AEffect of calving month and season on productive traits of Holstein dairy cows. In Kabul Bini Hisar Dairy farm. Productive data on 305 days lactation period for 49 Holstein dairy cows, which were collected during one month from dairy cattle in Beni Hisar Farm in Kabul province using recorded data from 1389 to 1392 years, were used to estimate the effect of calving month and season for the purpose of estimating the correlation between milk yield, fat production and fat percentage of the Holstein dairy cows. General linear model (GLM) procedure and SPSS software were used for the estimation of the effect calving month and seasons. The results showed calving month influenced significantly on productive traits (P < 0.05). The greatest milk and fat production (kg) were observed in dairy cows that calved in December. In addition, dairy cows that calved in October had the greatest fat percentage totally, the results showed, animals that calved in fall season had greater performance than the others. Naturally, milk production of these animals reached production peak in winter when the weather and nutritional conditions are suitable for production.
Comments: 4 Pages.
[v1] 2017-09-23 04:38:31
Unique-IP document downloads: 107 times
Vixra.org is a pre-print repository rather than a journal. Articles hosted may not yet have been verified by peer-review and should be treated as preliminary. In particular, anything that appears to include financial or legal advice or proposed medical treatments should be treated with due caution. Vixra.org will not be responsible for any consequences of actions that result from any form of use of any documents on this website.
Add your own feedback and questions here:
You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.