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.
To greatest comprehend the effectation of the fresh crossbreeding into intimate precocity out-of hybrid dogs, the newest AFC is actually assessed centered on: hybrid method of, race away from sire mothers (bull and you will inseminated local cows), hybridization top and you may inventory facilities
The brand new mean age at first calving for everybody types make is actually ± months, symbolizing approximately three years (24 months eleven days 19 days ± eleven days day). More precocious heifers calved within this 2 years ( months). For fifty% of heifers, earliest calving was at weeks. The first functions occurred on average in the ± months ( to help you months).
Brand new mean AFC of your crossbreeds try lower than the individuals said one of many Zebu underneath the tropics on more 40 months reported a number of degree ( Rahman ainsi que al., 2016 ; Tellah et al., 2015a , 2015b ; Bashir and you may Este Zubeir, 2013 ; Sokouri ainsi que al., 2010 ; Bayemi ainsi que al., 2005 ). , 2015 ). Specific article writers enjoys claimed overall performance really near to all of our observance for the more crossbreeds inside Africa, notwithstanding cow types included in the brand new try out: 34 days among the many Montbeliard crossbreeds in Algeria ( Madani and Mouffok, 2008 ) and you will Morocco ( Srairi and Mousili, 2014 ), ± 0.43 days on Girolando crossbreed inside the Benin ( Doko et al., 2012 ). It was a similar to the Holstein-Friesian hybrid cattle within the Ethiopia at thirty six.4 ± step 1.seven days, this new Borgou and you may Lagunaire breeds during the thirty-six.step 1 ± 6.30 days into the Benin ( Adamou-Ndiaye et al., 2003 ) plus in the fresh new Azawak Zebu in the thirty six.5 ± cuatro.10 and ± https://datingranking.net/fr/sites-de-rencontre-noirs/ 13 months in the Niger ( Achard and Chanono, 2006 , 1997 ).
The observance is more than people advertised because of the Genzebu mais aussi al. (2016) one of crossbreed cattle into the Kenya (twenty six.9 ± 5.cuatro and you will twenty seven.0 ± step three.eight weeks). It had been slightly better than the newest findings from the Ngodigha et al. (2009) of 29.seven ± 2.5 months certainly crossbreeds (Holstein x Bunadji) into the Nigeria, Ben Salem et al. (2009) of 29.seven ± cuatro.1 year from inside the Holstein within the Tunisia and you will Srairi and you can Mousili (2014) from 31 weeks from inside the Montbeliard from inside the Morocco. Particular adaptation circumstances from the AFC was indeed reviewed so you’re able to attain the comments.
One of many some other crossbreeding designs understood ( Table step 1 ), the brand new Fulani Zebu (FZ) inseminated that have semen away from Montbeliard (MB x FZ) and Alps Brown (Abdominal x FZ) features introduced many precocious corssbreeds (first calving at the 2 years) (5%). When you are, the new inseminations out of Fulani Zebu cows on the semen from Holstein (HT x FZ) and out-of Tarentaise (T x FZ) then insemination out of Gudali Zebu cows which have semen off Montbeliard (MB x GZ) have put this new precocious hybrid cows.
The minimum was weeks and the maximum is weeks
Desk step 1: Ages at first calving (months) centered on crossbreeding type in milk products cattle facilities in the region out of Bobo-Dioulasso during the Burkina Faso
The study focused on the newest breeding monitoring of twenty (20) crossbreed cows due to the new interbreeding from the artificial insemination anywhere between local breed cattle (Gudali Zebu and you may Fulani Zebu) and you can amazing breed bulls (Holstein, Alps Brownish, Tarentaise, Montbeliard). Such crossbreeds have been produced between 1999 and you will 2010 and you may offered their very first calf anywhere between 2002 and 2012 to the three improved inventory farms within the metropolitan and suburban aspects of Bobo-Dioulasso. Each one of these facilities provides regarding the fifty hybrid cattle for the production. The initial farm is found in an urban area, the following 10 Km aside within southern hop out and 3rd sixty Kilometer aside from the eastern exit regarding Bobo-Dioulasso. First surveys anywhere between on these elements aided to choose these about three farms that have a livestock sign in (heat and you may artificial insemination overseeing sheet sets). Incidents associated with private tabs on creature breeding such as for example calving dates, times of your basic heating and inseminations was in fact filed day-after-day by the the newest cattlemen together with inseminators. The latest exploitation of those documents made it you can easily to determine twenty (20) earliest calving’s add up to the initial services. These farms try characterized by the presence of missing, a great herd fitness keeping track of, a guided reproduction means (mostly AI, for shortage of a selected bull), the latest focus provides (pure cotton pie otherwise cottonseed and you will industrial malt) on the ration giving and you will intense delivery out-of silage and you will farming because of the circumstances. The only aim of it procedure particular ‘s the creation and you can sales out-of by hand processed dairy, twice a day (early morning and you can nights). The latest focuses is served to your pet on the get back of grazing and in the new day at the milking big date.