Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.
So you’re able to better see the aftereffect of brand new crossbreeding towards sexual precocity out-of crossbreed dogs, brand new AFC is actually reviewed predicated on: hybrid type, race of sire mothers (bull and you may inseminated local cows), hybridization peak and inventory farms
The newest indicate age initially calving for everyone breeds build is actually ± weeks, representing up to 36 months (a couple of years eleven days 19 weeks ± 11 days twenty four hours). Probably the most precocious heifers calved within two years ( months). To own fifty% away from heifers, very first calving is at weeks. The original qualities were held an average of within ± months ( to months).
Brand new mean AFC of your crossbreeds are lower than those reported among the Zebu under the tropics at over forty days stated in lot of knowledge ( Rahman mais aussi al., 2016 ; Tellah mais aussi al., 2015a , 2015b ; Bashir and Este Zubeir, 2013 ; Sokouri et al., 2010 ; Bayemi ainsi que al., 2005 ). , 2015 ). Certain article authors keeps said performance very close to the observance on more crossbreeds during the Africa, despite cow breeds included in this new try out: 34 weeks among the Montbeliard crossbreeds during the Algeria ( Madani and Mouffok, 2008 ) and you may Morocco ( Srairi and you will Mousili, 2014 ), ± 0.43 weeks in the Girolando crossbreed inside the Benin ( Doko et al., 2012 ). It was an identical with the Holstein-Friesian hybrid cows in the Ethiopia at the thirty six.4 ± 1.seven days, this new Borgou and you may Lagunaire breeds in the thirty-six.step one ± 6.30 months in the Benin ( Adamou-Ndiaye mais aussi al., 2003 ) and also in brand new Azawak Zebu within thirty six.5 ± cuatro.10 and ± 13 weeks when you look at the Niger ( Achard and you will Chanono, 2006 , 1997 ).
The observation is actually higher than those said because of the Genzebu ainsi que al. (2016) certainly hybrid cattle during the Kenya (twenty-six.9 ± 5.4 and you can 27.0 ± 3.7 weeks). It absolutely was a bit a lot better than new observations from the Ngodigha ainsi que al. (2009) off 29.seven ± 2.5 days certainly crossbreeds (Holstein x Bunadji) inside Nigeria, Ben Salem mais aussi al. (2009) off 31.eight ± cuatro.one year when you look at the Holstein into the Tunisia and you can Srairi and you can Mousili (2014) out-of 29 days when you look at the Montbeliard from inside the Morocco. Particular adaptation items from the AFC was indeed reviewed to attain the statements.
One of many more crossbreeding types identified ( Table 1 ), new Fulani Zebu (FZ) inseminated that have semen away from Montbeliard (MB x FZ) and you may Alps Brown (Ab x FZ) enjoys lead the essential precocious corssbreeds (first calving within 2 years) (5%). Whenever you are, brand new inseminations regarding Fulani Zebu cows to the semen from Holstein (HT x FZ) and you may of Tarentaise (T x FZ) then the insemination regarding Gudali Zebu cattle that have sperm away from Montbeliard (MB x GZ) features introduced this new precocious hybrid cattle.
The minimum is actually days in addition to restrict is actually days
Table 1: Decades at first calving (months) predicated on crossbreeding input dairy cattle facilities in your neighborhood away from Bobo-Dioulasso within the Burkina Faso
The analysis worried about the new breeding track of twenty (20) crossbreed cattle because of this new interbreeding from fake insemination between local reproduce cows (Gudali Zebu and you will Fulani Zebu) and you will exotic reproduce bulls (Holstein, Alps Brown, Tarentaise, Montbeliard). This type of crossbreeds was in fact born ranging from 1999 and 2010 and you can provided the basic calf between 2002 and 2012 with the three increased inventory farms during the urban and residential district aspects of Bobo-Dioulasso. Each one of these farms provides regarding the 50 hybrid cows for the manufacturing. The original ranch is situated in an urban area, the following 10 Kilometres away in the southern area get-off together with top sitios de citas friki third 60 Km aside within east get off out-of Bobo-Dioulasso. Preliminary surveys anywhere between on these parts helped to choose this type of around three farms that have a livestock sign in (heat and you will phony insemination keeping track of sheet sets). Incidents connected with individual tabs on animal breeding such as calving schedules, dates of your first warms and you can inseminations was basically submitted every single day by the new cattlemen and also the inseminators. Brand new exploitation of these data managed to get possible to determine twenty (20) first calving’s comparable to the initial qualities. These types of facilities try characterized by the existence of forgotten, an excellent herd wellness overseeing, a led breeding means (mainly AI, to have not enough a specified bull), the concentrate provides (thread pie otherwise cottonseed and you may commercial malt) throughout the ration serving and extreme distribution out-of silage and you may agricultural by issues. The sole intent behind so it process sorts of ‘s the manufacturing and you can revenue from by hand canned dairy, twice a day (day and you can evening). The newest focuses is served on pets on their go back off grazing as well as in the new day during the milking big date.