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.

The imply age in the beginning calving for everyone types build is actually ± months, representing approximately three years (couple of years 11 months 19 months ± 11 months 1 day). The minimum is actually months and the restrict was days. More precocious heifers calved within this couple of years ( months). To possess fifty% off heifers, basic calving was at days. The first characteristics were held typically from the ± weeks ( to months).

The latest mean AFC of your own crossbreeds is less than people claimed one of the Zebu within the tropics during the over forty weeks stated in several degree ( Rahman et al., 2016 ; Tellah et al., 2015a , 2015b ; Bashir and you can El Zubeir, 2013 ; Sokouri ainsi que al., 2010 ; Bayemi ainsi que al., 2005 ). , 2015 ). Certain authors enjoys claimed abilities most near to our very own observance for the more crossbreeds within the Africa, despite cow breeds used in the check out: 34 months among the Montbeliard crossbreeds inside the Algeria ( Madani and you may Mouffok, 2008 ) and you can Morocco ( Srairi and you may Mousili, 2014 ), ± 0.43 weeks regarding Girolando hybrid when you look at the Benin ( Doko et al., 2012 ). It absolutely was a similar for the Holstein-Friesian crossbreed cows for the Ethiopia on thirty-six.4 ± step one.eight weeks, the fresh Borgou and you may Lagunaire types on 36.step 1 ± 6.30 months within the Benin ( Adamou-Ndiaye mais aussi al., 2003 ) plus the fresh new Azawak Zebu at thirty-six.5 ± 4.10 and you may ± thirteen months when you look at the Niger ( Achard and you may Chanono, 2006 , 1997 ).

Our observation was more than people reported from the Genzebu ainsi que al. (2016) certainly one of hybrid cattle in the Kenya (twenty-six.nine ± 5.cuatro and twenty seven.0 ± step three.seven days). It had been somewhat a lot better than this new observations by Ngodigha et al. (2009) out of 31.seven ± 2.5 months certainly one of crossbreeds (Holstein x Bunadji) in Nigeria, Ben Salem mais aussi al. (2009) off 31.7 ± cuatro.1 year for the Holstein from inside the Tunisia and Srairi and Mousili (2014) regarding 29 days in Montbeliard in Morocco.

Among the many some other crossbreeding types recognized ( Table step 1 ), this new Fulani Zebu (FZ) inseminated with sperm from Montbeliard (MB x FZ) and Alps Brown (Ab x FZ) possess delivered the quintessential precocious corssbreeds (very first calving within 2 yrs) (5%). When you’re, this new inseminations regarding Fulani Zebu cattle towards the semen away from Holstein (HT x FZ) and you may regarding Tarentaise (T x FZ) then insemination out-of Gudali Zebu cattle having semen of Montbeliard (MB x GZ) provides produced the fresh precocious crossbreed cows.

Particular type activities from the AFC were examined to help you achieve the statements

Desk step 1: Decades in the beginning calving (months) considering crossbreeding enter in milk cattle facilities in the region away from Bobo-Dioulasso in Burkina Faso

In order to most readily useful comprehend the aftereffect of the fresh new crossbreeding to the sexual precocity out-of hybrid animals, the fresh new AFC is actually reviewed predicated on: hybrid sorts of, race away from sire moms and dads (bull and you will inseminated regional cows), hybridization height and you may stock farms

The research worried about the fresh breeding track of twenty (20) hybrid cattle due to new interbreeding from fake insemination anywhere between local breed cows (Gudali Zebu and you will Fulani Zebu) and you may amazing reproduce bulls (Holstein, Alps Brownish, Tarentaise want Black Sites dating site, Montbeliard). This type of crossbreeds was basically produced between 1999 and 2010 and you will provided the earliest calf anywhere between 2002 and you may 2012 to the about three improved inventory facilities for the urban and suburban aspects of Bobo-Dioulasso. Each of these farms have regarding 50 crossbreed cows within the manufacturing. The first ranch is located in a city, the following 10 Km away at southern exit additionally the 3rd sixty Km away in the eastern leave of Bobo-Dioulasso. Original studies ranging from during these components aided to choose these three facilities having a livestock register (temperatures and you will fake insemination keeping track of sheets). Events pertaining to individual tabs on animal reproduction such calving schedules, schedules of the first heating and you may inseminations was indeed submitted every single day by the the newest cattlemen therefore the inseminators. Brand new exploitation ones data made it you can easily to decide twenty (20) earliest calving’s add up to the first properties. These farms is characterized by the existence of destroyed, a good herd fitness monitoring, a guided breeding mode (mostly AI, to have lack of a designated bull), the fresh focus supplies (cotton pie otherwise cottonseed and you can industrial malt) on the ration eating and you may intensive shipments from silage and agricultural because of the things. Really the only purpose of that it operation form of ‘s the design and purchases from by hand processed milk products, twice a day (morning and you will nights). The fresh concentrates are supported on dogs on the return out-of grazing plus in the latest morning on milking day.