Holştayn erkek danalarda mevsimin besi performansı, kesim ve karkas özellikleri ile besi maliyetine etkisi

Abstract

- 99 - In spite of the insignificant differences among the groups for slaughter and carcass characteristics, the averages of dressing percentage were 56.5, 57.0, 54.5 and 54.5 % and MLD area for per 100 Kg carcass weight were 21.3, 22.0, 21.6 and 29.9 Cm2 for summer, autumn, winter and spring groups respectively. The differences among the groups were significant (P<0.05). The average values of feed-dry-matter cost for per 1 Kg live-weight gain were 12.9, 13.4, 14.5 and 10.7 thousand TL. in the above order and the differences among the seasonal groups were highly significant (P<0.01). The highest level net profit was achieved in the spring group with 35.7 thousand TL. and the autumn and summer group followed it with 35.2 and 35.0 thousand TL, while the winter group had the lowest net profit value with 31.8 thousand TL in the groups. There were highly significant (P<0.01) differences among the values groups. According to the results, it was concluded that the spring group was the most efficient and economical one in terms of fattening performance and the spring group was followed by the summer, autumn and winter groups. It was probably due to fact that there was an inverse relationship between the fattening performance and the exposure to winter conditions at earlier ages.- 98 - initial live-weights of the groups were statisticaly significant (P<0.05) The average values of initial live-weight of groups were determined as 197.3, 288.5, 212.7 and 172.1 Kg with the same respect. The differences among the fattening periods of the groups were not significant. Hovever, fattening period was the least with 207.7 days for the spring group and the other values were 226.0, 225.7 and 228.6 days for summer, autumn and winter groups respectively. During the fattening period, daily average live-weight gain of groups were determined as 1.333, 1.067, 1.049 and 1.352 Kg for summer, autumn, winter and spring groups respectively The differences were found statisticaly highly significant (P<0.01). The differences among the daily average feed-dry-matter consumption of groups were insignificant, but the winter group had the highest level of daily average feed-dry-matter consumption with 8.007 Kg it was followed by summer, autumn and spring groups with 7.908, 7.867 and 7.868 Kg respectively. The highest level of feed efficiency values were observed at the spring group with 5.857 Kg. The summer (7.086 Kg) and autumn group (7.339 Kg) followed the spring group. The winter group had the lowest level of feed efficiency values. These values were highly significant (P<0.01) among the seasonal groups.- 99 - In spite of the insignificant differences among the groups for slaughter and carcass characteristics, the averages of dressing percentage were 56.5, 57.0, 54.5 and 54.5 % and MLD area for per 100 Kg carcass weight were 21.3, 22.0, 21.6 and 29.9 Cm2 for summer, autumn, winter and spring groups respectively. The differences among the groups were significant (P<0.05). The average values of feed-dry-matter cost for per 1 Kg live-weight gain were 12.9, 13.4, 14.5 and 10.7 thousand TL. in the above order and the differences among the seasonal groups were highly significant (P<0.01). The highest level net profit was achieved in the spring group with 35.7 thousand TL. and the autumn and summer group followed it with 35.2 and 35.0 thousand TL, while the winter group had the lowest net profit value with 31.8 thousand TL in the groups. There were highly significant (P<0.01) differences among the values groups. According to the results, it was concluded that the spring group was the most efficient and economical one in terms of fattening performance and the spring group was followed by the summer, autumn and winter groups. It was probably due to fact that there was an inverse relationship between the fattening performance and the exposure to winter conditions at earlier ages.- 98 - initial live-weights of the groups were statisticaly significant (P<0.05) The average values of initial live-weight of groups were determined as 197.3, 288.5, 212.7 and 172.1 Kg with the same respect. The differences among the fattening periods of the groups were not significant. Hovever, fattening period was the least with 207.7 days for the spring group and the other values were 226.0, 225.7 and 228.6 days for summer, autumn and winter groups respectively. During the fattening period, daily average live-weight gain of groups were determined as 1.333, 1.067, 1.049 and 1.352 Kg for summer, autumn, winter and spring groups respectively The differences were found statisticaly highly significant (P<0.01). The differences among the daily average feed-dry-matter consumption of groups were insignificant, but the winter group had the highest level of daily average feed-dry-matter consumption with 8.007 Kg it was followed by summer, autumn and spring groups with 7.908, 7.867 and 7.868 Kg respectively. The highest level of feed efficiency values were observed at the spring group with 5.857 Kg. The summer (7.086 Kg) and autumn group (7.339 Kg) followed the spring group. The winter group had the lowest level of feed efficiency values. These values were highly significant (P<0.01) among the seasonal groups.

