TNB, NBA, NSB, and LWB of Jiaxing Black sows in different parities are listed in Table 3.
Analysis results identified that sows of the total parities with genotype BB had 1.23 TNB (p< 0.01) and 1.28 NBA (p<0.01) more than those with genotype AB, respectively.
Node 13 is a group of cows with lactation records on 1st and 2nd
parities and 2000- 2001 calving years (1999 to 2001] Node 14 is a group of cows with lactation records on
parities greater than 2 and 2000- 2001 calving years (1999 to 2001]
The first hypothesis is that at earlier parities, the proportion of daughters will be positively associated with the probability of parity progression.
Four multivariate binary logistic regressions were estimated, one each for parities 1-4, to determine a woman's odds of progressing to the next parity according to current sex composition.
In all projections, rates for women with
parities two and over are assumed to remain constant, in line with Australian experience over the period 1991 to 2000.
For higher
parities, the adjusted proportions are as follows:
The glucose concentration was higher (linear, p = 0.07) and tended to be the lowest in 3,300 kcal/kg ME (quadratic, p = 0.06) treatment at 24 h postpartum in
parities 1, and 3 (Figure 2).
In India and Nepal, there was a clear shift toward permanent methods at
parities 2 and 3 as the number of sons increased.
Days to weaning for second and later
parities were calculated similarly to DTW1, and then the values were added to obtain the sum of days to weaning from the second to the last parity (DTW2).
The means of milk BHBA increased along with SDs through
parities (Table 1).
Also, gestation body weight and backfat thickness during different
parities can be used as an indicator for health status and productivity levels of sows (Barnett et al., 2001).
