Pasture Versus Dry Lot Feeding for Dairy Bulls in Artificial Breeding
نویسندگان
چکیده
منابع مشابه
Breeding Soundness Evaluation for Beef and Dairy Bulls - FSA-3046
The breeding soundness evaluation (BSE) is a practical method to identify bulls with less than satis factory breeding potential. This evalu ation should be conducted on every bull at least 30 to 60 days before each breeding season to allow enough time for replacement of deferred or unsatis factory bulls. The first step in a BSE is to select a veterinarian in your area who is competent in con...
متن کاملBreeding Soundness of Bulls
The importance of the bull in a cattle breeding program often is underestimated. A cow is responsible for half the genetic material in only one calf each year, while the bull is responsible for half the genetic material in 20 to 50 calves. The bull’s ability to locate cows in estrus and breed them is clearly vital to a successful breeding program. Bulls differ in physical appearance, fertility ...
متن کاملSward Factors Influence on Pasture Dry Matter Intake of Grazing Dairy Cows: A Review
Successful pasture-based milk production systems pivot on balancing dairy cows’ feed requirements with seasonal and annual fluctuations in pasture production. In order to maximise cow production from grazing dairy systems, it is necessary to reach an efficient utilization of grazed grass for feeding cows and the development of appropriate grazing management systems designed to maximize daily pa...
متن کاملBreeding Objectives and Desired-Gain Selection Index for Rayeni Cashmere Goat in Pasture System
The aim of this study was to define breeding goals and determine the suitable selection index in Rayeni cashmere goat using simulated data. To select animals for increased quantity of meat, milk and cashmere produced, body weight of the doe (BWD), milk weight (MW), cashmere weight (CW), weight of kids for sale (WK) and number of kids for sale per doe (NK) was used as selection criteria. Four se...
متن کاملImpact of selection for residual feed intake on breeding soundness and reproductive performance of bulls on pasture-based multisire mating.
There is concern in the beef industry that selecting bulls for feed efficiency based on residual feed intake (RFI) may have a negative impact on bull reproductive performance and fertility. Here we investigated the impact of selection of bulls for low RFI on breeding soundness evaluation (BSE), reproductive performance, and fertility of bulls under natural service in multisire mating groups on ...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1953
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(53)91481-7