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  DOI Prefix   10.20431


 

International Journal of Research Studies in Biosciences
Volume 5, Issue 9, 2017, Page No: 4-10

Disposal Pattern of Cattle Calves Born through Embryo Transfer Technology

Vaishali Sah1,R.K.Tonk2,Ravinder Kumar3,B.R. Yadav1*

Livestock Genome Analysis Laboratory, Dairy Cattle Breeding Division, National Dairy Research Institute,Karnal, Haryana, Karnal - 132001, Haryana, India

Citation :Vaishali Sah,R.K.Tonk,Ravinder Kumar,B.R.Yadav, Disposal Pattern of Cattle Calves Born through Embryo Transfer Technology International Journal of Research Studies in Biosciences 2017,5(9) : 4-10

Abstract

The study was carried out on the fate of 69 calves (37 males and 32 females) of cattle born through embryo transfer technology (ETT) during 2002-2005. Among these two sets were of twins, both Sahiwal. The calves were of both sexes from two prime milch breeds: Sahiwal (Sw: 21) and Karan Fries (KF: 48) maintained in an organized herd. The data was analyzed from birth to their stay in herd, as a few (4) animals up to the age of 10 years (2015). The disposal of both males and females of different age groups namely up to 1 month, 1-12 months, 1-3 years, 3-5 years 5-7 years and 7-10 years was 17.39, 13.04, 8.70, 33.33, 21.74 and 5.80 percent, respectively. The disposal at young age from birth to three years was mostly due to death 24 (34.78%) and other 3 (4.35%).were auctioned as poor health and a freemartin. Survival beyond three years of age among females was 16 (50%), these conceived and gave birth to progeny. However, these were later on disposed due to death (3) and auction (13). In the males 26(70.27%) survived beyond three years and entered 'age of first ejaculation (AFE)' but were disposed at various stages of training and use due to poor libido or poor semen quality or freezability. Out of total males only 2 remained in the herd and produced progeny, with suspected chromosomal defect and hence were maintained as experimental. The disposal from birth up to 5 years of age was found to be 65.63% females and 78.38% males; subsequently it was overall up to 7 years 87.5% females and 100% males. Only 4 cows stayed beyond seven years, calved 4-7 times, however, got endometritis infection and were disposed. This study showed that the ET born calves died or disposed due to involuntary culling without contribution to herd and hence the technique requires high attention before adoption in India.


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