Effect of Season and Lactation Number on Milk Production of Holstein Friesian Cows in Kabul Bini-Hesar Dairy Farm

Abstract

The present study was designed to investigate the effects of season and lactation number on milk yields in Holstein dairy cows at Kabul Bini Hesar Dairy Farm. For this purpose, data were collected from the dairy farm herd book records during 1392-1393 (2013-2014). Considering the milk yield stages of the cows, the total milk production was highest during the spring season 18,454.95 ± 33 L followed by summer 17,060.85 ± 34.5 L while the lowest milk production obtained in winter 16,398.45 ± 31.5 L. Moreover, the average daily milk production of the cows was significantly different (p < 0.05) between the 1st, 2nd and 3rd lactations and the amounts were 12.04 ± 0.7, 13.24 ± 0.8 and 14.10 ± 0.6 L/day respectively. Milk yields of individual cows were gradually increased from 1st to 3rd lactation. The highest milk yield was recorded in 3rd lactation and the lowest was in 1st. From this study it was found that season and lactation number had a significant effect on the milk quantity.

Evaluation of trait preferences and effect of parity, season and lactation stage on production performance of indigenous dairy cow in kaffa zone, southwest Ethiopia

“…The current study result was higher and contradictory to 223.68 ± 3.55 L and 229.32 ± 1.58 L in the wet and dry seasons of the year without a significance difference [ 56 ]. Habibi et al [ 57 ] reported a higher LMY of a Holstein Friesian cow of 17,060.85 ± 34.5 L in summer and 16,398.45 ± 31.5 L in winter as a friendly concept. Contrary to the current result, Darfour-Oduro et al [ 58 ] reported non-significant effects of season on LL for Sanga-Holstein Friesian crosses in Ghana with dissimilar results.…”

“…Demeke [ 38 ] reported the effects of lactation on DMY antagonistically. He testified that lactation phase increased, yield would decrease by 1.75 ± 0.12 L, 1.23 ± 0.10 L, and 0.98 ± 0.09 L. The direct proportionality of DMY and lactation stage was determined (12.04 ± 0.7, 13.24 ± 0.8, 14.10 ± 0.6 L) by Habibi et al [ 57 ]. The effects of lactation stage on yield were due to compensatory restoration of exhausted energy during gestation and parturition at the early stage and period of the preparation for the conceived fetus at late stage.…”

The estimation and interpretation of ordered logit models for assessing the factors connected with the productivity of Holstein–Friesian dairy cows in Egypt

“…In other words, cows having longer DO yielded milk more than those with shorter and moderate calving-conception intervals. The ORs for all categories of DO were less than one; hence, these values were inverted to denote more interpretable conclusions (El-Awady et al 2021 ; Habibi et al 2021 ). This means, compared to DO < 100 days, the probability that a cow will yield milk of more than 4500 kg will be 2.31 (1/0.432) times greater for those of DO > 400 days.…”