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Animal Breeding and Genetics
Asian-Australasian Journal of Animal Sciences 1994;7(3): 383-387.
DOI: https://doi.org/10.5713/ajas.1994.383    Published online September 1, 1994.
Production performance and milk producing efficiency in different filial groups of H. Friesian x Sahiwal halfbrees
M. Z. Chaudhry, M. J. Tahir, M. Rafique
Abstract
Six heifers each of F1, F2, F3, F4 H. Friesian 횞 Sahiwal halfbreds and pure Sahiwal with overall average initial age and live weight of 315.6 134.8 days and 143.8 48.5 kg, respectively were used for this study. The under trial animals were fed according to N.R.C. (1978). The overall average age at maturity, first conception and first calving was 563.8 116.8, 675.8 135.6 and 956.8 149.8 days with live weights as 302.2 58.6, 342.6 41.5 and 433.9 38.1 kg, respectively. The overall 305 days and total milk yield for 1st lactation length was 2,729.0 669.3 and 2,992.7 377.5 litre while the FCM (at 4%) ws 2,934.2 410.8 litre. The lactation length was 336.6 69.6 days. The fat and solids not fat contents were 4.5 0.2 and 8.2 0.3 per cent, respectively. The milk production in Sahiwal cows was significantly lower than crossbred cows. The services per conception were 2.5 1.3. The overall per head per day consumption of DM, TCP and ME was 10.9 1.2 kg, 1,399 199 gm and 22.6 2.4 M.Cal., respectively. The overall milk producing efficiency for the production of one litre of FCM was 1.12 0.15 kg of DM, 142.2 17.76 gm of TCP and 2.31 0.27 M.Cal. of energy while the feeding cost was Rs. 1.46 0.22 per litre of FCM produced. The feeding cost per litre FCM was significantly higher in Sahiwal and F2 than in other genetic groups.
Keywords: Crossbred Dairy Cattle; Different Filial Groups; Production and Reproduction Performance


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