By S Leeson, J D Summers
A accomplished overview of all features of business construction structures, this ebook presents an up to date examine broiler breeder creation and administration. beginning with really expert genetic courses as built by way of the first breeders and finishing with chapters on sensible, hands-on facets of breeder administration, the source contains wide insurance of health and wellbeing administration, feeding platforms, environmental keep an eye on, lighting fixtures courses, and female and male copy. spotting the range of administration structures world wide, it contains breeders in either temperate and hot climates in addition to managed setting as opposed to curtain-sided housing platforms.
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Additional resources for Broiler Breeder Production
75:755-762. L. R. McDaniel, 1992. Interrelationships between fertility and hatchability of eggs from broiler breeder hens. J. Appl. Poultry Res. 1:156-159. , 1996. Role of body weight and food intake after photostimulation on ovarian function at first egg in broiler breeder females. Br. Poult. Sci. 37:841-851. K. L. Wilson and B. Howarth, 1995. Fertility of male and female broiler breeders following exposure to elevated ambient temperatures. Poult. Sci. 74:1029-1038. J. Sexton, 1980. Effect of time of day of artificial insemination interval on the fertility of broiler breeder hens.
1 ml Reproduction 41 The semen already represents 6 ml of this volume and so it must be mixed with (24-6) = 18ml diluent. Inseminating hens: During artificial insemination, the handling and manipulation of the hen is somewhat similar to that previously described for semen collection from roosters. The operation is either a one or two person procedure depending upon equipment available to constrain the hen. Gentle pressure is applied with both hands concurrently from below the cloaca and above the tail region.
Multiple ovulation can also cause more shell defects. Slab-sided eggs are a consequence of two eggs being formed simultaneously and physically contacting each other in the upper regions of the shell gland. With erratic timing of eggs entering the shell gland, shell calcification may be incomplete or missing on some eggs. Unfortunately erratic ovulation most often results in shell-less eggs, and these are rarely seen by the breeder manager, because most are eaten by the hens or roosters. Once hens become obese, they also have fewer sperm in the sperm storage glands, and so this situation coupled with reduced mating activity leads to lower rates of fertilization.
Broiler Breeder Production by S Leeson, J D Summers