Effects of Climate Change on Milk Yield and Milk Composition in Thai Crossbred Holstein Cows

Abstract

The purpose of this research was to study effects of climate changes on milk yield and milk composition of Holstein crossbred . This study uses data recording total milk production per farm each day and milk composition (from 2013-2017): fat percentage (% Fat), protein percentage (% Pro), solid not fat percentage (% SNF) and total solid percentage (% TS) from 79 farmers in Mahasarakham Province, Thailand. The temperature and humidity data were obtained from records of meteorological center. Using temperature and relative humidity for calculate temperature humidity index (THI). The effects of THI on milk yield and milk composition were assessed by procedure REG using SAS. The study indicated that, the weather was hot and humid. The temperature ranged from 20.88 -33.01 ° C. and average humidity was 72.59%. The highest THI (82.07) was in May. The relationship between THI and milk yield was negatively related. The slope value was -0.099, it meaning that when the THI value increased by 1 unit the milk yield decreased by 0.099 kg / cow / day. The THI group for effect of THI on milk yield and milk composition was set 4 groups (THI 1 = THI ≤70, THI 2 = 74 ≤THI <70, THI 3 = 78 ≤THI <74, THI 4 = THI> 78). The highest THI effect on low milk yield. In contrast, low THI (THI 1 and THI 2) effect on high milk yields. The climate change, temperature and humidity increase effects on milk production of dairy cows to decrease.

Impact of Climate Change on Milk Production and Perceptions of Farmers in the West Bengal

“…The effect of climate variables on the cattle milk production was represented by Table 1. The regression analysis indicated that minimum temperature had shown a positively significant relationship with indigenous cow milk production at 10% level of significance, whereas; maximum temperature and relative humidity had expressed a positively non-significant relationship [11]. The 1 0 C increase in annual minimum temperature increased the indigenous cow milk production by 3.3% for the present study.…”

Changes in Bovine Colostrum Metabolites during Early Postpartum Period Revealed by 1H-NMR Metabolomics Approach

“…Future research focusing on the effect of these parameters on colostrum metabolome, especially in tropical dairy farming environments, could be of great interest. Although variations in milk composition associated with the origin of the farm (many factors involved) and sampling period (milking time, seasons, and climate) have been well acknowledged (Promket et al, 2020;Puppel et al, 2019), available data of these effects on the overall metabolite profile or molecular fingerprint of colostrum is rather limited. This information could help to suggest directions for improving dairy management to achieve the desired colostrum quality.…”