- 99 - In spite of the insignificant differences among the groups for slaughter and carcass characteristics, the averages of dressing percentage were 56.5, 57.0, 54.5 and 54.5 % and MLD area for per 100 Kg carcass weight were 21.3, 22.0, 21.6 and 29.9 Cm2 for summer, autumn, winter and spring groups respectively. The differences among the groups were significant (P<0.05). The average values of feed-dry-matter cost for per 1 Kg live-weight gain were 12.9, 13.4, 14.5 and 10.7 thousand TL. in the above order and the differences among the seasonal groups were highly significant (P<0.01). The highest level net profit was achieved in the spring group with 35.7 thousand TL. and the autumn and summer group followed it with 35.2 and 35.0 thousand TL, while the winter group had the lowest net profit value with 31.8 thousand TL in the groups. There were highly significant (P<0.01) differences among the values groups. According to the results, it was concluded that the spring group was the most efficient and economical one in terms of fattening performance and the spring group was followed by the summer, autumn and winter groups. It was probably due to fact that there was an inverse relationship between the fattening performance and the exposure to winter conditions at earlier ages.- 98 - initial live-weights of the groups were statisticaly significant (P<0.05) The average values of initial live-weight of groups were determined as 197.3, 288.5, 212.7 and 172.1 Kg with the same respect. The differences among the fattening periods of the groups were not significant. Hovever, fattening period was the least with 207.7 days for the spring group and the other values were 226.0, 225.7 and 228.6 days for summer, autumn and winter groups respectively. During the fattening period, daily average live-weight gain of groups were determined as 1.333, 1.067, 1.049 and 1.352 Kg for summer, autumn, winter and spring groups respectively The differences were found statisticaly highly significant (P<0.01). The differences among the daily average feed-dry-matter consumption of groups were insignificant, but the winter group had the highest level of daily average feed-dry-matter consumption with 8.007 Kg it was followed by summer, autumn and spring groups with 7.908, 7.867 and 7.868 Kg respectively. The highest level of feed efficiency values were observed at the spring group with 5.857 Kg. The summer (7.086 Kg) and autumn group (7.339 Kg) followed the spring group. The winter group had the lowest level of feed efficiency values. These values were highly significant (P<0.01) among the seasonal groups.- 99 - In spite of the insignificant differences among the groups for slaughter and carcass characteristics, the averages of dressing percentage were 56.5, 57.0, 54.5 and 54.5 % and MLD area for per 100 Kg carcass weight were 21.3, 22.0, 21.6 and 29.9 Cm2 for summer, autumn, winter and spring groups respectively. The differences among the groups were significant (P<0.05). The average values of feed-dry-matter cost for per 1 Kg live-weight gain were 12.9, 13.4, 14.5 and 10.7 thousand TL. in the above order and the differences among the seasonal groups were highly significant (P<0.01). The highest level net profit was achieved in the spring group with 35.7 thousand TL. and the autumn and summer group followed it with 35.2 and 35.0 thousand TL, while the winter group had the lowest net profit value with 31.8 thousand TL in the groups. There were highly significant (P<0.01) differences among the values groups. According to the results, it was concluded that the spring group was the most efficient and economical one in terms of fattening performance and the spring group was followed by the summer, autumn and winter groups. It was probably due to fact that there was an inverse relationship between the fattening performance and the exposure to winter conditions at earlier ages.