Milk Production Characterization Of Sohagi Sheep | ||
| Assiut Journal of Agricultural Sciences | ||
| Article 2, Volume 40, Issue 2, December 2009, Pages 13-26 PDF (327.44 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ajas.2009.268796 | ||
| Author | ||
| Hatem Abdel Kader Mohamed Hamdon | ||
| Department of Animal and Poultry Production, Faculty of Agriculture, Sohag University, Sohag 82786, Egypt | ||
| Abstract | ||
| This study was carried out at the Animal Production Experimental Farm, Faculty of Agriculture, Sohag University. Milk yield and composition were determined in total of 118 Sohagi ewes. Lactation length, daily milk yield, total milk pre-weaning, total milk post-weaning and total milk yield were determined the results were 105.66±11.51days, 393±0.08ML, 28.08±5.49L, 13.92±5.35L, 41.99±9.80L, respectively Lactation curve peaked around the second week of lactation and decreased thereafter. Season of lambing had a highly significant effect (P< 0.01) on both milk yield , composition and lactation length. Ewes lambed at the spring season (February – 56.01±1.94 L) had greater milk yield compared to ewes lambed at the summer season (June –38.68±1.52 L) and autumn season (October – 36.68±2.80 L). Also, ewes lambed at spring season had a longer lactation length (118.35±2.29 day) than those lambed at summer (102.65±1.78 day). The differences due to number of suckling lambs were highly significant (P< 0.01) with total milk yield, milk yield pre-weaning, milk yield post- weaning and daily milk yield and significant (P< 0.05) with lactation length. Ewes reared single-born lambs produced 25.82±0.64L of milk, while those reared twins-born lambs produced 31.89±1.42L during the eight weeks of suckling. Ewe age had significant effects and milk post-weaning, daily milk yield and composition. A highly significant (p < 0.01) positive correlations was found between lambs birth weight and each of average daily milk yield or total milk pre-weaning. Also, a positive significant (p < 0.05& 0.01) correlations coefficients between weight ewes at lambing and each of average daily milk yield, total milk pre-weaning, total milk post-weaning, total milk yield or lactation length. Milk fat, protein, lactose, total solid, solid not fat, somatic cell count and milk energy were 4.93±1.18%, 4.34±0.67%, 4.53±0.42%, 14.51±1.57%, 9.54±0.93%, 269.085cells/ml and 3.54±1.12 MJ/L, respectively. There were a negative and | ||
| Keywords | ||
| Sohagi sheep; milk yield; milk composition; somatic cell count | ||
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