Comparison of Productive & Reproductive performance of Dairy cow
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1) The document compares the productive and reproductive performance of dairy cows in the char and plain land areas of Ulipur upazila, Bangladesh. It finds that crossbred cows (HF and Sahiwal) had higher average daily milk yields compared to indigenous Deshi cows over 4 lactations. Crossbred cows also had longer average lactation lengths. 2) Reproductive performance was also better in crossbred cows. They reached first heat and calving earlier, had fewer services per conception, higher conception rates, and shorter calving intervals than indigenous Deshi cows. Gestation lengths were similar between crossbred and indigenous cows. 3) In both productive and reproductive performance, crossbred cows generally outperformed indigenous
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Comparison of Productive & Reproductive performance of Dairy cow
- 1. 1) Productive performance of Dairy cows available in char andplain land areas of Ulipur upazila in Bangladesh Comparisonof Productive performance ofDairy cows available in Char & Plain landareas of Ulipur upazila( sample size 16 cows among them8 are Deshi & 8 are cross bred cow for each lactation Total no. of cows are 64 among them 32 are Indigenousand 32 are Cross bred like HF and Sahiwal) Sl # Parameters Areas Plain & char land (Deshi cow) Ave. Production (Lts) of Indigenous cow (Plain &Char area) Plain & char land (Cross bred cow) Average Production (Lts) of cross bred cowLxSH LxHF 1st 2nd 3rd 4th 1st 2nd 1st 2nd 01 1st Lactation - Milk yield per day (Lts) Plain 1.6 1.1 1.3 1.5 1.37 5 4.3 5.2 6 5.125 Char 2.1 2.2 2.5 2.7 2.375 4.8 4.5 6.7 8 6 02 2nd Lactation - Milk yield per day (Lts) Plain 2.2 2 2.5 2.6 2.325 5.5 5.2 7.5 8.6 6.7 Char 2.3 3.2 2.6 3 2.775 6.3 6.1 8 9 7.35 03 3rd lactation- Milk yield per day (Lts) Plain 2.5 2.3 2.7 2.4 2.475 6.7 6.9 8.2 8.7 7.625 Char 2.7 3.1 3 2.9 2.925 7.5 8.0 8.5 9 8.25 04 4th lactation- Milk yield per day (Lts) Plain 1.25 1.0 1.2 1.3 1.187 5 4.1 4.5 5 4.65 Char 1.5 1.4 1.25 1.4 1.387 5.4 4.1 5.25 6 5.18 05 Lactation length (Period) Plain 175 190 195 180 185 days 245 days 265 270 250 257.5 days Char 192 200 210 195 199.25 days 270 280 282 272 276 days
- 2. 2) Reproductive performance of Dairy cows available in char and plainland areas of Ulipur upazila in Bangladesh Comparisonof Reproductive performance ofDairy cows available in Char & Plain landareas of Ulipurupazila(sample size 8 cows among them 4 are Deshi & 4 are cross bred cow for each parameters. Total no. of cows are 64 among them32are Indigenousand 32 are Cross bred like HF and Sahiwal) Sl# Parameters Areas Plain & char land (Deshi cow) Average (Month/days) Plain & char land (Cross bred cow) Average daysLxSH LxHF 1st 2nd 3rd 4th 1st 2nd 1st 2nd 01. Age at first heat Plain 33 m 32 m 34 m 36 m 33.75 m 26 m 28 m 24 m 23m 25.25 m Char 31 m 30 m 29 m 32 m 30.75 m 21 m 22 m 21 m 20 m 20.5 m 02. Service per conception Plain 1.87 times 1.925 times 2.13 times 2.31 time s 2.058 times 1.92 times 1.65 times 1.87 times 1.62 times 1.765 times Char 1.911 times 1.52 times 2.05 times 1.99 time s 1.86 times 1.90 times 1.78 times 1.65 times 1.87 times 1.8 times 03 Conception rate plain 71.7 82.8 73.05 81.8 77.33 66.67 70.50 81 77.07 73.81 Char 73 83.6 74.5 82.2 78.32 67.50 71.25 81.52 78.08 74.58 04. Age at first calving Plain 45 m 42 m 44 m 45 m 44 m 36 m 34 m 37.5 m 37 m 36.12 m Char 43 m 42 m 39 m 41 m 41.25m 33 m 31 m 34 m 32 m 32.25 m 05. Gestation length Plain 282 days 284 days 286 days 279 days 282.75 days 287 days 279 days 284 days 290 days 285 days Char 285 days 290 days 283 days 288 days 286.5 days 290 days 286 days 283 days 287 days 286.5 days 06. Post-partum heat period Plain 6.5 m 5.4 m 4.5 m 6 m 5.6 m 6 m 4.5 m 5 m 5.8 m 5.32 m Char 4.2 m 5.5 m 4.7 m 5 m 4.85 m 4.7 m 4.3 m 5 m 5.3 m 4.82 m 07. Calving Plain 18.5 m 22 m 17.5 m 19 m 19.25 m 20 m 19 m 17 m 16.8 m 13.45 m
- 3. interval Char 17 m 15.7 m 15.5 m 16 m 16.05 m 19 m 18 m 17 m 14 m 17 m