This factsheet will describe the inheritance mode of the poll/horn gene and discuss what is known about the scur trait. ; if it gets two horned alleles it will be homozygous horned and will be horned. Only one gene of each pair is randomly transmitted to the offspring; the offspring gets one gene from each parent, thus giving it a pair. For cattle to develop scurs, it must be a horn allele carrier (Pp) and have some other unknown genetic influence, realizing that male calves will tend to develop scurs at a higher rate than females. The data also support that males develop the scur condition at a higher rate than females. Polled cattle are equivalent or better than horn cattle in terms of quality, efficiency, beef production, fertility, and other characteristics. % of people told us that this article helped them. Scurs – Horn-like tissue that are attached to the skin rather than the skull. The condition that is obvious is that horned cattle (pp) cannot have the scur. This is shown in the most extreme case in Diagram 2 where a homozygous polled bull is mated to a herd of horned cows. Dehorned cattle should never be considered polled, especially from a genetics point of view. If he is bred to cows that have the horn allele then it is possible for him to produce scurred calves. Isa Beefmasters is very proud to have had 106 L Bar cows receive the coveted BBU Pacesetter award. Horns that grow outward then curve up is a characteristic typically found in most to all European/British breeds such as. Since there is no research to support the existence of this gene it will be disregarded for this factsheet. Dehorned cattle typically have a flat-looking poll, unlike that of truly polled cattle, described below. Because genes occur in pairs, one gene of a pair may have one allele and the other gene of that same pair may have a different allele. This work is supported by New Technologies for Agriculture Extension grant no. Or, if you’re looking for Beefmaster genetics, we have several great recommendations of top Beefmaster breeders we would be glad to put you in touch with. See Diagram 1. Gene – A gene is a specific section of DNA on a chromosome that serves a biological function. Genomics Testing and Planning a Breeding Program. She currently works as a forage and beef agriculture extension specialist, advising farmers on a variety of issues relating to their cattle and the forages they grow and harvest. 1,700 lb. Always keep in mind that males and females can either be polled or horned. Karin Lindquist earned a BSc in Agriculture as an Animal Science major from the University of Alberta, Canada. While there is a preference for solid colors, you can see Beefmasters color ranging from light red to dark red and some will have white mottle or speckles on their faces. Long and Gregory postulated that this was due to males expressing scurs when either homozygous or heterozygous for the scur allele and females only have the scur condition when homozygous for the scur allele. This includes all breeds listed above, and others not mentioned. Naturally polled breeds, though, do not have both horned and polled cattle. The dominant allele (poll) masks the existence of the recessive allele (horn) so it is polled, but it carries the horn allele and can pass it on to its calves. The condition that is obvious is that horned cattle (pp) cannot have the scur phenotype. Look at the poll (or the top of the head) of a bovine if you're not sure if it is polled, scurred or dehorned. Recessive – Is completely masked if paired with a dominant allele. American White Park The American White Park is a large white breed with black or red points (ears, nose and eyes). *Expect a higher incidence in males than females. cattle. His influence back on our Polled Tiger daughters gives us double bred Painted Tiger females. Beefmasters are intelligent, gentle cattle that are truly a pleasure to work with. Beefmaster cattle are composed of 50% Brahman, 25% Hereford and 25% Shorthorn.

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