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.
This new suggest many years initially calving for everybody breeds built was ± months, representing as much as 36 months (24 months 11 months 19 months ± eleven days a day). The essential precocious heifers calved contained in this 24 months ( months). To own 50% away from heifers, earliest calving was at days. The first characteristics were held on average within ± weeks ( to help you days).
The newest suggest AFC of one’s crossbreeds was below those people said one of the Zebu under the tropics at more forty months advertised in lot of studies ( Rahman mais aussi al., 2016 ; Tellah ainsi que al., 2015a , 2015b ; Bashir and you may El Zubeir, 2013 ; Sokouri ainsi que al., 2010 ; Bayemi mais aussi al., 2005 ). , 2015 ). Certain article writers possess reported show very site de rencontres pour agriculteurs seulement connexion alongside our very own observance with the some other crossbreeds in Africa, in spite of cow types found in this new check out: 34 days one of many Montbeliard crossbreeds during the Algeria ( Madani and you may Mouffok, 2008 ) and you may Morocco ( Srairi and Mousili, 2014 ), ± 0.43 months regarding Girolando hybrid in the Benin ( Doko ainsi que al., 2012 ). It had been a similar with the Holstein-Friesian crossbreed cattle into the Ethiopia from the thirty-six.cuatro ± 1.seven weeks, this new Borgou and you can Lagunaire types from the thirty-six.step one ± 6.31 months in the Benin ( Adamou-Ndiaye ainsi que al., 2003 ) and also in the brand new Azawak Zebu during the 36.5 ± cuatro.10 and you can ± 13 months in the Niger ( Achard and you will Chanono, 2006 , 1997 ).
The observance is higher than men and women stated from the Genzebu ainsi que al. (2016) certainly one of hybrid cattle during the Kenya (twenty-six.9 ± 5.4 and you will twenty seven.0 ± 3.eight weeks). It absolutely was slightly better than new observations because of the Ngodigha ainsi que al. (2009) out-of 31.seven ± 2.5 days one of crossbreeds (Holstein x Bunadji) inside the Nigeria, Ben Salem mais aussi al. (2009) from 30.eight ± 4.one year inside Holstein during the Tunisia and you may Srairi and Mousili (2014) out of 31 months during the Montbeliard for the Morocco. Particular version points regarding the AFC was in fact assessed so you can attain the statements.
Among the some other crossbreeding sizes recognized ( Table step 1 ), the fresh new Fulani Zebu (FZ) inseminated having sperm off Montbeliard (MB x FZ) and Alps Brown (Ab x FZ) features introduced the most precocious corssbreeds (first calving in the 24 months) (5%). While you are, this new inseminations regarding Fulani Zebu cattle to your sperm from Holstein (HT x FZ) and away from Tarentaise (T x FZ) then the insemination away from Gudali Zebu cows with semen out of Montbeliard (MB x GZ) have introduced the brand new precocious crossbreed cows.
Table 1: Years initially calving (months) centered on crossbreeding type in dairy cows facilities in the region off Bobo-Dioulasso inside Burkina Faso
The study focused on the fresh breeding track of twenty (20) hybrid cows through brand new interbreeding from the artificial insemination ranging from local breed cattle (Gudali Zebu and you will Fulani Zebu) and you can unique reproduce bulls (Holstein, Alps Brown, Tarentaise, Montbeliard). These types of crossbreeds was produced anywhere between 1999 and you can 2010 and you may offered the very first calf between 2002 and you will 2012 towards the around three enhanced inventory farms when you look at the urban and you can suburban aspects of Bobo-Dioulasso. Each one of these farms has throughout the fifty crossbreed cattle into the development. The first ranch is situated in an urban area, next 10 Kilometres away on south log off and third 60 Kilometres away in the east hop out off Bobo-Dioulasso. First studies anywhere between during these parts helped to pick this type of about three facilities that have a livestock sign in (temperatures and you may phony insemination keeping track of sheets). Incidents related to personal track of creature breeding particularly calving dates, times of very first warms and inseminations have been submitted every day because of the the new cattlemen additionally the inseminators. This new exploitation of those data files managed to get you can to choose twenty (20) first calving’s equal to the initial services. These facilities is actually characterized by the clear presence of lost, a great herd wellness keeping track of, a led breeding form (generally AI, to possess not enough a specified bull), the fresh new concentrate provides (pure cotton cake or cottonseed and you may industrial malt) from the ration serving and you will intensive shipping out-of silage and you can farming of the circumstances. The sole purpose of this process style of ‘s the creation and you may income from manually processed milk, twice a day (day and you will evening). The new concentrates was offered to the pets on the get back off grazing along with the latest morning within milking time.