GENETIC ASSESSMENT AND TRENDS FOR MILK PRODUCTION TRAITS IN A HERD OF EGYPTIAN BUFFALOES (Bubalus bubalis)

Faid-allah, Eslam; Ghoneim, Elham; Ashour, Ayman; Ahamed, Ekram Ehab

doi:10.21608/ejap.2024.253974.1067

	GENETIC ASSESSMENT AND TRENDS FOR MILK PRODUCTION TRAITS IN A HERD OF EGYPTIAN BUFFALOES (Bubalus bubalis)
Egyptian Journal of Animal Production
Article 3, Volume 61, Issue 1, January 2024, Page 21-29 PDF (630.87 K)
Document Type: Original Article
DOI: 10.21608/ejap.2024.253974.1067
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Authors
Eslam Faid-allah ¹; Elham Ghoneim ¹; Ayman Ashour ²; Ekram Ehab Ahamed ¹
¹Animal Production Department, Faculty of Agriculture, Menoufia University, Menoufia, Egypt
²Animal Production Research Institute, Agricultural Research Centre, Ministry of Agriculture, Nadi Seed Street, 12618, Dokkii, Giza, Egypt.
Abstract
This study investigates genetic, non-genetic factors, estimate genetic parameters and genetic trends for milk production and milk constituent’s traits of Egyptian-buffaloes. The data obtained from an experimental farm in the Nile-Delta, Kafr-ElShikh governorate, owned by APRI (Animal Production Research Institute), Egypt. Data consists of 3417 records of Egyptian-buffaloes, 72 sires and 1129 dams. The means ±Std for Total milk yield [TMY], and Somatic Cell Count [SCC] were 1905.52±416.17 kg, 191.85±74.88 *10-3 cells/ml., respectively. The means for milk constituents include yields of Fat [FY], Protein [PY], Lactose [LY], Total Solids [TSY], Solid Non-Fat [SNFY] were 64.93±19.42, 53.40±6.40, 48.58±4.64, 157.24±12.52, and 95.75±11.32 g/kg milk, respectively. Sire, dam within sire, and non-genetic factors had significant effects for studied traits. Heritability estimates were 0.25, 0.41, 0.22, 0.30, 0.20, 0.25, and0.10 for TMY, FY, PY, LY, TSY, SNFY, and SCC, respectively. The means of EBVs for TMY, FY, PY, LY, and TSY were -10.23±24.06, -0.039±1.28, -0.058±0.24, 0.181±0.44, and0.122±0.98, respectively. The genetic trends for TMY, FY, PY, TSY, and SNFY were 8.154 kg/year (R²=0.6893), 1.070 kg/year (R²=0.8386) and0.058/year (R²=0.9351), 0.177/year (R²=0.8475), 1.899/year (R²=0.9109), and -2.063/year (R²=0.7799), respectively. Moderate heritability and positive genetic and phenotypic correlation coefficients for studied traits indicated the possibility of improving them using selection indices.
Keywords
Egyptian buffaloes; Milk Production; Heritability; Breeding value; somatic cell count


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