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Journal of Animal and Poultry Production
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Abou-Ela,, M., Hassan, L., EI-Wardani, M. (2005). EFFECT OF RECOMBINANT BOVINE SOMATOTROPIN ON MILK PRODUCTION AND COMPOSITION OF LACTATING BUFFALOES. Journal of Animal and Poultry Production, 30(4), 1909-1916. doi: 10.21608/jappmu.2005.237966
M. B. Abou-Ela,; Laila R. Hassan; M. A. EI-Wardani. "EFFECT OF RECOMBINANT BOVINE SOMATOTROPIN ON MILK PRODUCTION AND COMPOSITION OF LACTATING BUFFALOES". Journal of Animal and Poultry Production, 30, 4, 2005, 1909-1916. doi: 10.21608/jappmu.2005.237966
Abou-Ela,, M., Hassan, L., EI-Wardani, M. (2005). 'EFFECT OF RECOMBINANT BOVINE SOMATOTROPIN ON MILK PRODUCTION AND COMPOSITION OF LACTATING BUFFALOES', Journal of Animal and Poultry Production, 30(4), pp. 1909-1916. doi: 10.21608/jappmu.2005.237966
Abou-Ela,, M., Hassan, L., EI-Wardani, M. EFFECT OF RECOMBINANT BOVINE SOMATOTROPIN ON MILK PRODUCTION AND COMPOSITION OF LACTATING BUFFALOES. Journal of Animal and Poultry Production, 2005; 30(4): 1909-1916. doi: 10.21608/jappmu.2005.237966

EFFECT OF RECOMBINANT BOVINE SOMATOTROPIN ON MILK PRODUCTION AND COMPOSITION OF LACTATING BUFFALOES

Article 1, Volume 30, Issue 4, April 2005, Page 1909-1916  XML PDF (455.5 K)
Document Type: Original Article
DOI: 10.21608/jappmu.2005.237966
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Authors
M. B. Abou-Ela,1; Laila R. Hassan2; M. A. EI-Wardani2
1Animal Production Department, Faculty of Agriculture, Mansoura University, Mansoura, Egypt.
2Animal Production Research Institute, Agricultural Research Center, Dokki, Giza. Egypt.
Abstract
Effects of recombinant bovine somatotropin {rbST) treatment on buffalo milk
production and composition were studied under the Egyptian dairy farm conditions,
Thirty—six buffaloes delivered during the same season were assigned to either control
(n=16) or rbST treated groups (n=20). The treated animals were subcutaneously
injected biweekly by 500 mg of rbST over a period of five months of lactation! starting
at 50 days postpartum. The results showed that rbST treated buffaloes produced
significantly (P<0.01) higher average daily milk yield than controls. Average daily milk
yield of the experimental period were 8.57:0.39kg and 10.561035 kg for control and
treated buffatoes. respectively. Treatment with rbST did not affect buffaloes milk
composition (fat. lactose, total solids and solids non fat contents). while it significantly
affected(P<0.01) the milk protein %. A slight significant (P<0.05) effect on fat
percentage was found during different phases of lactation between treated and control
animals (at 5‘“ month of Iactation).Percent of milk protein was significantly(P<0.01)
affected by the interaction between treatment and month of lactation. Treatment with
rbST had a significant (P<0.01) effects on percentage of fatty acids in milk fat which
characterized by clearly higher percent of Myristic acid (014.00). Oleic acid ((313110)
and Stearic acid (C1330). The percentages of short chain (< 012100) and medium
chain acids (Cmflo-Cmoo) in milk fat were lower in treated buffaloes compared to
controls. it was concluded from this study that treatment of dairy buffaloes with rbST
could significantly increase their milk yield without significant changes in milk
composition except for higher content of long chain fatty acids
Keywords
Buffalo. bovine somatotropin; milk composition and fatty acrds
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