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 fresh mean years initially calving for everybody types make try ± weeks, symbolizing just as much as 36 months (2 years eleven months 19 weeks ± 11 weeks day). The minimum try days and also the restrict try weeks. The most precocious heifers calved in this a couple of years ( months). For 50% out-of heifers, very first calving was at weeks. The initial functions occurred normally at ± weeks ( so you’re able to months).
The fresh imply AFC of the crossbreeds is less than those people stated among the many Zebu within the tropics in the over forty months reported in lot of degree ( Rahman mais aussi al., 2016 ; Tellah ainsi que al., 2015a , 2015b ; Bashir and you can Este Zubeir, 2013 ; Sokouri et al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Specific authors enjoys claimed show most alongside our very own observation on the some other crossbreeds inside Africa, notwithstanding cow types used in brand new experiment: 34 weeks one of the Montbeliard crossbreeds for the Algeria ( Madani and you will Mouffok, 2008 ) and you may Morocco ( Srairi and you can Mousili, 2014 ), ± 0.43 days about Girolando crossbreed in Benin ( Doko ainsi que al., 2012 ). It actually was an equivalent on the Holstein-Friesian crossbreed cattle inside Ethiopia at the thirty six.4 ± step one.seven months, the newest Borgou and Lagunaire breeds at the thirty six.1 ± 6.29 days for the Benin ( Adamou-Ndiaye et al., 2003 ) and in the new Azawak Zebu during the thirty-six.5 ± 4.ten and you may ± 13 weeks inside Niger ( Achard and you may Chanono, 2006 , 1997 ).
Our very own observation was more than men and women stated of the Genzebu ainsi que al. (2016) certainly one of crossbreed cattle in Kenya (twenty six.nine ± 5.cuatro and you can twenty-seven.0 ± 3.7 days). It was a little much better than the brand new findings of the Ngodigha ainsi que al. (2009) from 30.eight ± dos.5 days one of crossbreeds (Holstein x Bunadji) in Nigeria, Ben Salem ainsi que al. (2009) out of 30.7 ± cuatro.12 months into the Holstein from inside the Tunisia and you can Srairi and you will Mousili (2014) from 29 weeks in the Montbeliard inside Morocco.
Among different crossbreeding types understood ( Desk step one ), new Fulani Zebu (FZ) inseminated with semen regarding Montbeliard (MB x FZ) and Alps Brown (Abdominal x FZ) enjoys delivered one particular precocious corssbreeds (basic calving during the couple of years) (5%). Whenever you are, the fresh Baptist dating apps inseminations out of Fulani Zebu cows on semen from Holstein (HT x FZ) and you can out-of Tarentaise (T x FZ) then the insemination out-of Gudali Zebu cows having semen out-of Montbeliard (MB x GZ) features introduced the new precocious hybrid cattle.
Certain version facts associated with the AFC was basically analyzed in order to achieve the statements
Dining table 1: Many years to start with calving (months) centered on crossbreeding enter in milk products cattle farms in the region regarding Bobo-Dioulasso inside the Burkina Faso
To most useful see the effectation of the fresh crossbreeding for the sexual precocity off hybrid pets, this new AFC was assessed considering: crossbreed particular, battle out-of sire mothers (bull and you will inseminated local cattle), hybridization height and you will inventory facilities
The study concerned about brand new reproduction track of twenty (20) crossbreed cows because of new interbreeding from the fake insemination between regional breed cows (Gudali Zebu and you may Fulani Zebu) and amazing breed bulls (Holstein, Alps Brownish, Tarentaise, Montbeliard). This type of crossbreeds were created anywhere between 1999 and 2010 and you will provided their first calf between 2002 and 2012 towards the about three enhanced stock facilities in metropolitan and you will suburban regions of Bobo-Dioulasso. All these facilities enjoys throughout the fifty crossbreed cattle from inside the production. The first ranch is found in a city, next 10 Kilometres aside at southern get-off therefore the 3rd 60 Kilometer away in the eastern get off of Bobo-Dioulasso. Preliminary surveys between in these elements assisted to choose such around three facilities having a cattle check in (heat and you may phony insemination overseeing sheet sets). Events related to personal track of creature reproduction such as calving schedules, dates of one’s first heating and you can inseminations had been registered everyday from the this new cattlemen in addition to inseminators. The fresh new exploitation of these data caused it to be you can easily to determine twenty (20) first calving’s comparable to the first features. These facilities was described as the presence of missing, a good herd wellness monitoring, a guided reproduction means (generally AI, for lack of a specified bull), new focus supplies (thread pie or cottonseed and industrial malt) on the ration giving and intensive delivery away from silage and agricultural by the circumstances. Truly the only function of that it process particular ‘s the production and revenue away from by hand canned whole milk, two times a day (early morning and nights). New centers try supported on the pet on their come back off grazing and also in the fresh new early morning within milking day.