.001 |
Scapular fat | 0.49 ± 0.04 | 0.75 ± 0.04 | <0.001 |
Dissectible fat | 1.85 ± 0.13 | 3.10 ± 0.13 | <0.001 |
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Kasza, R.; Donkó, T.; Matics, Z.; Nagy, I.; Csóka, Á.; Kovács, G.; Gerencsér, Z.; Dalle Zotte, A.; Cullere, M.; Szendrő, Z. Rabbit Lines Divergently Selected for Total Body Fat Content: Correlated Responses on Growth Performance and Carcass Traits. Animals 2020, 10, 1815. https://doi.org/10.3390/ani10101815
Kasza R, Donkó T, Matics Z, Nagy I, Csóka Á, Kovács G, Gerencsér Z, Dalle Zotte A, Cullere M, Szendrő Z. Rabbit Lines Divergently Selected for Total Body Fat Content: Correlated Responses on Growth Performance and Carcass Traits. Animals. 2020; 10(10):1815. https://doi.org/10.3390/ani10101815
Chicago/Turabian StyleKasza, Rozália, Tamás Donkó, Zsolt Matics, István Nagy, Ádám Csóka, György Kovács, Zsolt Gerencsér, Antonella Dalle Zotte, Marco Cullere, and Zsolt Szendrő. 2020. "Rabbit Lines Divergently Selected for Total Body Fat Content: Correlated Responses on Growth Performance and Carcass Traits" Animals 10, no. 10: 1815. https://doi.org/10.3390/ani10101815