Encyclopedia Of Animal Science - B pdf

... energy consumed by cow-calf pairs. [2] A two-breed rotation system is shown in Fig. 2. All females sired by bulls of < /b> breed A are bred to bulls of < /b> breed B, and vice versa. This system can be effectively approximated ... effectively approximated by using bulls of < /b> breed A for two or three years, switching to bulls of < /b> breed B for two or three years, then back to bul...

Ngày tải lên: 02/07/2014, 00:20

... example of < /b> breed development was that used by many of < /b> the developers of < /b> the Brahman-derivative breeds of < /b> cattle. Several of < /b> those breeds are 3/8 Brahman and 5/8 of < /b> the British or European breed. ... coli Eubacterium aerofaciens Fibrobacter succinogenes Lactobacillus acidophilus Lactobacillus brevis Lactobacillus cellobiosus Lactobacillus fermentum La...

Ngày tải lên: 02/07/2014, 00:20

... reserved. their extracts of < /b> animal < /b> by-products have provided the scientific basis for the development of < /b> synthetic sub- stitutes. Many of < /b> the animal < /b> by-products are still indispensable as treatment regimes ... contract was broken in the mid-20th century when academic departments of < /b> animal < /b> husbandry changed their names to departments of < /b>...

Ngày tải lên: 02/07/2014, 00:20

... farm -animal < /b> species reaches a maximum at the time of < /b> birth or a few days before birth. [3] At this time, the uptake of < /b> macromolecules by the newborn animal < /b> does not merely result from a degree of < /b> ... members of < /b> two different species. Those of < /b> European origin (i.e., Angus, Hereford, Charolois breeds) are Bos taurus, while those with humped back...

Ngày tải lên: 02/07/2014, 00:20

... state of < /b> being. Nonambulatory Cattle Cows become nonambulatory for a variety of < /b> reasons. The leading correlate of < /b> not being able to get up and walk is a lack of < /b> vigor that also is signaled by a body-condition score ... to 60% of < /b> animals calving on an annual basis. Animals may be affected by more than one problem, and an animal < /b> may experience repeated...

Ngày tải lên: 02/07/2014, 00:20

... high-volume products of < /b> egg-breaking plants. These and other products are described subsequently. They usually are frozen in various carton sizes, plastic bags, 30-lb plastic cans, or 55-gal ... have a need to build a nest, because sows placed in barren environments will perform vacuum activities, by going through the motions of < /b> rooting at the bare floor and grabbing the bars o...

Ngày tải lên: 02/07/2014, 00:20

... surfaces of < /b> PDF. [4] Digestion of < /b> PDF is via erosion from the surface attachment site. Therefore, rate and extent of < /b> digestion of < /b> PDF are func- tions of < /b> 1) the microbially accessible surface area of < /b> ... lag-rumination pool, aging fragments undergo age- dependent changes in their masticated size, rate of < /b> exposure of < /b> new surfaces of...

Ngày tải lên: 02/07/2014, 00:20

... number of < /b> goose breeds and synthetic lines is the possibility of < /b> autosexing in day-old purebred goslings based on phenotypic differences in their down color. Producing the color-sexing crosses of < /b> ... digestion by microbes and absorption of < /b> volatile fatty acids by the host. The volatile fatty acids, acetate, propionate, and butyrate, can contribute up to 80% of <...

Ngày tải lên: 02/07/2014, 00:20

... introduction of < /b> animals from outside the breed often occurs. Very few breeds have been formed in strict isolation, or without the influence of < /b> other breeds over time. A description of < /b> all breeds is beyond ... majority of < /b> their stallion’s book will be bred early in the breeding season, but this is not recommended if most of < /b> his mares will be bred later (April...

Ngày tải lên: 02/07/2014, 00:20

... a large number of < /b> countries are signatories to the Con- vention on Biological Diversity (CBD). The objectives of < /b> the CBD are: [3] Conservation of < /b> biological diversity, the sustainable use of < /b> its ... food -animal < /b> production, and the immunosup- pression may render animals more susceptible to infec- tious disease. Thus, inclusion of < /b> fish or other n-3 PU...

Ngày tải lên: 02/07/2014, 00:20