Effect of temperature humidity index on milk production performance of Sahiwal cows
384 / 211
Authors
-
Kaiser Parveen
CGKV, DURG
-
AK Gupta
NDRI, KARNAL
-
RS Gandhi
ICAR, NEW DELHI
-
Ossama Kalim
CGKV, DURG
-
Shabahat Mumtaz
NDRI, KARNAL
Keywords:
Heat stress, milk production, THIAbstract
The objective of the present study was to analyze the effect of temperature humidity index (THI) on daily wet average of Sahiwal cows maintained under LRC (Livestock Research Center), National Dairy Research Center, Karnal. For this study daily milk record of about 700 lactating Sahiwal cows during the sixteen years 2000-2016 were considered. The daily ambient temperature and relative humidity records were collected from NICRA center (Climate Resilient Livestock Research Center), NDRI, Karnal. The daily wet average records were associated with daily average THI which was divided into 7 classes (≥45 to ≤50, ≥51 to ≤56, ≥57 to ≤62, ≥63 to ≤68, ≥69 to ≤73, ≥74 to ≤79 and ≥80 to ≤85. The effect of month was found to be highly significant on the THI. The highest monthly average THI values were observed for the month of July. The effect of THI was highly significant on daily wet average (p≤0.01) and decreased in tendency from THI ≥68. Regression analysis revealed that the THI and daily wet average have negative association. Daily wet average of the herd gets reduced by 0.175 kg per unit increase in the THI. In conclusion negative effect of heat stress conditions on milk production was found.
References
Bernabucci U, Lacetera N L, Banmgard H, Rhoads R P, Ronchi B and Nardone A. 2010. Metabolic and hormonal acclimation to heat stress in domesticated ruminants. Animal. (4). 1167-1183.
------------------------------
Bohmanova J, Misztal I and Cole J B. 2007. Temperature humidity indexes as indicator of milk production losses due to heat stress. Journal of Dairy Science.(90) : 1947-1956.
----------------------------------
Bouraoni R, Lahmar M, Majdonb A, Djemali M and Belyear R. 2002. The relationship of temperature humidity index with milk production of dairy cows in a Mediterranean climate. Animal Research. 51 : 479-491.
-------------------------------------
Brugemann K, Gernand E, Borstel U K V and Konig S. 2012. Defining and evaluating heat stress thresholds in different dairy cows production systems. Archiv Tierzucht (55) 1 : 13-24.
-------------------------------------
Das S K 2012. Effect of THI on milk production and physiological responses of crossbred cows during different months under agro climatic condition of Bihar. Indian Journal of Dairy Science. (65) 3 : 246-249.
----------------------------------------
Hubbard K G, Stooksbury D E, Hahn G, Hahn L and Mader T L.1999. A climatolologic perspective on feedlot cattle performance and mortality related to temperature humidity index. Journal of Production Agriculture. 12: 650-653.
--------------------------------------------
Lambertz C, Sanker C and Gauly M. 2014. Climatic effects on milk production traits and somatic cell score in lactating Holstein-Friesian cows in different housing systems. Journal of Dairy Science. (97): 319-329.
-----------------------------------------
Ravagnolo O, Miztal I and Hoogenboom G. 2000. Genetic component of heat stress in dairy cattle development of heat index function. Journal of Dairy Science. (83) : 2120-2125.
--------------------------------------------------
SAS Institute 1996. Statistics, Version 9.2. SAS Institute. Inc. Cary.NC, USA.
---------------------------------------------------
Upadhyay R C and Singh S V. 2009. Thermal stress on physiological functions, thermal balance and milk production in Karan Fries and Sahiwal cows. Indian Veterinary Journal (86) 2 : 141-144.
----------------------------------------------------
Zadeh G H N, Mohit A and Azad N. 2013. Effect of temeperaure humidity index on productive and reproductive performances of Iranian Holstein cows. Iranian Journal of Veterinary Research. 14 (2) : 106-112.
------------------------------------------------------
