Analysis of the lifetime and culling reasons for AI boars

Table 3 Selected parameters of boar performance by culling reasons (mean ± SD)

Item	LSV	LL	LP	ID	OA	RD	OT
Proportionate rate, %	23.7^Aa	9.3^B	14.9^b	9.6^B	9.3^B	22.5^Aa	10.7^B
Age of semen collection entry, d	259 ±37	267 ±31^b	261 ±32	251 ±29^a	258 ±48	261 ±27	259 ±31
Boar herd life, d	738 ±463^B	399 ±321^A	695 ±381^AB	759 ±415^B	1605 ±433^D	1105 ±309^C	460 ±276^AB
Daily gain, g	786.13 ±86.89^a	788.55 ±129.72^a	783.91 ±107.62^a	797.29 ±83.4^a	729.15 ±94.03^b	761.3 ±73.41	782.47 ±93.02^a
Lean meat content, %	61.62 ±1.82^a	61.29 ±2.32	61.27 ±1.44	61.65 ±1.77^a	60.43 ±2.2^b	61.25 ±1.95	61.54 ±2.18^a
Ejaculates incompatible with requirements, n	3.42 ±5.72	1.85 ±2.76^A	3.92 ±5.58	5.79 ±8.64^B	3.73 ±5.68	2.54 ±4.66^A	2.97 ±3.74^A

LSV low semen value, LL low or lack of libido, LP leg problems, ID infectious diseases, OA old age, RD reduced demand for semen of the given boar, OT others
^a,b – in the same row signifies statistically significant differences between reasons of culling, with P ≤ 0.05
^A,B,C,D – in the same row signifies statistically significant differences between reasons of culling, with P ≤ 0.01

ISSN: 2049-1891