18-Title: Factors affecting lactation length in Gir crossbred cattle
Authors: Baliram S Katkade, Mahadeo P Sawane, Mahesh M Chopade and Sandeep J Komatwar
Source: Ruminant Science (2024)-13(1):113-116.

Abstract

How to cite this manuscript: Katkade Baliram S, Sawane Mahadeo P, Chopade Mahesh M and Komatwar Sandeep J (2024). Factors affecting lactation length in Gir crossbred cattle. Ruminant Science 13(1):113-117.
Abstract
The present study was conducted to evaluate the lactation length of Gir crossbred cattle, specifically the FG, IFG, FJG, IFJG, and R groups. The data were gathered from the archives of the Research-Cum Development Project on Cattle, located at Mahatma Phule Krishi Vidyapeeth Rahuri, in Ahmednagar District, Maharashtra, India. The data collection spanned from 1972 to 2018. A total of 2743 lactations were recorded and cows with aberrant or incomplete records and afflicted by diseases were excluded from the study. An analysis was conducted on the lactation duration of Gir crossbred cows during their first, second, and third lactations. The method of least squares was employed for statistical analysis of the data to reach the conclusions. The observed least-squares averages and standard error of lactation length in Gir crossbred cattle were estimated to be 347.39±2.59 days. The calving time, calving season, and genetic group had a significant impact (P<0.01) on lactation length in Gir crossbred cattle, although parity did not have a significant effect. References Ahmed MA, Teirab AB, Musa LMA and Kurt JP (2007). Milk production and reproduction traits of different grades of Zebu X Friesian crossbreds under semi-arid conditions. Arch Tierz Dummerstorf 50(3):240-249. Alex R, Kumar S, Singh U, Deb R, Alyethodi RR, Prakash B and Singh G (2017). Evaluation of non-genetic factors affecting lactation traits of Frieswal cows in northern zone of India. Indian Journal of Animal Sciences 87(4):520-522. Banda JW (1996). Evaluation of the productive and reproductive performance of Friesian x Zebu and Jersey x Zebu crossbred cattle at Bunda College Farm in Malawi. Malawi Journal of Science and Technology 3. Das A, Miah G, Gupta MD and Khan MKI (2013). Genetic parameters of Holstein crossbred on commercial dairy farms in Chittagaong, Bangladesh. Indian Journal of Animal Research 47(4):327-330. Gaikwad U, Dengre R, Deokar D and Bhoite U (2018). Studies on first lactation production traits of HF x Gir half-breds. Journal of Animal and Veterinary Sciences 5(2):12-15. Hadge MR, Kuralkar SV, Ali SZ, Kharkar KP and Sawaimul AD (2012). Genetic studies on productive traits of Sahiwal and Jersey x Sahiwal crossbred cows. Indian Journal of Animal Research 46(1):92-94. Harvey WR (1990). Accuracy of simplified regressed least squares VS BLUP method for ranking of sires. Indian Journal of Animal Genetics and Breeding I(1):7-19. Hingonekar GS, Deokar DK, Rokade SU and Sonawane HS (2021). Effect of non-genetic factors on production traits for HF×GIR half-breds. International Journal of Current Microbiology and Applied Sciences 10(01):178-185. Japheth PK, Mehla RK, Imtiwati J and Bhat SA (2015). Effect of non-genetic factors on various economic traits in Karan Fries crossbred cattle. Indian Journal of Dairy Science 68(2):21-24. Kumari Sangeeta, Nirala Ramesh Kumar, Chandran PC and Kumar Pramod (2023). Effects of genetic factors on milk production efficiency of cattle of Shahabad region of Bihar. Ruminant Science 12(2):343-346. Kramer CY (1957). Extension of multiple range test to group correlated adjusted mean. Biometrics 13:13-20. Rather Mubashir Ali, Hamdani Ambreen, Ayaz Aadil, Shanaz Syed, Mir Shabir Ahmad and Nabi Nusrat (2020). Morphological, phenotypic, performance traits of nondescript goats in Budgam district of Kashmir. Ruminant Science 9(1):137-140. Reddy B Nageswara, Rao MV Dharma, Rangamma B and Reddy P Pandu Ranga (2023). A study on association of external morphological characters with milk production traits in Ongole cattle. Ruminant Science 12(1):113-116. Shubha Lakshmi B, Gupta BR, Gnana Prakash M, Sudhakar K and Sharma S (2010). Genetic analysis of the production performance of Frieswal cattle. Tamilnadu Journal of Veterinary and Animal Sciences 6(5):215-222. Tiezzi F,  Maltecca C, Cecchinato A, Penasa M and Bittante G (2012). Genetic parameters for fertility of dairy heifers and cows at different parities and relationships with production traits in first lactation. Journal of Dairy Science  95:7355-7362. Togla Oshin, Bhardwaj Shivam, Yadav Nistha, Gujral Shilpa, Wani Yaser Mushtaq, Kumar Ishmeet and Mukherjee Anupama (2021). Effect of non-genetic factors on the production performance traits in Gir cattle. Ruminant Science 10(2):265-270. Uddin MK, Wadud A, Begum D, Siddiki MSR and Rashid MH (2008). Productive and reproductive performance of indigenous and crossbred cattle in Comilla District. Bangladesh. Journal of Animal Science 37(1):39-43. Usman T, Guo G, Suhail SM, Ahmed S, Qiaoxiang L, Qureshi MS and Wang Y (2012). Performance traits study of Holstein Friesian cattle under subtropical conditions. Journal of Animal and Plant Sciences 22(2):92-95. Weber C, Losand B,  Tuchschere A,  Rehbock F, Blum E,  Yang W,  Bruckmaier M, Sanftleben P and Hammon HM (2015). Effects of dry period length on milk production, body condition, metabolites, and hepatic glucose metabolism in dairy cows. Journal of Dairy Science 98:1772-1785.