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Found that the problem today is important. Integrity issues and problems on the productivity of milk production has decreased in each model. It was recommended to focus on managed farms with breeding. Including selective breeding to produce cattle replacement and breeding system. By considering the first milk yield. In order to improve dairy farming in Thailand (Plymouth, medications and faculty, the DEA) Philipsson (1981) reported that the appearance of yielding milk is characterized by a first priority of dairy farming is a minor nature. Fertility By selectively providing quality dairy cattle as a breeder and used for breeding. The recorded information. The animals were evaluated on various factors. For Qualifying The value used for evaluating various characteristics including statistical information. Genetic parameters such as heritability value. (Heritability, h2) and breeding values (estimated breeding value, EBV), which is the influence of additive genetic (additive gene) can be estimated in terms of the figures for the comparison between the animals. (Vijaya et al, 2548)
mixing dairy each time to get semen from cooperatives that have joined. This semen mixed in each child. Semen from the same sire as a mixed model mother. As a result, the dairy herd was mixing with blood up. Huge effect on the productivity of dairy cows. A sample study of Wiggans and Vanraden. (1995) found that cows bred Holstein Stein has caused increased blood against 0.026 percent per year. (Period 1960-1999) and have steadily increased. This is consistent with studies of Miglior et al. (2000) the rate of blood against 0.17 percent per year increase to 0.26 percent (Miglior et al., 1995, 2008; Casanova et al., 1992; Short et al., 1992. ; Wiggans and Vanraden, 1995; Krogmeier et al., 1997; Smith et al., 1998; Goddard and Wiggans, 1999; Thompson et al., 2000; Cassell et al., 2003; Croquet et al., 2006; and Bezdicek. et al., 2008) reported that the impact of mixed-blood ties that increase the dairy herd resulted in the production of milk fell by 10-60 kilograms per one during lactation (approximately 305), the fat content in milk decreased. 0.5 to 1.2 kg and protein content of milk decreased from 0.5 to 1.2 kg in each strain were different
issues, the yield of milk. Most farmers have not recorded pedigree dairy cattle and milk on board each day individually. Causing hindrance to the development and breeding of dairy cows. To raise awareness of the farmers about cattle breeding and milk recorded as the first priority of dairy farming in order to be able to develop dairy farming. Breeding cattle and prevent damage from the effects of mixing with blood to affect the dairy. The aim of this study. To study the effects of mixing with blood that affect the dairy herd milk yield. To guide the breeding of dairy cows and increased milk production.
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